Photovoltaic power station involves 32 links and formalities in the grid!

This article takes Tianjin's "Operating Rules for Photovoltaic Power Plants Grid-related" as an example to introduce the grid-related procedures of photovoltaic power plants and the materials required for each process.

One project development and modification record:

Photovoltaic enterprises should truthfully provide a project introduction when filing a project, including the project name (the unified standard is: project unit abbreviation + construction site + filing scale + "photovoltaic power generation project"), investor, construction scale and total investment , construction site, supporting buildings and implementation (land implementation), land area and nature, power generation mode (all self-use, self-generated and self-consumption surplus power grid, full grid access), key technologies, planned start (completion) time etc., and specify the above main contents in the filing application form.
 

Second access system plan:
 

The construction unit brings relevant information to the State Grid Tianjin Electric Power Company Economic and Technological Research Institute (hereinafter referred to as the "Economic Research Institute") to apply for the formulation of the proposed photovoltaic project grid connection plan. The required information basically includes:
 

The original and copy of the manager's ID card and the original of the legal person's power of attorney (or the original and copy of the legal representative's ID card);
 

Enterprise legal person business license, land certificate and other project legality supporting documents;
 

Project location map (indicating directions, adjacent roads, rivers, etc.) and site lease related agreements;
 

Project feasibility study report; the approval of the government investment authority for the preliminary work of the project (the project needs to be approved).
 

After the acceptance, the research institute will formulate the access system plan after on-site investigation.
 

Three access system approval:
 

With the access system plan issued by the Economic Research Institute, the project owner went to the State Grid Tianjin Electric Power Company (hereinafter referred to as "the Municipal Bureau") for a special review, and obtained the approval, that is, the access system approval.
 

Four electricity price approval:
 

The project owner submits the application documents for electricity price approval to the Price and Charges Section of the Price Bureau, and provides relevant information as required (basically including the project application report, the filing documents of the National Development and Reform Commission, the approval of the access system, and the planned start/completion time of the project, etc.).
 

Five Preliminary Design Review:
 

The project owner shall apply to the Marketing Department of the Municipal Bureau to organize a preliminary review meeting based on the feasibility study report, the access system plan, the approval of the access system, and the preliminary design drawings. The construction design blueprint drawn by the design institute must be consistent with the spirit of the "Preliminary Design Review Opinions", and the project owner organizes the bidding, procurement, construction and other work matters of the photovoltaic power station according to the construction design drawings.
 

Six  Interval reconstruction of access substations and construction of outgoing lines:
 

The project owner brings the business license, the filing documents of the National Development and Reform Commission, the approval of the access system, the preliminary design review comments, the construction drawings and the primary system drawing (design blueprint) to the special office of the Transportation Inspection Department to fill in the "Grid-connection Application Form for Photovoltaic Power Generation Projects". After the acceptance, the infrastructure department of the district power supply branch will arrange the substation interval and line construction and other related matters. The project owner assists the power grid company to carry out the feasibility study design of the transmission project, and jointly promote the simultaneous construction and operation of the transmission project and the photovoltaic power generation project.
 

Seven Project Quality Supervision Declaration:
 

Before the project starts, the construction unit must make a project registration declaration as required. When applying, it should meet the following requirements: the project has obtained government approval (approval) construction documents, the survey, design, construction, and supervision units have completed the bidding, the main management personnel of each project department of the construction unit have been in place, and the relevant testing units have been identified. The construction unit submits the "Power Engineering Quality Supervision Registration Application" to the Tianjin Electric Power Construction Engineering Quality Supervision Center Station (hereinafter referred to as "Quality Supervision Station") for declaration.
 

Eighth Project Quality Supervision Registration:
 

The construction unit shall carry the "Application for Electric Power Engineering Quality Supervision Registration", the approval document, a copy of the qualification certificate of the survey, design, construction, commissioning, and supervision unit, and the main management personnel of the survey, design, construction, commissioning, and supervision unit shall practice accordingly A copy of the qualification certificate, go to the quality supervision station for formal registration. If the requirements are met, the Quality Supervision Station will issue the Electric Power Engineering Quality Supervision Registration Certificate and the Electric Power Engineering Quality Supervision and Inspection Plan.
 

