Power distribution network electric energy quality flexible detection and analysis system

A power quality and analysis system technology, applied in the field of distribution network detection, can solve the problem of lack of rapid detection and analysis of complex distribution network power quality parameters

Inactive Publication Date: 2019-05-31
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the lack of rapid detection and analysis of complex distribution network power quality parameters in the prior art, the purpose of the present invention is to provide a flexible detection and analysis system for distribution network power quality, so as to realize the analysis of complex distribution network power quality Rapid detection and analysis of parameters

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  • Power distribution network electric energy quality flexible detection and analysis system

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Effect test

Embodiment 1

[0024] Reference figure 1 , A flexible detection and analysis system for power quality of distribution network, including power monitor, power monitor includes power monitor A installed in non-linear power supply, power monitor B installed in AC / DC hybrid distribution network, and installed in load The equipment’s power monitor C, power monitor A, power monitor B, and power monitor C simultaneously collect the power characteristics of the three dimensions of nonlinear power, AC / DC hybrid distribution network and load equipment; by combining complex distribution networks Non-linear development characteristics, from the simultaneous acquisition of non-linear power supply, AC / DC hybrid distribution network and load equipment three-dimensional power characteristics analysis of the power quality characteristics of the non-linear distribution network, of which, through the power monitor A detection analysis from The characteristics of the power quality of the distribution network whe...

Embodiment 2

[0027] Reference figure 1 , A flexible power quality detection and analysis system for power distribution network, which is basically the same as Example 1, except that the nonlinear power supply includes photovoltaic generators and gas turbines. Both photovoltaic generators and gas turbines are connected to the power monitor A; Monitor A detects the electric energy of the non-linear power supply of the complex distribution network of photovoltaic generators and gas turbines.

[0028] The AC / DC hybrid distribution network includes the distribution network with frequent changes in topology, load transfer distribution network, transformer economic operation distribution network and automatic fault handling distribution network, and the distribution network with frequent topology changes, load transfer and distribution network The economic operation of power grids, transformers, and automatic fault handling distribution networks are all connected to the electric energy monitor B, an...

Embodiment 3

[0031] Reference figure 1 , A flexible power quality detection and analysis system for power distribution network, which is basically the same as embodiment 1, except that power monitor A, power monitor B, and power monitor C collect power characteristics while collecting the DC of corresponding equipment. The characteristics of side capacitors and AC side filter capacitors. The decision analysis module receives the characteristics of the DC side capacitors and AC side filter capacitors of the corresponding equipment and at the same time receives the urban power supply cable information for decision-making analysis, and collects the capacitance characteristics of the DC side capacitors and AC side filter capacitors At the same time, it combines the information of the power supply cableization of the urban power grid to make decision-making analysis, so that the characteristics of the power quality of the distribution network can be analyzed from multiple angles, and it is conven...

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Abstract

The invention discloses a power distribution network electric energy quality flexible detection and analysis system and belongs to the power distribution network detection field. The power distribution network electric energy quality flexible detection and analysis system comprises an electric energy monitor. The electric energy monitor comprises an electric energy monitor A installed in a non-linear power supply, an electric energy monitor B installed in an alternating current/direct current hybrid power distribution network, and an electric energy monitor C installed in a load device. The electric energy monitor A, the electric energy monitor B and the electric energy monitor C simultaneously collect electric energy characteristics of three dimensions of the non-linear power supply, thealternating current/direct current hybrid power distribution network and the load device. Based on analysis of a typical complex power distribution network, a rapid detection and analysis method of complex power distribution network electric energy quality parameters is grasped, and the flexible configuration of an electric energy quality management device is realized. Besides, through a verification module, a power grid time domain simulation analysis method is used to detect and calculate each parameter of electric energy quality so as to ensure the rationality of a model.

Description

Technical field [0001] The invention relates to the technical field of power distribution network detection, in particular to a flexible detection and analysis system for power quality of the power distribution network. Background technique [0002] With the rapid development of renewable energy technology and power electronics technology, a large number of new power sources and loads such as distributed photovoltaics and electric vehicle charging piles have been connected to the distribution network. The distribution system has changed from a single power source radial network to a distributed power supply and load. The multi-power supply network not only changes the traditional network structure of the distribution network, but also increases the uncertainty of its power flow. At the same time, the output of distributed power is random and intermittent. These problems have caused the operation and control of the system. With a series of influences, the distribution network has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
CPCY02T90/167Y04S30/12
Inventor 吕文韬吴俊楼伯良陆承宇徐群伟马智泉李培陈峰查蕾胡谆黄弘扬汪冬辉王朝明
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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