National distributed subsidy policy
The distributed electricity price subsidy standard is 0.42 yuan per KWH (tax included, the same below), and the benchmark feed-in price or electricity price subsidy standard shall be implemented for photovoltaic power generation projects since they are put into operation, with a term of 20 years in principle.
Distributed:
The price subsidy standard is 0.42 yuan per KWH (tax included, the same below). The benchmark feed-in price or price subsidy standard shall be implemented for photovoltaic power generation projects since they are put into operation, and the term shall be 20 years in principle. The benchmark price for photovoltaic power generation will be determined first, and the price after 2022 will be determined separately.
The state gives distributed photovoltaic preferential policies
According to Guoneng Xinneng [2013] No. 433 and State Grid Finance [2013] No. 2044, distributed is a great simplification of the preliminary work and grid-connection process of photovoltaic projects.
1) Exempt from supporting documents such as power generation business license, planning site selection, land pre-examination, soil and water conservation, environmental impact assessment, energy conservation assessment and social risk assessment;
2) Individual projects shall be put on record by the power grid company
Distributed photovoltaic power generation projects built by natural persons using their own houses or in residential areas shall be directly registered by local power grid enterprises and centrally filed with local energy authorities for the record.
According to the State Grid Finance [2013] No. 2044, distributed is the grid-connected processing process of photovoltaic projects greatly simplified.
1) Encourage prefecture-level or county-level governments to establish a one-stop service system for distributed photovoltaic power generation project filing and completion acceptance, which is combined with power grid access application, grid connection debugging and acceptance, electricity fee settlement and subsidy issuance, and simplify the handling process;
2) The prefecture-level or county-level power grid enterprises shall handle related grid-connection procedures in accordance with simplified procedures, and provide grid-connection consultation, installation of electricity meters, grid-connection commissioning and acceptance services free of charge;
According to the Guidelines on Improving the Scale Management of Photovoltaic Power Generation and Implementing Competitive Allocation of Projects (Development Energy [2022]1163), the filing of photovoltaic projects is divided into three categories:
Both general PV projects and pacesetter projects should adopt competitive allocation to achieve scale indicators.
There is no limit to the index of the roof project, whether it is "self-use, surplus electricity access" or "full access".
In order to solve the difficulty of finding roofs, local governments are also trying to solve the problem. Many local governments have made provisions on the standards of existing buildings and new buildings under their jurisdiction, and proposed to consider them according to the standards of distributed photovoltaic.
For the roof of the existing building, the government encourages or obliges the installation of photovoltaic power generation projects on the roof when the annual comprehensive energy consumption of enterprises reaches 1000-5000 tons of standard coal within the jurisdiction of 9 provinces/cities/counties (Beijing City, Nanchang City, Taiyuan City, Hangzhou City, Fuyang City, Deqing County, Longyou County, Jiangshan and Anji County).
For new building roof, 18 provinces/cities/counties (Hefei City, Luoyang City, Wuxi City, Zhenjiang City, Nanchang City, Taiyuan City, Zhejiang Province, Hangzhou City, Deqing County, Jiaxing City, Wenzhou City, Dongtou County, Ruian City, Yueqing City, Yongjia County, Shaoxing City, Anji County, Lishui City) stipulated within the jurisdiction of the area, When the roof area of a new building reaches 1000~3000 different standards, the government encourages or forces the roof to carry out synchronous planning, design, construction and acceptance in accordance with the requirements of the installation of distributed photovoltaic projects.
In order to construct distributed photovoltaic power generation projects on buildings, installation enterprises shall not reduce the building sunshine standards of the building itself or adjacent buildings, and shall not violate the relevant laws and regulations of urban and rural planning management.
In the distributed photovoltaic power generation project constructed on the roof of enterprise buildings, the average height of the top roof of the photovoltaic module shall not be higher than 2.5 meters; For distributed photovoltaic power generation projects constructed on the roofs of residential buildings, the average height of the top roof of the photovoltaic modules shall not be higher than 2.8 meters. Any form of enclosure shall not be carried out around the lower part of the photovoltaic panel.
