A remote operation and maintenance management system for distribution stations

Abstract

The present invention discloses a remote operation and maintenance management system for a power distribution station, which relates to the technical field of power distribution station operation and maintenance, and comprises: an information module, wherein the information module comprises a data acquisition unit and a data transmission unit, wherein the data acquisition unit is used to acquire operating parameter data of the power distribution station, and the data transmission unit is used to convert the operating parameter data of the data acquisition unit into an electrical signal and transmit the signal; the specific working mode of the data transmission unit comprises: first deploying sensors and image acquisition equipment; being able to automatically cache key data when the network is unstable, and retransmit it after the network is restored to ensure data integrity; utilizing real-time monitoring and local data analysis to timely warn of anomalies and reduce safety hazards; improving the accuracy and reliability of remote control through intelligent emergency response and delay compensation mechanisms; optimizing maintenance plans through intelligent evaluation and maintenance prompts, and reducing the workload of maintenance personnel and the number of on-site maintenance times.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution station operation and maintenance, and more particularly to a remote operation and maintenance management system for a power distribution station. Background Art

[0002] Power distribution stations and their internal distribution network switchgear are the most basic electrical equipment in the power system. They have a large market application volume and are widely used. The management units are basically end users from all walks of life. Generally, each end user's power distribution station has multiple distribution network switchgears that are combined in different ways to form one or more power distribution systems, providing distribution, carrying and control functions for the user's power supply.

[0003] Since distribution stations are installed in various areas, on-site personnel cannot perform real-time maintenance on them. Therefore, a remote operation and maintenance management system was developed to perform daily maintenance and management of distribution stations. This not only reduces the need for on-site personnel and saves manpower and material resources, but also reduces overall operation and maintenance costs through preventive maintenance strategies.

[0004] However, in actual use, distribution stations in remote areas often face the problem of insufficient network coverage. Due to their remote locations, the communication infrastructure in these areas may be imperfect, resulting in unstable or complete lack of network connection, which directly affects the data transmission and real-time monitoring capabilities of the remote operation and maintenance management system.

[0005] Moreover, distribution stations in remote areas face the problem of lack of professional operation and maintenance personnel. Due to their remote geographical location, it is difficult to attract and retain professional and technical personnel, and there is also a problem in how to maintain the daily maintenance of distribution stations. Summary of the Invention

[0006] In order to solve the above problems, the present invention provides a remote operation and maintenance management system for a power distribution station.

[0007] The present invention provides a remote operation and maintenance management system for a power distribution station, comprising: an information module, the information module comprising a data acquisition unit and a data transmission unit, the data acquisition unit being used to acquire operating parameter data of the power distribution station, the data transmission unit being used to convert the operating parameter data of the data acquisition unit into an electrical signal and transmit the electrical signal;

[0008] The specific working mode of the data transmission unit includes:

[0009] First, deploy sensors and image acquisition equipment to obtain the operating parameter data of the distribution station through the sensors, and obtain the image data of the distribution station through the image acquisition equipment;

[0010] The data transmission unit is further configured to determine the network connection status during data transmission, and if the connection status is unstable, automatically cache the operating parameter data of the data acquisition unit until the network connection is stable, and then resend the operating parameter data of the data acquisition unit to the monitoring module;

[0011] A monitoring module, the monitoring module including a real-time monitoring unit, the real-time monitoring unit receiving the operating parameter data transmitted by the data transmission unit, and remotely monitoring the power distribution station in real time based on the operating parameter data transmitted by the data transmission unit and the data acquisition unit, detecting whether there is any abnormality in the operation of the power distribution station, and generating an early warning signal if there is any abnormality;

[0012] The monitoring module further includes a local storage and analysis unit, which is used to store the historical operating parameter data sent by the data transmission unit as local data. In the event that the network of the data transmission unit is unstable, the local data is analyzed to assess whether there is any abnormality in the operation of the power distribution station, and if so, an early warning signal is generated.

[0013] After the network of the data transmission unit is stable, whether there is any abnormality in the operation of the distribution station is re-checked based on the updated real-time operating parameter data;

[0014] A remote control module, comprising a control unit, an emergency unit, and a delay processing unit. The control unit is configured to perform emergency operations based on the warning signal generated by the monitoring module and generate a maintenance signal for transmission to the maintenance module.

[0015] The emergency unit is used to automatically perform emergency operations according to preset rules when the network between the data transmission unit and the monitoring module is unstable, and generate a maintenance signal to transmit to the maintenance module;

[0016] The delay processing unit is used to compensate for network delay when the control unit and the emergency unit perform emergency operations;

[0017] The maintenance module includes an evaluation unit and a maintenance unit. The evaluation unit is used to evaluate the time when the maintenance personnel will next perform maintenance on the distribution station based on the maintenance signal of the remote control unit and transmit the evaluation signal to the maintenance unit. The maintenance unit is used to send a signal to the maintenance personnel's mobile phone terminal based on the evaluation result of the evaluation unit, prompting the maintenance personnel to perform maintenance on the distribution station.

