Method and device for determining voltage and reactive power sensitivity of automatic voltage control system
A technology of voltage reactive power and control system, which is applied in circuit devices, reactive power compensation, AC network voltage adjustment and other directions, can solve the problems of affecting the control effect of AVC system and low accuracy, and achieves the advantages of online voltage reactive power control, accuracy and so on. High and reduce the effect of external network information
Active Publication Date: 2017-01-04
GUANGDONG POWER GRID CO LTD SHANTOU POWER SUPPLY BUREAU
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However, the voltage reactive power sensitivity results obtained by this method are quite different from the actual voltage changes of the relevant nodes before and after the reactive power compensation per unit capacity, and the accuracy is not high, which affects the control effect of the AVC system, etc.
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[0026] The specific implementation of the method for determining the voltage and reactive power sensitivity of the automatic voltage control system of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0027] Such as figure 1 As shown, a method for determining the voltage reactive power sensitivity of an automatic voltage control system includes steps:
[0028] S110. Divide the power grid network into a target area network, a buffer network and an external network, and collect current status information of the power grid network;
[0029] S120. According to the state information, use the external network equivalent method of retaining the buffer network to perform equivalent value on the external network, and the equivalent external network, target area network and buffer network form a new power grid network;
[0030] S130. Adjust the generator node type in the new grid network;
[0031] S140. According to the voltage an...
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The invention discloses a method and device for determining the voltage reactive sensitivity of an automatic voltage control system. The method includes the steps that a power grid is divided into a target area network, a buffering network and an external network, and the state information of the power grid at the current time is collected; according to the state information, equivalence is carried out on the external network through the external network equivalence method reserving the buffering network, and the external network obtained after equivalence, the target area network and the buffering network form a new power grid; the generator node type in the new power grid is adjusted; the voltage reactive sensitivity between PQ nodes in the target area network after the generator node type is adjusted is determined according to a voltage reactive sensitivity matrix between the PQ nodes. The target area network and a key boundary node are taken as analysis objects, and the formed equivalence network can largely reduce external network information, so that the accuracy of the voltage reactive sensitivity is high, time is saved, and efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of automatic voltage control systems, in particular to a method for determining voltage reactive power sensitivity of an automatic voltage control system and a device for determining voltage reactive power sensitivity of an automatic voltage control system. Background technique [0002] With the continuous construction of ultra-high voltage AC-DC transmission lines, the interconnection between regional power grids has been continuously strengthened, and my country's power grid has developed into a large-scale AC-DC interconnected power grid. The continuous increase of grid capacity, ultra-high voltage long-distance power transmission and large fluctuations in daily load all put forward higher requirements for the voltage and reactive power control of the grid. Therefore, constructing a suitable automatic voltage control (AVC, Automatic Voltage Control) system to realize a reasonable distribution of reactive ...
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IPC IPC(8): H02J3/16
CPCH02J3/16H02J2203/20Y02E40/30
Inventor 黄辉罗松青林捷郑惠娟丁冲曾峰陈少怀郭文鑫邓应松秦金平廖绍谦蔡安铭黄熙恒林冠强王云柳
Owner GUANGDONG POWER GRID CO LTD SHANTOU POWER SUPPLY BUREAU