Method and device for verifying operating conditions of pumped storage units based on sequential control process
A technology for pumped storage units and operating conditions, applied in measuring devices, comprehensive factory control, and comprehensive factory control, can solve problems such as misjudgment of working conditions and achieve the effect of preventing misjudgment of working conditions
Active Publication Date: 2018-04-20
NR ELECTRIC CO LTD +1
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[0007] The purpose of the present invention is to provide a method for judging the operating conditions of a pumped storage unit using the sequence control process of the unit for verification, and to solve the problem of misjudgment of operating conditions caused by a single contact circuit failure
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[0046] The overall flow chart of this program is as follows figure 2shown. Specifically, it is divided into the following steps: (1) Create a sequence control process information table, including the operating condition conversion sequence table and the operating condition continuation time table; (2) According to the monitoring system signal and the switch position contact, determine the current state of the unit. Operating conditions; (3) If the determined operating conditions change, the following two checks shall be carried out in sequence: ① Check whether there is the possibility of converting the working conditions in the corresponding sequence according to the operating condition conversion sequence table, if not If there is a possibility of direct conversion, it is considered that the judgment of the current working condition is wrong; ②According to the operating condition duration table, check that the duration of the previous working condition is between the minimum...
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The invention discloses a method for verifying the operating condition discrimination result of a pumped-storage unit by adopting a sequential control process, which includes the steps of: (1) creating a sequential control process information table, including an operating condition conversion sequence table and an operating condition (2) Judging the current operating condition of the unit based on the monitoring system signal and the switch position contact; (3) If the determined operating condition changes, perform verification: ① Check the operating condition conversion sequence table according to the operating condition ② If the previous working condition is terminated abnormally due to the protection action or the mandatory command of the monitoring system, skip this re-verification; otherwise, check the previous working condition Whether the duration of the situation is within a reasonable range. (4) If the determined working condition has not changed, check whether the current working condition has lasted longer than the maximum possible time according to the operating condition duration table. This method can solve the problem of misjudgment of working conditions caused by single contact circuit failure.
Description
technical field [0001] The invention relates to a method for verifying the operating conditions of a pumped storage unit, in particular to a method and a device for verifying the operating conditions of a pumped storage unit based on a sequential control process. Background technique [0002] There are many operating conditions of the pumped storage unit, including water pump operating conditions, water pump phase modulation conditions, power generation conditions, power generation phase modulation conditions, SFC start-up conditions, back-to-back start-up conditions, and shutdown. The process relationship between the conditions is complex and the conversion is frequent. However, there are more than 30 protection functions for large-scale pumped storage units. Under certain working conditions, some protection functions are not applicable or may cause malfunction. It can only be put into use under certain working conditions. Therefore, an accurate identification method of o...
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IPC IPC(8): G05B19/418G01D21/02
CPCY02P90/02
Inventor 王凯王光陈俊张琦雪陈佳胜郭自刚李华忠
Owner NR ELECTRIC CO LTD