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Method and system for optimizing primary frequency modulation, and terminal device

An optimization method and technology of the unit, applied in the direction of AC network circuit, circuit device, reducing/preventing power oscillation, etc., can solve the problem of poor primary frequency modulation performance of the unit, and achieve the effect of optimizing primary frequency modulation

Active Publication Date: 2019-03-08
STATE GRID HEBEI ENERGY TECH SERVICE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a primary frequency regulation optimization method, system and terminal equipment to solve the problem of poor primary frequency regulation performance of units in the prior art

Method used

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  • Method and system for optimizing primary frequency modulation, and terminal device
  • Method and system for optimizing primary frequency modulation, and terminal device
  • Method and system for optimizing primary frequency modulation, and terminal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] figure 1 It shows the flow chart of the implementation of the primary frequency modulation optimization method provided by an embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows:

[0037] Such as figure 1 As shown, a method for optimizing primary frequency modulation provided by an embodiment of the present invention includes:

[0038] In step S101, the generating unit system and the operating state of the generating unit system in the unqualified period of primary frequency regulation in the power grid are acquired.

[0039] In this embodiment, the unit system includes a boiler air coal water system and a steam turbine thermal system.

[0040] In this embodiment, the purpose of acquiring the unit system and the operating state of the unit system during the unqualified period of the primary frequency regulation in the power grid is to optimi...

Embodiment 2

[0098] Such as Figure 9 As shown, the primary frequency modulation optimization system 100 provided by an embodiment of the present invention is used to perform figure 1 The method step in the corresponding embodiment, it comprises:

[0099] An acquisition module 110, configured to acquire the unit system and the operating status of the unit system during a period of unqualified frequency regulation in the power grid;

[0100] A rotational speed acquisition module 120, configured to acquire the rotational speed of the unit from the operating state of the unit system;

[0101] The parameter calculation module 130 is used to calculate the measured parameters of the measured model of primary frequency modulation according to the unit system and the operating state of the unit system, and the measured parameters include the characteristic parameter values ​​of the steam turbine model and the parameter values ​​of the PI controller , speed difference, load delay parameter value,...

Embodiment 3

[0130] Figure 10 It is a schematic diagram of a terminal device provided by an embodiment of the present invention. Such as Figure 10 As shown, the terminal device 10 in this embodiment includes: a processor 100 , a memory 101 , and a computer program 102 stored in the memory 101 and operable on the processor 100 . When the processor 100 executes the computer program 102, it realizes the steps in each embodiment as described in Embodiment 1, for example figure 1 Steps S101 to S105 are shown. Alternatively, when the processor 100 executes the computer program 102, it realizes the functions of each module / unit in each system embodiment as described in Embodiment 2, for example Figure 9 The functions of the modules 110 to 150 are shown.

[0131] The terminal device 10 refers to a terminal with data processing capabilities, including but not limited to computers, workstations, servers, and even smart phones with excellent performance, palmtop computers, tablet computers, pe...

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Abstract

The present invention provides a method and a system for optimizing primary frequency modulation (FM), and a terminal device. The method for optimizing the primary FM comprises: obtaining a unit system of the primary frequency failure period and an operating state of the unit system; obtaining the unit speed, and the measured parameters of the measured model of the primary FM, wherein the measuredparameters comprise the characteristic parameter value of the steam turbine model, the PI controller parameter value, the rotational speed difference, the load delay parameter value, the FM instruction delay value, the PI controller output rate limit value, and the pressure pullback loop parameter value; inputting the different values of the measured parameters in the preset range and the unit speed to the measured model of the primary FM to obtain the simulation result; and optimizing the primary FM according to the primary FM performance reflection function and the simulation result. According to the technical scheme of the present invention, by using the simulation means to determine the dominant factors and optimize the control strategy, the blindness of the conventional method is avoided, the labor intensity and the test risk are reduced, the coupling influence can be solved, the key parameters can be determined, and the pertinence of the primary FM analysis optimization can be improved.

Description

technical field [0001] The invention belongs to the technical field of power grid monitoring, and in particular relates to an optimization method, system and terminal equipment for primary frequency modulation. Background technique [0002] Primary frequency regulation refers to the automatic control process that once the frequency of the grid deviates from the rated value, the control system of the unit in the grid will automatically control the increase or decrease of the active power of the unit, limit the change of the grid frequency, and maintain the stability of the grid frequency. When the frequency of the power grid increases, the primary frequency regulation function requires the unit to use its heat storage to quickly reduce the load, otherwise, the unit quickly increases the load. [0003] The frequency of the power grid is an important indicator of power quality and stable operation of the power grid. It reflects the balance of supply and demand energy in the pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24
CPCH02J3/24H02J2203/20
Inventor 王文营张伟江李泽敏王志强闫晓沛杨海生卢盛阳
Owner STATE GRID HEBEI ENERGY TECH SERVICE CO LTD
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