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Method and system for preventing error drive of ATWT (Anticipated Transients without Trip) equipment cabinet

A nuclear power plant, mis-drive technology, applied in the field of nuclear power, can solve problems such as ATWT protection mis-drive, and achieve the effect of malfunction suppression

Active Publication Date: 2012-01-18
中广核工程有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method and system for preventing the nuclear power plant shutdown protection system from refusing to activate the ATWT cabinet mis-driving in view of the defect that ATWT protection mis-driving is prone to occur in the prior art

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  • Method and system for preventing error drive of ATWT (Anticipated Transients without Trip) equipment cabinet
  • Method and system for preventing error drive of ATWT (Anticipated Transients without Trip) equipment cabinet
  • Method and system for preventing error drive of ATWT (Anticipated Transients without Trip) equipment cabinet

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] Such as image 3 As shown, the system driven by the ATWT cabinet of the preferred embodiment of the present invention includes a main feedwater flow signal acquisition module 10, a power failure signal acquisition module 20, a nuclear instrument signal acquisition module 30 and an ATWT cabinet 40, and a power failure signal acquisition module 20 It is used to collect the power failure signal of the reactor protection cabinet (that is, the RPC cabinet). The power failure signal can be the power failure signal of the main power supply or the backup power supply in the RPC cabinet; when the pow...

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Abstract

The invention discloses a method and system for preventing error drive of an ATWT (Anticipated Transients without Trip) equipment cabinet, wherein the method comprises the following steps of: collecting a main feedwater flow signal and a nuclear instrument signal; collecting a power loss signal of a reactor protection equipment cabinet; outputting a first signal after the power loss signal and the main feedwater flow signal are subjected to a first logic AND treatment; and outputting a second signal after the first signal and the nuclear instrument signal are subjected to a second logic AND treatment, wherein the second signal is used for determining whether ATMT happens or not. Through the collection of the power loss signal of the reactor protection equipment cabinet and the corresponding logic treatment of the signals, the error protection of the ATWT is effectively inhibited.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a method and system for preventing wrong driving of ATWT cabinets in nuclear power plants. Background technique [0002] The protection method of the reactor protection system for accident conditions is mainly emergency shutdown. When the emergency shutdown protection fails, the ATWT (Anticipated Transients without Trip shutdown protection system refuses to move) cabinet will be activated. If the parameters of the nuclear power plant reach the emergency shutdown protection threshold but no emergency shutdown protection signal is generated, or the emergency shutdown circuit breaker is not disconnected although the emergency shutdown signal is generated, and the reactor cannot be directly emergency shutdown, ATWT occurs. [0003] ATWT cabinets employ such figure 1 According to the protection logic shown, when the nuclear power in the middle range of the nuclear power plant i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21D3/06
CPCY02E30/40Y02E30/00
Inventor 王巧燕田亚杰江辉张龙强李恒
Owner 中广核工程有限公司
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