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Nuclear power station digitization distributed control system and isolation method thereof

A distributed control, nuclear power plant technology, applied in the field of nuclear power, can solve problems such as shortage and achieve the effect of improving safety

Inactive Publication Date: 2014-03-19
中广核工程有限公司 +1
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  • Application Information

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Problems solved by technology

At present, most of the nuclear power plants in operation in China use traditional analog I&C systems, and lack relevant experience in isolation of a large number of digital I&C systems. The isolation technology for digital I&C systems of nuclear power plants in the design stage is still in its infancy. Therefore, There are almost no cases that can be applied in engineering practice

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  • Nuclear power station digitization distributed control system and isolation method thereof
  • Nuclear power station digitization distributed control system and isolation method thereof
  • Nuclear power station digitization distributed control system and isolation method thereof

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] When designing the digital DCS system of a nuclear power plant, its isolation design needs to be considered. Isolation is the measure used to prevent adverse interaction within or between individual devices within a DCS system. Adverse interactions may arise from abnormal operation or failure of any component in the equipment, and may arise from, for example, electromagnetic induction, short circuits, ground faults, fires, chemical explosions, the presence o...

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Abstract

The embodiments of the invention disclose a nuclear power station digitization distributed control system and an isolation method thereof. The system comprises a safety grade subsystem and a non-safety grade subsystem and is characterized by further comprising multiple safety grade AC power buses. Devices in the safety grade subsystem are respectively energized by the independent safety grade AC power buses so as to maintain mutual independence among the devices in the safety grade subsystem; and the non- safety grade subsystem is also energized by the independent safety grade AC power buses, and electrical isolation devices are arranged between the safety grade AC power buses and the non-safety grade subsystem so as to maintain mutual independence among the safety grade AC power buses and the non-safety grade subsystem. By implementing the system and the method provided by the invention, the safety of the nuclear power station digitization distributed control system can be improved.

Description

technical field [0001] The invention relates to the field of nuclear power, in particular to a digital distributed control system of a nuclear power plant and an isolation method thereof. Background technique [0002] With the continuous accumulation of experience in nuclear power plant construction and operation, it is an inevitable trend in the development of nuclear power instrumentation and control systems to replace traditional analog technology with a fully digital Distributed Control System (DCS). [0003] The overall structure of the DCS system can be divided into 4 layers according to the function, which are the interface layer of the process system, the automatic control and protection layer, the operation and management information layer, and the technical management layer of the whole plant. Among them, the process system interface layer is mainly composed of field devices such as sensors, actuators, power supply and power amplification components. It is an inter...

Claims

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Application Information

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IPC IPC(8): G21D3/00
CPCY02E30/40Y02E30/00
Inventor 孙伟郑添张龙强周亮孙永滨咸春宇陈卫华彭华清何大宇
Owner 中广核工程有限公司
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