Nine First and Civil Engineering Quality Supervision and Inspection:
 

After the infrastructure construction of the project is completed, the project owner can apply to the quality inspection station to arrange the quality supervision and inspection of the first and civil engineering stages, which can be divided into project entity inspection and project data inspection. The project entity is mainly civil construction and steel structure installation and construction, which covers foundation, main structure, decoration, building roof, water supply, drainage and heating, building electrical, intelligent building, ventilation and air conditioning, etc. The engineering materials mainly include: project Supporting documents and project quality management documents. If the acceptance requirements are met, the "Notice of Transition of Electric Power Engineering Quality Supervision and Inspection" will be issued, and the project will enter the next stage of the process.
 

Ten Schedule Name Number:
 

When the construction of the photovoltaic power station and the electrical part of the transmission line is basically completed or the unfinished part is not much different from the drawings, the project owner shall bring the access system plan, the access system approval, the electrical construction drawings, the main equipment list, and the random equipment. The information will be submitted to the Deputy Director of the Regulation Center of the Municipal Bureau (Wang Hailin) ​​to apply for the compilation of the "Primary System Diagram of xx Photovoltaic Power Stations for Dispatching", and Wang will draw up a sketch. The draft is drawn into the official CAD version by the responsible person, and sent to the mode class of the city bureau's control center, the deputy director of the control center, etc., and it will take effect after approval. It is responsible for sending the "Primary System Diagram of xx Photovoltaic Power Plant for Dispatching" to the relevant departments of the municipal company and the district/branch company, and at the same time, it is sent to the project owner in the form of email, that is, the dispatching name number.
 

Eleventh Gate Form Application:
 

The project owner brings the approval of the access system of the policy department and the scheduling and naming number to the transaction center of the municipal bureau (criminal meritorious service) to declare the customs form. After the customs materials are reviewed and passed, the information will be forwarded to the policy department for special responsibility. (Materials to be provided: 1. Design drawings of electric energy metering at the gateway; 2. Dispatch naming number; 3. Diagram of primary system of booster station of photovoltaic power station; 4. Scheme of access system; 5. Approval of access system.)
 

Twelve Communication Systems:
 

After the line is connected, the construction unit shall apply to the Automation Special Office for arrangement of access to the dispatching data network, opening of dispatching telephones and communication debugging and other related matters based on the approval of the access system and the dispatching naming number.
 

Thirteen  Relay protection setting value:
 

The construction unit shall provide protection equipment instructions and drawings. The protection of the new bay in the substation and the optical fiber differential protection of the outgoing line (hereinafter referred to as "optical difference protection") setting values ​​are the responsibility of the county power supply company. Except for the out-of-step disconnection protection in the photovoltaic power station, which is given by the protection team of the Planning Office of the Municipal Bureau, the rest of the protection values ​​are calculated by the project owner. sign to confirm.
 

Fourteen telecontrol information and communication address:
 

The project owner provides the PV power station network topology, secondary equipment list (manufacturer, model), and "XX Photovoltaic Power Station Telecontrol Information Sample Sheet" to the Municipal Automation Bureau. Responsible for compiling the "XX Photovoltaic Power Station Telecontrol Information Table" according to the above documents, which currently mainly includes telemetry, remote signaling, remote control, AGC remote signaling, AGC telemetry, AGC remote adjustment and optical power prediction. After the data is reviewed and complete, the automation is responsible for compiling and sending to the project owner the "Data Network Communication Address Table" and "XX Photovoltaic Power Station Telecontrol Information Table" related to the new photovoltaic power station. At the same time, the municipal bureau and the county-level power supply company began to set up the background within their respective regulatory scope.
 

