Method and system for monitoring electrical operation of thermal power plant

Abstract

The invention relates to the technical field of thermal power plant informatization, in particular to a thermal power plant electrical operation monitoring system, which comprises a data acquisition module, a database, an analysis and risk assessment module, an electrical operation anti-misoperation locking module, a monitoring module, a communication module, an alarm module and a review module, the data acquisition module can acquire the temperature information of the equipment in real time, can monitor the mechanical vibration condition of the equipment, and can also acquire the electrical parameters such as voltage, current and power of the equipment through the electrical parameter acquisition device; and the data acquisition module can acquire data in the operation process. According to the invention, personnel monitoring is replaced by intelligent monitoring, the influence of human factors can be prevented, a large amount of human resources can be saved, the monitoring effect on electrical operation is good, and monitoring on electrical operation is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal power plant informatization, and particularly to a method and system for electrical operation supervision in a thermal power plant. Background Art

[0002] With the continuous development of society and the continuous progress of technology, the technologies related to thermal power plant informatization are also constantly improving. There are a large number of various types of electrical equipment involved in thermal power plants, such as circuit breakers, high and low voltage switches, disconnecting switches, etc. Electrical operations are also relatively frequent. When performing electrical operations at high voltage and above, due to the significant impact and high risk, generally when an operator performs an operation, a supervisor must also be present at the same time for supervision to ensure the correct and smooth execution of the electrical operation.

[0003] At present, hydropower plants generally use the method of personnel supervision to supervise electrical operations, which is inefficient and greatly affected by human factors, and cannot well avoid improper operations. When an operator operates, the supervisor uses a mobile device to record the operation process in real time and upload it to the WEB end. Remote monitoring personnel can view the operation execution process in real time on the WEB end, which requires a large amount of human resources, and the supervision effect of electrical operations is not good, which is not conducive to the supervision of electrical operations. Summary of the Invention

[0004] The purpose of the present invention is to solve the following disadvantages in the prior art: At present, hydropower plants generally use the method of personnel supervision to supervise electrical operations, which is inefficient and greatly affected by human factors, and cannot well avoid improper operations. When an operator operates, the supervisor uses a mobile device to record the operation process in real time and upload it to the WEB end. Remote monitoring personnel can view the operation execution process in real time on the WEB end, which requires a large amount of human resources, and the supervision effect of electrical operations is not good, which is not conducive to the supervision of electrical operations, and to propose a method and system for electrical operation supervision in a thermal power plant.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] A system for electrical operation supervision in a thermal power plant includes a data acquisition module, a database, an analysis and risk assessment module, an electrical operation anti-misoperation interlock module, a monitoring module, a communication module, an alarm module, and a review module. The data acquisition module can collect the temperature information of the equipment in real time, the data acquisition module can monitor the mechanical vibration condition of the equipment, and the data acquisition module can also obtain electrical parameters such as voltage, current, and power of the equipment through an electrical parameter acquisition device;

[0007] The data acquisition module can collect the data during the operation process, and the data acquisition module transmits the data to the database for storage and analysis through wired or wireless communication methods;

[0008] The analysis and risk assessment module processes the collected data using data analysis algorithms. By comparing with the normal operating parameter range of the device, it determines whether the device is abnormal. The analysis and risk assessment module can evaluate the standardization and risk level of operations based on the collected operation process data, and can also update the device status information in real time, providing accurate data for subsequent operation judgments. When an operator completes an operation, the analysis and risk assessment module can quickly obtain the new device status and evaluate the feasibility of the next operation based on the new status;

[0009] When the alarm module detects a situation where misoperation may occur, it will immediately issue an alarm signal.

[0010] Preferably, the electrical operation anti-misoperation interlocking module can judge whether actions such as closing and opening, which the operator is about to perform, conform to safety rules based on the current operating state of the device, electrical connection relationship, etc. If it is a misoperation, the system will lock the operation circuit and issue an alarm prompt at the same time, so that the improper behavior of the operator can be known and stopped in time, ensuring the safety of the operation.

[0011] Preferably, the monitoring module can achieve all-round and real-time visual monitoring of the operation site, and can clearly see whether the operator accurately inserts the operation handle and whether the actions during the operation are standard, etc., which is convenient for timely discovering and correcting problems. The monitoring module will also store the collected images, and the storage time period is determined according to the relevant regulations and actual needs of the thermal power plant. Generally, image data from several days to several months will be saved. The monitoring module can automatically identify the device status in the images. For example, it can judge the opening and closing positions of the disconnecting switch through image recognition technology. The monitoring module can automatically determine whether the disconnecting switch is in the open or closed state by extracting and comparing the image features of the disconnecting switch, and compare the analysis result with the actual operation requirements.

