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Debugging method of grid-connected photovoltaic power station

A debugging method and photovoltaic power station technology, applied in photovoltaic power generation, photovoltaic modules, photovoltaic system monitoring, etc., can solve problems such as unfavorable power station safe and stable operation, and achieve the effect of reducing the possibility of sudden power failure accidents

Active Publication Date: 2021-09-21
SEPCO ELECTRIC POWER CONSTR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] After the photovoltaic modules and electrical equipment of the power station are installed, electrical debugging must be carried out. At present, electrical debugging includes photovoltaic module testing, inverter debugging, box-type transformer testing, etc., and high-voltage cables and other equipment have not been retested, which is not conducive to ensuring the power station Safe and stable operation

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  • Debugging method of grid-connected photovoltaic power station
  • Debugging method of grid-connected photovoltaic power station

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] The debugging method of the grid-connected photovoltaic power station of the present invention includes testing of photovoltaic modules, debugging of inverters, testing of box-type transformers, carrying out withstand voltage testing of high-voltage cables, and debugging of relay protection systems. specifically:

[0033] Photovoltaic module testing

[0034] When all components are connected according to the design requirements, the fuse circuit breaker in the combiner box is in the disconnected position; the internal lightning protection module is installed and grounded firmly, reliably, and has good conduction; the communication of the monitoring circuit is good; the polarity of the test photovoltaic string is correct; Under the same test conditions, the voltage deviation between the same type of photovoltaic strings should not be greater than...

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Abstract

The invention discloses a debugging method for a grid-connected photovoltaic power station, which includes testing of photovoltaic components, debugging of inverters, testing of box-type transformers, carrying out withstand voltage testing of high-voltage cables, and debugging of relay protection systems. By adding withstand voltage tests on high-voltage cables and debugging the relay protection system, hidden faults in cables and relay protection systems can be found in advance, reducing the possibility of sudden power outages caused by cable and relay protection system failures in the future sex.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a debugging method for a grid-connected photovoltaic power station. Background technique [0002] In recent years, with the social emphasis on ecological and environmental protection, renewable energy has been vigorously developed, and photovoltaic power generation has become an irreplaceable part due to its advantages such as no exhaustion, no pollution, and no geographical restrictions on resource distribution. After years of development and the continuous improvement of production technology, the conversion efficiency of photovoltaic power generation modules has gradually increased, while the production cost has continued to decline, and a large number of photovoltaic projects have been developed in various places. According to statistics, in 2018, the global photovoltaic installation volume was about 103.3GW. In addition, the price reduction of photovolt...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S50/00G01R31/327G01R31/12G01R1/04
CPCG01R1/0416G01R31/12G01R31/327H02S50/00Y02E10/50
Inventor 冯军胡俊谯华林
Owner SEPCO ELECTRIC POWER CONSTR CORP