CN-121993778-A - Control method and system for cold end system

CN121993778ACN 121993778 ACN121993778 ACN 121993778ACN-121993778-A

Abstract

The application relates to a method and a system for regulating and controlling a cold end system, wherein the method comprises the steps of collecting flow, water temperature of a tower inlet, water temperature of a tower outlet and electricity consumption data of a cooling tower in operation, collecting angles of electric wind shields of the cold end system, generating performance evaluation indexes of the cold end system based on the flow, the water temperature of the tower inlet, the water temperature of the tower outlet, the electricity consumption data and the angles of the electric wind shields of the cold end system, generating at least one optimized operation regulating and controlling action according to the performance evaluation indexes, and executing the at least one optimized operation regulating and controlling action to regulate and control the cold end system. According to the application, through real-time monitoring of flow, water temperature, electric quantity and other data in the operation of the cooling tower, an optimal operation strategy of the cold end system is constructed, full-time linkage dynamic feedback adjustment of the electric wind shield is realized, intelligent regulation and control of the cold end system of the power plant is realized, and the aims of energy conservation and efficiency improvement are achieved.

Inventors

XUE YONGFENG
ZHANG JIRONG
HUANG JIWEN
XUE MENGFEI
ZHANG HAITAO
LIU YU
WANG DONGPENG
JIN JUNXIAN

Assignees

国家能源集团科学技术研究院有限公司
国电电力朝阳热电有限公司

Dates

Publication Date: 20260508
Application Date: 20260120

Claims (10)

1. A regulation and control method of a cold end system is characterized by comprising the following steps: Collecting data of flow, water temperature entering the tower, water temperature exiting the tower and electricity consumption of a cooling tower in operation, and collecting angles of electric wind shields of a cold end system; Generating performance evaluation indexes of the cold end system based on the flow, the water temperature entering the tower, the water temperature exiting the tower, the electricity consumption data and the angle of the electric wind shield of the cold end system; generating at least one optimized operation regulation and control action according to the performance evaluation index, and executing the at least one optimized operation regulation and control action to regulate and control the cold end system.
2. The method of claim 1 wherein said performing said at least one optimized operational tuning action to tune said cold-end system comprises: Executing the at least one optimized operation regulation action by using a corner stepping motor connected with the electric wind shield of the cold end system so as to drive the electric wind shield of the cold end system to adjust the angle; and under the condition that the angle reaches a target value, regulating and controlling the cold end system to generate a regulating and controlling result of the cold end system.
3. The method of claim 1, further comprising, after regulating the cold end system: Collecting weather environmental parameters around the cooling tower, wherein the weather environmental parameters comprise at least one of atmospheric temperature, atmospheric humidity, soil temperature, soil humidity, rainfall, wind speed, wind direction, air pressure, radiation and illuminance; and optimizing the regulation and control action of the cold end system based on the meteorological environment parameters.
4. The method as recited in claim 1, further comprising: Detecting whether the electric wind shield of the cold end system reaches a preset limit position or not by using an upper limit position switch and a lower limit position switch of the electric wind shield of the cold end system and a photoelectric isolation circuit; And triggering an early warning signal of the cold end system under the condition that the electric wind shield of the cold end system reaches the preset limit position.
5. The method as recited in claim 1, further comprising: Uploading the flow, the tower inlet water temperature, the tower outlet water temperature, the electricity consumption data and the angle of the electric wind shield of the cold end system to a meter control central station and a total dispatching station through a wireless communication network; and receiving the instructions of the metering and control central station and the total dispatching station, and controlling the remote mobile wireless communication of the electric wind shield of the cold end system according to the instructions.
6. A regulation system for a cold end system comprising: the collection module is used for collecting data of flow, water temperature entering the tower, water temperature exiting the tower and electricity consumption of the cooling tower in operation and collecting angles of an electric wind shield of the cold end system; The generating module is used for generating performance evaluation indexes of the cold end system based on the flow, the tower inlet water temperature, the tower outlet water temperature, the electricity consumption data and the angle of the electric wind shield of the cold end system; And the regulation and control module is used for generating at least one optimized operation regulation and control action according to the performance evaluation index, and executing the at least one optimized operation regulation and control action so as to regulate and control the cold end system.
7. The system of claim 6, wherein the regulatory module comprises: The driving unit is used for executing the at least one optimized operation regulation action by using a corner stepping motor connected with the electric wind shield of the cold end system so as to drive the electric wind shield of the cold end system to adjust the angle; and the regulation and control unit is used for regulating and controlling the cold end system under the condition that the angle reaches a target value so as to generate a regulation and control result of the cold end system.
8. The system of claim 6, further comprising: The data acquisition module is used for acquiring meteorological environment parameters around the cooling tower after the cold end system is regulated and controlled, wherein the meteorological environment parameters comprise at least one of atmospheric temperature, atmospheric humidity, soil temperature, soil humidity, rainfall, wind speed, wind direction, air pressure, radiation and illuminance; and the optimizing module is used for optimizing the regulation and control action of the cold end system based on the meteorological environment parameters.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the method of regulating a cold end system as claimed in any one of claims 1 to 5.
10. A computer readable storage medium having stored thereon a computer program, the program being executed by a processor for implementing a method of regulating a cold end system according to any of claims 1-5.

