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Power distribution network interaction control method and system

A power grid system and distribution network technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the problems affecting the safe and stable operation of the power grid, the output stability and controllability of distributed power sources, and the flexibility of flexible loads difficult to predict

Active Publication Date: 2018-12-07
STATE GRID ANHUI ELECTRIC POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of technology, the structure of the distribution network has changed, and distributed power sources and a large number of new flexible loads are connected to the distribution network, which makes distributed power sources and flexible loads pose new challenges to the operation and control of the distribution network.
The main performance is that the output stability and controllability of distributed power sources are relatively poor, and the flexibility and variability of flexible loads are relatively difficult to predict. If they are not properly controlled, it will affect the safe and stable operation of the power grid.

Method used

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  • Power distribution network interaction control method and system
  • Power distribution network interaction control method and system
  • Power distribution network interaction control method and system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment provides a distribution network interactive control method, such as figure 1 shown, including the following steps:

[0026] S1: Decoupling the entire grid system into multiple electrical islands.

[0027] The decoupling of multiple electrical islands is to first determine the physical topology of "source-network-load" according to the physical connection relationship between the distributed power supply, distribution network and load equipment, and then determine the equipment according to the real-time operating status of the switch equipment. The electrical connection relationship between them forms a "source-network-load" electrical topology, that is, multiple electrical islands are obtained for independent analysis.

[0028] S2: Analyze the interaction characteristics of each electrical island.

[0029] The interactive characteristic analysis is the premise of the evaluation of the interactive ability. The interactive characteristic analysis method...

Embodiment 2

[0053] This embodiment provides a distribution network interactive control system, such as image 3 As shown, it includes: a dynamic hierarchical partition topology coloring module 10 , an interaction characteristic analysis module 20 , an interaction ability evaluation module 30 , and a security protection control module 40 .

[0054] Dynamic hierarchical partition topology coloring module 10, used to decouple the entire power grid system into multiple electrical islands;

[0055] An interaction characteristic analysis module 20, configured to perform an interaction characteristic analysis on each of the electrical islands;

[0056] An interactive capability evaluation module 30, configured to evaluate the interactive capability based on the analysis results of the interactive characteristics;

[0057] The security protection control module 40 is configured to determine a security protection control strategy based on the interaction capability evaluation result.

[0058] Fu...

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Abstract

The invention discloses a power distribution network interaction control method and system. The method comprises the following steps: decoupling a whole power grid system into multiple electrical islands; carrying out interaction characteristic analysis for each electrical island; evaluating interaction capability based on the interaction characteristic analysis result; and determining a securityprotection control strategy based on the interaction capability evaluation result. The method and system adopts a distributed parallel simulation mechanism suitable for multi-step simulation to analyze changes of each safety index of a power distribution network, and ensures safe operation of the power grid system based on the day-ahead, hour-ahead and real-time multi-time scale coordinated security protection control strategy through rolling deviation adjustment.

Description

technical field [0001] The invention relates to the technical field of power grid control, in particular to an interactive control method and system for a distribution network. Background technique [0002] With the development of technology, the structure of the distribution network has changed, and distributed power sources and a large number of new flexible loads are connected to the distribution network, which makes distributed power sources and flexible loads pose new challenges to the operation control of the distribution network. The main performance is that the output stability and controllability of distributed power sources are relatively poor, and the flexibility and variability of flexible loads are relatively difficult to predict. If they are not properly controlled, the safe and stable operation of the power grid will be affected. [0003] Effective analysis and utilization of distributed power sources and the characteristics of a large number of new flexible l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 肖安南于海波张超边海峰
Owner STATE GRID ANHUI ELECTRIC POWER CO LTD