Stochastic planning method for transmission network with large-scale photovoltaic power generation

A technology of photovoltaic power generation and stochastic planning, applied in the field of transmission network, can solve problems such as the influence of photovoltaic output uncertainty on power grid planning, and achieve practical and reasonable results with clear logical structure

Active Publication Date: 2018-12-14
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

The uncertainty of photovoltaic output will also affect grid planning

Method used

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  • Stochastic planning method for transmission network with large-scale photovoltaic power generation
  • Stochastic planning method for transmission network with large-scale photovoltaic power generation
  • Stochastic planning method for transmission network with large-scale photovoltaic power generation

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Embodiment Construction

[0027] Such as figure 1 The flow chart of the stochastic planning method for the transmission network with large-scale photovoltaic power generation is shown, which specifically includes the following steps:

[0028] S1 simulates the output curve of large-scale photovoltaic power plants according to real-time light intensity and ambient temperature data;

[0029] S2 Combined with the parameter data of the actual power grid, calculate and determine the upper limit of the capacity of photovoltaic power generation in the power system based on the equivalent power function method;

[0030] S3 According to the stochastic expected value two-level programming theory and the constraints of transmission network planning, establish a random expected value two-level programming model for the transmission network with large-scale photovoltaics;

[0031] S4 According to the characteristics of the model, the hybrid algorithm of the improved genetic algorithm and the primal-dual interior po...

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Abstract

The invention relates to a random planning method for a power distribution network containing large-size photovoltaic power generation and gird connection. The random planning method comprises the steps of simulating an output curve of a large-size photovoltaic power station according to real-time illumination intensity and ambient temperature data, considering randomness and fluctuation of photovoltaic output, building a random expectation value two-layer planning mathematical model of the power distribution network containing large-size photovoltaic power generation and gird connection according to an equivalent energy function method and a random planning theory, designing a reasonable hybrid algorithm according to a self-adaptive genetic algorithm and a primal-dual interior point method, and performing effective solving on the planning model to obtain an optimal planning scheme. By the random planning method, the random planning demand of a power grid containing large-size photovoltaic power generation and gird connection is satisfied, and the random planning method has the advantages of clear logic structure, practicability and reasonableness. The method conforms to the large-size photovoltaic development trend at the present stage and in future, has high theoretical property and practicability, and can be widely applied to random planning simulation calculation of a power system for large-size photovoltaic power generation.

Description

technical field [0001] The invention relates to a transmission network technology, in particular to a random planning method for a transmission network including large-scale photovoltaic power generation grid connection. Background technique [0002] With the rapid economic development, energy and environmental issues have become the focus of the world today. The demand for energy such as coal, oil, and natural gas is increasing day by day, but these energy sources are non-renewable, and will cause serious pollution to the environment during the utilization process, and the impact on the healthy development and stability of society is also increasing. Solar energy is a clean The photovoltaic power generation technology that converts solar energy into electrical energy can effectively alleviate the severe situation of energy shortage and the pressure of environmental pollution. [0003] With the support of government policies in various countries, after years of research, ph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/38G06F17/50
CPCG06F30/367H02J3/385H02J3/00H02J2203/20Y02B10/10Y02E10/56
Inventor 范宏左路浩高绘彦马莲
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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