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A demand side interconnection reliability evaluation method and system

A reliability and demand-side technology, applied in the field of resource interconnection reliability evaluation on the demand side, can solve the problems of untargeted reliability indicators, uncertainty and uncontrollability, etc.

Pending Publication Date: 2019-01-04
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

However, since demand-side interconnection involves a variety of demand-side resources and equipment, its uncertainty and uncontrollability are strong, and the existing reliability indicators are not targeted

Method used

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  • A demand side interconnection reliability evaluation method and system
  • A demand side interconnection reliability evaluation method and system
  • A demand side interconnection reliability evaluation method and system

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Embodiment Construction

[0084] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0085] The current power system reliability assessment techniques mainly include analytical method and Monte Carlo method. Among them, the analytical method has clear mathematical logic, high model accuracy, and fast calculation speed for small systems. However, with the increase of system scale, the calculation amount will increase exponentially, and there may be difficulties for some reliability indicators. It is suitable for power systems with small scale and simple structure. Monte Carlo methods can be divided into three categories according to different principles: state sampling technology (non-sequential Monte Carlo simulation), state transition sampling technology, and state duration sampling technology (sequential Monte Carlo simulation). Under certain accuracy requirements, the sampling frequency of the Monte Carlo method has nothing to do with the...

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Abstract

The invention relates to a demand side interconnection reliability evaluation method and system, comprising the steps of calculating system power flow based on a system state obtained by sampling; judging whether the system power flow obtained by calculation satisfies the constraint conditions; if yes, returning to the last step to continue to calculate the system power flow until the sampling times reach the preset sampling times; if not, performing load shedding processing on the demand side, and taking minimum load shedding amount as the objective to calculate the system power flow. Based on the calculation result of the system power flow, the power system reliability evaluation index under the demand side interconnection is calculated, and the power system reliability under the demandside interconnection is evaluated based on the reliability evaluation index. Through the abovementioned scheme, the accurate reliability evaluation of demand side interconnection effect can be achieved.

Description

technical field [0001] The present invention relates to the technical field of reliability evaluation of resource interconnection on the demand side, and in particular to a reliability evaluation method and system for resource interconnection on the demand side. Background technique [0002] With the rapid development of social economy and technological progress, user-side controllable resources such as demand-side distributed power supply, electric vehicles, distributed energy storage, air conditioners and electric heating boilers have grown rapidly, greatly enriching the types of user-side demand response controllable resources and capacity. At present, the interconnection strategies of demand-side resources are more diverse, so the verification of typical demand-side resource interconnection strategies under multi-constraint conditions is a difficult problem that needs to be solved urgently. Among them, the reliability evaluation of demand-side interconnection effects is ...

Claims

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 陈宋宋李德智闫华光杨斌阮文骏何胜马琎玠龚桃荣董明宇石坤
Owner CHINA ELECTRIC POWER RES INST
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