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Redundancy clock synchronization device of hydroturbine governing system and timing method of redundant timing device

A technology of speed regulation system and water turbine, which is applied to radio-controlled timers, instruments, etc., can solve the problems of a single source of time and the loss of efficacy of the speed regulation system in time, achieving the effect of simple configuration and cost reduction

Pending Publication Date: 2017-11-24
ANHUI XIANGSHUIJIAN PUMPED STORAGE +3
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AI Technical Summary

Problems solved by technology

[0004] If a single DC B code is used for time synchronization, the time source is relatively single. If there is a problem with the interface, the time synchronization of the speed control system itself will lose its effectiveness

Method used

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  • Redundancy clock synchronization device of hydroturbine governing system and timing method of redundant timing device
  • Redundancy clock synchronization device of hydroturbine governing system and timing method of redundant timing device
  • Redundancy clock synchronization device of hydroturbine governing system and timing method of redundant timing device

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Embodiment Construction

[0028] With the requirements of building intelligent hydropower stations and the development of industrial controllers, network time synchronization is gradually applied in hydropower station systems. For the reliability and stability of the time synchronization of the speed control system of a hydropower station, redundant control of the time synchronization of the speed control system is required. The invention is a redundant time synchronization scheme of a speed regulating system based on DC B code time synchronization and network time synchronization. Including the redundancy of signal sources GPS and Beidou satellites, as well as the DC B-code and network time synchronization redundancy methods for receiving the same signal source or different signal sources. The unified time reference combined with the fault analysis system of the speed control system can fully judge the abnormal events of the speed control system and the power plant, and provide a reliable guarantee fo...

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Abstract

The invention discloses a redundancy clock synchronization device of a hydroturbine governing system. The hydroturbine governing system is provided with two sets of PCCs, the PCCs are connected with a time server to obtain a direct-current B code signal used for clock synchronization, the time server is in communication with a satellite through an antenna, and the timer server outputs a direct-current B code clock synchronization signal and outputs a network clock synchronization signal to the two sets of the PCCs. The device and the method have the advantages that on the premise that the number of existing hardware system is not increased or the modification of the existing hardware system is small, redundancy control of the governing system is achieved, the cost of a hydropower station is reduced, network clock synchronization in the redundancy control process is achieved, and the PCC is easy to configure.

Description

technical field [0001] The invention relates to the field of equipment time synchronization. Background technique [0002] The accuracy and unity of power system time is one of the most basic requirements for power system automation and safe and stable operation. With the increasing level of power system automation, the accuracy and reliability of clock synchronization in hydropower stations in terms of real-time monitoring and fault analysis put forward higher requirements. [0003] The normal operation of automated intelligent equipment and the correct handling and analysis of accidents are inseparable from a unified and reliable time base. The computer monitoring system, protection device, fault recorder, line protection system, MIS system, etc. of the hydropower station generally have a unified time synchronization system. As the key auxiliary equipment of the hydropower station, the time synchronization of the speed control system is relatively small, and some power s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04R20/02G04R40/00
CPCG04R20/02G04R40/00
Inventor 秦卫潮邢红超姚尧唐文利强杰卢玉林蔡卫江靳光永钱凤荣红于红岩陈晓勇
Owner ANHUI XIANGSHUIJIAN PUMPED STORAGE
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