Generator overspeed protection electric power system electromechanical transient state simulation modeling method

A technology of overspeed protection and transient simulation, which is applied in the fields of electrical digital data processing, aerodynamic improvement, and special data processing applications, and can solve problems such as power system simulation models without overspeed protection

Active Publication Date: 2012-06-27
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is currently no real technical solution for the overspeed protection power system simulation model

Method used

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  • Generator overspeed protection electric power system electromechanical transient state simulation modeling method
  • Generator overspeed protection electric power system electromechanical transient state simulation modeling method
  • Generator overspeed protection electric power system electromechanical transient state simulation modeling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0143] The method according to the present invention is implemented in the power system analysis software PSD-BPA transient stability program widely used in the national power system, wherein RO card and RO+ card are used for simulation.

[0144] RO card format:

[0145] 1-2 A2 RO, data card identification

[0146] 4-11 A8 NAME, generator name

[0147] 12-15 F4.0 BASE, generator rated voltage

[0148] 16 A1 ID, generator identification code

[0149] 18 I1 ICON, control logic selection code, can choose 0 or 1

[0150] When ICON=0,

[0151] 19-23 F5.0 WSET, speed protection setting value (pu, rated speed as the reference, generally should be filled in)

[0152] 24-28 F5.0 DWDT_SET, speed increase rate setting value (pu / s, rated speed as the reference, if not filled in, this limit will not be considered)

[0153] 29-33 F5.0 PLU_SET, power unbalance percentage setting value (%, do not detect switch tripping, do not fill in and do not consider this limit)

[0154] When ICON=...

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Abstract

The invention belongs to the electric power system field, and particularly relates to a generator overspeed protection electric power system electromechanical transient state simulation modeling method. Aiming at generator overspeed protection, a generator overspeed protection model suitable for electric power system electromechanical transient state simulation is built combined with electric power system simulation analysis, action logic judgment of overspeed protection, simulation of a high pressure regulating valve and a middle pressure regulating valve of a steam turbine in a steam turbine model, improvement of a speed regulator and the like are achieved, and a whole generator overspeed protection model is formed so as to achieve the purpose of achieving overspeed protection simulation in electric power system electromechanical transient state simulation software.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to an electromechanical transient simulation modeling method of a power system for generator overspeed protection. Background technique [0002] Generator overspeed protection is a protection device when the speed of the steam turbine is too high. In order to protect the safety of the equipment, the high-pressure and medium-pressure regulating valves are quickly closed to reduce the speed of the steam turbine. Overspeed protection is a conventional protection and one of the necessary protections for thermal power units. [0003] For a long time, this protection has not affected the safety and stability of the power system, so it has not been taken seriously, and the generator overspeed protection has not been truly simulated in the simulation analysis of the power system. In 2008, a large-scale ice disaster occurred in my country. The power grid in some areas was isolated f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02T10/82
Inventor 侯俊贤陈兴华唐晓骏钱峰宋新立吴国炳杨琦杨文佳杨银国
Owner CHINA ELECTRIC POWER RES INST
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