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Three-phase modeling method for distribution network

A modeling method and technology of distribution network, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as asymmetry

Inactive Publication Date: 2016-10-26
NARI TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Based on the complete symmetry of the three-phase electrical quantity and network parameters of the system, this is inconsistent with the increasingly asymmetrical three-phase parameters of the modern power system and the asymmetry caused by operating conditions.

Method used

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  • Three-phase modeling method for distribution network
  • Three-phase modeling method for distribution network
  • Three-phase modeling method for distribution network

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Embodiment Construction

[0055] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0056] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0057] Such as figure 1 As shown, a distribution network three-phase modeling method, including the following steps:

[0058](1) Establish distribution network line models, including Bergeron model and PI equivalent model of transmission lines;

[0059] (2) Establish the three-phase balance model of the distribution transformer in the distribution network;

[0060] (3) Combining with the establishment of three-phase modeling of distribution network load, polynomials are used to repr...

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Abstract

The invention discloses a three-phase modeling method for a distribution network, comprising the steps of: (1) establishing distribution network line models including a Bergeron model and a PI equivalent model of a transmission line; (2) establishing a three-phase balance model of a distribution transformer of the distribution network; and (3) expressing the static characteristics of active power and reactive power of a load by using a polynomial in combination with three-phase modeling for establishing the load of the distribution network. The three-phase modeling method for the distribution network provides a theoretical basis for three-phase model establishment and parameter setting of equipment in an intelligent distribution network management system, and provides a theoretical foundation for on-line three-phase asymmetrical load flow analysis.

Description

technical field [0001] The invention relates to the technical field of modeling, in particular to a three-phase modeling method of a power distribution network. Background technique [0002] The single-phase equivalent circuit is obtained under the condition that the parameters of the three-phase components are completely symmetrical, and the three-phase current and voltage are completely symmetrical. It takes infinity as the zero potential point, and after taking into account the influence of the other two phases, a single-phase equivalent circuit with the zero potential point as the common terminal is obtained. Based on the complete symmetry of the three-phase electrical quantities and network parameters of the system, this is inconsistent with the increasingly asymmetrical three-phase parameters of the modern power system and the asymmetry caused by operating conditions. [0003] In the power system, generators, transformers, and symmetrical transmission lines can all be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06G06F17/50
CPCG06F30/367G06Q50/06Y02E60/00
Inventor 韩冰张志昌赵家庆钱科军张玉林杜红卫徐春雷韩涛田江陈连杰吕洋
Owner NARI TECH CO LTD
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