Fifteen  Optical difference protection debugging, scheduling data network debugging:
 

After the optical cable laying, optical fiber splicing, and the optical channel have been tested and passed, you can apply for debugging to the automation department of the county power supply company, and arrange the maintenance personnel on duty to carry out optical difference protection and scheduling together with the manufacturers and test personnel. Data network debugging, etc.
 

Sixteen  Remote control:
 

After completing the in-station debugging of the photovoltaic power station, the background construction of the power supply company, the debugging of the dispatching data network, and the establishment of communication between the remote control device and the main station, you can apply for the remote control joint debugging. After the application is approved, the power supply company will inform the project owner of the contact phone number of the dispatching duty room (dispatching dedicated line or encrypted landline). The project owner can hand over the contact information to the back-end manufacturer and the person in charge of on-site debugging, and then the joint debugging of telecontrol information can be started. (AGC has basic debugging before grid connection, and formal debugging will be carried out after grid connection).
 

Seventeen   Quality supervision and inspection in the pre-commissioning stage of grid connection:
 

That is, after the completion of construction, installation, and commissioning, the quality inspection and acceptance before grid connection. This is the most stringent one, and it is also divided into project entity acceptance and engineering data acceptance, covering lightning protection and grounding, electrical equipment construction quality, electrical five-proof inspection, fire protection facilities and filing status, safe electrical protection supplies and tools and other physical projects It also emphasizes test reports, commissioning plans, operation specifications, emergency plans, organizations, certificates of operation and maintenance personnel and other certification documents and measures to ensure safe operation, and generally focuses more on the electrical profession. The quality supervision station issues the "Expert Opinion on Power Engineering Quality Supervision and Inspection" (including rectification items, expert opinions of the acceptance group, etc.), and after the rectification meets the requirements, the quality supervision station issues the "Power Engineering Quality Supervision and Inspection Grid Connection Notice".
 

Eighteenth grid connection preparation meeting:
 

After all infrastructure construction, electrical commissioning, and telecontrol joint commissioning have been completed, and the quality supervision station has issued a document that has passed the quality supervision, inspection and acceptance, the project owner will issue an invitation letter to the municipal bureau and various departments of the county power supply company to participate in the grid connection Preparatory meeting. The first is to summarize all the issues that are closely related to grid connection, and the second is to discuss the power inspection of the power station.
 

Nineteen High Voltage Electricity Inspection:
 

The project owner shall provide relevant materials (electrical test report, electrical construction drawings, equipment random data, etc.) to the marketing department (Men Yingjun) for review before grid-connection acceptance. The company conducts electricity inspection of photovoltaic power stations, summarizes all problems on site and issues a rectification report, the essence of which is grid-connected pre-acceptance.
 

Twenty Personnel Training:
 

After the pre-acceptance, the control center will visit the photovoltaic power station site to conduct centralized training for the operation and maintenance personnel, check the high-voltage electrician's grid access permit, and issue the dispatching contact list file.
 

Twenty-one grid-connected review:
 

The project owner must complete all rectifications before re-checking. After waiting for the acceptance report of the new substation primary and secondary equipment and lines issued by the transportation inspection department of the city, district/branch company, the marketing department of the power supply company will issue a unified acceptance report - "xx Photovoltaic Power Station Acceptance Opinions", and It is clearly stated that the power station can be put into operation after passing the inspection and acceptance.
 

Twenty-two  Power Harvesting Terminals:
 

Apply to the Special Office for Dispatching and Automated Electric Energy Metering of the Municipal Bureau for the power collection terminal - the main station test of the Municipal Bureau. The project owner needs to fill in the "XX Power Plant Electricity Information Sample Form" given by the company according to the facts.
 

Twenty-three  Gateway Table Installation:
 

Refer to the "Technical Documents for Acceptance and Acceptance of the Gateway Electric Energy Metering System before Operation". After the on-site acceptance of the policy department, trading center, and metrology department of the municipal bureau and the county power supply company, the power supply company will install the metering gate for the project owner. surface.
 

