Unlock instant, AI-driven research and patent intelligence for your innovation.

A Decision Table-Based On-Line Partitioning Method for Distribution Network Planning Islands

A technology of island division and distribution network, applied in the direction of power network operating system integration, AC network with the same frequency from different sources, electrical components, etc., can solve problems that need to be studied and achieve efficient generation

Active Publication Date: 2022-04-01
WUHAN UNIV +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But how to come up with an effective partitioning strategy remains to be studied

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Decision Table-Based On-Line Partitioning Method for Distribution Network Planning Islands
  • A Decision Table-Based On-Line Partitioning Method for Distribution Network Planning Islands
  • A Decision Table-Based On-Line Partitioning Method for Distribution Network Planning Islands

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

[0062] 1. Online island division framework

[0063] Online island partitioning includes partition model and decision table. Before the blackout occurs, the distribution network operator uses a large number of measurement devices to obtain real-time measurement information and solve the partition optimization model to obtain the optimal partition results that satisfy various constraints. Then, a corresponding decision table is formed according to the division result, load power and load priority. When a blackout occurs, calculate the current power P of the Point of Common Coupling (PCC) PCC,now and optimal moment power P PCC,opt The difference ΔP PCC . Using a decision table according to ΔP PCC The size is corrected online for the division result. For example, when ΔP PCC When >0, it means that ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention proposes an online division method for distribution network planning islands based on a decision table. The online island division method includes two processes: offline optimization of partition model and online correction of decision table. Before the blackout occurs, the partition optimization model is regularly executed offline to obtain the optimal partition plan; when the blackout occurs, the decision table is used to correct the partition plan online according to the system status, so that the load and power supply can be matched in real time. In order to speed up the solution, on the one hand, the linearized power flow equation and the big M algorithm are used to simplify the partition model into a mixed integer linear problem; on the other hand, a heuristic algorithm is used to generate a decision table. The proposed online island division method can realize the smooth transition of the system to the island mode without power failure at the moment of failure, which effectively improves the power supply reliability and resilience of the system.

Description

technical field [0001] The invention belongs to the technical field of multi-time scale coordinated control of distribution networks, and in particular relates to an online division method of distribution network planning islands based on a decision table. Background technique [0002] Providing uninterrupted and continuous power supply is the persistent goal of operators, but frequent extreme weather has caused a large number of power outages. For example, Hurricane Sandy in 2012 caused nearly 8 million residents in the United States without power supply; The strong typhoon caused a power outage for nearly 50 hours. Power outages have caused huge economic losses and serious social impacts. When a fault occurs, the existing recovery method is to transfer the load on the faulty feeder to the adjacent normal feeder by means of network reconstruction. However, when extreme weather causes the upper-level main grid to fail, the entire power distribution area will lose power, an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/06H02J3/46H02J3/14H02J3/24
CPCH02J3/381H02J3/06H02J3/46H02J3/14H02J3/24Y04S20/222Y02B70/3225
Inventor 徐箭谢博宇廖思阳袁智勇于力徐全林跃欢
Owner WUHAN UNIV