1. Construction process
Early contact - understand the owner's demand for power station construction, expected installed capacity, project investment sources.
Site investigation of the project -- mainly investigated local natural resources, electricity price, building roof drawings, local subsidies, electricity load, grid connection process (power grid company), project filing (National Development and Reform Commission)
Preliminary scheme design -- including the project's installed capacity, power generation, grid access mode and access grade, roof load calculation, investment and recovery period analysis.
Feedback to the owner - project negotiation, project investment source determination, preliminary offer, etc.
Pre-project procedures - consult the local power grid company and the National Development and Reform Commission
Power station construction and acceptance -- Photovoltaic power station construction and acceptance can be carried out after filing with the National Development and Reform Commission and getting the grid access permit
2. Application process
Distributed photovoltaic project owners shall apply for access to the customer service center of the prefecture-city or county-level power grid company after preparing relevant documents, and the customer service center shall assist the project owners to fill in the access application form; After accepting the access application, the customer service center will notify the project owner to confirm the access system scheme within the time limit promised by the power grid company; After the project is completed, the owner submits an application for grid connection acceptance and commissioning to the customer service center. The power grid enterprise will complete the installation of energy metering devices, the signing of electricity purchase and sale contracts and dispatching agreements, grid connection acceptance and commissioning, and then the project can be connected to the grid for power generation
National distributed subsidy policy
The distributed electricity price subsidy standard is 0.42 yuan per KWH (tax included, the same below), and the benchmark feed-in price or electricity price subsidy standard shall be implemented for photovoltaic power generation projects since they are put into operation, with a term of 20 years in principle.
Distributed:
The price subsidy standard is 0.42 yuan per KWH (tax included, the same below). The benchmark feed-in price or price subsidy standard shall be implemented for photovoltaic power generation projects since they are put into operation, and the term shall be 20 years in principle. The benchmark price of photovoltaic power generation shall be determined first, and the price after 2021 shall be determined separately.
The state gives distributed photovoltaic preferential policies
According to Guoneng Xinneng [2013] No. 433 and State Grid Finance [2013] No. 2044, distributed is a great simplification of the preliminary work and grid-connection process of photovoltaic projects.
1) Exempt from supporting documents such as power generation business license, planning site selection, land pre-examination, soil and water conservation, environmental impact assessment, energy conservation assessment and social risk assessment;
2) Individual projects shall be put on record by the power grid company
Distributed photovoltaic power generation projects built by natural persons using their own houses or in residential areas shall be directly registered by local power grid enterprises and centrally filed with local energy authorities for the record.
According to the State Grid Finance [2013] No. 2044, distributed is the grid-connected processing process of photovoltaic projects greatly simplified.
1) Encourage prefecture-level or county-level governments to establish a one-stop service system for distributed photovoltaic power generation project filing and completion acceptance, which is combined with power grid access application, grid connection debugging and acceptance, electricity fee settlement and subsidy issuance, and simplify the handling process;
2) The prefecture-level or county-level power grid enterprises shall handle related grid-connection procedures in accordance with simplified procedures, and provide grid-connection consultation, installation of electricity meters, grid-connection commissioning and acceptance services free of charge;
According to the Guiding Opinions on Improving the Scale Management of Photovoltaic Power Generation and Implementing Competitive Allocation of Projects (No. [2021]1163), the filing of photovoltaic projects is divided into three categories:
Both general PV projects and pacesetter projects should adopt competitive allocation to achieve scale indicators.
There is no limit to the index of the roof project, whether it is "self-use, surplus electricity access" or "full access".
In order to solve the difficulty of finding roofs, local governments are also trying to solve the problem. Many local governments have made provisions on the standards of existing buildings and new buildings under their jurisdiction, and proposed to consider them according to the standards of distributed photovoltaic.
