A Trapezoidal Variable Weight Regression Control Method for Magnetically Controlled Shunt Reactor

A technology of regression control and trapezoidal variable weight, which is applied in the direction of conversion equipment, electrical components, circuit devices, etc. that can be converted to DC without intermediate conversion, and can solve the problems that cannot meet the requirements of real-time adjustment speed and accuracy.

Active Publication Date: 2014-10-01
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
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Problems solved by technology

However, the power system changes rapidly in real time, and manual regulation or control with fixed weights cannot meet the speed and accuracy requirements of real-time regulation.

Method used

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  • A Trapezoidal Variable Weight Regression Control Method for Magnetically Controlled Shunt Reactor
  • A Trapezoidal Variable Weight Regression Control Method for Magnetically Controlled Shunt Reactor
  • A Trapezoidal Variable Weight Regression Control Method for Magnetically Controlled Shunt Reactor

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Embodiment Construction

[0021] The power system is a complex time-varying nonlinear system. The operating point of the system is constantly changing. It is difficult to pre-construct a nonlinear feedback control law with fixed parameters to ensure the stability of the entire system in real time. Therefore, some adaptive methods should be used To estimate unknown parameters and correct them. The magnetic control shunt reactor control system of the present invention adopts the trend extrapolation method to U, I d The extension model of the nonlinear time-varying parameter logarithmic regression equation is established, and the working conditions of the complex power system are tracked and approximated in real time according to the design idea of ​​dynamic system identification. When the operating state point of the whole network system changes, the parameters can be changed quickly to simulate the current state point, which is flexible and fast.

[0022] The terminal voltage U of the magnetic control ...

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Abstract

The invention discloses a trapezoidal variable weight regression control method for a magnetically controlled shunt reactor. Under the complex conditions of system cascading failures and violent voltage fluctuations, all parameter weights of a scroll time domain window can be changed rapidly in a balancing way, so tracking flexibility and control robustness can be dynamically regulated. In the method, a trend extrapolation method is adopted to establish a weight extension model of a time variant parameter logarithm regression equation for the nonlinear component part of the magnetically controlled shunt reactor and the dynamic influence of an external system; and a tracking feedback accuracy dynamic variable weight control policy is put forward to track the running state variations of the external system and adaptively change the parameter weights of the scroll time domain window so as to accurately reflect the importance of the parameter weights in system identification, rationally set the system tracking flexibility and robustness and realize the all-time domain optimization of voltage stability regulation and control.

Description

technical field [0001] The invention relates to a dynamic controller design method, which can be applied to the dynamic control of nonlinear elements, especially the real-time dynamic control of a magnetically controlled shunt reactor. Background technique [0002] The huge capacitive charging power of EHV / UHV AC transmission lines, drastic power flow changes and limited insulation margins pose a huge challenge to the reactive power regulation and overvoltage suppression of the system. The traditional reactive power compensation device connected to the low-voltage winding side of the transformer is cut off at the same time, and dynamic compensation cannot be realized. The high-voltage magnetically controlled shunt reactor (MCSR) can simplify the system reactive voltage control in the EHV / UHV grid, suppress the power frequency overvoltage, dynamically compensate the charging power of the line, etc., and has a very broad application prospect. [0003] The magnetic control shu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P13/00H02J3/00
Inventor 郑伟杰
Owner CHINA ELECTRIC POWER RES INST
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