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Monte Carlo-based demand side interconnection effect reliability assessment method

A demand-side and reliability technology, applied in the field of demand-side resource interconnection reliability assessment, can solve problems such as increased uncertainty and uncontrollability, and untargeted reliability indicators, achieve accurate results, and improve computing speed and efficiency. , the effect of saving simulation time

Inactive Publication Date: 2019-08-06
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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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 enhanced, and the existing reliability indicators are not targeted

Method used

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  • Monte Carlo-based demand side interconnection effect reliability assessment method
  • Monte Carlo-based demand side interconnection effect reliability assessment method
  • Monte Carlo-based demand side interconnection effect reliability assessment method

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Experimental program
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Embodiment Construction

[0044] The present invention will be further described below.

[0045] Step 1: Set the number of samples, use the non-sequential Monte Carlo method to randomly sample the operating status of each component, each line status, and the output status of demand-side resources, and then obtain the random status of the intranet system.

[0046] The random state of the system is obtained by combining the random states of all components, lines, and outputs according to the following formula:

[0047] Use the uniform distribution in [0,1] to simulate the normal and fault states of the components, and each component is independent of each other, let s i represents the state of element i, λ i represents its failure rate, then generate a random number R uniformly distributed between [0,1] for element i i , then there are:

[0048]

[0049] Among them, s i =0 means working state, s i =1 indicates a fault state.

[0050] The state of an N-element system can be represented by a vecto...

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Abstract

The invention relates to a Monte Carlo method-based demand side resource interconnection reliability assessment system and method, sampling is carried out by using a non-sequential Monte Carlo method,and indexes closely related to demand side interconnection are selected to assess the reliability of a power system under demand side resource interconnection. The method comprises the following specific steps: sampling the output of demand side resources, the state of an element and the state of a line in a system; calculating system power flow meeting constraint conditions by using a Newton-Raphson method;; analyzing whether the constraint condition is met or not; and finally calculating each reliability index of the system, and comprehensively evaluating the reliability of the system. According to the method, the reliability of the power system under demand side resource interconnection can be evaluated quickly and accurately, the reliability evaluation method of the power system is improved in a targeted manner, and a basis is provided for risk control and state maintenance of the power system under demand side interconnection under different degrees of influence.

Description

technical field [0001] The invention relates to the technical field of reliability evaluation of resource interconnection on the demand side, and in particular to a system and method for evaluating the reliability of resource interconnection on the demand side based on a Monte Carlo method. 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-sid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F17/50
CPCG06Q10/0635G06Q10/06315G06Q10/06393G06Q50/06G06F30/367
Inventor 周行洁刘向军孙毅
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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