[0018] Preferably, the specific working steps of the evaluation unit include:

[0019] An emergency estimated value is calculated for each operating parameter data, and the emergency estimated values of the operating parameters exceeding the safety threshold range in the warning signal are accumulated to obtain the total emergency estimated value of the warning signal;

[0020] A threshold value of a total emergency estimate value is set in advance. This threshold value is the critical threshold value for the maintenance of the distribution station. Emergency operations are performed based on the total emergency estimate value of the early warning signal. For early warning signals that are lower than the total emergency estimate value threshold, remote maintenance is performed. For signals that are higher than the total emergency estimate value threshold, the distribution station is shut down by a remote switch, and a maintenance signal is generated to the maintenance module, and on-site maintenance is performed through the maintenance module.

[0021] Preferably, the specific working mode of the maintenance unit includes:

[0022] The maintenance unit first receives the maintenance signal from the evaluation unit and sends the specific information of the maintenance task to the maintenance personnel's mobile terminal via SMS, application push notification or other communication methods;

[0023] After receiving the maintenance task notification, the maintenance personnel confirms the task and feeds back to the maintenance unit.

[0024] Preferably, the specific working steps of the data transmission unit are as follows:

[0025] By sending a data packet and waiting for its confirmation reply, the round-trip time of the operating parameter data is measured;

[0026] Dynamically adjust the timeout retransmission time based on the measured value of the round-trip time of the operating parameter data packet;

[0027] When it is detected that the round-trip time of the operating parameter data packet is greater than a preset threshold, it is determined that the network connection state is unstable, and the data transmission unit caches the collected operating parameter data and waits for the network to recover;

[0028] If no confirmation reply is received within the set retransmission timeout period, the data packet is considered lost and the retransmission mechanism is triggered. Specifically, when three consecutive data packets sent from the same channel are received and waiting for their confirmation, the unconfirmed operating parameter data will be retransmitted immediately without waiting for the retransmission timeout to expire.

[0029] Preferably, the specific working steps of the real-time monitoring unit are as follows:

[0030] First, receiving operating parameter data from the data transmission unit, specifically including voltage, current, power factor, frequency, device status, ambient temperature and humidity;

[0031] Preset a safe threshold range for each operating parameter data;

[0032] If any operating parameter data exceeds a safe threshold range, the real-time monitoring unit generates an early warning signal.

[0033] Preferably, the specific working mode of the local storage analysis unit is as follows:

[0034] comprising a local storage database, a time window being set in advance, wherein the local storage database stores the operating parameter data of the data transmission unit in the local storage database according to the time window;

[0035] In the case that the network of the data transmission unit is unstable, the local data in the local storage database is analyzed, and the operating parameter data of the previous time window is used to evaluate whether there is any abnormality in the operation of the distribution station. If there is any abnormality, an early warning signal is generated.

[0036] Preferably, the specific working method of the local storage analysis unit also includes:

[0037] Abnormal cancellation: After the network is restored, based on the latest real-time operating parameter data assessment, if it is determined that the operating status of the distribution station has returned to normal, the previous warning signal will be cancelled;

[0038] Abnormality persists: After the network is restored, real-time operating parameter data still shows abnormality in the distribution station, and the previous warning signal remains valid;

[0039] After the network is restored, if the real-time operating parameter data shows that the number of operating parameter data anomalies has changed in addition to the anomalies previously assessed, a new warning signal will be resent.

[0040] Preferably, the specific working mode of the control unit is as follows:

[0041] First, an early warning signal is received from the monitoring module;

[0042] Obtain from the early warning signal which specific operating parameter data exceeds the safety threshold range;

[0043] Depending on the type of operating parameter data that exceeds the safety threshold range, emergency operations are performed accordingly.

[0044] Preferably, the specific working steps of the emergency unit include:

[0045] Preset an execution rule for each abnormal operating parameter;

[0046] In the event of a network outage, emergency operations will be automatically performed according to the preset execution regulations.

[0047] Preferably, the specific working mode of the delay processing unit is as follows:

[0048] For each abnormal operating parameter, an execution rule is preset, and the amount of delay that needs to be compensated is determined according to the execution rule;

[0049] Before sending the control command, the sending time of the emergency operation command is adjusted according to the calculated network delay and the preset compensation parameters to compensate for the network delay;

[0050] Perform emergency operations according to the adjusted control instructions.

