Wind power plant current collection line monitoring system, method and device

Abstract

The invention provides a wind power plant current collection line monitoring system. The monitoring system comprises a plurality of detection terminals, a transmission network, a database and a monitoring center, wherein the detection terminals are distributed at a plurality of positions in a wind power plant current collection line, and each detection terminal comprises a detection module, a terminal label and a time module; the detection module is used for collecting equipment state information on the current collection circuit and generating collection information; the time module generates acquisition time according to the generation time of the equipment state information; the detection terminal generates acquisition information according to the terminal label, the acquisition time and the equipment state information, and sends the acquisition information to a database; the acquired information is sent to a database through a transmission network; the database is used for permanently storing all the data in the database and sending the state information to the monitoring center; and the monitoring center analyzes and processes the acquired information to generate diagnosis information.

Description

technical field [0001] The invention relates to the field of wind power, in particular to a monitoring system, method and device for collecting lines of a wind farm. Background technique [0002] As the proportion of wind power generation capacity in the regional power grid is increasing, it brings development opportunities to the power system and at the same time brings new challenges to its safe and stable operation. Weak power grid and poor stability. Once the power grid fails, the wind farm fans will go off-grid, causing huge losses. Most of the 35kV collector lines in wind farms are overhead lines. Poor, it is very easy to cause grounding short-circuit fault due to the quality of collector line equipment and weather reasons. Unable to find the fault point due to the weather or large gear distance, which will bring huge economic losses; [0003] At present, all lines with voltage levels of 110kV and above are equipped with fault recording devices. After a fault occurs,...

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Problems solved by technology

[0002] As the proportion of wind power generation capacity in the regional power grid is increasing, it brings development opportunities to the power system and at the same time brings new challenges to its safe and stable operation. Weak power grid and poor stability. Once the power grid fails, the wind farm fans will go off-grid, causing huge losses. Most of the 35kV collector lines in wind farms are overhead lines. Poor, it is very easy to cause grounding short-circuit fault due to the quality of collector line equipment and weather reasons. Unable to find the fault point due to the weather or large gear distance, which will bring huge economic losses;

[0003] At present, all lines with voltage levels of 110kV and above are equipped with fault recording devices. After a fault occurs, the fault phase difference and fault distance can be reported in time. Substation personnel can easily find the fault point, which brings great convenience to fault handling. However, the existing 35kV collector line does not have an online monitoring device and fault identification function. After a fault occurs, it is impossible to judge the area of ​​the fault point, and it does not have the fault intelligent identification function. condition maintenance

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