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Application Research of a High Reliability Multi-signal Redundant Speed Relay
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Bing-fang SHU1, Wei-jun ZHAO2, Peng-fei LAO2, Bei-rong GAN1, Cheng-zhi DONG1, Liu-tong ZHANG1
Water Resources and Power | 2023, 41(7) : 218 - 220
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Water Resources and Power | 2023, 41(7): 218-220
• ELECTRICAL ENGINEERING •
Application Research of a High Reliability Multi-signal Redundant Speed Relay
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Bing-fang SHU1, Wei-jun ZHAO2, Peng-fei LAO2, Bei-rong GAN1, Cheng-zhi DONG1, Liu-tong ZHANG1
Affiliations
  • 1.Jinshuitan Hydropower Plant, State Grid Zhejiang Electric Power Co., Ltd., Lishui 323000, China
  • 2.Wuhan Sanlian Hydropower Control Equipment Co., Ltd., Wuhan 430200, China
Published: 2023-07-25 doi: 10.20040/j.cnki.1000-7709.2023.20221652
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At present, the existing speed relays on the market only collect single signal source, poor anti-interference. It is easy to disorder the signal of the speed node output caused by measurement signal distortion and measuring channel fault. In order to improve the reliability and accuracy of the speed relay, two channels of residual voltage signals and two channels of sprocket speed measurement signals were respectively connected. Then the dual-probe tooth sequential speed measurement method was combined with the logic of selecting one out of three speed signals. The judgment method selected one speed signal as the main signal. In the signal output process of the rotational speed node, the limiting average filtering method and the method of retrieval interference output blocking were applied to eliminate the distortion in the signal output process. Through the simulation test bench test and the application in the actual generator set, the anti-interference ability of the acquisition signal loop, the signal measurement accuracy, and the reliability of the output action of the speed node have been significantly improved.

double probe  /  signal redundancy  /  tooth sequence frequency measurement  /  choose one from three  /  speed relay
Bing-fang SHU, Wei-jun ZHAO, Peng-fei LAO, Bei-rong GAN, Cheng-zhi DONG, Liu-tong ZHANG. Application Research of a High Reliability Multi-signal Redundant Speed Relay[J]. Water Resources and Power, 2023 , 41 (7) : 218 -220 . DOI: 10.20040/j.cnki.1000-7709.2023.20221652
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Year 2023 volume 41 Issue 7
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221652
  • Receive Date：2022-08-11
  • Online Date：2026-01-28
  • Published：2023-07-25
Article Data
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History
  • Received：2022-08-11
  • Revised：2022-09-23
Funding
Affiliations
    1.Jinshuitan Hydropower Plant, State Grid Zhejiang Electric Power Co., Ltd., Lishui 323000, China
    2.Wuhan Sanlian Hydropower Control Equipment Co., Ltd., Wuhan 430200, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20221652
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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