[0051] Beneficial effects: It can automatically cache critical data when the network is unstable and retransmit it after the network is restored to ensure data integrity; use real-time monitoring and local data analysis to promptly warn of anomalies and reduce safety hazards; through intelligent emergency response and delay compensation mechanisms, it improves the accuracy and reliability of remote control; through intelligent evaluation and maintenance prompts, it optimizes maintenance plans, reduces the workload of maintenance personnel and the number of on-site maintenance times, thereby ensuring the stable operation of the distribution station while reducing operation and maintenance costs and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0053] Application scenarios: In actual use, distribution stations in remote areas often face insufficient network coverage. Due to their remote locations, communication infrastructure in these areas may be incomplete, resulting in unstable or complete lack of network connectivity, which directly affects the data transmission and real-time monitoring capabilities of remote operation and maintenance management systems.

[0054] Moreover, distribution stations in remote areas face the problem of lack of professional operation and maintenance personnel. Due to their remote geographical location, it is difficult to attract and retain professional and technical personnel, and there is also a problem in how to maintain the daily maintenance of distribution stations.

[0055] like Figure 1 As shown: A remote operation and maintenance management system for a power distribution station includes: an information module, the information module including a data acquisition unit and a data transmission unit, the data acquisition unit is used to collect operating parameter data of the power distribution station, and the data transmission unit is used to convert the operating parameter data of the data acquisition unit into an electrical signal and transmit it; it should be noted that the front-end part of the information module is responsible for collecting the operating parameter data of the power distribution station and is directly connected to the sensors and intelligent devices of the power distribution station;

[0056] Specific operating parameter data include power parameters of the distribution station, specifically voltage, which monitors the voltage level output by the distribution station to ensure it is within a safe and specified range; measuring the current intensity flowing through the distribution station to assess the load and prevent overload; power factor, a parameter that reflects the efficiency of power utilization and affects power quality and equipment efficiency; frequency, which monitors the frequency of the power grid to ensure it is stable within the specified frequency range;

[0057] Equipment status, including switch status, monitors the opening and closing status of switchgear (such as circuit breakers and disconnectors) in distribution stations to ensure the control and safety of power supply; operating time, records the operating time of equipment for predictive maintenance and life management

[0058] Ambient temperature: monitors the temperature inside the distribution station to prevent equipment damage or efficiency reduction due to overheating; ambient humidity: measures ambient humidity to avoid corrosion or short circuit of electrical equipment due to excessive humidity;

[0059] Electricity consumption: record the electricity consumption of distribution stations for cost analysis and implementation of energy-saving measures;

[0060] The specific working mode of the data transmission unit includes:

[0061] First, deploy sensors and image acquisition equipment to obtain the operating parameter data of the distribution station through the sensors, and obtain the image data of the distribution station through the image acquisition equipment;

[0062] It should be noted that the image data includes infrared images of motors, which are used to monitor the thermal distribution of motors and other equipment and detect overheating problems, and infrared images of transformers, which are used to detect thermal anomalies in transformers and prevent failures;

[0063] The operating parameter data and image data are integrated into a database. When the operating parameter data obtained by the sensor shows an anomaly, the corresponding image data is called for cross-verification. It should be noted that if the temperature sensor shows a temperature rise, the system will automatically call the corresponding image data for cross-verification. For example, if the infrared image also shows a temperature rise, the accuracy of the sensor data is confirmed.

[0064] It can effectively combine sensor data and image data to obtain accurate operating parameter information and execute emergency operations and maintenance plans based on this information. This approach not only improves data accuracy, but also optimizes the use of maintenance resources and ensures stable operation of the distribution station.

[0065] The data transmission unit is also used to determine the network connection status during the data transmission process. If the connection status is unstable, the operating parameter data of the data acquisition unit is automatically cached until the network connection is stable, and the operating parameter data of the data acquisition unit is resent to the monitoring module. It should be noted that when the network is unstable or interrupted, the information module can cache key data and automatically retransmit it after the network is restored. For power distribution stations in remote areas, the integrity and continuity of the data can be ensured.

[0066] A monitoring module, wherein the monitoring module includes a real-time monitoring unit, the real-time monitoring unit receives the operating parameter data transmitted by the data transmission unit, and performs remote real-time monitoring of the distribution station based on the operating parameter data transmitted by the data transmission unit and the operating parameter data of the data acquisition unit, and detects whether there is any abnormality in the operation of the distribution station. If there is any abnormality, an early warning signal is generated. It should be noted that the distribution station is remotely monitored in real time based on the operating parameter data sent by the data transmission unit, and the operating status of the distribution station is detected in a timely manner.

[0067] The monitoring module further includes a local storage and analysis unit, which is used to store the historical operating parameter data sent by the data transmission unit as local data. When the network of the data transmission unit is unstable, the local data is analyzed to evaluate whether there is any abnormality in the operation of the power distribution station. If there is any abnormality, an early warning signal is generated. It should be noted that the local storage and analysis unit is used to analyze the historical data and evaluate the operating status of the power distribution station when the communication is unstable.

