- Equipment management
Photovoltaic power plants cover a large area and have many types and quantities of equipment. Because these equipments come from different manufacturers, the equipments of different technical development levels are incompatible with each other, and there are problems such as high equipment failure hidden danger rate, unstable operation of photovoltaic power generation systems, and low utilization rate of solar energy resources, which seriously affect the economic benefits of photovoltaic power plants. . In order to strengthen the equipment management of photovoltaic power plants, fully grasp the technical status of the equipment, use, repair and manage the equipment well, the equipment management of photovoltaic power plants mainly includes the following parts:
- Monitoring indoor equipment management
(1) The monitoring room must be cleaned every day and kept clean, and the items are placed neatly and orderly.
(2) Operation and maintenance personnel must ensure the safety and normal use of monitoring computers, office computers, and tool cabinets.
(3) Problems with monitoring equipment must be solved in time.
- Equipment management in the power distribution room
(1) The operation and maintenance personnel must have relevant photovoltaic knowledge and electrical engineering knowledge, be familiar with the safety operation procedures, be familiar with the performance and operation methods of the power supply system and various equipment in the power distribution room, and have the ability to take measures in abnormal situations.
(2) The operation and maintenance personnel must have a high sense of responsibility, and strictly implement the inspection system, the shift system and other regulations.
(3) When entering and exiting the power distribution room and inspecting the power distribution device, the door should be closed easily.
(4) No matter whether the equipment is live or not, the operation and maintenance personnel shall not work alone.
(5) When inspecting the equipment in the power distribution room during thunderstorms, you should wear insulating shoes, and should not be close to the lightning arrester and lightning rod.
(6) High-voltage operators must wear insulating gloves.
(7) The switch trips for some reason, and it is strictly forbidden to send electricity without identifying the reason.
- Spare parts management
Photovoltaic power station spare parts are spare parts and spare parts that are used for power station fault repair and emergency defect treatment, and are managed according to quotas, including power station photovoltaic power generation components, combiner boxes, inverters, box-type transformers and other power generation equipment, electrical primary equipment, electrical secondary equipment Equipment, safety automatic devices, consumables and safety technical labor protection facilities, etc.
- Spare parts management principles
1) Spare parts are subject to unified standards and dedicated management. Enterprises should formulate a unified catalog of power station spare parts, management specifications, business processes and configuration principles.
(2) Improve the mechanism and centralize procurement. Establish a standardized supply guarantee mechanism for the procurement of power station spare parts. In principle, the spare parts are centrally purchased by the enterprise.
(3) Coordinate resources and information sharing. Coordinate the warehousing and spare parts resources of the owners in various regions, divide the material attributes and characteristics, build an integrated information sharing platform, and realize the unified management and efficient allocation of spare parts.
- Spare parts management and general requirements for use
In order to standardize and effectively manage the spare parts of photovoltaic power plants, it is necessary not only to be evidence-based, but also to be standardized and tidy. Some spare parts should be inspected regularly. The specific storage and use should follow the following systems:
(1) Instruments, tools, spare parts, spare parts (spare disks), and technical data should be managed by a special person (part-time) and kept properly.
(2) Regularly formulate a plan for components and materials, and establish a receipt and consumption account to ensure that the accounts and materials are consistent.
(3) Commonly used tools and components should be quantified, positioned, and placed in categories, so that they are clear at a glance and easy to use. After consumption, they should be replenished in time.
(4) Damaged tools and components should be checked and dealt with in time to prevent the mixing of new and old.
(5) The meter should conform to the national legal measurement unit, and should be calibrated regularly.
(6) The meter that has not been used for a long time shall be energized and tested once a month, and the energization time shall not be less than 30 minutes.
(7) The drawings, manuals and technical data of various equipment and instruments must be complete and complete.
(8) Flammable and explosive materials such as oil products should be stored separately and properly.
(9) All kinds of information should be registered and stored in a catalog, and the records should be clear.
(10) Various reports and records are organized, bound and archived on a monthly basis, and properly managed according to the storage period.
(11) Instruments, tools, and materials are generally not allowed to be borrowed. If you really need to borrow or borrow them, you should obtain the consent of the supervisor and go through the borrowing registration procedures.
- Spare parts classification
In order to strengthen the cost control of photovoltaic power plants and reduce production and operation costs, the spare parts of photovoltaic power plants are classified and managed according to their importance and value. The importance of spare parts can usually be divided into four categories: A, B, C, and D.
(1) Class A spare parts: refers to important complete equipment, such as box-type transformers, cable T-junction boxes, inverter combiner boxes, photovoltaic modules, switch cabinets, SVG and other spare parts.
(2) Class B spare parts: refers to special spare parts, such as power modules, PCB boards, drive boards, detection boards, control boards, fuses, current sensors, power boards, high-voltage current-limiting fuses, universal transfer switches, DC fuses, SVG fans, on-load respirator, tap changer controllers, gas relays, capacitors and other spare parts.
(3) Class C spare parts: inverter dustproof net, inverter room ventilation window, box-type transformer insulating oil, box-type transformer surge protector, combiner box insurance base opening and closing button, indicator light, air switch, General spare parts such as heaters, small travel switches, fire extinguishers, etc.
(4) Class D spare parts: refers to the waste spare parts, including the overhauled and purchased waste machines and parts, such as inverters, combiner boxes, American-style box-type transformers, high-voltage cabinet switch modules, low-voltage grid-connected cabinets , circuit breaker, detection board, control board, IBT, etc.
- Spare parts configuration principle
The principle of spare parts configuration refers to the spare parts configuration standard formulated by the unified organization of the enterprise in order to meet the emergency defect treatment and fault repair of the power station (see Figure1). The configuration principle should comprehensively consider factors such as the layout of the warehouse network and the versatility of spare parts in the supply cycle, so as to meet the needs of emergency repairs and reduce repeated reserves.
The reserve quota of spare parts refers to the spare parts determined according to the relevant configuration principles, in combination with the equipment size and equipment age corresponding to the spare parts and equipment failures. The storage quantity and related information should include the spare parts code, name, specification and model, technical parameters, quota quantity, reference price, supply cycle and storage location.
