Electric energy quality comprehensive optimization control system and method for low-voltage power distribution network

A low-voltage distribution network and power quality technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as increased loss of low-voltage distribution lines, large system losses, and restriction of transformer output, to ensure governance effects. Effect

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A low-voltage distribution network and power quality technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve problems such as increased loss of low-voltage distribution lines, large system losses, and restriction of transformer output, to ensure governance effects. Effect

CN110601218APending Publication Date: 2019-12-20GUIZHOU POWER GRID CO LTD

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[0021] A low-voltage distribution network power quality comprehensive optimization control system and control method, which includes an active meter box-based power quality management functional unit and a system optimization controller; the active meter box-based power quality management functional unit is based on high-power electronic technology Portable module with small density (243mm×167mm×88mm), with functions of harmonic control, reactive power compensation, and three-phase unbalance adjustment. Compensation capability, 7A negative sequence compensation capability).

[0022] System optimization controller: it is the core controller of the whole system, which coordinates and controls the coordinated control operation of each active meter-boxed power quality management functional unit. The system optimization controller includes: sampling unit, computing unit, communication unit, and control unit; the sampling unit collects the real-time data of the three-phase current a...

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Abstract

The invention discloses an electric energy quality comprehensive optimization control system and method for the low-voltage power distribution network. The control system comprises a system optimization controller connected with active meter box-type electric energy quality treatment function units through wireless communication, the number of the active meter box-type electric energy quality control function units is more than one, and the active meter box-type electric energy quality control function units are respectively installed on branch nodes of a low-voltage distribution line. The control system is advantaged in that an optimal working mode can be automatically selected by the system, and the target requirement of minimum system loss is met as much as possible while the treatmenteffect is ensured.

Description

technical field [0001] The invention belongs to low-voltage distribution network power quality control technology, in particular to a low-voltage distribution network power quality comprehensive optimization control system and control method. Background technique [0002] In the low-voltage distribution network, especially in the low-voltage distribution network system of the rural power grid, most of the power loads are single-phase loads, and the types of power load characteristics of the low-voltage distribution network have increased, and some new power consumption characteristics have emerged. Influenced by factors such as power consumption problems and the difference in power consumption time of each load in the low-voltage grid, the three-phase imbalance problem exists objectively and in real time. In some low-voltage distribution station areas, the three-phase imbalance problem seriously restricts the transformer output and power supply quality, causing low-voltage T...

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Application Information

Patent Timeline

20 Dec 2019

Publication

CN110601218A

IPC: H02J3/18; H02J3/01

CPC: H02J3/1842; H02J3/01; Y02E40/30; Y02E40/40

Inventors: 王冕; 谢百明