Description

Control method and system for cold end system Technical Field The application relates to the technical field of intelligent management of cold ends of power stations, in particular to a control method and system of a cold end system. Background At present, the circulation efficiency of the thermal power generating unit is generally lower than 50%, and the main reason is irreversible loss of a cold end system. Therefore, starting from the cold end system, an intelligent cold end operation optimization algorithm is independently researched and developed, closed-loop control of the cold end system operation is realized, an online intelligent operation and maintenance platform for intelligent regulation and control of the cooling tower operation characteristic, the condenser vacuum degree, the circulating pump power consumption and the electric wind shield is researched and developed, the information island of the cold end system operation is eliminated, and the intelligent operation of the cold end system of the thermal power unit can be guided. In the related art, various management systems, MIS systems (MANAGEMENT INFORMATION SYSTEM, management information systems) and SIS systems (STRATEGIC INFORMATION SYSTEM, strategic information systems) can be introduced to try to solve the problems of energy conservation and emission reduction of the system, and a digital twin model of the power plant system including various links of the power system is successively built based on various advanced algorithm models so as to adjust the angle of the wind shield. However, in the related art, the cold-end system has a data information island, a set of all-weather real-time monitoring system for evaluating the performance of the wet cooling tower is lacking at present, the cooling performance and the monitoring operation condition of the cooling tower cannot be evaluated in real time, closed-loop control cannot be formed, the requirements of intelligent power plants and intelligent control cannot be met, the cold-end system of the power station needs to be intelligent, the operation adjustment of the current cold-end system is mechanized, the adjustment mode of the circulating water system is not scientific and economical, the intelligent adjustment and control of the circulating water system are not performed on the basis of the operation parameters such as the operation condition of the cooling tower, the cooling load and the like, and the electric wind shield, the efficiency of the cold-end system is reduced, and improvement is needed. Disclosure of Invention The application provides a regulation and control method and a regulation and control system for a cold-end system, which are used for solving the problems that in the related technology, the cold-end system has a data information island, a set of all-weather real-time monitoring system for evaluating the performance of a wet cooling tower is lacking, the cooling performance of the cooling tower cannot be evaluated in real time, the running condition cannot be monitored, closed-loop control cannot be formed, the requirements of intelligent power plants and intelligent control cannot be met, the cold-end system of a power station needs to be intelligent, the running regulation and control of the current cold-end system is mechanized, the regulation mode of a circulating water system is not scientific and uneconomical, the intelligent regulation and control of the circulating water system are not carried out on the basis of the running parameters such as the running condition of the cooling tower, the cooling load and the electric wind shield, and the efficiency of the cold-end system is reduced. An embodiment of a first aspect of the application provides a regulation and control method of a cold end system, which comprises the following steps of collecting flow, water temperature of a tower inlet, water temperature of a tower outlet and electricity consumption data of a cooling tower in operation, collecting angles of electric wind shields of the cold end system, generating performance evaluation indexes of the cold end system based on the flow, the water temperature of the tower inlet, the water temperature of the tower outlet, the electricity consumption data and the angles of the electric wind shields of the cold end system, generating at least one optimized operation regulation and control action according to the performance evaluation indexes, and executing the at least one optimized operation regulation and control action to regulate and control the cold end system. Optionally, in one embodiment of the present application, the performing the at least one optimized operation regulation action to regulate the cold end system includes performing the at least one optimized operation regulation action by using a corner stepper motor connected to the cold end system electric wind deflector to drive the cold end system electric wind deflector to regulate an angle, and