Twenty-four  Other documents required before signing the agreement:
 

The "XX Photovoltaic Power Station Grid-connected Detection and Test Project" and "XX Photovoltaic Power Station Grid-connected Test Technical Plan" issued by the Power Technology Center of the Electric Power Science and Technology Research Institute of the State Grid Tianjin Electric Power Company; and Tianjin Jin Telecom Technology Co., Ltd. Signed "Communication Operation and Maintenance Technical Service Contract"; "XX Photovoltaic Power Station Reverse Power Transmission Plan", "XX Photovoltaic Power Station Grid-connected Startup Plan" approved by the power company; "xx Photovoltaic Power Station Typical Operation Ticket".
 

Twenty-Five  Agreement Signed:
 

The construction unit signed the "Power Purchase and Sale Contract" and "Grid-connected Dispatching Agreement" with the "xx Photovoltaic Power Station Acceptance Opinion" and the documents listed in Article 24. (Required information: dispatching name number, personnel List, fixed telephone), and then the construction unit will sign a "dispatching agreement" with the power supply company at the project site (dual power supply users). After the three contracts are complete, apply to the Municipal Bureau for a start-up meeting for grid connection.
 

Twenty-six  Grid connection kick-off meeting:
 

The control center of the city bureau is responsible for arranging the meeting time, place, participants, etc., making the final strategic deployment for the reverse power transmission and grid connection, and arranging the time point of the reverse power transmission and grid connection operation in detail.
 

Twenty-seven Tickets:
 

According to the time point of reverse power transmission and grid-connection operation formulated at the grid-connection kick-off meeting and the signed "Dispatching Agreement", the construction unit submits the "XX Photovoltaic Power Station Start-up and Grid-connected Commissioning Application Ticket" to the control center, namely Schedule an action ticket.
 

Twenty-eight reverse power transmission and load measurement vectors:
 

The transportation inspection department of the county electric power company is responsible for sending it to the outlet cabinet of the XX photovoltaic power station. When the construction unit hits its own high-voltage equipment in the photovoltaic station, it must first hit the SVG and other reactive power compensation devices and put it into operation with load to detect the light difference. , The correctness of the mother differential protection action. After completing the measurement vector with load, the construction unit completes the impact of the remaining high-voltage equipment in accordance with the dispatch instructions until the AC side switch of the grid-connected inverter (Note: the inverter is not turned on, and the box-type booster substation is powered on).
 

Twenty-nine grid-connected start:
 

After sending the power back to the box-type booster substation and running it safely for 24 hours, apply to the regulation center of the Municipal Bureau to start the grid-connected inverters one by one and put them into the photovoltaic power generation unit.
 

Thirty Commissioning and testing after grid connection:
 

Operating background configuration and debugging of photovoltaic area (including dispatching point-to-point joint commissioning); AGC/AVC debugging (including dispatching point-to-point joint debugging); Photovoltaic Power Station Grid-connected Detection Technical Scheme", the relevant grid-related tests were completed by the Electric Power Research Institute.
 

Thirty-one  Acceptance at the gateway electric energy metering point:
 

Refer to the "Technical Documents for Acceptance and Acceptance of the Gateway Electric Energy Metering System after Operation" and submit the "Application for the Acceptance of the Gateway Electric Energy Metering Point of xx Power Station" to the State Grid Tianjin Electric Power Company. Professionals from the center, marketing department, metrology department and other professionals conduct on-site inspection and issue an inspection report, which is one of the supporting documents for the transfer of the power station to commercial operation.
 

Thirty-two  Quality Supervision Final Inspection:
 

Complete acceptance. If the requirements for completion acceptance are met, the person in charge of the construction unit (project) shall organize the person in charge of the construction (including subcontracting), design, supervision and other units (project) to conduct completion acceptance. The quality supervision station conducts on-site supervision on the organizational form, acceptance procedures, and implementation of acceptance standards for project completion acceptance. After the completion acceptance, the certification document of the completion acceptance report issued by the quality supervision station is one of the key documents for applying for the electric power business license (power generation).
Source: Shandong Jieyang New Energy Co., Ltd.  Reprint