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Primary frequency modulation realization method in power closed loop mode and device thereof

A technology of power closed-loop and realization method, applied in the direction of reducing/preventing power oscillation, single-network parallel feeding arrangement, etc., can solve problems such as inability to ensure correctness and quickness, and achieve easy mastery, simple coordination, and improved action accuracy. degree of effect

Active Publication Date: 2015-10-21
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0010] In order to solve the problem that the existing primary frequency regulation method cannot ensure correctness and quickness, the embodiment of the present invention provides a method and device for realizing primary frequency regulation in the power closed-loop mode

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  • Primary frequency modulation realization method in power closed loop mode and device thereof
  • Primary frequency modulation realization method in power closed loop mode and device thereof
  • Primary frequency modulation realization method in power closed loop mode and device thereof

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] figure 2 It is a flowchart of a method for implementing primary frequency modulation in a power closed-loop mode according to an embodiment of the present invention. As shown in the figure, the primary frequency modulation implementation method of the present invention includes: Step S101, receiving the power setting value; Step S102, detecting whether the grid frequency fluctuation exceeds the set frequency dead zone; Step S103, if exceeding the frequ...

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Abstract

The present invention provides a primary frequency modulation realization method in a power closed loop mode and a device thereof. The method comprises the steps of receiving a power setting value, detecting whether a power grid fluctuation exceeds a set frequency dead zone, calculating a power changing amount and a power superposition amount according to a unit rated power, a unit frequency and the changing amount of the unit frequency relative to a rated frequency if the power grid fluctuation exceeds the set frequency dead zone, and calculating and generating the power final given value of primary frequency modulation according to the power setting value, the power change amount and the power superposition amount. According to the primary frequency modulation realization method in a power closed loop mode and the device thereof of the embodiment of the invention, the quickness of unit primary frequency modulation is improved, the corresponding power can be outputted timely according to the power gird fluctuation, the motion accuracy of unit primary frequency modulation can be improved, and the cooperation of unit primary frequency modulation and secondary primary frequency modulation is simple and is easily grasped by operating personnel.

Description

technical field [0001] The invention relates to the field of primary frequency regulation of generator sets, in particular to a method and device for realizing primary frequency regulation in a power closed-loop mode. Background technique [0002] In order to ensure the safe operation of the power grid and the generator set, the primary frequency regulation capability of the generator set must be fully utilized, so that the grid-connected unit can adapt to changes in grid load and frequency at any time, and improve the control level of power quality and grid frequency. According to relevant standards such as "DL / T496-2001 Turbine Electro-hydraulic Regulating System and Device Adjustment Test Guidelines", a frequency regulation test was conducted on the hydropower unit to test the unit's primary frequency regulation function, and it was found that some of the units had the following problems under a frequency regulation: [0003] (1) The power adjustment is not in place, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24H02J3/38
Inventor 周攀邓磊周东岳周喜军秦俊高翔吕滔刘仁刘锋
Owner STATE GRID CORP OF CHINA
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