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Active power distribution network soft normally open point (SNOP) planning method considering distributed generator characteristics

A technology of intelligent soft-switching and distributed power supply, applied in photovoltaic power generation, wind power generation, electrical components and other directions, can solve problems such as high dimension, increase the dimension of optimization problem, and difficult to solve, etc.

Active Publication Date: 2016-03-30
TIANJIN UNIV
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Problems solved by technology

[0008] Considering the strong nonlinearity and high dimensionality of the power flow optimization problem itself, the dimensionality of the optimization problem is dramatically increased after scenario analysis, making the SNOP programming problem a large-scale mixed integer nonlinear programming problem (MINLP). methods are difficult to solve

Method used

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  • Active power distribution network soft normally open point (SNOP) planning method considering distributed generator characteristics
  • Active power distribution network soft normally open point (SNOP) planning method considering distributed generator characteristics
  • Active power distribution network soft normally open point (SNOP) planning method considering distributed generator characteristics

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[0107] For this example, first enter the figure 2 The impedance value of the line components in the IEEE33 node system shown, the active power and reactive power of the load components, and the connection relationship of the network topology, the detailed parameters are shown in Table 1 and Table 2; then set the access position of the 5 wind turbines as the node 10, 16, 17, 30, 33, the access capacities are 500kVA, 300kVA, 200kVA, 200kVA, 300kVA respectively, the access locations of the three photovoltaic systems are nodes 7, 13, 27, and the access capacities are 500kVA, 300kVA, 400kVA, the power factor is 1.0; finally set the reference voltage of the system to 12.66kV, and the reference power to 1MVA.

[0108] For this example, it is assumed that the annual variation curves of wind speed and light intensity in the area where the distribution network is located are as follows: image 3 , Figure 4 As shown, SNOP uses back-to-back inverters, and the investment and operating ...

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Abstract

An active power distribution network soft normally open point (SNOP) planning method considering distributed generator characteristics is disclosed. The active power distribution network soft normally open point planning method comprises the steps of inputting corresponding parameters according to a chosen power distribution system separately; obtaining a soft normally open point planning scene and corresponding probability considering wind and light uncertainty; establishing an active power distribution network soft normally open point planning problem mathematical model according to the given power distribution system parameters and the generated planning scene; performing cone model conversion on nonlinear constraints in the active power distribution network soft normally open point planning problem mathematical model according to a standard form of cone planning; generating a soft normally open point planning scheme, optimizing the running state of each scene and calculating an upper layer target function value and a lower layer target function layer; analyzing the adaptability of the generated scheme, if the generated scheme is not the optimal solution, continuing to generate a soft normally open point planning scheme; and if the generated scheme is the optimal solution, outputting the result. The active power distribution network SNOP (soft normally open point) planning problem solving considering the distributed generator characteristics is realized; the planning result is better in adaptability; and the solving efficiency is effectively improved on the premise of ensuring the optimal solution.

Description

technical field [0001] The invention relates to an intelligent soft switch planning method for an active distribution network. In particular, it relates to an intelligent soft-switching planning method for active distribution networks considering the characteristics of distributed power sources. Background technique [0002] Renewable energy is an important part of the energy system. It has the characteristics of wide distribution of resources, great development potential, low environmental impact, and sustainable use. It is an energy resource that is conducive to the harmonious development of man and nature. The development and utilization of renewable energy has become the only way for my country to deal with the increasingly severe energy and environmental problems, and it is also an important factor that must be considered in the development of smart grids. At present, the access of renewable energy is mainly divided into two types, namely centralized access and distrib...

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Application Information

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IPC IPC(8): H02J3/38
CPCH02J3/383H02J3/386H02J2203/20Y02E10/56Y02E10/76
Inventor 王成山宋关羽李鹏冀浩然赵金利
Owner TIANJIN UNIV
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