[0012] Preferably, the communication module can remotely monitor some operating parameters of the device, etc., and timely feedback the on-site operation progress, changes in device status, etc. If abnormal parameters or other prompt information are found, it can also give timely prompts to ensure the safety and accuracy of the operation.

[0013] Preferably, the review module can conduct a comprehensive review of the entire operation process and device status again, checking whether there are any omitted operation steps and whether the device is in a stable and normal operating state, etc.

[0014] A method for electrical operation monitoring in a thermal power plant uses the data acquisition module to collect in real time the oil temperature of transformers, the winding temperature of motors, etc., and at the same time monitors the vibration amplitude of the generator rotor, etc., and collects information such as the operation time, the identity information of the operator, and the action sequence of the operation, to obtain the electrical equipment status verification result before the electrical operation is executed.

[0015] Preferably, when the analysis and risk assessment module determines that the oil temperature of the transformer exceeds the normal range, the analysis and risk assessment module will analyze the reasons for the increase in oil temperature, which may be excessive load, cooling system failure, etc. It can also judge whether the operation conforms to the standard operation process by analyzing the action sequence and time interval of the operator. If the operation action is too fast or does not conform to the normal operation logic, the analysis and risk assessment module will determine that there is a risk in the operation and transmit a signal to the alarm module. If the operation action conforms to the normal operation logic, the electrical operation can be carried out normally.

[0016] Preferably, the warning methods of the alarm module include sound warning, such as emitting a sharp alarm sound, and visual warning, such as flashing a red warning light on the operation interface and popping up a warning dialog box. When the operator attempts to close the circuit breaker under non-operating conditions, the system will pop up a warning dialog box saying "Operation not allowed, there is a safety risk" on the operation screen and at the same time emit an alarm sound to attract the attention of the operator and prevent misoperation in time.

[0017] Preferably, after the power transmission operation of the transformer is completed, the review module can review whether the oil temperature and oil level of the transformer are normal, whether there are abnormal fluctuations in the voltage and current on each side, and whether the relevant protection devices have been correctly put into operation, etc., to ensure that the electrical system after the operation can operate safely and reliably.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] By using the data acquisition module, database, analysis and risk assessment module, electrical operation anti-misoperation interlock module, monitoring module, communication module, alarm module and review module in cooperation, the electrical equipment status verification result before the electrical operation is executed can be obtained quickly, and the risk of the operation can be evaluated to judge whether the operation action conforms to the normal operation logic. If it conforms to the normal operation logic, the electrical operation can be carried out normally. If it does not conform to the normal operation logic, warning processing will be carried out to prevent wrong operations in time. It can realize intelligent monitoring to replace personnel monitoring, which can not only prevent the influence of human factors, but also save a large amount of human resources, and has a good monitoring effect on electrical operations, which is beneficial to the monitoring of electrical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the system block diagram of a system for electrical operation monitoring in a thermal power plant proposed by the present invention;

[0021] Figure 2 This is a flowchart of a method for electrical operation monitoring in a thermal power plant proposed by the present invention. Specific implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Refer to Figure 1 - Figure 2 , a system for electrical operation monitoring in a thermal power plant, including a data acquisition module, a database, an analysis and risk assessment module, an electrical operation anti-misoperation interlock module, a monitoring module, a communication module, an alarm module, and a review module. The data acquisition module can collect the temperature information of the equipment in real time. The data acquisition module can monitor the mechanical vibration condition of the equipment. The data acquisition module can also obtain electrical parameters such as voltage, current, and power of the equipment through an electrical parameter acquisition device. The data acquisition module can collect data during the operation process and transmit it to the database for storage and analysis through wired or wireless communication methods.

[0024] The analysis and risk assessment module uses data analysis algorithms to process the collected data, and judges whether the equipment is abnormal by comparing with the normal operation parameter range of the equipment. The analysis and risk assessment module can evaluate the standardization and risk degree of the operation according to the collected operation process data, and can also update the equipment status information in real time to provide accurate data for subsequent operation judgment. When the operator completes an operation, the analysis and risk assessment module can quickly obtain the new equipment status and evaluate the feasibility of the next operation according to the new status. When the alarm module detects a possible misoperation situation, it will immediately issue an alarm signal.

