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Impact type water turbine regulating system for electric power system stability analysis

A technology for power system stabilization and system regulation, applied in mechanical equipment, hydroelectric power generation, engine components, etc., can solve the problems of complex model, unfavorable model parameter measurement, inappropriate power system stability analysis, etc. Fast, easy-to-recognize results

Active Publication Date: 2014-05-21
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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AI Technical Summary

Problems solved by technology

The current Pelton turbine model is mainly used in the transient process analysis of the hydraulic system, so the model is too complex, which is not conducive to the actual measurement of the model parameters, and is not suitable for the stability analysis of the power system

Method used

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  • Impact type water turbine regulating system for electric power system stability analysis
  • Impact type water turbine regulating system for electric power system stability analysis
  • Impact type water turbine regulating system for electric power system stability analysis

Examples

Experimental program
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Embodiment Construction

[0047] 1.1 Pelton turbine regulating system

[0048] A Pelton Turbine regulating system for power system stability analysis, which consists of a microcomputer PID regulator model, a nozzle follower system model, a deflector follower system model, and a Pelton Turbine model. The model block diagram is as follows: figure 1 shown. Wherein, the microcomputer-based PID regulator model calculates the regulator output according to the input unit frequency signal, the needle follower system model calculates the needle opening output according to the regulator input, and the deflector and The servo system model calculates the output of the deflector opening according to the frequency signal of the unit, and the hydraulic turbine model calculates the mechanical power output of the hydraulic turbine according to the input of the nozzle opening and the input of the deflector opening.

[0049] 1.2 PID governor model

[0050] Pelton turbine has three control modes of speed, opening and po...

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Abstract

The invention discloses an impact type water turbine regulating system for electric power system stability analysis. The system comprises a regulator model, a spray needle servo system model, a deflector servo system model and an impact type water turbine model, wherein a signal input end of the regulator model inputs electric generator frequency and electric generator electromagnetic power; signal input ends of the spray needle servo system model and the deflector servo system model are connected with signal output ends of the regulator model; a signal input end of the impact type water turbine model is connected with signal output ends of the spray needle servo system model and the deflector servo system model; the regulator model calculates output of the regulator model according to input set frequency signals; the spray needle servo system model calculates opening degree output of a spray needle according to input of the regulator model; the deflector servo system model calculates opening degree output of a deflector model according to the set frequency signals; and the impact type water turbine model calculates mechanical power output of the impact type water turbine model according to opening degree input of the spray needle and opening degree input of a deflector. The system is exquisite and distinct in structure, well-defined and available in model parameter, fast, efficient and accurate in modeling process and high in practicability.

Description

technical field [0001] The invention relates to the technical field of hydroelectric power generation and power system modeling, in particular to an impact water turbine regulation system used for power system stability analysis. Background technique [0002] Hydropower is one of the most important power generation methods in my country, accounting for more than 20% of the installed capacity of my country's power system. The establishment of a hydroturbine regulation system model that can represent the actual characteristics of the hydropower system is an important basis for the simulation and stability analysis of the power system including hydropower. The accuracy of the simulation results directly affects the correctness of decision-making in the operation and planning of the power system. However, in the existing power system analysis software (PSASP, BPA, PSS\E), there is no Pelton turbine speed control system model suitable for power system stability analysis. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B15/00
CPCY02E10/20
Inventor 陈刚赵洁洪潮刘涤尘刘蔚孙文涛赵勇唐昱恒熊卿陈雁
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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