Alarm inhibiting method of nuclear plant digital alarming system

An alarm system and nuclear power plant technology, applied in nuclear power plant control, nuclear power generation, nuclear power plants, etc., can solve problems such as heavy operator burden, low work efficiency, and irrelevant alarm suppression, to achieve enhanced stability, enhanced safety, The effect of reducing the burden

Active Publication Date: 2009-01-07
中广核工程有限公司
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AI Technical Summary

Problems solved by technology

The alarm system in the conventional main control room has a low level of intelligence and cannot “suppress” irrelevant alarms as the operating conditions of the nuclear power plant change. At present, the alarm system in the main control room of domestic nuclear power plants does not use alarm suppression technology, which will lead to The operator must pay attention to numerous alarm signals, but cannot quickly find the key alarm signals, so the burden on the operator is heavy, the work efficiency is low, and it also affects the safe operation of the nuclear power plant

Method used

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  • Alarm inhibiting method of nuclear plant digital alarming system

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Effect test

Embodiment 1

[0026] Alarm suppression processing can be operating condition alarm suppression processing. 19 power station operating conditions are pre-defined, plus "undefined operating conditions", and a total of 20 operating conditions are used for alarm suppression. These 20 operating conditions can be divided into 3 categories: normal operating conditions, abnormal operating conditions, and undefined operating conditions. Among them, abnormal conditions refer to the four operating conditions of load rejection, namely, factory power consumption, machine tripping, pile skipping, and safety injection.

[0027] The alarm system can automatically calculate the current unit operating conditions in real time according to the current unit operating parameters and calculation logic, which can be called calculation conditions, and the operator can also manually select the current unit operating conditions, which can be called selection conditions , Except for abnormal conditions. The calculation co...

Embodiment 2

[0030] The alarm signal suppression process can be suppressed by other signals, and an alarm signal can be suppressed by other digital signals. Therefore, a suppression signal list of the alarm signal should be given for each alarm signal. In the design of alarm suppression, the cycle suppression of alarms should be avoided. For example, A alarm inhibits B alarm, B alarm inhibits C alarm, and C alarm inhibits A alarm. According to the relationship between the suppressed signal and the suppressed signal, the suppression of alarms by other signals can be divided into three categories: multi-range alarm suppression processing, causal alarm suppression processing, and comprehensive alarm suppression processing. The multi-threshold alarm suppression processing refers to the suppression relationship between different domain values ​​of the same parameter, such as high and high water level alarms to suppress high water level alarms, low and low water level alarms to suppress low water le...

Embodiment 3

[0035]The alarm suppression processing may be equipment isolation alarm suppression processing. The equipment isolation alarm suppression processing means that when a process equipment is isolated, the alarm signal generated by the process equipment will be processed by the alarm suppression.

[0036] Of course, the alarm suppression processing can also be a variety of other alarm suppression processing methods. For example, the conventional island system can perform alarm suppression processing according to the state of the conventional island. For this reason, three conventional island conditions can be defined: VVP The valve is closed and the vacuum is maintained; the VVP valve is closed and the vacuum is broken; the CEX and APA pumps are out of operation. It is also possible to suppress the alarm signal of the system on the unit that is not responsible for the system according to the operation mode of the specific unit, as long as it is within the steps disclosed in the alarm...

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Abstract

The invention relates to an alarm inhibition method of a digital alarm system of a nuclear power station, which comprises the steps as follows: 1) function validity confirmation is carried out for an alarm signal produced in the alarm system; 2) when the alarm signal is invalid, the alarm signal is prohibited to trigger an alarm, otherwise, step 3) is carried out; 3) according to the present operating conditions, check is performed to see whether other signals inhibit the alarm signal, thus judging whether the alarm signal needs to be concerned, if not, the alarm signal is inhibited and the related alarm indicators are not triggered. By adopting the digital inhibition method of the digital alarm system of the nuclear power station of the invention, the alarm signal which is not necessarily concerned by an operator can be properly inhabited so that the alarm signal does not appear in the alarm list, which reduces the burden of the operator, improves the working efficiency of the operator and strengthens the safe operation guarantee of the nuclear power station.

Description

Technical field [0001] The invention relates to an alarm suppression method, more specifically, to an alarm suppression method for a digital alarm system of a nuclear power plant. Background technique [0002] In the main control room of a general nuclear power plant, the alarm information is displayed to the operator through the alarm window. Due to the limitation of the size of the main control room, the number of alarm windows is limited, so the alarms displayed in the alarm window are mostly combined alarms. Operate after a combined alarm occurs. The operator needs to check the specific reason of the alarm by other means. The conventional main control room alarm system has a low level of intelligence and cannot "suppress" irrelevant alarms as the operating conditions of nuclear power plants change. At present, the main control room alarm system of domestic nuclear power plants does not use alarm suppression technology, which will lead to Operators must pay attention to numero...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21D3/00G21C17/00G05B23/02
CPCY02E30/40Y02E30/00Y02E30/30
Inventor 徐晓梅史觊詹林钰
Owner 中广核工程有限公司
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