Nuclear power plant double digital quantity output card configuration system and method

A digital output and configuration system technology, applied in the field of nuclear power plants, can solve the problems of dual digital output card configuration redundancy and safety guarantees, and achieve the effect of reducing the difficulty of diagnosis and maintenance

Active Publication Date: 2014-12-31
中广核工程有限公司 +1
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a kind of Nuclear power plant d

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  • Nuclear power plant double digital quantity output card configuration system and method
  • Nuclear power plant double digital quantity output card configuration system and method
  • Nuclear power plant double digital quantity output card configuration system and method

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[0025] 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.

[0026] The nuclear power plant dual digital quantity output card configuration system provided by the present invention can realize the logical output of dual CPU parallel redundant control, such as figure 2 The redundant logic output of the output signals of the first CPU11 and the second CPU12 is realized in the middle, and then the on-off of the output circuit of the system is controlled, and the power supply 30 is turned on to supply power to the load 40 . The load 40 may be controlled equipment and units. The unique feature of the present invention is that the corresponding type of DO card can be selected according to the logical output requirements of dual CPU parallel redundant control, that is, the fail-safe state of the system output circ...

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Abstract

The invention relates to a nuclear power station double digital quantity output card configuration system and method, wherein the system comprises a first DO card butted with a first CPU (central processing unit), and a second card butted with a second CPU, the first DO card and the second DO card both include relay coils and touch spots, the relay coils are connected with corresponding CPU output ports to form a relay control loop, the touch spots of the first DO card and the second DO card are connected into a system output loop for on-off control, the touch spots of the first DO card and the second DO card are same, and corresponding to fail safe conditions of the system output loop. The invention also provides a nuclear power station digital reactor protection system. According to requirements of the fail safe conditions of the nuclear power station double digital quantity output card configuration system, DO cards with the corresponding type contact spot can be selected, double CPU completely parallel redundancy can be achieved; even if the two CPUs are both in fault, uncontrolled movements affecting equipment and unit safety may appear, and only a failure mode may be produced.

Description

technical field [0001] The invention relates to the technical field of nuclear power plants, and more specifically, relates to a nuclear power plant dual-digital output card configuration system and method, and a nuclear power plant digital reactor protection system. Background technique [0002] With the development of digital technology, digital control system (DCS) is gradually applied in nuclear power plants. Reactor Protection System (RPS) is an important safety system in nuclear power plants. Its function is to protect the reactor, prevent the reactor from operating beyond the safety limit, and limit the consequences when the limit is accidentally exceeded. Digital RPS has extremely high reliability requirements for DCS. For this reason, its control cabinet usually adopts dual CPU active backup or parallel redundant configuration to ensure the reliability of DCS when one CPU fails. [0003] Such as figure 1 As shown, China's million-kilowatt nuclear power unit model ...

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Application Information

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IPC IPC(8): G21C17/00G21D3/06
CPCY02E30/00Y02E30/30
Inventor 郑文波李红林胡明信李超蒋燕李敏
Owner 中广核工程有限公司
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