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Method for calculating distributed photovoltaic grid connected maximum penetration level

A technology of distributed photovoltaic and admission capacity, which is applied in the field of calculating the maximum admission capacity of distributed photovoltaic grid-connected, to achieve the effect of accurate model description, good convergence and robustness, and effective solution method

Inactive Publication Date: 2017-05-17
QINHUANGDAO POWER SUPPLY COMPANY OF STATE GRID JIBEI ELECTRIC POWER COMPANY +2
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  • Application Information

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Problems solved by technology

Considering the randomness and fluctuation characteristics of photovoltaic output and load electricity consumption, the current analytical method and dynamic simulation method have certain limitations

Method used

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  • Method for calculating distributed photovoltaic grid connected maximum penetration level
  • Method for calculating distributed photovoltaic grid connected maximum penetration level
  • Method for calculating distributed photovoltaic grid connected maximum penetration level

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0034] The invention discloses a method for calculating the maximum admittance capacity of distributed photovoltaic grid-connected, which includes:

[0035] S1, obtain the basic data of the power distribution system, wherein the basic data includes grid structure, load level and electrical parameters, for example, obtain the basic data of 33 nodes;

[0036] S2, establish a probability distribution model with photovoltaic output and load power consumption as random variables;

[0037] S3, using the basic data to build a chance-constrained programming model for the maximum access capacity of distributed photovoltaic grid-connected, the chance-constrained programming model includes objective functions and constraints;

[0038] S4. Sampling the probability distribution model to generate s...

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Abstract

The invention provides a method for calculating distributed photovoltaic grid connected maximum penetration level. The method comprises the following steps: S1, acquiring basic data of a power distribution system; S2, establishing a probabilistically distributed model by using photovoltaic output and load power consumption as random variables; S3, establishing a chance-constrained programming model of the distributed photovoltaic grid connected maximum penetration level by using the basic data, wherein the chance-constrained programming model comprises an objective function and a constraint condition; S4, sampling the probabilistically distributed model by a random simulation technology to generate sample data, and checking whether the sample data meet the constraint condition, if the sample data meet the constraint condition, carrying out the step S6, and if the sample data do not meet the constraint condition, carrying out the step S5; S5, numbering a penalty function into the objective function; and S6, carrying out global optimization on chance-constrained programming model by a genetic algorithm. By the method for calculating the distributed photovoltaic grid connected maximum penetration level, the distributed photovoltaic grid connected maximum penetration level can be calculated accurately for randomness and fluctuation of photovoltaic output and load power consumption.

Description

technical field [0001] The invention relates to the technical field of power distribution system planning, in particular to a method for calculating the maximum admittance capacity of distributed photovoltaic grid-connected. Background technique [0002] With the increasing pressure of energy crisis and environmental protection, the utilization of renewable energy has been paid more and more attention. Among them, solar power generation technology is the fastest-growing renewable energy technology in the world in recent years, and distributed photovoltaic grid-connected power generation has become one of the main ways to use solar energy. Large-scale distributed photovoltaic grid-connection has the characteristics of large capacity, dynamics and randomness, which brings challenges to the safe and reliable operation of the power grid. Whether in the planning and design stage of photovoltaic power plants or in the actual operation of the power system, the determination of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06G06N3/12
CPCG06N3/126G06Q10/04G06Q50/06
Inventor 谢小英赵美超邢劲高云辉牛益国宋莹贾清泉张孟琛王珺宣文华
Owner QINHUANGDAO POWER SUPPLY COMPANY OF STATE GRID JIBEI ELECTRIC POWER COMPANY
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