A working condition discrimination and protection switching method with error prevention function
A technology with working conditions and functions, applied in the direction of reducing/preventing power oscillation, AC network load balancing, etc., can solve problems such as misoperation, affecting the safe and stable operation of the power grid, and the inability to ensure the correct judgment of protection devices, etc., to achieve accurate peak regulation and frequency regulation , The effect of improving the ability to prevent misoperation
Active Publication Date: 2020-04-28
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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[0013] A working condition discrimination and protection switching method with error prevention function, the method comprising:
[0014] 1. Collect binary input through two-position contacts:
[0015] 1.1 Collect power generation phase modulation binary input 1 and power generation phase modulation binary input 2 from css;
[0016] 1.2 Collect the closing input of the power generation position of the commutation knife 1, the closing input of the power generation level of the commutation knife 2, the closing input of the pumping water level of the commutation knife 1, the closing input of the pumping water level of the commutation knife 2, Generator outlet circuit breaker system closing input 1, generator outlet circuit breaker system closing input 2, generator outlet circuit breaker system split input 1, generator outlet circuit breaker system split input 2. The opening amount of the guide vane above no load 1, the opening amount of the guide vane above no load 2, the openin...
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The invention discloses a working condition determination and protection commissioning and ceasing method with an anti-error function. The working condition determination and protection commissioningand ceasing method includes the steps: 1) acquiring the input amount through the double position contact; 2) determining whether the double position contact is normal; 3) calculating determination basis data; 4) according to the determination basis data, determining the operating working condition; and 5) according to the operating working condition, commissioning and ceasing a protection device.The working condition determination and protection commissioning and ceasing method with an anti-error function enables the determination result to accurately represent the practical operating state of the unit by setting sufficient and reasonable working condition and the determination logics, can realize acquisition of the input by means of the double position contact, and can increase the capability of anti-misoperation so as to enable the protection device to be triggered correctly to enable the water drawing and energy storage unit to accurately satisfy the electric power demand of the power grid to realize peak load and frequency regulation.
Description
technical field [0001] The invention relates to a working condition discrimination and protection switch-on method with the function of error prevention, in particular to an error prevention method used for working condition discrimination in a pumped storage unit and performing protection switch-on and switch-off according to the working condition result obtained from the discrimination . 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 operation of the turbi...
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IPC IPC(8): H02J3/28H02J3/24
CPCH02J3/24H02J3/28
Inventor 刘阳贺儒飞张磊聂航钟齐勇程诗明蔡朝辉陈杰
Owner 广东蓄能发电有限公司