Digital control system and non-nuclear level control system and method for the whole unit of nuclear power plant

Abstract

The invention discloses a digital control system for all plant units in a nuclear power station and a non-nuclear-grade digital control system and method. The non-nuclear-grade digital control system of each unit comprises a first automatic control subsystem and a first operation monitoring subsystem which are in communication connection; the non-nuclear-grade digital control system in the public supply part comprises a second automatic control subsystem; the first automatic control subsystem comprises a plant bus; information exchange between the second automatic control subsystem and the first automatic control subsystem, as well as between the second automatic control subsystem and the first operation monitoring subsystem, is achieved through the plant bus; and the first automatic control subsystem further comprises a network isolating filter module and is used for forwarding a network message to a station related with a physical address according to the physical address in the network message and preventing the network message from being broadcasted to a unit network irrelevant to the physical address. By implementing the technical scheme of the invention, the high efficiency and the stability of network exchange are guaranteed.

Description

technical field [0001] The invention relates to the field of nuclear power, in particular to a digital control system for the whole unit of a nuclear power plant, a non-nuclear level control system and a method. Background technique [0002] Due to the special nature of nuclear power for safety, especially after the Three Mile Island and Chernobyl nuclear accidents in the 1970s and 1980s, the application of new technologies in nuclear power has been relatively conservative, resulting in The DCS (Digital Control System, digital control system) of control theory was really completely applied to the control of nuclear power units relatively late. Prior to this, the vast majority of nuclear power plants used combined instruments. Only a small number of nuclear power plants adopt the control mode combining combined instrumentation and small DCS. [0003] In the non-nuclear grade DCS of the two units of the nuclear power plant, an industrial switching network based on OSM (Optic...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a non-nuclear level digital control system for the entire plant unit of a nuclear power plant in view of the low efficiency of the above-mentioned network exchange in the prior art, which ensures the high efficiency and stability of the network exchange

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