Solution of Large-scale Ground PV Power Station System

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It is applied in coastal beaches, Gobi wasteland and suburban open areas without shade, and it is an important part of the distributed generation system.



The large-scale ground PV power station is composed of PV power generation system, inverter system and grid access system. Power generation system basically includes PV cells, PV array bracket, DC combiner box, DC distribution cabinet, grid-connected inverter, AC distribution cabinet, step-up transformer, etc. in addition to the power station monitoring device and environmental monitoring device.

In the large-scale ground PV power station, solar module array outputs the electrical power under the solar radiation, and the power flows through the DC combiner box into the DC distribution cabinet and is converted into AC by the grid-connected inverter, and then the power is stepped up by the step-up transformer and connected into the grid and finally transported to the end users by the grid.

Solution of Large-scale Ground PV Power Station System


Energy storage is unnecessary for the entire power generation system, and the maximum utilization of electrical energy may be achieved with the grid support;

Reliable system, easy construction and maintenance;

Centralized and large-scale power generation by solar energy, energy-saving and environmental, contributing to the national energy-saving tasks;

Help to protect the good ecological environment, and adjust the structure of energy consumption;


Solution of Large-scale Ground PV Power Station System

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Q:Design all equipment in the power system
Divided into primary equipment and two equipmentOnce the equipment is responsible for the transmission of electrical energy, the two equipment is responsible for monitoring and protection of primary equipment.
Q:Power test equipment sales to find power supply company which departments?
The need to find a maintenance work area (a place called SF6, fix test area) switch belongs to them
Q:The concept of "remote message" in communication and power equipment
General electric power on the four remote, remote, telemetry, remote control, remote control, and now there is more than one remote viewing. Remote signal is generally refers to the opening and closing state of each switch, remote measurement is the voltage, current, temperature, etc..
Q:Warranty provisions for power supply lines
Implementation of electric power projects in accordance with the general agreement between the two sides agreed to the implementation of the warranty period, equipment installation and renovation works.If the contract does not specify the warranty period, the electrical pipeline.
Q:What is the concentrator of the power set
Centralized meter reading. Power system is an important part of power automation system, and it is an intelligent system which develops rapidly in recent years. The system integrates data acquisition (JY-RTU6640), intelligent control and network communication, and realizes remote data exchange and real-time monitoring. Through the centralized meter reading for power users, improve the accuracy, reliability and safety of meter reading work; can realize the real-time calculation of line loss; to detect anomalies and the phenomenon of stealing electricity meter; effective control of electricity arrears behavior; reduce the cost of management, so as to improve the modern management level of power marketing.
Q:What are the characteristics of the grounding of the power system and equipment?
Security grounding - is to protect the safety of the people and set the grounding point, such as: electrical equipment shell grounding, voltage transformer grounding two times, etc..
Q:Under the same voltage level, the rated voltage of the equipment is not exactly the same
And some appliances have no effect. For example: switching power supply, it can work in a wide range of voltage, the output voltage remains unchanged. It should be noted that, as long as the manufacturers in the normal operating voltage range, generally will not cause the state of work and security issues, can be assured that the use of.
Q:What is the installation equipment of the transformer on the power installation project
Installation of lightning arresterMost of the external factors that affect the operation of distribution transformers are from lightning accidents. Therefore, the transformer equipped with lightning protection devices, should be used in the synthesis of metal oxide arrester without gap insulation, the power frequency voltage withstand capability, good sealing, protection characteristics.
Q:The relationship between primary equipment and two equipment in power system
The electrical equipment of electric power system is divided into the primary equipment and the two equipment, and the primary equipment (also called the main equipment) is the main body of the power system
Q:Reactive power compensation methods commonly used in power equipment
For the operation of specific projects, the compensation can be divided into: in situ dispersion compensation and centralized compensation.In situ compensation is to set up a reactive power compensation device on the spot to compensate for a single device. However, the need for compensation equipment, large investment, maintenance management is not easy.

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