For the roof of the existing building, the government encourages or obliges the installation of photovoltaic power generation projects on the roof when the annual comprehensive energy consumption of enterprises reaches 1000-5000 tons of standard coal within the jurisdiction of 9 provinces/cities/counties (Beijing City, Nanchang City, Taiyuan City, Hangzhou City, Fuyang City, Deqing County, Longyou County, Jiangshan and Anji County).
For new building roof, 18 provinces/cities/counties (Hefei City, Luoyang City, Wuxi City, Zhenjiang City, Nanchang City, Taiyuan City, Zhejiang Province, Hangzhou City, Deqing County, Jiaxing City, Wenzhou City, Dongtou County, Ruian City, Yueqing City, Yongjia County, Shaoxing City, Anji County, Lishui City) stipulated within the jurisdiction of the area, When the roof area of a new building reaches 1000~3000 different standards, the government encourages or forces the roof to carry out synchronous planning, design, construction and acceptance in accordance with the requirements of the installation of distributed photovoltaic projects.
In addition to the national subsidies, many powerful provinces, cities, counties, on the basis of national subsidies and introduced local subsidies
According to incomplete statistics, at present, a total of 9 provinces (Beijing, Shandong, Jiangsu, Jiangxi, Hebei, Shanghai, Jilin, Hunan, Zhejiang) have provincial independent KWH subsidies; Ten prefecture-level cities (Hefei City, Nanchang City, Shangluo City, Hangzhou City, Ningbo City, Jiaxing city, Wenzhou city, Shaoxing City, Quzhou City, Lishui City) have municipal-level independent KWH subsidy; Twelve county-level units (Xiaoshan District, Fuyang City, Jiande City, Deqing County, Anji County, Dongtou County, Ruian City, Yueqing City, Yongjia County, Longyou County, Jiangshan County, Yuyao City) have county-level electricity subsidies.
Initial investment subsidies were granted in 2 provinces (Jiangxi Province, Shaanxi Province), 4 cities (Wuxi City, Hefei City, Jiaxing City, Shaoxing City), and 8 counties (Fuyang City, Jiande City, Deqing County, Anji County, Dongtou County, Yongjia County, Longyou County, and Jiangshan County).
Take the construction of photovoltaic projects on ordinary commercial buildings in Beijing as an example, the electricity price is above 1 yuan /kWh, no matter for self-consumption electricity or on-grid electricity:
6. The subsidy settlement is guaranteed
State renewable energy subsidies are implemented under a system whereby grid enterprises transfer the subsidy funds on a monthly basis.
When the additional renewable energy is insufficient, distributed photovoltaic project subsidies will be given priority; Moreover, for distributed photovoltaic projects invested by natural persons, the subsidies will be paid in advance by the power grid company.
In addition, distributed photovoltaic projects are not included in the scope of green certificates in the Notice on the Trial Issuance of Renewable Energy Green Power Certificates and Voluntary Subscription Trading System just issued. It can be seen that the state plans to use market-oriented means to solve the subsidy problem in the field of ground power stations. However, in the field of distributed PV, the solution will still take the form of renewable energy add-on. As the price of the green certificate is lower than that of the renewable energy add-on, therefore, the distributed PV project subsidy guarantee is stronger!
7. Electricity can be counted as energy saving
According to the "13th Five-Year Plan" comprehensive Work Plan on energy conservation and emission Reduction, energy consumption per 10,000 yuan of GDP will be reduced by 15% by 2021, and enterprises are under great pressure to conserve energy.
However, according to the distributed photovoltaic policy of each region, enterprises build distributed photovoltaic projects for self-use, and the electricity generated by the distributed photovoltaic projects used can be counted into the energy saving of enterprises.
8. Do not compete to sell electricity
In Some Opinions on Further Deepening the Reform of the Electric Power System (Zhongfa [2021] No. 9), the definition of distributed power stations is as follows:
(5) Steadily promote the reform of electricity sale side, and open the electricity sale business to social capital in an orderly way.
