Model and Modeling of Generator Speed Regulation System Based on Actual Output Constraints of Thermal System
A thermal system and actual output technology, applied in the field of real-time control of the generator speed control system, can solve the problems of inability to accurately simulate the power generation process of the generator set, the complexity of the speed control model, etc., and achieve reliable and effective model parameters, moderate precision, and engineering practicality sex high effect
Active Publication Date: 2018-05-08
HOHAI UNIV +5
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Problems solved by technology
[0003] At present, the conventional electromechanical transient simulation is too simplified and cannot accurately simulate the power generation process of various generator sets; and the existing speed regulation model is too complicated, so it is necessary to provide a generator speed regulation system model with suitable fineness and high reliability
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[0024] Below in conjunction with accompanying drawing of description, the present invention will be further described.
[0025] Such as figure 1 As shown, the present invention provides a generator speed control system model based on the actual output constraints of the thermal system, the input of which is the system frequency f, a given frequency reference value f 0 and a given power reference value p 0 , the output is the output mechanical power p of the generator.
[0026] The system frequency f, the given frequency reference value f 0 After comparison, a frequency deviation signal Δf=f-f is generated 0 , multiply the frequency deviation signal Δf by The resulting product value plus value 1 is used as the constraint condition of the system; then the constraint condition is expressed as Among them, D is the scaling factor.
[0027] The output mechanical power p of the generator and the given power reference value p 0 After making the difference, the mechanical powe...
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The invention discloses a thermodynamic system actual output constraint based power generator speed regulation system model and modeling. According to the system model, the output mechanical power of the power generator can be controlled in real time according to the system frequency, a given frequency reference value and a given power reference value based on the actual output constraint of the thermodynamic system, a valve action range and the inertia of a shafting system; the problem that the existing model is too complicated is overcome; the power generator speed regulation model with moderate fineness, relatively high engineering practicability and high reliability is established; the modeling method is simple to operate and suitable for the actual power grid; and the obtained model parameters are reliable and effective, so that the power generator speed regulation system model and modeling are of great significance to the stable operation of the electric power system.
Description
technical field [0001] The invention relates to a generator speed regulation system model, in particular to a generator speed regulation system model based on the actual output constraints of a thermal system and a modeling method thereof, belonging to the technical field of real-time control of generator speed regulation systems. Background technique [0002] As my country's electricity load continues to grow, the requirements for the stability of power supply in power systems are getting higher and higher. The stability of regional power supply and distribution affects social economic production and life. The parameter performance of large-scale units is closely related to the stability of power grid generation and transmission. Controlling and adjusting the parameters of generator sets and improving the stability of power grid operation will directly affect the safe and stable operation level of the system. [0003] At present, the conventional electromechanical transie...
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IPC IPC(8): H02J3/46H02P9/44H02P101/25
CPCH02J3/46H02J2203/20H02P9/44H02P2101/25
Inventor 鞠平曹国芳闪鑫王毅陈谦成婧颖陆娟娟罗玉春许林查国强
Owner HOHAI UNIV