[0068] After the network of the data transmission unit is stable, the operation of the distribution station is checked again based on the updated real-time operating parameter data to see if there is any abnormality; it should be noted that after the communication is stable, the operating status of the distribution station is checked again;

[0069] A remote control module, comprising a control unit, an emergency unit, and a delay processing unit. The control unit is configured to perform emergency operations based on the warning signal generated by the monitoring module and generate a maintenance signal to transmit to the maintenance module. It should be noted that the control unit is responsible for performing emergency operations based on the warning signal generated by the monitoring module and generating a maintenance signal.

[0070] The emergency unit is used to automatically perform emergency operations according to preset rules when the network between the data transmission unit and the monitoring module is unstable, and generate a maintenance signal to transmit to the maintenance module; it should be noted that when the network is unstable, the emergency operation is automatically performed according to the preset rules, and the emergency operation can be performed in time when the signal transmission is unstable in remote power distribution stations, thereby reducing safety hazards;

[0071] The delay processing unit is used to compensate for network delay when the control unit and the emergency unit perform emergency operations, thereby ensuring the timeliness of control instructions;

[0072] The maintenance module includes an evaluation unit and a maintenance unit. The evaluation unit is used to evaluate the time when the maintenance personnel will next perform maintenance on the distribution station based on the maintenance signal of the remote control unit and transmit the evaluation signal to the maintenance unit. The maintenance unit is used to send a signal to the maintenance personnel's mobile terminal based on the evaluation result of the evaluation unit, prompting the maintenance personnel to perform maintenance on the distribution station. It should be noted that by using the evaluation unit to evaluate the time when the maintenance personnel will next perform maintenance on the distribution station, the number of unnecessary on-site maintenance operations can be reduced. In remote areas where there are few maintenance personnel for distribution stations, this can not only reduce the number of maintenance operations performed by maintenance personnel and avoid staff shortages, but also maintain the daily maintenance work of the distribution station.

[0073] It should also be noted that it can automatically cache key data when the network is unstable and retransmit it after the network is restored to ensure data integrity; use real-time monitoring and local data analysis to timely warn of anomalies and reduce safety hazards; through intelligent emergency response and delay compensation mechanisms, the accuracy and reliability of remote control are improved; through intelligent evaluation and maintenance prompts, maintenance plans are optimized, the workload of maintenance personnel and the number of on-site maintenance times are reduced, thereby reducing operation and maintenance costs and improving work efficiency while ensuring the stable operation of the distribution station.

[0074] As an optional embodiment: the specific working steps of the evaluation unit include:

[0075] An emergency estimated value is calculated for each operating parameter data, and the emergency estimated values of the operating parameters exceeding the safety threshold range in the warning signal are accumulated to obtain the total emergency estimated value of the warning signal;

[0076] A threshold value of a total emergency estimate value is set in advance. This threshold value is the critical threshold value for the maintenance of the distribution station. Emergency operations are performed based on the total emergency estimate value of the early warning signal. For early warning signals that are lower than the total emergency estimate value threshold, remote maintenance is performed. For signals that are higher than the total emergency estimate value threshold, the distribution station is shut down by a remote switch, and a maintenance signal is generated to the maintenance module, and on-site maintenance is performed through the maintenance module.

[0077] It should be noted that the example of the scoring and threshold setting of each operating parameter in this embodiment is as follows:

[0078] Voltage (power parameter) score: 10 points. Voltage levels are directly related to the stability and safety of power supply. Abnormal voltage may cause equipment damage or power outages, so a higher score is given.

[0079] Current intensity (power parameter): Score: 8 points. Excessive current intensity may cause overload, affecting equipment safety and grid stability, so it has a higher score;

[0080] Power factor (electrical parameter): Score: 7 points. Power factor affects power quality and equipment efficiency, but its impact on safety and stability is slightly smaller than that of voltage and current, so the score is slightly lower.

[0081] Frequency (power parameter): Score: 9 points. The stability of grid frequency is crucial to the power system. Frequency anomalies may lead to large-scale power outages, so the score is high.

[0082] Switch status (equipment status): Score: 6 points. Abnormal switch status may affect the control of power supply, but it can usually be resolved through backup equipment or rapid response, so the score is moderate;

[0083] Running time (equipment status): Score: 4 points. Running time is mainly used for predictive maintenance and life management and has little impact on timing safety, so the score is low;

[0084] Ambient temperature: Rating: 5 points. Overheating may cause damage to the equipment, but there are usually early warning and protection measures, so the score is moderate;

[0085] Environmental humidity: Score: 3 points. Excessive humidity may cause corrosion or short circuit of electrical equipment, but dehumidification and protective measures are usually in place, so the score is low.