18. Cultivate market players in multiple ways.
Allow qualified high-tech industrial parks or economic and technological development zones to establish electricity sales entities to purchase electricity directly; Encourage social capital to invest in the establishment of electricity sales entities, allowing them to buy electricity from power generation enterprises to sell to users; Allowing users or microgrid systems with distributed power sources to participate in electricity trading; Encourage water supply, gas supply, heat supply and other public service industries and energy conservation service companies to engage in electricity sales business; Qualified power generation enterprises are allowed to invest in and establish electricity sales entities to enter the electricity sales market and engage in electricity sales business.
At the same time, according to Annex 4 "Opinions on the Implementation of Orderly Release and Opening of Electricity Consumption Plan" in the series of documents of electricity reform:
(1) Basic contents of priority power generation.
Preferential generation refers to the preferential sale of electric power according to government pricing or equivalent preferential principle. Priority power generation capacity is guaranteed through full arrangement of power generation plan and strict implementation. Users with distributed wind and solar power generation are guaranteed through full acquisition of power supply enterprises and do not participate in market competition at present.
(2) Scope of application for priority power generation.
In order to facilitate the implementation of the affordable purchase system for renewable energy power generation in accordance with the plan, power generation from wind, solar, biomass and other renewable energy sources included in the plan will be given priority.
The requirements of the distributed photovoltaic access system are as follows:
1. Acceptance of bracket installation
1. The support with fasteners should be firmly fastened, and there should be no pressure equality of spring pad.
2. The tilt Angle deviation of the support should not be greater than ±1°
3. The deviation of verticality and levelness of the support installation shall comply with the relevant provisions of the current national standard "Photovoltaic Power Station Construction Specifications".
4. The anticorrosive treatment of the bracket shall meet the design requirements.
2. Acceptance of photovoltaic module installation
1. The appearance, junction box and connector of the photovoltaic module should be intact, without scratches or hidden cracks.
2. The indirect plug-in connection of the photovoltaic module should be firm, and the connection line should be treated, neat and beautiful.
3. The inclination Angle deviation of the photovoltaic module shall not be greater than ±1°.
4. The edge height difference of adjacent photovoltaic modules is less than or equal to 2mm, and the edge height difference of the same group of photovoltaic modules is less than or equal to 5mm.
5. Insulation resistance of the square array shall meet the design requirements.
6. After the photovoltaic modules are connected in series, the open circuit voltage and short circuit current of the photovoltaic modules should be tested.
Yes. The e construction unit shall apply to the fire control institution of the public security organ for examination and approval of fire control design, and apply for fire control acceptance upon completion of the construction project.
Power generation enterprises shall, in accordance with the "Measures for the Implementation of Responsibility System for Fire Control Safety", strictly implement the main responsibilities for fire control safety, and formulate their own fire control safety system, operation rules for fire control safety, preplans for fire fighting and emergency evacuation.
Submit an application for feed-in tariff to the price bureau, the price bureau approves the documents for feed-in tariff, the phase power supply company submits an application for the photovoltaic power station gate, and the power supply company approves the gate and measures the electric energy. The device shall be sent to the Institute of Electrical Engineering for verification and installation, and the application and data of photovoltaic power station access interval and transmission line scheduling command shall be submitted.
Power supply company issued photovoltaic power station access interval and Songcheng county dispatch named. The scope division of regulating equipment shall be submitted to the provincial quality supervision central station for grid connection acceptance application and self-inspection report.
Provincial quality supervision central station organizes the project before grid connection. Inspection and acceptance of provincial quality supervision. The unqualified items of central station shall be eliminated and the rectification situation shall be reported to provincial quality supervision central Station for review.
Leaf Province quality supervision station issued the acceptance report phase, the power supply company to submit the grid acceptance application and data, the power supply company for drawings and major equipment parameters and other data review, the power supply company organized various departments for pre-grid acceptance.
