A Three-state Space Power Supply Reliability Evaluation Method for One Supply and One Standby Distribution Network

Abstract

The embodiment of the invention discloses a power supply reliability assessment method of a one-supply-one-backup power distribution network in a three-state space in order to solve the technical problems that a traditional reliability assessment method of an existing electrical power system takes the influences of the failure rate, the maintenance rate, the conversion rate of an element or a backup element or a system and the influence of the change in power system operating modes into little consideration at the same time, and the compatibility, the practicability and the applicability of a calculation method are difficult to meet. The method comprises the steps that the influences of the failure rates, the maintenance rates and the backup model conversion rates and the like of a distribution line and a load bus on the one-supply-one-backup power distribution network with a power supply system of a working system and a power supply system of a backup system of both single-bus configuration are considered, a power supply reliability assessment model of the one-supply-one-backup power distribution network based on the three-state space is built, and the power supply reliability of the one-supply-one-backup power distribution network including the influences of the failure rates and the maintenance rates of all power supplies, lines and load buses in the working system and the backup system is calculted.

Description

technical field [0001] The invention relates to the technical field of power systems and automation thereof, in particular to a three-state space power supply reliability evaluation method for a supply network and a standby distribution network. Background technique [0002] Reliability assessment has always been the main and important work content of power system, and it is a routine task of power system planning and design. In the modern distribution network, the power supply capacity is increasing, the complexity is increasing, the demand is gradually increasing, and the requirements for power supply reliability are also increasing. At the same time, with the increasing scale of distribution network capacity and increasingly complex structural characteristics, different users have different levels of reliability requirements, so there will always be great differences in the power supply networks of different users. Distribution networks with different structures have dif...

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Problems solved by technology

[0006] The embodiment of the present invention provides a three-state space power supply reliability evaluation method for one supply and one standby distribution network, which solves the problem that the traditional reliability evaluation methods of power systems rarely consider the failure rate, maintenance rate, and conversion rate of components or systems at the same time And the influence of changes in the operation mode of the power grid, less consideration of the backup components or system failure rate, maintenance rate, operation rate and the impact of changes in the operation mode of the power grid, and the technical problems that the applicability, practicability and applicability of the calculation method are difficult to satisfy

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