A pumped-storage unit working condition discrimination and protection switching device with anti-misoperation function
A pumped-storage unit and anti-misoperation technology, which is applied to emergency protection circuit devices, circuit devices, AC network circuits, etc. and other problems to achieve the effect of improving the ability to prevent misoperation and precise peak regulation and frequency regulation
Active Publication Date: 2020-04-17
广东蓄能发电有限公司
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Problems solved by technology
[0003] Due to the irrational setting of working conditions and unreasonable judgment logic in existing pumped storage power plants, it is impossible to accurately determine the actual operating state of the pumped storage unit, and thus cannot guarantee the correct judgment of the protection device, which is prone to malfunction. Affecting the safe and stable operation of the power grid
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[0010] A pumped-storage unit working condition discrimination and protection switch-on / off device with anti-malfunction function, the device includes: a data acquisition and processing module, a discrimination module composed of a discriminator and a protection function switch-on / off module; a data acquisition and processing module, a discriminator , Protection function throwing and withdrawing modules are connected sequentially.
[0011] The data acquisition and processing module receives the binary input parameters through the two-position contact, performs logic operations on the binary input parameters and outputs the result to the input terminal of the discriminator, and the data acquisition and processing module also judges whether the contact is abnormal according to the received binary input parameters; The device judges whether the pumped storage unit is in one or more of the predefined working conditions according to the input results, and outputs the judgment result ...
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The invention discloses a pumping storage unit working condition distinguishing and protecting switching device with an anti-misoperation function. The device comprises a data acquisition and processing module, a judgment module composed of a discriminator and a protection function switching module; wherein the data acquisition and processing module, the discriminator and the protection function switching module are sequentially connected. The judgment result can accurately represent the actual operation state of the unit by setting full and reasonable working conditions and judging logic. A double-position contact is adopted to realize the collection of the opening amount, the anti-misoperation capability is improved, and then the protection device can be correctly triggered. A pumped storage unit can accurately meet the power requirements of a power grid, and peak shaving frequency modulation is realized.
Description
technical field [0001] The invention relates to a pumped-storage unit operating condition discrimination and protection throw-in and withdrawal device with the function of preventing malfunction, in particular to a pumped-storage unit for working condition discrimination and protection throw-in and withdrawal according to the working condition result obtained from the discrimination anti-mistake device. Background technique [0002] The pumped storage unit is different from the ordinary generator set. It can not only output power as a power source, but also store electricity as a load. The stable operation of the pumped storage unit depends on the coordinated action of the generator and the turbine. Therefore, compared with ordinary generating units, the operating conditions of pumped storage units are more complicated, and it is necessary to consider the output of pumped storage units, that is, the operation of the generator, and the hydraulic control, that is, the operatio...
Claims
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IPC IPC(8): H02J3/38H02H7/26
CPCH02H7/26H02J3/381H02J3/382
Inventor 贺儒飞刘阳
Owner 广东蓄能发电有限公司