Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Power distribution network reliability index calculation method based on mixed integer linear programming

A linear programming, mixed integer technology, applied in computing, complex mathematical operations, electrical components, etc., can solve problems such as underestimation of reliability indicators, inability to consider load recovery operations, and time-consuming

Active Publication Date: 2019-09-06
TSINGHUA UNIV
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method takes a long time and requires a large storage space; and it cannot consider the load recovery operation after the failure, which may lead to the underestimation of the reliability index

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
  • Power distribution network reliability index calculation method based on mixed integer linear programming
  • Power distribution network reliability index calculation method based on mixed integer linear programming
  • Power distribution network reliability index calculation method based on mixed integer linear programming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0069] A distribution network reliability index calculation method based on mixed integer linear programming proposed by the present invention will be further described in detail below in conjunction with specific embodiments.

[0070] A kind of distribution network reliability index calculation method based on mixed integer linear programming proposed by the present invention comprises the following steps:

[0071] 1) Define the device installation state and the fault isolation, load transfer and fault recovery action principles after branch faults, as follows:

[0072] After a branch fault occurs, the circuit breaker on the upstream side of the branch closest to the faulty branch first acts to open and break the fault current (circuit breaker action stage), and at this time the downstream node of the circuit breaker is powered off; after that, the switch action (switching action stage), perform fault isolation and isolate the faulty branch; at the same time, carry out networ...

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 provides a power distribution network reliability index calculation method based on mixed integer linear programming, and belongs to the technical field of power system planning and evaluation. The method comprises the steps of firstly defining a device installation state and a fault isolation, load transfer and fault recovery action principle after a branch fault, then constructinga power distribution network reliability index optimization model based on a mixed integer linear programming model, and directly obtaining the value of a reliability index by solving the model. According to the method, two common faults in the power distribution network, namely a transformer fault and a line fault, are considered, and the influence of network reconstruction on a reliability indexafter the fault is considered. According to the method, a large amount of sampling calculation in traditional power distribution network reliability evaluation is avoided, the recovery of part of loads affected by faults by network reconstruction after the faults can be considered, and the calculation efficiency is high and accurate.

Description

technical field [0001] The invention belongs to the technical field of power system planning and evaluation, and in particular relates to a method for calculating reliability indexes of distribution networks based on mixed integer linear programming. Background technique [0002] In the field of power, reliability refers to the ability of the power system to continuously meet the quantity and quality of power demand of end users. Distribution network reliability mainly includes the following indicators: customer interruption frequency (CIF) , customer interruption duration (CID) , system average interruption frequency index (SAIFI) )), system average interruption duration index (SAIDI) and expected energy not supplied (EENS)). According to the current national standard "DL / T 1563-2016 Guidelines for Reliability Assessment of Medium-Voltage Distribution Networks", the above reliability indicators are necessary indicators for evaluating the reliability of distribution network...

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
IPC IPC(8): G06F17/50G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06G06F30/20H02J2203/20H02J3/0012H02J2203/10Y02E60/00Y04S40/20H02J3/001G05B17/02G06F17/12
Inventor 吴文传张伯明栗子豪孙宏斌王彬郭庆来
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products