A method for protecting and exiting reactors in mega-kilowatt digital nuclear power plants

A nuclear power plant reactor and reactor protection technology, applied in nuclear power plants, nuclear power generation, nuclear power plant control, etc., can solve the problems of extending the maintenance period and maintenance work cannot be carried out at the same time, so as to improve safety and usability and reduce equipment malfunction risk effect

Active Publication Date: 2011-12-28
LINGDONG NUCLEAR POWER +4
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the RPS system that adopts DCS integration technology does not have a formal withdrawal and commissioning plan at the time of design, so a large number of maintenance work cannot be carried out at the same time during the overhaul period, which greatly prolongs the defect of the maintenance period. Provides a method for protecting and exiting a mega-kilowatt digital nuclear power plant reactor

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  • A method for protecting and exiting reactors in mega-kilowatt digital nuclear power plants
  • A method for protecting and exiting reactors in mega-kilowatt digital nuclear power plants
  • A method for protecting and exiting reactors in mega-kilowatt digital nuclear power plants

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Embodiment Construction

[0031] The principle of RPS protection exit:

[0032] The RPS system is implemented by a variety of functional computers that perform different tasks to monitor the field equipment, summarized as follows figure 1 . From figure 1 It can be seen that the RPS system includes:

[0033] Data Acquisition and Processing Unit (APU for short): It mainly collects data from 1E-level analog sensors and performs relevant processing on the collected data, such as: linear conversion of signals (converting electrical quantities into physical quantities), filtering , threshold calculation, etc. Then the processed signal is sent to the logical operation unit. Each subsystem has two APU units for redundancy.

[0034] Actuator Logic Unit (ALU for short): The logic operation unit mainly performs voting logic operations on the "Partial Order" generated by the APU (such as: 2 / 3, 2 / 4 Voter) and action logic management of the actuator (such as: Engineering special system, reactor disassembly, di...

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Abstract

The invention relates to a protection exit method for a million-kilowatt digital nuclear power plant reactor. A reactor protection system comprises a data collection and processing unit and a logic operation unit, wherein the data collection and processing unit carries out linear conversion, filtering and threshold calculation on signals, then, the processed signals are transmitted to the logic operation unit for carrying out voting logic operation, the logic operation unit is connected with an executing mechanism and is in charge of the action logic management of the executing mechanism, signals generated by the logic operation unit are firstly isolated before the overhaul of a nuclear power plant, and the isolation is removed after the overhaul completion. The protection exit method for the digital nuclear power plant reactor has the advantages that the overhaul construction period is shortened by at least 5 to 10 days, and the misoperation risk of the equipment in the overhaul period is possibly reduced.

Description

technical field [0001] The invention belongs to the key technology in the reactor of a mega-kilowatt digital nuclear power plant, and in particular relates to a method for protecting and exiting a digital nuclear power plant reactor before a mega-kilowatt nuclear power plant is overhauled. Background technique [0002] The reactor protection system (RPS system) of Ling Ao Phase II adopts DCS integration technology, and all reactor protection logics are implemented in software, which are directly output to hardware devices after software calculations to drive on-site actuator actions. Since the RPS system of Ling Ao Phase II adopted DCS integration technology during design, once the power is cut off, it will cause the outage of some necessary equipment and there is no demand for the RPS system to be withdrawn and put into operation. Therefore, the RPS of Ling Ao Phase II The system does not have a formal exit and commissioning plan. Due to the online RPS system, a large amou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21D3/00
CPCY02E30/40Y02E30/00
Inventor 况德军张允炜张薇薇李明钢刘坤亮卢宁卓华贵杨新民陈志远杨剑兵
Owner LINGDONG NUCLEAR POWER
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