[0025] The electrical operation anti-misoperation interlock module can judge whether the operations to be performed by the operator, such as closing and opening, conform to the safety rules according to the current operation status and electrical connection relationship of the equipment. If it is a misoperation, the system will lock the operation circuit and issue an alarm prompt at the same time, so that the improper behavior of the operator can be known and stopped in time to ensure the operation safety.

[0026] The monitoring module can achieve all-round and real-time visual monitoring of the operation site, clearly see whether the operator accurately inserts the operation handle, whether the actions during operation are standardized, etc., which is convenient for timely discovering problems and correcting them. The monitoring module will also store the collected images, and the storage time period is determined according to the relevant regulations and actual requirements of the thermal power plant. Generally, image data will be saved for several days to several months. The monitoring module can automatically identify the equipment status in the images. For example, it can judge the opening and closing positions of the disconnecting switch through image recognition technology. By extracting and comparing the image features of the disconnecting switch, the monitoring module can automatically determine whether the disconnecting switch is in the open or closed state, and compare the analysis results with the actual operation requirements. The communication module can remotely monitor some operating parameters of the equipment, etc., and timely feedback the on-site operation progress, equipment status changes, etc. If abnormal parameters or other prompt information are found, it can also give prompts in time to ensure the safety and accuracy of the operation. The review module can comprehensively review the entire operation process and equipment status again, check whether there are any missing operation steps, whether the equipment is in a stable and normal operating state, etc.

[0027] A method for electrical operation supervision in a thermal power plant uses a data acquisition module to collect in real time, such as the oil temperature of the transformer, the winding temperature of the motor, etc., and at the same time monitor the vibration amplitude of the generator rotor, etc., and collect information such as the operation time, the identity information of the operator, the action sequence of the operation, etc., to obtain the electrical equipment status verification result before the electrical operation is executed. The analysis and risk assessment module is used to judge that the oil temperature of the transformer exceeds the normal range. The analysis and risk assessment module will analyze the reasons for the increase in oil temperature, which may be excessive load, cooling system failure, etc. It can also judge whether the operation conforms to the standard operation process by analyzing the action sequence and time interval of the operator. If the operation action is too fast or does not conform to the normal operation logic, the analysis and risk assessment module will determine that there is a risk in the operation and transmit a signal to the alarm module. If the operation action conforms to the normal operation logic, the electrical operation can be carried out normally.

[0028] The warning methods of the alarm module include sound warning, such as emitting a sharp alarm sound, and visual warning, such as flashing a red warning light on the operation interface and popping up a warning dialog box. When the operator attempts to close the circuit breaker under non-operating conditions, the system will pop up a warning dialog box of "Operation not allowed, there is a safety risk" on the operation screen, and at the same time emit an alarm sound to attract the attention of the operator and stop the misoperation in time. After the transformer power transmission operation is completed, the review module can review whether the oil temperature and oil level of the transformer are normal, whether there are abnormal fluctuations in the voltage and current on each side, and whether the relevant protection devices have been correctly put into operation, etc., to ensure that the electrical system after the operation can operate safely and reliably.

[0029] In the present invention, by using the cooperation of a data acquisition module, a database, an analysis and risk assessment module, an electrical operation anti-misoperation interlock module, a monitoring module, a communication module, an alarm module, and a review module, the electrical equipment status verification result before the execution of an electrical operation can be quickly obtained, and the risk of the operation can be evaluated to determine whether the operation action conforms to the normal operation logic. If it conforms to the normal operation logic, the electrical operation can be carried out normally. If it does not conform to the normal operation logic, an alarm will be processed to promptly stop the wrong operation. It can realize intelligent monitoring to replace personnel monitoring, which can not only prevent the influence of human factors, but also save a large amount of human resources, and has a good monitoring effect on electrical operations, which is beneficial to the monitoring of electrical operations.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A system for electrical operation supervision in a thermal power plant, characterized in that, It includes a data acquisition module, a database, an analysis and risk assessment module, an electrical operation anti-misoperation interlock module, a monitoring module, a communication module, an alarm module, and a review module. The data acquisition module can collect the temperature information of the equipment in real time. The data acquisition module can monitor the mechanical vibration condition of the equipment. The data acquisition module can also obtain electrical parameters such as voltage, current, and power of the equipment through an electrical parameter acquisition device; The data acquisition module can collect data during the operation process and transmit it to the database for storage and analysis through wired or wireless communication methods; The analysis and risk assessment module uses data analysis algorithms to process the collected data. By comparing with the normal operation parameter range of the equipment, it judges whether the equipment is abnormal. The analysis and risk assessment module can evaluate the standardization and risk degree of the operation according to the collected operation process data, and can also update the equipment status information in real time to provide accurate data for subsequent operation judgments. When an operator completes an operation, the analysis and risk assessment module can quickly obtain the new equipment status and evaluate the feasibility of the next operation according to the new status; When the alarm module detects a possible misoperation situation, it will immediately issue an alarm signal.

