Scattered type power quality regulation system

A decentralized technology for power quality adjustment, applied in the direction of AC network voltage adjustment, electrical components, circuit devices, etc., can solve the problems of limited actual benefits and high investment costs, and achieve the goal of reducing power costs, reducing system capacity, and improving power quality Effect

Inactive Publication Date: 2016-06-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

From the perspective of facility flexibility, the traditional UPQC installation position in the distribution network is relatively fixed, and the actual benefits obtained by capacity optimization and configuration optim

Method used

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  • Scattered type power quality regulation system
  • Scattered type power quality regulation system
  • Scattered type power quality regulation system

Examples

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Example Embodiment

[0049] Example 1

[0050] The distributed power quality regulator of the present invention is composed of a series type compensation device and a parallel type compensation device. The series compensation device is installed at the front end of the sensitive load or the common coupling point that is sensitive to voltage, and then provides higher voltage quality for all the feeders behind the sensitive load or the common coupling point. The parallel compensation device is installed near the end of the feeder line before the impact and non-linear sensitive load or the common coupling point, so that a good current waveform can be maintained before the load or the common coupling point PCC without affecting other sensitive loads. Each series-type compensation device and each parallel-type compensation device contains at least one central controller. In addition to realizing its own local operation control, the central controller also contains a communication unit, a central controlle...

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Abstract

The invention discloses a scattered type power quality regulation system. The scattered type power quality regulation system comprises one or more series-wound type compensation apparatus and shunt-wound type compensation apparatus, wherein each of the series-wound type compensation apparatuses and shunt-wound type compensation apparatuses comprises a central control unit; and direct current buses are not shared between the series-wound type compensation apparatuses and shunt-wound type compensation apparatuses. When the multiple series-wound type compensation apparatuses and shunt-wound type compensation apparatuses are jointly used, a management center is provided, wherein the management center judges power grid fault types by sampling power grid voltages and load current information so as to realize coordinated operation of the respective series-wound type compensation apparatuses and the shunt-wound type compensation apparatuses.

Description

technical field [0001] The invention relates to the field of power quality regulation, and more specifically, to a distributed power quality regulation system. Background technique [0002] With the continuous increase of nonlinear loads and impact loads in the power system, especially the wide application of power electronic conversion devices, the harmonic distortion of the power grid is becoming more and more serious. At the same time, there are often three-phase unbalanced and harmonic interference phenomena in the grid voltage. On the other hand, with the popularity of various complex and sophisticated devices (such as computers) that require high power quality, people put forward higher and higher requirements for power quality, and power quality devices and control technologies have become current hot spots question. [0003] Such as figure 1 As shown, the traditional Unified Power Quality Conditioner (Unified Power Quality Conditioner, UPQC), as a flexible power d...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/01H02J3/12H02J3/18H02J3/26H02J9/02
CPCH02J3/00H02J3/01H02J3/12H02J3/1807H02J3/1821H02J3/1871H02J3/26H02J9/02Y02E40/30Y02E40/40Y02E40/50
Inventor 黎德良张淼袁梓锋苏协飞
Owner GUANGDONG UNIV OF TECH
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