[0086] Electricity consumption: Score: 2 points. Electricity consumption is mainly used for cost analysis and energy-saving measures and has little impact on immediate safety and stability, so it receives the lowest score.

[0087] Infrared data images (motor infrared images and transformer infrared images): Score: 8 points. Infrared images are used to monitor equipment thermal distribution and detect overheating problems. They are crucial for preventing failures and ensuring equipment safety, so they are rated high.

[0088] In this embodiment, the total emergency estimate threshold may be 15 points; the specific score may be adjusted and modified by staff according to the actual situation.

[0089] As an optional embodiment: the specific working mode of the maintenance unit includes:

[0090] The maintenance unit first receives the maintenance signal from the evaluation unit, and then sends the specific information of the maintenance task to the maintenance personnel's mobile terminal through SMS, application push notification or other communication methods.

[0091] After receiving the maintenance task notification, the maintenance personnel confirm the task and feedback to the maintenance unit. It should be noted that, assuming that the voltage and current intensity of the distribution station exceed the safety threshold, the assessment unit calculates the total emergency estimate value based on the scores of these two parameters (voltage 10 points, current intensity 8 points) as 18 points. This exceeds the preset total emergency estimate value threshold of 15 points, and the assessment unit determines that on-site maintenance is required;

[0092] After receiving the evaluation results from the evaluation unit, the maintenance unit immediately dispatches the maintenance task and notifies the maintenance personnel. The maintenance personnel receives the notification via the mobile terminal, confirms the task, and prepares the necessary tools and spare parts. The maintenance personnel arrive at the distribution station and perform maintenance work, such as inspecting the transformer and circuit breaker and replacing damaged parts. After the maintenance is completed, the maintenance personnel feedback the maintenance results to the maintenance unit via the mobile terminal.

[0093] As an optional embodiment, the specific working steps of the data transmission unit are as follows:

[0094] By sending a data packet and waiting for its confirmation reply, the round-trip time of the operating parameter data is measured; the measurement of the round-trip time is the basis for determining the network connection status;

[0095] Dynamically adjust the timeout retransmission period based on the measured round-trip time of the data packet, which is an operational parameter. The timeout retransmission period determines the maximum waiting time for a data packet before receiving an acknowledgment reply.

[0096] It should be noted that, in this embodiment, the specific steps of dynamically adjusting the timeout retransmission time are:

[0097] According to the formula , calculate and obtain the smooth round trip time of the operating parameters , is the historical smoothed round trip time, that is, the smoothed round trip time before the current time point. The round trip time for running parameter data, is the smoothing factor, usually around 0.125;

[0098] According to the formula , calculate and obtain the rate of change of round-trip delay ,in is a smoothing factor used to calculate the deviation, usually with a value of about 0.25. is the rate of change of the round-trip delay before the current time point;

[0099] Finally, according to the formula , calculate and obtain the timeout retransmission time ;

[0100] When it is detected that the round-trip time of the operating parameter data packet is greater than a preset threshold, it is determined that the network connection state is unstable, and the data transmission unit caches the collected operating parameter data and waits for the network to recover;

[0101] If no confirmation reply is received within the set retransmission timeout period, the data packet is considered lost and the retransmission mechanism is triggered. Specifically, when three consecutive data packets sent from the same channel are received and waiting for their confirmation, the unconfirmed operating parameter data will be retransmitted immediately without waiting for the retransmission timeout to expire.

[0102] As an optional embodiment: the specific working steps of the real-time monitoring unit are as follows:

[0103] First, receiving operating parameter data from the data transmission unit, specifically including voltage, current, power factor, frequency, device status, ambient temperature and humidity;

[0104] Preset a safe threshold range for each operating parameter data;

[0105] If any operating parameter data exceeds a safe threshold range, the real-time monitoring unit generates an early warning signal;

[0106] Warning signals include which specific operating parameter data exceeds the safe threshold range. It should be noted that specific conditions include voltage surge, current overload, abnormal power factor, frequency deviation, abnormal equipment status, excessively high or low temperature and humidity, etc.

[0107] Early warning signals can be visual (such as warning lights on the dashboard) or digital (such as warnings in text messages or system logs), conveying information through text or the number of warning lights on which specific operating parameter data exceeds the safe threshold range.

[0108] As an optional embodiment: the specific working mode of the local storage analysis unit is as follows:

[0109] A local storage database is included, and a time window is set in advance. The local storage database stores the operating parameter data of the data transmission unit in the local storage database according to the time window; it should be noted that, in this embodiment, the time window can be a time window of 2 hours;

[0110] In the case that the network of the data transmission unit is unstable, the local data in the local storage database is analyzed, and the operating parameter data of the previous time window is used to evaluate whether there is any abnormality in the operation of the distribution station. If there is any abnormality, an early warning signal is generated.

