A method for real-time generation of control units based on topology coloring in automatic voltage control
A technology of voltage control and control unit, which is applied in the direction of AC network voltage adjustment, circuit device, AC network circuit, etc. It can solve the problems of reasonable reactive power, difficulty in meeting AVC real-time control, and slow speed.
Active Publication Date: 2016-05-04
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0007] 2) Reasonable reactive power
This method is slow when the scale of the substation is large, and it is difficult to meet the requirements of AVC real-time control
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Embodiment
[0049] The grid structure of a specific embodiment of the present invention is as figure 2 As shown, this embodiment is a method for generating a control unit of a 500kV substation, in the figure, B 1 , B 2 is a 500kV busbar, B 3 , B 4 It is a 220kV busbar, B 5 , B 6 is a 35kV busbar, Br 5 For 35kV bus tie switch, Br 8 is a 220kV bus tie switch, T 1 , T 2 is the transformer, Cp 1 –Cp 4 For the capacitive reactor.
[0050] The method for generating a control unit in this embodiment specifically includes the following steps:
[0051] 1) When the calculation period comes, this embodiment sets 30 seconds as one calculation period, first obtains the complete topology structure of the current substation from the power grid monitoring system, and stores it in the data buffer; the topology structure includes various equipment in the substation and the connection relationship between devices; the topology of this embodiment is as follows figure 2 As shown, including two ...
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The invention relates to a method for automatically generating a control unit in the automatic voltage control in real time on the basis of topology coloring in a transformer substation, and belongs to the technical field of power system automatic voltage control. The method includes the steps of eliminating a transformer winding and all disconnected isolating switches and circuit breakers in the transformer substation, conducting topology coloring analysis on the rest of the structure of the transformer substation, determining logic buses connected with the transformer high-voltage side and the transformer medium-voltage side according to the topology island where the connection terminals of a transformer high-voltage side winding and a transformer medium-voltage side winding are located, establishing the new control unit according to the relations between a transformer and the logic buses or adding the transformer to an existing control unit, determining a low-voltage logic bus connected with a transformer low-voltage side winding according to the topology island where the connection terminal of the transformer low-voltage side winding is located, adding the low-voltage logic bus into the control unit, determining the logic buses connected with all reactive-load compensation devices in the transformer station according to the topology islands where the connection terminals of the reactive-load compensation devices are located, and adding the reactive-load compensation devices to the control unit. By means of the method, the transformer control unit can be rapidly and correctly formed.
Description
technical field [0001] The invention belongs to the technical field of automatic voltage control of power systems, in particular to a method for generating control units in real time based on topology coloring in substation automatic voltage control. Background technique [0002] Automatic voltage control (hereinafter referred to as AVC, AutomaticVoltageControl) system is an important means to achieve power grid security (increase voltage stability margin), economy (reduce network loss), and high-quality (increase voltage qualification rate) operation. The AVC system architecture is based on the grid energy management system (EMS), which can use the real-time operation data of the grid to scientifically make the best reactive power and voltage adjustment scheme from the perspective of overall grid optimization, and automatically send it to power plants, substations, and lower-level grid dispatchers Institutional execution. The AVC system takes voltage safety and high qualit...
Claims
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IPC IPC(8): H02J3/16
CPCH02J3/16H02J2203/20Y02E40/30
Inventor 王双汤磊韩宇龙于磊谷文旗常晓慧刘伟张蕾王帅满张宝英金言朱梅刘永锋王彬
Owner STATE GRID CORP OF CHINA