For the acceptance phase, the power supply company shall submit the data for the grid-connected scheduling agreement, and submit the data for the electricity purchase and sale contract to the power supply company. Then you tell me something about the contract. Submit the data of power supply contract to the power supply company, handle the power supply contract, and the county power supply company shall review and record the protection value of the photovoltaic power station equipment in advance, and the county power supply company shall submit the head goose plan of the sub-power station.
Yes, according to the "photovoltaic power Station design Code" design
Evaluation standards are special industries must be evaluated according to the cycle. Here to remind you, we must find qualified insurance evaluation agencies for such insurance evaluation business, otherwise it will waste time and energy.
The full name of isoassurance evaluation is information security grade protection evaluation, which is certified by the Ministry of Public Security with qualifications.
In accordance with the provisions of the national information security grade protection standards, entrusted by the relevant units, in accordance with the relevant management standards and technical standards, the information system security grade protection activities of testing and evaluation.
Chapter I General Rules
Article 1 For the purpose of standardizing the construction and management of distributed photovoltaic power generation projects and promoting the application of distributed photovoltaic power generation, these Measures are formulated in accordance with the Renewable Energy Law of the People's Republic of China, the Electricity Law of the People's Republic of China, the Administrative Licensing Law of the People's Republic of China and Several Opinions of The State Council on Promoting the Healthy Development of the photovoltaic Industry.
Article 2 Distributed photovoltaic power generation refers to the photovoltaic power generation facilities constructed and operated at or near the site where the user is located, which are mainly for self-use at the user's side, with excess electricity coming online and balanced adjustment in the distribution network system.
Article 3 All kinds of power users, investment enterprises, specialized contract energy service companies and individuals are encouraged to invest in the construction and operation of distributed photovoltaic power generation projects as project units.
Article 4 The competent energy department under The State Council shall be responsible for the guidance, supervision and administration of nationwide planning for distributed photovoltaic power generation; Under the guidance of the competent energy department under The State Council, the local competent energy departments shall be responsible for the supervision and administration of the planning and construction of distributed photovoltaic power generation in their own areas; Agencies dispatched by the National Energy Administration are responsible for the supervision of distributed photovoltaic power generation planning and policy implementation, grid-connected operation, market equity and operation safety in the region.
Article 5 Distributed photovoltaic power generation shall adopt the operation mode of "self-use, surplus electricity online, nearby consumption, and power grid regulation". Power grid enterprises adopt advanced technologies to optimize power grid operation and management, provide system support for distributed photovoltaic power generation operation, and ensure the safety of power users. Project investment and operation entities and power users in the same power supply area are encouraged to realize the local consumption of distributed photovoltaic power generation in various ways under the cooperation of power grid enterprises. [1]
Chapter II Scale Management
Article 6 The competent energy department under The State Council shall, in accordance with the relevant national plans for solar power generation and the development needs and construction conditions of distributed photovoltaic power generation in all regions, exercise total balance and annual guidance scale management for the projects requiring state fund subsidies. Projects that do not require subsidies from state funds are excluded from the scope of annual guidance scale management.
Article 7 The competent energy departments at the provincial level shall, in light of the development of distributed photovoltaic power generation in their own regions, put forward applications for the scale of projects that need state funds for subsidies in the next year. The competent energy department under The State Council shall, after coordinating and balancing the project resources, practical application and additional levy of renewable energy electricity price in different regions, issue the annual guidance scale for each region and fine-tune it in the middle of the year according to the implementation situation of each region.
Article 8 The annual guideline scale for distributed photovoltaic power generation issued by the competent energy department under The State Council shall automatically become invalid if the scale indicator is not used within the year. If there is a large gap between the scale indicator and the actual demand in the current year, the local energy administrative department may timely apply for adjustment.