[0111] As an optional embodiment: the specific working method of the local storage analysis unit further includes:

[0112] Abnormal cancellation: After the network is restored, based on the latest real-time operating parameter data assessment, if it is determined that the operating status of the distribution station has returned to normal, the previous warning signal will be cancelled;

[0113] Abnormality persists: After the network is restored, real-time operating parameter data still shows abnormality in the distribution station, and the previous warning signal remains valid;

[0114] After network restoration, if real-time operating parameter data indicates a change in the number of abnormalities in addition to previously assessed anomalies, a new warning signal will be reissued. It is important to note that after network restoration, the system can quickly reassess the substation's operating status based on the latest real-time operating parameter data. For example, if a local assessment indicated an abnormality during a network outage, but data after network restoration indicates normal operation, the system can immediately cancel the previous warning signal, avoiding false alarms and unnecessary emergency responses.

[0115] As an optional embodiment: the specific working mode of the control unit is as follows:

[0116] First, an early warning signal is received from the monitoring module;

[0117] Obtain from the early warning signal which specific operating parameter data exceeds the safety threshold range;

[0118] Depending on the type of operating parameter data that exceeds the safety threshold range, the corresponding emergency operation is performed. It should be noted that, depending on the different operating parameters, the distribution station is remotely controlled. For example, when the grid frequency or voltage exceeds the safety threshold, the power dispatching agency can issue a command to adjust the active and reactive loads of the generator set. If the power generation of the wind farm suddenly increases, causing the grid frequency to rise, the power generation of some wind turbines can be reduced to adjust the grid frequency to prevent the impact on the stability of the grid.

[0119] When a fire or serious short circuit occurs in the distribution room, the main power supply of the distribution room should be turned off immediately to cut off the power supply connected to the fault. If the transformer in the distribution room catches fire due to a fault, the power supply needs to be cut off immediately to prevent the spread of fire and further damage to the equipment;

[0120] When the main power supply or main equipment fails to operate due to a fault, the backup power supply or equipment can be activated to ensure the continuity of power supply. In a factory's power distribution room, if the main power supply line is damaged by lightning, it can be quickly switched to the backup generator to maintain the operation of key production equipment;

[0121] When a fault occurs in the power grid or distribution equipment, the faulty area can be isolated to protect the normal operation of other areas. If a section of the power grid is damaged by a storm, the faulty area can be isolated by disconnecting the relevant circuit breakers to ensure that the power supply to other areas is not affected.

[0122] The specifics vary depending on the operating parameters.

[0123] As an optional embodiment: the specific working steps of the emergency unit include:

[0124] Preset an execution rule for each abnormal operating parameter;

[0125] In the event of a network outage, emergency operations will be automatically performed according to the preset execution regulations.

[0126] It should be noted that, in this embodiment, the implementation provisions are specifically as follows:

[0127] If the monitored voltage exceeds the safety threshold, the system will automatically adjust the transformer tap changer or start the backup power supply to stabilize the voltage;

[0128] Automatically adjust the transformer tap changer once the voltage exceeds the preset range;

[0129] If the adjustment is ineffective, start the backup power supply;

[0130] In a remote area, a lightning strike caused a voltage surge that exceeded the preset safety threshold. The emergency unit automatically adjusted the transformer tap changer to stabilize the voltage, preventing equipment damage.

[0131] If the current intensity exceeds the safety threshold, the system will automatically disconnect some non-critical loads to reduce the current;

[0132] During hot seasons, due to the heavy use of air conditioners and other equipment, the current intensity exceeds the safety threshold. The emergency unit automatically disconnects some non-critical loads, such as the lighting system, to reduce the current intensity and prevent overload.

[0133] When the power factor falls below a preset value, the system adjusts the reactive power compensation equipment to improve it. In industrial areas, the power factor suddenly drops due to the startup of a large number of industrial equipment. The emergency unit automatically adjusts the reactive power compensation equipment, improving the power factor and optimizing power quality.

[0134] When the grid frequency deviates from normal values, the system will adjust generator output or load distribution to stabilize the frequency. In wind power grid-connected areas, power generation fluctuates due to changes in wind speed, causing abnormal grid frequency. The emergency unit automatically adjusts the generator output to stabilize the grid frequency.

[0135] If the system detects an abnormal switchgear status, it will automatically isolate the faulty device and activate the backup device. In the power distribution room, a circuit breaker was abnormal due to aging. The emergency unit automatically isolated the circuit breaker and activated the backup circuit breaker, ensuring the continuity of power supply.

[0136] If the temperature exceeds a preset threshold, the system will activate the cooling system or adjust the load to reduce the temperature. During the high summer temperatures, the temperature inside the distribution station exceeded the preset threshold. The emergency unit automatically activated the cooling system to reduce the temperature and prevent the equipment from overheating.

