Effect of Asymmetric Hydrodynamic Impact on the Dynamic Response

Hua, Jianbo; Wu, Jia; Wang, Weihui

doi:10.51400/2709-6998.2456

Cited by 6 publications

(2 citation statements)

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“…To grasp the closing opportunity is the key and difficult point of automatic synchronization control. [4] When the voltage and frequency difference are within limits, the closing signal will be activated just before the next phase accordance. In order to close the circuit breaker of the incoming generator just at the moment of phase accordance, the circuit breaker make time must be taken into consideration.…”

Section: Application In Automatic Synchronization Controlmentioning

confidence: 99%

A New Timing Method Based on PLC Scan Cycle Time and its Application in Automatic Marine Power Station

Sun

Zhang

2013

AMR

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For an established control system, scan cycle time of the PLC is almost constant during steady operation. Scan cycle time of PLC can be act as a timing unit and realize the function of timer by appropriate programming. The timing method based on PLC scan cycle time is practiced in judgment of start success of generator set and grasping of ACB (air circuit breaker of generator) closing opportunity in automatic synchronization control and achieved the desired results. Application of this timing method reduced the hardware of the control system, improved the reliability and economical efficiency. Several years of operation in training lab proved that this control method is reliable and steady.

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Section: Application In Automatic Synchronization Controlmentioning

confidence: 99%

A New Timing Method Based on PLC Scan Cycle Time and its Application in Automatic Marine Power Station

Sun

Zhang

2013

AMR

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“…To grasp the closing opportunity is the key and difficult point of automatic synchronization control. [3] In order to close the circuit breaker of the incoming generator just at the moment of phase accordance, the circuit breaker make time must be taken into consideration. [4] The closing signal should be outputted in advance.…”

Section: Achievement Of Synchronizing Conditionsmentioning

confidence: 99%

Research on the Automatic Synchronization Control of Marine Power Station

Sun

2011

AMR

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Automatic synchronization is one of the important functions of marine power station management system. Grasping of ACB (air circuit breaker of generator) closing opportunity is the difficult and key point of automatic synchronization control. This paper offers a rapid and simple method of automatic synchronization control based on PLC and emphasizes on discussing a new method of grasping ACB closing opportunity in synchronization control. The system researched makes the best use of the computing function of PLC program and reduces the hardware as possible to improve the reliability and economical efficiency. Similar triangle principle and a new timing mode based on PLC scan cycle are adopted in grasping ACB closing opportunity. Several years of operation in training lab proved that the automatic synchronization system is reliable and steady.

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