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Voltage reactive power optimization calculation method based on prime-dual interior point method

A technology of voltage reactive power optimization and calculation method, applied in reactive power compensation, AC network voltage adjustment and other directions, can solve problems affecting power grid voltage quality, voltage fluctuation, voltage instability, etc., to reduce the amount of data maintenance, reduce the active power network loss, improve the effect of voltage quality

Inactive Publication Date: 2018-05-29
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0002] Due to the strong randomness and volatility of the output of new energy units, the daily variation of wind power in some areas shows anti-peaking characteristics, and its large-scale grid connection may cause large fluctuations in voltage, affecting the voltage quality of the grid. There is a risk of local voltage instability

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  • Voltage reactive power optimization calculation method based on prime-dual interior point method

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] This calculation method of voltage and reactive power optimization based on the original dual interior point method,

[0022] 1) Read in the power grid model and real-time data;

[0023] 2) Perform network topology analysis;

[0024] 3) Calculate the voltage limit of each monitoring point;

[0025] 4) Calculate the reactive power limit of each gate;

[0026] 5) For the voltage limit point, select the candidate reactive power compensation strategy according to the sensitivity;

[0027] 6) For reactive power over-limit points, select candidate reactive power compensation strategies according to sensitivity;

[0028] 7) Perform strategy optimization according to the optimization model;

[0029] 8) Issue control commands.

[0030] For the AVC system, for the consideration of control stability, there is a certain limit to the adjustment range of the bus voltage...

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Abstract

The invention relates to a voltage reactive power optimization calculation method based on a prime-dual interior point method. The method adopts a prime-dual interior point method voltage reactive power optimization program, so that the problems that a main network AVC control center is large in data maintenance amount, frequent in equipment operation, and low in qualified rate of the voltage quality are solved, and the requirement for real-time operation of the operation time of the model is met.

Description

technical field [0001] The invention relates to a calculation method for optimizing voltage and reactive power based on the original dual interior point method. Background technique [0002] Due to the strong randomness and volatility of the output of new energy units, the daily variation of wind power in some areas shows anti-peaking characteristics, and its large-scale grid connection may cause large fluctuations in voltage, affecting the voltage quality of the grid. There is a risk of local voltage instability. Therefore, in view of the reactive voltage problem caused by large-scale and highly concentrated new energy grid integration, in order to ensure the safety of the grid after large-scale new energy grid integration, it is necessary to build a grid-friendly new energy station and a new energy-friendly power grid. On the one hand, it can reduce the workload of professionals in data maintenance and control, on the other hand, it can improve the voltage qualification r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16
CPCH02J3/16Y02E40/30
Inventor 胡晓飞汤伟杨铖
Owner STATE GRID CORP OF CHINA
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