[0137] When humidity exceeds a preset threshold, the system activates the dehumidification system to reduce humidity. During the rainy season, the humidity in the distribution station exceeded the preset threshold. The emergency unit automatically activated the dehumidification system, effectively reducing humidity and preventing corrosion or short circuits in electrical equipment.

[0138] It can ensure that in the event of a network outage, the distribution station can automatically perform emergency operations according to preset rules, reduce safety hazards, and ensure the stability and security of power supply.

[0139] As an optional embodiment: the specific working mode of the delay processing unit is as follows:

[0140] For each operational parameter anomaly, an execution rule is preset, and the amount of delay to be compensated is determined based on the execution rule. It should be noted that for each operational parameter anomaly, an execution rule is preset, which is the execution rule of the corresponding emergency unit, and a delay compensation parameter is preset for each rule. These parameters can be set based on historical data and network characteristics.

[0141] Before sending the control command, the sending time of the emergency operation command is adjusted according to the calculated network delay and the preset compensation parameter to compensate for the network delay. It should be noted that the calculated network delay in this embodiment is the round-trip time (RTT) of the operating parameter data.

[0142] Perform emergency operations according to the adjusted control instructions.

[0143] For example, in wind power grid-connected areas, due to changes in wind speed causing fluctuations in power generation and abnormal grid frequency, the emergency unit needs to automatically adjust the generator output to stabilize the grid frequency. In the case of network instability, the delay processing unit first monitors the network delay, and then calculates the amount of delay that needs to be compensated based on the preset delay compensation parameters. If the network RTT is 200ms and the preset delay compensation parameter is 100ms, the delay processing unit will advance the sending time of the control instruction by 100ms to ensure that the control instruction can reach the target device within the expected time. In this way, even in the case of network delay, the generator output can be adjusted in time to stabilize the grid frequency.

[0144] How it works

[0145] It can automatically cache critical data when the network is unstable and retransmit it after the network is restored to ensure data integrity; use real-time monitoring and local data analysis to promptly warn of anomalies and reduce safety hazards; through intelligent emergency response and delay compensation mechanisms, it improves the accuracy and reliability of remote control; through intelligent evaluation and maintenance prompts, it optimizes maintenance plans, reduces the workload of maintenance personnel and the number of on-site maintenance times, thereby ensuring the stable operation of the distribution station while reducing operation and maintenance costs and improving work efficiency.

[0146] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of protection of the present invention are within the scope of protection of the present invention. It should be pointed out that for ordinary technical personnel in this technical field, certain improvements and modifications that do not depart from the principles of the present invention should also be considered as the scope of protection of this template.

Claims

1. A remote operation and maintenance management system for a power distribution station, characterized in that: include: An information module, comprising a data acquisition unit and a data transmission unit, wherein the data acquisition unit is used to acquire operating parameter data of the power distribution station, and the data transmission unit is used to convert the operating parameter data of the data acquisition unit into an electrical signal and transmit the electrical signal; The specific working mode of the data transmission unit includes: First, deploy sensors and image acquisition equipment to obtain the operating parameter data of the distribution station through the sensors, and obtain the image data of the distribution station through the image acquisition equipment; The data transmission unit is further configured to determine the network connection status during data transmission, and if the connection status is unstable, automatically cache the operating parameter data of the data acquisition unit until the network connection is stable, and then resend the operating parameter data of the data acquisition unit to the monitoring module; The monitoring module includes a real-time monitoring unit, which receives the operating parameter data transmitted by the data transmission unit, performs remote real-time monitoring of the power distribution station based on the operating parameter data transmitted by the data transmission unit and the data acquisition unit, and detects whether there is any abnormality in the operation of the power distribution station, and generates an early warning signal if there is any abnormality; The monitoring module further includes a local storage and analysis unit, which is used to store the historical operating parameter data sent by the data transmission unit as local data. In the event that the network of the data transmission unit is unstable, the local data is analyzed to assess whether there is any abnormality in the operation of the power distribution station, and if so, an early warning signal is generated. After the network of the data transmission unit is stable, re-evaluate whether there is any abnormality in the operation of the distribution station based on the updated real-time operating parameter data; The remote control module includes a control unit, an emergency unit and a delay processing unit. The control unit is used to perform emergency operations according to the early warning signal generated by the monitoring module and generate a maintenance signal to transmit to the maintenance module; The emergency unit is used to automatically perform emergency operations according to preset rules when the network between the data transmission unit and the monitoring module is unstable, and generate a maintenance signal to transmit to the maintenance module; The delay processing unit is used to compensate for network delay when the control unit and the emergency unit perform emergency operations; The maintenance module includes an evaluation unit and a maintenance unit. The evaluation unit is used to evaluate the time when the maintenance personnel will next perform maintenance on the distribution station based on the maintenance signal of the remote control unit and transmit the evaluation signal to the maintenance unit. The maintenance unit is used to send a signal to the maintenance personnel's mobile phone terminal based on the evaluation result of the evaluation unit, prompting the maintenance personnel to perform maintenance on the distribution station.

