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Multistage electrical-network self-healing control device and control method thereof

A technology of self-healing control and power grid, applied in circuit devices, adaptive control, emergency protection circuit devices, etc., can solve problems such as manual power restoration, and achieve low-cost effects

Active Publication Date: 2012-09-26
ZHUHAI UNITECH POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many occasions, the communication network does not have the conditions to cover all the switches, and manual power restoration is required on site

Method used

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  • Multistage electrical-network self-healing control device and control method thereof
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  • Multistage electrical-network self-healing control device and control method thereof

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Embodiment Construction

[0059] The invention discloses a multi-level power grid self-healing control device, such as figure 1 , Wherein the multi-level power grid self-healing control device is connected to one or more levels of the multi-level power grid, including:

[0060] Parameter acquisition and monitoring unit: used to sample and convert the power grid, obtain electrical signal parameters from it, and transmit the parameter data to the central processing unit;

[0061] Central processing unit: used to receive the parameter data sent by the parameter collection and monitoring unit, process the parameter data, compare the processing result with the fixed value according to the criterion to determine the control decision, and output the control signal to the control unit;

[0062] Man-machine interface and configuration parameter setting input unit: used to provide local man-machine interface or communication interface, so that operation and maintenance personnel can input settings locally or automatical...

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Abstract

The invention provides a multistage electrical-network self-healing control device and a control method thereof. The invention aims at satisfying the following demands: realizing interactive balance between a power supply and a load; controlling coordination cooperation of various kinds of distributed power supplies, different levels of micro-grids and main networks; automatically identifying networking or island state of the network; maximumly guaranteeing an energy supply. The multistage electrical-network self-healing control device is connected in one stage or multiple stages of the multistage electrical network and comprises a parameter acquisition monitoring unit, a central processing unit, a man-machine interface and configuration parameter setting input unit and a regulation and control unit. A frequency is served as an information carrier used to characterize an electrical network connection state and an area coverage stage so that the load and the power supply in the electrical network can self-identify the network state and automatically switch according to a preset strategy. The frequency is taken as an information link. Through self-adjustment of the power supply and the load in the system, supply and demand matching of the electric power can be realized, and automatic balance and stabilization of the electrical network under the states of the networking and the island can be guaranteed.

Description

Technical field [0001] The invention belongs to the technical field of power grid control, and particularly relates to a multi-level power grid self-healing control device and control method. Background technique [0002] The nominal frequency of my country's power system is 50Hz. GB / T15945-1995 "Power Quality-Allowable Deviation of Power System Frequency" stipulates: the allowable value of the normal frequency deviation of the power system is ±0.2Hz. When the system capacity is small, the deviation value can be relaxed To ±0.5Hz, there is no limit on the size of the system capacity in the standard. In the "National Electricity Supply and Utilization Regulations," it is stipulated that "the allowable deviation of the power supply frequency of the power supply bureau: ±0.2HZ for grid capacity of 3 million kilowatts and above; ±0.5HZ for grid capacity below 3 million kilowatts. In actual operation , From the operation of all major power systems across the country, it is maintained ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/04H02J3/26H02J3/38H02H7/26
CPCG05B13/02H02J3/38Y04S10/12H02J3/00H02J3/381H02J3/26Y02E40/50H02J13/0006Y04S10/525H02H3/46H02J3/14H02J3/04H02H7/26Y02B70/3225Y04S20/222H02J2300/10H02J13/00034H02J13/0004H02J2310/60H02J3/144H02J13/00002Y04S10/30Y02E60/00
Inventor 金述强刘粤海张永强
Owner ZHUHAI UNITECH POWER TECH CO LTD
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