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Backbone network optimization method of high-proportion renewable energy source electrical power system

A renewable energy, power system technology, applied in the field of power system, can solve problems such as increasing the uncertainty and complexity of power system

Active Publication Date: 2018-07-13
ZHEJIANG UNIV
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Problems solved by technology

However, the large-scale access of intermittent power sources such as wind power and photovoltaic power stations has significantly increased the uncertainty and complexity of the power system, resulting in the fact that the core backbone grid construction method that was originally suitable for conventional power systems is not suitable for High proportion of renewable energy power system

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  • Backbone network optimization method of high-proportion renewable energy source electrical power system
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  • Backbone network optimization method of high-proportion renewable energy source electrical power system

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Embodiment

[0229] Such as figure 1 As shown, a backbone grid optimization method for a high-proportion renewable energy power system, its basic implementation process includes the following detailed steps:

[0230] Step 1. Input the topology parameters (line connection relationship) and electrical characteristic parameters (node ​​parameters, line parameters) of the high-proportion renewable energy power system;

[0231] Step 2. Calculate the parameter values ​​of the load nodes. The specific parameters include:

[0232] 1) Improve topology importance:

[0233]

[0234]

[0235] Where: ε i is the sum of the degree of node i itself and the degrees of all its neighbors, θ i is the normalization function

[0236] 2) Electric energy of nodes:

[0237]

[0238] In the formula: P L,i (t) is the active power of load node i at time t, P B is the power reference value, S L is the set of load nodes.

[0239] 3) Tidal flux:

[0240]

[0241] In the formula: Q L,i (t) is the rea...

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Abstract

The invention relates to a backbone network optimization method of a high-proportion renewable energy source electrical power system so as to consider the effect of high-proportion renewable energy ina backbone network of the electrical power system and the influence on the electrical power system. The basic implementation process comprises the following steps: inputting topological structure andelectrical characteristic parameters of the electrical power system; calculating the relative importance degrees of load nodes, wind power plant nodes, photovoltaic power station nodes and conventional unit nodes; adopting an improved entropy weight-ideal solution to solve the relative importance degrees among the different types of nodes; adopting a staged backbone network to construct a strategy, optimizing the load nodes as a main task in a first-stage model, and adopting a colony algorithm for solution; optimizing power supply nodes as a main task in a second-stage model, and adopting thecolony algorithm in combination with a greedy strategy for solution. The core backbone network optimized and obtained by the method can guarantee power supply for important loads, and has relativelyhigh intermittent energy permeability and utilization rate.

Description

technical field [0001] The invention relates to the technical field of electric power systems, and more specifically, to a method for optimizing a backbone grid of a power system with a high proportion of renewable energy. Background technique [0002] Excessive exploitation and utilization of traditional fossil energy has had many adverse effects on the development of human society, such as environmental pollution and climate change. Renewable energy is an important solution for global energy transition and low-carbon development. At present, the development and utilization of renewable energy are in the stage of rapid development in major countries in the world. The large-scale integration of renewable energy power generation represented by water energy, wind energy and solar energy is an inevitable trend in the development of power systems in the future. The goal of my country's energy transformation and development is to achieve non-fossil energy accounting for 15% and ...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/00H02J3/381H02J3/382H02J3/383H02J3/386H02J2203/20Y02E10/56Y02E10/76
Inventor 林振智赵昱宣韩畅文福拴
Owner ZHEJIANG UNIV
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