2. A remote operation and maintenance management system for a power distribution station according to claim 1, characterized in that: The specific working steps of the evaluation unit include: An emergency estimated value is calculated for each operating parameter data, and the emergency estimated values of the operating parameters exceeding the safety threshold range in the warning signal are accumulated to obtain the total emergency estimated value of the warning signal; A threshold value of a total emergency estimate value is set in advance. This threshold value is the critical threshold value for the maintenance of the distribution station. Emergency operations are performed based on the total emergency estimate value of the early warning signal. For early warning signals that are lower than the total emergency estimate value threshold, remote maintenance is performed. For signals that are higher than the total emergency estimate value threshold, the distribution station is shut down by a remote switch, and a maintenance signal is generated to the maintenance module, and on-site maintenance is performed through the maintenance module.

3. A remote operation and maintenance management system for a power distribution station according to claim 1, characterized in that: The specific working mode of the maintenance unit includes: The maintenance unit first receives the maintenance signal from the evaluation unit and sends the specific information of the maintenance task to the maintenance personnel's mobile terminal via SMS, application push notification or other communication methods; After receiving the maintenance task notification, the maintenance personnel confirms the task and feeds back to the maintenance unit.

4. A remote operation and maintenance management system for a power distribution station according to claim 1, characterized in that: The specific working steps of the data transmission unit are as follows: By sending a data packet and waiting for its confirmation reply, the round-trip time of the operating parameter data is measured; Dynamically adjust the timeout retransmission time based on the measured value of the round-trip time of the operating parameter data packet; When it is detected that the round-trip time of the operating parameter data packet is greater than a preset threshold, it is determined that the network connection state is unstable, and the data transmission unit caches the collected operating parameter data and waits for the network to recover; If no confirmation reply is received within the set retransmission timeout period, the data packet is considered lost and the retransmission mechanism is triggered. Specifically, when three consecutive data packets sent from the same channel are received and waiting for their confirmation, the unconfirmed operating parameter data will be retransmitted immediately without waiting for the retransmission timeout to expire.

5. A remote operation and maintenance management system for a power distribution station according to claim 1, characterized in that: The specific working steps of the real-time monitoring unit are as follows: First, receiving operating parameter data from the data transmission unit, specifically including voltage, current, power factor, frequency, device status, ambient temperature and humidity; Preset a safe threshold range for each operating parameter data; If any operating parameter data exceeds a safe threshold range, the real-time monitoring unit generates an early warning signal.

6. A remote operation and maintenance management system for a power distribution station according to claim 5, characterized in that: The specific working mode of the local storage analysis unit is as follows: comprising a local storage database, a time window being set in advance, wherein the local storage database stores the operating parameter data of the data transmission unit in the local storage database according to the time window; In the case that the network of the data transmission unit is unstable, the local data in the local storage database is analyzed, and the operating parameter data of the previous time window is used to evaluate whether there is any abnormality in the operation of the distribution station. If there is any abnormality, an early warning signal is generated.

7. A remote operation and maintenance management system for a power distribution station according to claim 6, characterized in that: The specific working method of the local storage analysis unit also includes: Abnormal cancellation: After the network is restored, based on the latest real-time operating parameter data assessment, if it is determined that the operating status of the distribution station has returned to normal, the previous warning signal will be cancelled; Abnormality persists: After the network is restored, real-time operating parameter data still shows abnormality in the distribution station, and the previous warning signal remains valid; After the network is restored, if the real-time operating parameter data shows that the number of operating parameter data anomalies has changed in addition to the anomalies previously assessed, a new warning signal will be resent.

8. A remote operation and maintenance management system for a power distribution station according to claim 1, characterized in that: The specific working mode of the control unit is as follows: First, an early warning signal is received from the monitoring module; Obtain from the early warning signal which specific operating parameter data exceeds the safety threshold range; Depending on the type of operating parameter data that exceeds the safety threshold range, emergency operations are performed accordingly.

9. A remote operation and maintenance management system for a power distribution station according to claim 7, characterized in that: The specific working steps of the emergency unit include: Preset an execution rule for each abnormal operating parameter; In the event of a network outage, emergency operations will be automatically performed according to the preset execution regulations.

10. A remote operation and maintenance management system for a power distribution station according to claim 9, characterized in that: The specific working mode of the delay processing unit is as follows: For each abnormal operating parameter, an execution rule is preset, and the amount of delay that needs to be compensated is determined according to the execution rule; Before sending the control command, the sending time of the emergency operation command is adjusted according to the calculated network delay and the preset compensation parameters to compensate for the network delay; Perform emergency operations according to the adjusted control instructions.

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