Wind farm SVC reactive adjusting capability testing system
It is a technology of adjustment ability and test system, which is applied in the direction of control/regulation system, test/monitoring control system, electrical test/monitoring, etc. It can solve human interference, large error of measurement results, and difficulty in accurately measuring SVC reactive power adjustment ability and other problems to achieve the effect of improving accuracy, reducing uncertainty, and being easy to implement on site
Inactive Publication Date: 2017-08-18
STATE GRID LIAONING ELECTRIC POWER RES INST +2
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Problems solved by technology
It is difficult to accurately measure the reactive power regulation capability of SVC due to the need for high cooperation from manufacturers and the serious human interference, which makes it difficult to accurately measure the reactive power regulation capability of SVC. Therefore, the reactive power regulation capability test system is adopted. Conduct reactive power adjustment capability test of SVC
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[0031] The present invention is a test system for wind farm SVC reactive power adjustment capability, such as figure 1 as shown, figure 1 It is a schematic diagram of the testing system of the present invention. The test system includes a data acquisition device and a reactive power command issuing device. The reactive power command issuing device can issue the following commands to the SVC by connecting with the SVC figure 2 The target reactive power command, and transmit the issued command to the data acquisition device; the data acquisition device collects the three-phase current value of the SVC outlet and the three-phase voltage value of the low-voltage side of the main transformer, and calculates the reactive power value issued by the SVC, through The phase-separated calculation method obtains the reactive power value and adjustment accuracy of the SVC at the rated voltage.
[0032] During the present invention work, concrete steps are as follows in fact:
[0033] 1....
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The invention relates to the power system technology field, especially relates to a wind farm SVC reactive adjusting capability testing system. Requirements of a national standard (Q / GDW11064-2013 wind farm static var compensator technical performance and test specification) on wind farm SVC reactive adjusting capability is analyzed. According to the requirement of the national standard, testing points and a testing flow are determined, and a reactive adjusting capability testing system is used to transmit a predetermined reactive value, and is used to acquire the three-phase voltage value of the low voltage side of the main transformer of the wind farm and the three-phase current value of the outlet of the SVC. The reactive adjusting capability testing system is used to acquire the reactive output condition of the SVC. The maximal reactive output value and the adjusting precision of the wind farm SVC at a rated voltage are calculated by a measured voltage value and a measured reactive value. Whether the adjusting precision meets the requirements is verified. The wind farm SVC reactive adjusting capability testing system is advantageous in that operation is simple, and on-site realization is facilitated; the reactive adjusting capability of the SVC is reflected in a real way; intervention of static var compensator manufacturers is not required during a testing process, and manual intervention is prevented, and then uncertainty of on-site testing is reduced.
Description
technical field [0001] The present invention relates to the technical field of electric power systems, in particular to a test system for the reactive power adjustment capability of SVC in wind farms. SVC stands for static reactive power compensation device, and is referred to as SVC hereinafter. Background technique [0002] At present, when the grid structure is weak, the dynamic reactive power compensation device in the wind farm is responsible for an important task. The dynamic reactive power compensation system needs to balance the reactive power demand of the wind farm under normal operation. In wind farms equipped with SVC, the reactive power adjustment capability of SVC bears most of the reactive power output capacity. The SVCs in some wind farms have insufficient reactive power output capacity due to aging equipment or substandard inspections at the factory, which affects wind power. normal operation of the field. In order to improve the operational reliability of ...
Claims
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Login to View More IPC IPC(8): G05B23/02
CPCG05B23/0243G05B2219/24065
Inventor 付尧李胜辉路俊海戈阳阳谢赐戬李庆张金平贺敬刘劲松朱钰王刚刘芮彤
Owner STATE GRID LIAONING ELECTRIC POWER RES INST