Article 9 Local governments at all levels shall be encouraged to reduce the subsidy standards for distributed photovoltaic power generation through market competition. Priority will be given to distributed photovoltaic power generation projects whose applications are lower than the national subsidy standards. [1]
Chapter III Project filing
Article 10 The competent energy authorities at the provincial level and below shall, in accordance with the investment project administration regulations of The State Council and the annual guideline scale targets for distributed photovoltaic power generation in their own areas issued by the competent energy authorities of The State Council, carry out archival administration of distributed photovoltaic power generation projects. Specific measures for archival filing shall be formulated by the people's government at the provincial level.
Article 11 For project filing, the procedures shall be simplified as far as possible according to the characteristics of distributed photovoltaic power generation projects, and supporting documents such as power generation business license, planning and site selection, land pre-examination, soil and water conservation, environmental impact assessment, energy conservation assessment and social risk assessment shall be exempted.
Article 12 Distributed photovoltaic power generation projects that individuals use their own houses or are built in residential areas shall be directly registered by local power grid enterprises and centrally filed with local energy authorities for the record. Projects that do not require state funding subsidies are managed by provincial energy authorities themselves.
Article 13 Administrative departments and project units at all levels may not change the main items in the project archival documents on their own, including the subject of investment, the site of construction, the scale of the project, the mode of operation, etc. When it is necessary to change, the filing department shall handle it according to the procedure.
Article 14 If a distributed photovoltaic power generation project within the scope of the annual guideline scale fails to be completed and put into operation within two years from the date of filing, it shall be cancelled in the annual guideline scale and its eligibility for state fund subsidies shall be cancelled at the same time.
Article 15 The prefecture-level or county-level governments are encouraged to establish a one-stop service system for distributed photovoltaic power generation project filing and completion acceptance, which is combined with power grid access application, grid connection debugging and acceptance, electricity charge settlement and subsidy payment, etc., in light of local conditions, so as to simplify the handling process and improve management efficiency. [1]
Chapter IV Conditions for construction
Article 16 The buildings and facilities supported by a distributed photovoltaic power generation project shall be legitimate. If the project unit and the owners of the buildings, sites and facilities supported by the project are not the same subject, the project unit shall sign an agreement for the use or rent of the buildings, sites and facilities with the owners, and, depending on the mode of operation, sign a contract energy service agreement with the power users.
Article 17 The design and installation of distributed photovoltaic power generation projects shall comply with the relevant administrative regulations, equipment standards, construction engineering codes and safety codes. The units undertaking project design, consultation, installation and supervision shall have the corresponding qualifications stipulated by the State.
Article 18 Photovoltaic cell modules, inverters and other equipment used in distributed photovoltaic power generation projects shall pass the testing and certification of certification and accreditation institutions in conformity with the relevant technical requirements for connecting to the power grid. [1]
Chapter V Grid access and operation
Article 19 After receiving the grid-connection application from the project unit, the power grid enterprises shall provide grid-connection opinions within 20 working days, which may be extended to 30 working days for distributed photovoltaic power generation projects with centralized multi-point access.
Article 20 For distributed photovoltaic power generation projects connected to the power grid at a voltage level of 35 kV or below, the power grid enterprises at the prefecture or county level shall handle relevant grid-connection procedures in accordance with simplified procedures, and provide grid-connection consultation, installation of electricity meters, grid-connection commissioning and acceptance, and other services.
Article 21 For distributed photovoltaic power generation projects that are connected to the power grid at a voltage level of 35 kV or above and the power generated is used within the scope of the connecting network points, the power grid enterprise shall, in accordance with the access mode and the range of power consumption, perform grid-connection management and provide related services in a simple, timely and efficient manner.
Article 22 Power grid enterprises shall invest in the construction of distributed photovoltaic power generation projects connected to the public power grid, access system projects and the transformation of the public power grid caused by access. Access to the user-side distributed photovoltaic power generation project, and the user-side supporting project is invested by the project unit. Part of the transformation of the public power grid caused by the project's connection to the power grid is invested by the power grid enterprises.
