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Control method for micro-grid SVG (Static Var Generator) multi-target configuration

A technology of multi-objective configuration and control method, which is applied in the control field of micro-grid SVG multi-objective configuration, and can solve the problems of inapplicable PID control method, insufficient utilization of SVG capacity, and infeasible mathematical models, etc.

Active Publication Date: 2012-07-04
YUN NAN ELECTRIC TEST & RES INST GRP CO LTD ELECTRIC INST +1
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Problems solved by technology

In the process of SVG capacity allocation, there is mutual influence among these variables, which makes it impossible to establish an accurate mathematical model, and also makes the traditional PID control method unsuitable
At present, the application of SVG is mainly to compensate reactive power or only to control harmonics. The capacity of SVG has not been fully utilized, and there is a great waste of resources.

Method used

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  • Control method for micro-grid SVG (Static Var Generator) multi-target configuration
  • Control method for micro-grid SVG (Static Var Generator) multi-target configuration
  • Control method for micro-grid SVG (Static Var Generator) multi-target configuration

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Embodiment Construction

[0034] A control method for microgrid SVG multi-target configuration. The present invention includes two parts: target configuration rules and error correction controllers, in which:

[0035] The target configuration rules are based on current real-time task targets such as voltage support, reactive power compensation, harmonic control, and combinations of the above, and real-time sampling data such as common point voltage, power factor, harmonics, and SVG DC side voltage deviation, without exceeding the SVG safety capacity Under the premise of constraints, calculate the SVG compensation current command signal; the error correction controller includes a two-position control structure and a generalized proportional-integral control structure to jointly complete the task of converting the SVG compensation current command signal into the control pulse signal of the SVG power device, and The closed-loop control ensures that the compensation current actually output by the SVG tracks it...

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Abstract

The invention discloses a control method for micro-grid SVG (Static Var Generator) multi-target configuration. The invention relates to a target configuration rule and an error correction controller. The control method has the beneficial effects that: a generalized proportional-integral control structure is matched with a two-position control structure, so that the aim of tracking periodic signals of different frequencies comprising fundamental waves and main characteristic harmonic waves with no error is fulfilled, the tracking control accuracy is increased, and accurate tracking of the practical output current of an SVG to command current is realized.

Description

Technical field [0001] The invention relates to a control method for microgrid SVG multi-target configuration, in particular to a microgrid multi-target SVG generalized proportional integral error correction control method based on target configuration. SVG refers to a self-commutated power semiconductor bridge type variable Static var generator composed of current generator. Background technique [0002] With the widespread application of SVG in the power grid, SVG has good effects on voltage support, reactive power compensation, harmonic control, etc. However, how to use suitable control methods to make full use of the SVG capacity has attracted more and more attention. The control variables of SVG multi-objective control mainly include voltage, current, power factor, voltage distortion rate, current distortion rate and so on. In the process of SVG capacity configuration, these variables have mutual influences, which makes it impossible to establish an accurate mathematical mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/01
CPCY02E40/12Y02E40/10Y02E40/40
Inventor 魏承志涂春鸣陈晶帅智康覃日升李胜男盘宏斌刘明群刘柱揆
Owner YUN NAN ELECTRIC TEST & RES INST GRP CO LTD ELECTRIC INST
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