2. The system for electrical operation supervision in a thermal power plant according to claim 1, wherein The electrical operation anti-misoperation interlock module can judge whether the operations to be performed by the operator, such as closing and opening, conform to the safety rules according to the current operation state of the equipment, electrical connection relationship, etc. If it is a misoperation, the system will lock the operation circuit and issue an alarm prompt at the same time, so as to promptly know and stop the improper behavior of the operator and ensure the operation safety.

3. The system for electrical operation monitoring in a thermal power plant according to claim 1, characterized in that, The monitoring module can realize all-round and real-time visual monitoring of the operation site, and can clearly see whether the operator accurately inserts the operation handle and whether the actions during the operation are standard, etc., which is convenient for timely discovering problems and correcting them. The monitoring module will also store the collected images, and the storage time period is determined according to the relevant regulations and actual needs of the thermal power plant. Generally, image data from several days to several months will be saved. The monitoring module can automatically identify the equipment status in the images, such as judging the opening and closing positions of the disconnecting switch through image recognition technology. The monitoring module can automatically determine whether the disconnecting switch is in the open or closed state by extracting and comparing the image features of the disconnecting switch, and compare the analysis result with the actual operation requirements.

4. A system for electrical operation monitoring in a thermal power plant according to claim 1, characterized in that, The communication module can remotely monitor some operation parameters of the equipment, etc., and timely feedback the on-site operation progress, equipment status changes, etc. If abnormal parameters or other prompt information are found, it can also give prompt in time to ensure the safety and accuracy of the operation.

5. A system for electrical operation monitoring in a thermal power plant according to claim 1, characterized in that, The review module can comprehensively review the entire operation process and equipment status again, and check whether there are any missing operation steps and whether the equipment is in a stable and normal operation state, etc.

6. A method for a system for electrical operation monitoring in a thermal power plant according to any one of claims 1-5, characterized in that, The data acquisition module is used to collect in real time the oil temperature of a transformer, the winding temperature of a motor, etc., and at the same time monitor the vibration amplitude of the generator rotor, etc., and collect information such as the operation time, the identity information of the operator, the action sequence of the operation, etc., to obtain the electrical equipment status verification result before the electrical operation is executed.

7. A method for electrical operation monitoring in a thermal power plant according to claim 6, characterized in that, The analysis and risk assessment module is used to judge that the oil temperature of the transformer exceeds the normal range. The analysis and risk assessment module will analyze the reasons for the increase in oil temperature, which may be excessive load, cooling system failure, etc. It can also judge whether the operation conforms to the standard operation process by analyzing the action sequence and time interval of the operator. If the operation action is too fast or does not conform to the normal operation logic, the analysis and risk assessment module will determine that there is a risk in the operation and transmit a signal to the alarm module. If the operation action conforms to the normal operation logic, the electrical operation can be carried out normally.

8. A method for electrical operation monitoring in a thermal power plant according to claim 6, characterized in that, The warning methods of the alarm module include sound warning, such as emitting a sharp alarm sound, and visual warning, such as flashing a red warning light on the operation interface and popping up a warning dialog box. When the operator attempts to close the circuit breaker under non-operating conditions, the system will pop up a warning dialog box saying "Operation not allowed, there is a safety risk" on the operation screen, and at the same time emit an alarm sound to attract the attention of the operator and prevent misoperation in time.

9. A method for electrical operation monitoring in a thermal power plant according to claim 6, characterized in that, After the power transmission operation of the transformer is completed, the review module can review whether the oil temperature and oil level of the transformer are normal, whether there are abnormal fluctuations in the voltage and current on each side, and whether the relevant protection devices have been correctly put into operation, etc., to ensure that the electrical system after the operation can operate safely and reliably.

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