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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 insufficient utilization of SVG capacity, waste of resources, and inapplicable PID control methods, etc.

Active Publication Date: 2015-05-06
YUN NAN ELECTRIC TEST & RES INST GRP CO LTD ELECTRIC INST +1
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  • Application Information

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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.

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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 micro-grid SVG multi-target configuration. The invention includes two parts: target configuration rules and error correction controllers, wherein:

[0035] The target configuration rule is based on the current real-time task targets such as voltage support, reactive power compensation, harmonic control and the combination 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 double-bit control structure and a generalized proportional integral control structure, and jointly complete the task of converting the SVG compensation current command signal into the control pulse signal of the SVG power device, and The compensation current actually output by the SVG is guaranteed to track its command signal throug...

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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 present invention relates to a micro-grid SVG multi-target configuration control method, in particular to a micro-grid multi-target SVG generalized proportional integral error correction control method based on target configuration. SVG refers to a self-commutated power semiconductor bridge transformer A static var generator composed of flow converters. Background technique [0002] With the widespread application of SVG in power grids, SVG has good effects on voltage support, reactive power compensation, and harmonic control. However, how to use appropriate control methods to fully utilize 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 allocation, there is mutual influence among these variables, which makes it impossible to establish an accurate mathemat...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/18H02J3/01
CPCY02E40/10Y02E40/40
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