Article 23 Power grid enterprises shall adopt advanced operation control technologies, improve the intelligent level of distribution networks, and create conditions for the acceptance of distributed photovoltaic power generation. In power supply areas where distributed photovoltaic power generation is installed on a large scale and accounts for a high proportion of grid load, power grid enterprises should build a comprehensive technical system combining grid-connected operation monitoring, power prediction and optimal operation of distributed photovoltaic power generation according to development needs, so as to realize efficient utilization of distributed photovoltaic power generation and safe operation of the system.
Distributed photovoltaic power generation project acceptance requirements
1. Acceptance of bracket installation
1. The support with fasteners should be firmly fastened, and there should be no pressure equality of spring pad.
2. The tilt Angle deviation of the support should not be greater than ±1°
3. The deviation of verticality and levelness of the support installation shall comply with the relevant provisions of the current national standard "Photovoltaic Power Station Construction Specifications".
4. The anticorrosive treatment of the bracket shall meet the design requirements.
2. Acceptance of photovoltaic module installation
1. The appearance, junction box and connector of the photovoltaic module should be intact, without scratches or hidden cracks.
2. The indirect plug-in connection of the photovoltaic module should be firm, and the connection line should be treated, neat and beautiful.
3. The inclination Angle deviation of the photovoltaic module shall not be greater than ±1°.
4. The edge height difference of adjacent photovoltaic modules is less than or equal to 2mm, and the edge height difference of the same group of photovoltaic modules is less than or equal to 5mm.
5. Insulation resistance of the square array shall meet the design requirements.
6. After the photovoltaic modules are connected in series, the open circuit voltage and short circuit current of the photovoltaic modules should be tested.
Iii. Acceptance of inverter equipment installation
1. The labels on the bus junction box are complete, and the box is securely connected to the support.
2. The appearance and main parts of the inverter shall not be damaged or damp, and the components shall not be loose or lost.
3. The inverter label should meet the requirements and indicate the connection point and polarity of the load.
4. The AC side interface of the inverter should be firm and reliable.
5. The connection between the inverter and the foundation should be firm and reliable.
6. The installation and acceptance of transformers and transformers shall conform to the relevant provisions of the current national standard "Construction and Standard Acceptance of Power Transformers, oil-immersed reactors and Transformers in Electrical Device Installation Engineering".
Iv. Acceptance of cable installation
1. The specifications of the DC cable shall meet the design requirements; Signs should be complete, correct and clear.
2. The fixing, bending radius, and distance of the DC cable should meet the design requirements.
3. All grounding contacts of the DC cable must be in good contact with the grounding pole, and the grounding resistance must meet the design requirements.
4. Fire prevention measures shall meet the design requirements.
5. The acceptance of AC cable installation shall comply with relevant provisions of the current national standard "Code for Construction and Acceptance of Cable Lines of Electrical Device Installation Engineering".
V. Acceptance of installation of power station monitoring system
1. The specifications, models, and positions of the cables comply with the design requirements. The cables are neatly arranged and without damage to the outer skin. The bundled cables should be straight and neat, evenly spaced between cable ties, and properly tightened.
2. The signal transmission mode and transmission distance of the signal transmission line should match, and the signal transmission quality should meet the design requirements.
3. The signal transmission line and power cable should be separated and grounded reliably.
4. The installation position of the environmental detector should have a wide field of vision, and the sunrise and sunless orientation in a year can not have more than 5 degrees of shade.
5. The communication system shall meet the requirements of dispatching automation, relay protection and safety automatic devices for power communication.
6. Acceptance of lightning protection and grounding installation
1. The lightning protection system of photovoltaic power station shall be constructed in accordance with the requirements of the design document.
2. The metal support of the ground photovoltaic system should be reliably connected with the main grounding network; The frame of the photovoltaic module should be grounded reliably.
3. The grounding of electrical equipment such as bus junction box and inverter should be firm and reliable with good conduction. The metal plate door should be reliably grounded with bare copper flexible wire and metal frame or ground bar.
4. The grounding resistance of each ground point of the photovoltaic power station should meet the design requirements (usually less than 4Ω).
0086-18958100293
