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Method for evaluating distributed photovoltaic receiving capability of power distribution network

A distributed photovoltaic and receiving capacity technology, applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of high dimensionality, many variables, dimensionality disaster, etc.

Active Publication Date: 2016-01-27
STATE GRID ENERGY RES INST +1
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Problems solved by technology

The multi-objective decision-making optimization problem is a nonlinear NP-hard problem with many variables and high dimensionality. It is easy to cause the disaster of dimensionality by using traditional mathematical methods. Therefore, the problem is usually simplified before optimization, but the results obtained based on this will also be There is a certain gap with the actual

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  • Method for evaluating distributed photovoltaic receiving capability of power distribution network
  • Method for evaluating distributed photovoltaic receiving capability of power distribution network
  • Method for evaluating distributed photovoltaic receiving capability of power distribution network

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Embodiment Construction

[0082] The method for evaluating the ability of a distribution network to accommodate distributed photovoltaics provided by the present invention will be described in detail below with reference to the drawings and specific embodiments.

[0083] Such as figure 1 As shown, the method for evaluating the ability of a distribution network to accommodate distributed photovoltaics provided by the present invention includes the following steps executed in sequence:

[0084] Step 1) Analyze the factors that limit the distributed photovoltaic acceptance capacity of the target grid: by analyzing the impact of changes in node voltage, line current and other factors caused by photovoltaic grid connection on the photovoltaic acceptance capacity of the target grid, theoretically find out the photovoltaic acceptance The limit position of the capacity; take the voltage and line current of each node in the target grid as the main limiting conditions, and solve the maximum PV connection capacity wit...

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Abstract

The invention discloses a method for evaluating a distributed photovoltaic receiving capability of a power distribution network. The method comprises the following steps: analyzing factors restricting the distributed photovoltaic receiving capability; constructing a distributed photovoltaic receiving capability analysis optimization model; carrying out sequential verification for a specific photovoltaic configuration scheme; selecting an optimization algorithm suitable for photovoltaic receiving capability analysis; analyzing a photovoltaic integrated receiving capability; and the like. According to the method, from the perspective of influences exerted by distributed solar power on the operation mechanism and the analysis model of the distributed power network, key factors affecting the photovoltaic receiving capability of the power network are presented, the photovoltaic receiving capability optimization model is established under a sequential analysis framework, an optimization algorithm applied to solving the problem of the photovoltaic receiving capability is brought forward, the effectiveness of the algorithm is verified through an IEEE standard example, correlation principles and suggestions about reasonable access of the distributed solar power are put forward, and a good theoretical foundation good scientific guidance are provided for receiving and planning of distributed power sources and planning construction work of load response measures at a demand side.

Description

Technical field [0001] The invention belongs to the technical field of distribution network planning, and in particular relates to a method for evaluating the ability of a distribution network to accept distributed photovoltaics. Background technique [0002] At present, because the analysis and calculation of the distributed photovoltaic receiving capacity of the distribution network involves many aspects, and the analysis and calculation are also very complicated, so far there is no unified method for calculating the photovoltaic receiving capacity. However, considering from different perspectives, there are roughly the following two algorithms: [0003] (1) Time domain simulation method [0004] The basic idea of ​​the time domain simulation method is: for a certain power grid, assuming a distributed photovoltaic access capacity value, select several typical operation modes and typical network faults and disturbances, and see whether the entire system is Meet the stability requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02E60/00
Inventor 孙强王雪罗凤章殷强倪颖婷李静王林钰许方园
Owner STATE GRID ENERGY RES INST
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