High-pressure heater system fault monitoring method and system based on parameter prediction
A system failure and monitoring system technology, applied in the direction of testing/monitoring control system, general control system, electrical testing/monitoring, etc., can solve the problems of insufficient time for operators, low operating safety of units and systems, etc.
Inactive Publication Date: 2020-07-10
华润电力技术研究院有限公司
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[0004] In view of this, the purpose of the present invention is to provide a method for monitoring faults in the high-fill system based on parameter prediction, to solve the problem that the existing high-fill water level needs manual real-time monitoring, and when an abnormality occurs, the operator does not have enough time to intervene, the unit and the system Issues such as low operational security
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[0062] The embodiment of the present invention discloses a method for monitoring faults of the high-fill system based on parameter prediction to solve the problem that the existing high-fill water level requires manual real-time monitoring, and when an abnormality occurs, the operator does not have enough time to intervene, and the safety of the unit and the system is low. And other issues.
[0063] 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 making creative efforts belong to the protection scope of the present invention.
[0064] see Figure 1-Figure 2 , figure 1 A schematic flow chart of...
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The invention discloses a high-pressure heater system fault monitoring method and system based on parameter prediction. Obtained DCS historical data is processed to obtain the opening degree of a high-pressure heater drain valve in the current operation mode; an instruction opening value of the high-pressure heater drain valve is obtained according to an opening instruction of the high-pressure heater drain valve, deviation between the instruction opening value and the high-pressure heater drain valve is calculated, when the deviation of the instruction opening value is larger than or equal toa first deviation value, a high-pressure heater drain valve fault alarm signal is sent out, and the high-pressure heater drain valve is controlled to be switched from PID control to manual operationand send out a manual alarm signal. Therefore, the high-pressure heater drain valve is prevented from being damaged by an actuating mechanism; by monitoring the abnormity of the high-pressure heater drain valve in real time and giving an alarm in advance, the high-pressure heater water level control mode can be switched to the manual operation mode from the PID control mode before equipment abnormity occurs, it is guaranteed that the high-pressure heater water level is relatively stable and does not fluctuate drastically, and the operation safety of a unit and a system is improved.
Description
technical field [0001] The invention relates to the technical field of automatic control of thermal power units, and more specifically, to a method and system for fault monitoring of a high heating system based on parameter prediction. Background technique [0002] With the increasingly market-oriented development of power systems, thermal power plants are undertaking more and more peak-shaving functions, requiring the units to operate automatically at 30% to 100% of the rated load on the basis of stable operation. The automation control level of power plant equipment puts forward higher requirements. In order to meet the requirements of deep peak regulation of the unit and improve the automation control level of the equipment, it is necessary to optimize and transform the original high water level control circuit, and at the same time, carry out the high pressure system and its affiliated equipment. The status is monitored in real time. When the equipment deteriorates, an a...
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IPC IPC(8): G05B23/02
CPCG05B23/0262G05B2219/24065
Inventor 卫平宝聂怀志陈建华张含智马成龙袁雪峰李晓静陈世和姜利辉
Owner 华润电力技术研究院有限公司