Thermal control automation system monitoring point setting case

Abstract: The case information of the monitoring point setting of the thermal control automation system is provided by the excellent flowmeter and flowmeter production and quotation manufacturers. The thermal control automation level of thermal power plants is comprehensively reflected in many aspects, such as control mode, control room layout, configuration and function of thermal control automation system, operation organization and controllability of main and auxiliary equipment. The design level of the thermal control automation system is important to the operators. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the details of the case article on the monitoring point setting of the thermal control automation system. The thermal control automation level of thermal power plants is comprehensively reflected in many aspects, such as control mode, control room layout, configuration and function of thermal control automation system, operation organization and controllability of main and auxiliary equipment. The design level of the thermal control automation system has a great impact on the rational and optimal configuration of operators and the reduction of labor intensity. The design of the thermal control automation system should reasonably configure the control system and monitoring points according to the actual situation of the power plant, so that the personnel are reasonably allocated and the equipment is in a controlled state. 1. The monitoring point of the first phase of the project is set up. The first phase of Huaneng Huaiyin Power Plant is two 220MW coal-fired units, which were completed and put into operation in 1993. After several transformations of the control system, the configuration of the automation system is as follows: the computer integrated manufacturing system (CMIS) of the power plant is used to realize the acquisition and management of real-time data. The two units are respectively set up with unit control rooms, and the unit units adopt distributed control system (DCS) to realize centralized control of furnace, machine and electricity. There are 3 monitoring points for coal, ash and water in the auxiliary workshop. The ash removal system adopts independent programmable logic controller (PLC) network control. There is a host computer station in the control room of Unit 2, but the actual coal transportation and chemical water are still independently controlled in the coal transportation and chemical water control rooms respectively. 2. Setting of monitoring points for the second phase of the project 2.1 Preliminary design The second phase of the project is two 330MW coal-fired units, which were put into operation in the first quarter of 2005. The factory-level monitoring information system (SIS), the unit unit DCS, and the auxiliary workshop control system are used to form an automation system and a computer network, and the design principles of decentralized control functions and centralized information management are implemented [1]. A unit centralized control room is set up for the combination of 2 units, and the unit unit utilizes DCS to realize centralized control of furnace, machine and electricity. In the ash removal control room and the comprehensive pump room control room, the auxiliary workshops of the ash and water systems are monitored through the CRT operator stations of the two control networks of the ash and water systems. In the water system control network, a local host computer station is set up in the control room of the boiler feed water treatment workshop. The workshop CRT operator station is arranged in the electronic equipment room of the main auxiliary workshops such as the condensate polishing workshop and the hydrogen production station. In the ash system control network, the upper computer station of the electrostatic precipitator control system is set to monitor the electrostatic precipitator system. The upper computer station of the electrostatic precipitator control system and the CRT operator station of the ash system control network are arranged together. The electrostatic precipitator system realizes the monitoring function only. The coal conveying control system is expanded on the basis of the first phase of the project, and it will be used together with the first phase, and will not be set up separately. The desulfurization system adopts a separate desulfurization decentralized control system (FGD-DCS) in the desulfurization area, and the operators realize the start/stop of the desulfurization system, the monitoring and adjustment of the operating conditions, and the accident handling in the desulfurization control room through the CRT operator station. 2.2 Adjustment of monitoring points According to the preliminary design of the thermal control automation system, in the actual bidding and construction, in order to better meet the actual operation needs, the monitoring points set in the preliminary design plan have been adjusted. (1) Instead of setting up SIS separately, according to the actual situation that Huaneng Huaiyin Power Plant has successfully developed and applied CMIS during the construction period, on the basis of the original CMIS, a real-time system is built on the hardware to save investment for the purpose of being practical, sufficient and easy to use. ,avoid wasting. Secondary development of the original system is carried out on the software to achieve system integration and upgrade. (2) Merge the two control networks of the ash and water systems, and set up an auxiliary workshop control network to form an auxiliary workshop control system. Since the monitoring of the ash and water systems is realized in the auxiliary control system, according to the actual operation needs, the actual adjustment of the monitoring points of the auxiliary control system is as follows: ① Take the ash removal control room, and only set up the host computer station that can be controlled locally; ② The control room of the comprehensive pump room was upgraded to an auxiliary control room, and then only the chemical operation personnel operated the chemical equipment according to the actual requirements of the operation; ③ The on-site computer station of the boiler supply water is located in the original chemical centralized control room of Phase 1, which is convenient for the chemical operation personnel to take into account 1. Operation of the boiler make-up water system in Phase 2; 4. The ash removal control system network is led to the desulfurization control room, and 2 network upper computers are added in the desulfurization control room to realize the monitoring of ash removal and electrostatic precipitator; 5. Reserve auxiliary in the unit control room The network interface of the control system, such as operation, only need to add 1 host computer to realize the monitoring of all auxiliary control systems in the unit control room;

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