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A Calculation Method of Distribution Network Reliability Index Based on Mixed Integer Linear Programming

A linear programming, mixed integer technology, applied in computing, complex mathematical operations, electrical components, etc., can solve the problems of underestimation of reliability indicators, large storage space, long time consumption, etc.

Active Publication Date: 2020-07-10
TSINGHUA UNIV
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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

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  • A Calculation Method of Distribution Network Reliability Index Based on Mixed Integer Linear Programming
  • A Calculation Method of Distribution Network Reliability Index Based on Mixed Integer Linear Programming
  • A Calculation Method of Distribution Network Reliability Index Based on Mixed Integer Linear Programming

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Embodiment Construction

[0070] 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.

[0071] A kind of distribution network reliability index calculation method based on mixed integer linear programming proposed by the present invention comprises the following steps:

[0072] 1) Define the device installation state and the fault isolation, load transfer and fault recovery action principles after branch faults, as follows:

[0073] 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...

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Abstract

The invention proposes a distribution network reliability index calculation method based on mixed integer linear programming, which belongs to the technical field of power system planning and evaluation. This method firstly defines the device installation state and the fault isolation, load transfer and fault recovery action principles after branch faults, and then constructs a distribution network reliability index optimization model based on a mixed integer linear programming model. By solving the model, the reliability can be obtained directly. value of the index. This method considers two common faults in distribution network: transformer fault and line fault, and considers the influence of network reconfiguration after fault on reliability index. This method avoids a large number of sampling calculations in traditional distribution network reliability assessment, and can consider the recovery of some loads affected by the fault by network reconfiguration after a fault, 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...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06Q10/04G06Q50/06
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
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