High-voltage GIS equipment insulation state real-time monitoring and early warning system

Abstract

The invention relates to the technical field of high-voltage GIS equipment insulation monitoring, and particularly discloses a high-voltage GIS equipment insulation state real-time monitoring and early warning system which is provided with a transmission detection module, a high-voltage GIS equipment historical operation analysis module, an insulation state monitoring module and an insulation state early warning module and analyzes transmission state data of a network. The system can monitor the network transmission state, timely discover the network transmission problem, avoid data transmission interruption and equipment insulation state monitoring failure, analyze historical operation data, excavate the operation rule of the equipment, provide accurate reference for real-time monitoring, monitor and analyze the insulation state data of the high-voltage GIS equipment in real time, and improve the monitoring accuracy of the high-voltage GIS equipment. The insulation performance state of the equipment is quantitatively evaluated, the insulation performance state of the equipment is known, whether the insulation state of the equipment is in a normal range or not is judged, accurate early warning of the insulation state of the equipment is achieved, and measures are taken for repair or maintenance so as to avoid potential safety risks.

Description

Technical Field

[0001] The invention relates to the technical field of insulation monitoring of high-voltage GIS equipment, and in particular to a real-time monitoring and early warning system for the insulation status of high-voltage GIS equipment. Background Art

[0002] At present, high-voltage gas-insulated switchgear (GIS) is widely used in power systems. As one of the main equipment of high-voltage transmission lines, its operating reliability directly affects the stability and safety of the power system. Therefore, the insulation status monitoring and early warning system of GIS equipment is crucial to ensure the safe operation of the power system.

[0003] For example, the invention patent with publication number CN117554759A discloses a multi-signal fusion monitoring method for local discharge faults of GIS pot-type insulators, which belongs to the technical field of GIS pot-type insulator fault detection, and includes the following steps: 1) designing a GIS pot-type insulator defect simulation specimen, building a simulation device, and installing electrical and optical signal monitoring equipment on the device; 2) applying voltage through a test pressurization device to stimulate local discharge signals of preset defects of GIS pot-type insulators; 3) using an industrial computer to connect to the monitoring equipment to collect optical and electrical signal data when local discharge occurs in the test GIS pot-type insulator.

[0004] For example, the invention patent with announcement number CN110531238B discloses a GIS insulation degradation detection device, method and GIS insulation degradation diagnosis system, wherein the GIS insulation degradation detection device includes a voltage regulation module, a discharge gas chamber, a sampling module, an oscilloscope and a mass spectrometer; the input end of the voltage regulation module is used to input alternating current, and the output end of the voltage regulation module outputs an adjustable voltage; a discharge electrode is arranged in the discharge gas chamber, and the discharge electrode is electrically connected to the output end of the voltage regulation module; the input end of the sampling module is electrically connected to the discharge electrode, and the output end of the sampling module is grounded; the oscilloscope is electrically connected to the sampling module, and the oscilloscope is used to monitor the discharge amount of the discharge gas chamber; a sampling hole is arranged on the wall of the discharge gas chamber, and the mass spectrometer detects the gas components in the discharge gas chamber through the sampling hole.

[0005] However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the present application found that the above technology has at least the following technical problems:

[0006] In the existing GIS insulation status monitoring process, the analysis mainly relies on the collected data. However, due to the problem of reduced network transmission performance, the collected data will have delays and errors, which directly affects the reliability and accuracy of the insulation status monitoring results, and it is easy for faults to not be handled in time. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a real-time monitoring and early warning system for the insulation status of high-voltage GIS equipment, which can effectively solve the problems involved in the above-mentioned background technology.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a real-time monitoring and early warning system for insulation status of high-voltage GIS equipment, comprising:

[0009] The transmission detection module is used to detect and obtain the network transmission status data of the high-voltage GIS equipment operation data during the transmission process, and analyze the network transmission index to obtain the network transmission index, which is compared with the network transmission index limit value preset in the status monitoring database. If the network transmission index is less than the preset data transmission index limit value, an early warning prompt will be issued for the data transmission status of the network.

[0010] The high-voltage GIS equipment historical operation analysis module is used to obtain the historical operation data of the high-voltage GIS equipment, analyze it to obtain the historical operation index of the high-voltage GIS equipment, and match it with the reference insulation status data corresponding to the historical operation index intervals of each high-voltage GIS equipment preset in the status monitoring database, thereby obtaining the reference insulation status data corresponding to the high-voltage GIS equipment.

[0011] The insulation status monitoring module is used to monitor the insulation status data of the high-voltage GIS equipment in real time, and conduct a comprehensive analysis with the reference insulation status data corresponding to the current high-voltage GIS equipment to obtain the insulation performance index of the high-voltage GIS equipment.

[0012] The insulation status early warning module is used to compare the insulation performance index of the high-voltage GIS equipment with the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database to obtain the comparison result, and finally issue an early warning prompt for the insulation status of the high-voltage GIS equipment based on the comparison result.

[0013] As a further solution, the data transmission indicator, the specific analysis process is as follows:

[0014] The average transmission bandwidth, average transmission rate, average transmission delay time and average transmission data volume of the network to which the high-voltage GIS equipment operation data belongs during the transmission cycle are comprehensively analyzed to obtain the network transmission indicators.

[0015] As a further solution, the early warning prompt for the data transmission status of the network may be an early warning prompt for the transmission bandwidth of the network or an early warning prompt for the transmission rate.

[0016] As a further solution, the historical operation index of the high-voltage GIS equipment is analyzed in the following specific process:

[0017] The average operating power of the high-voltage GIS equipment during the historical operating cycle is obtained by multiplying the average operating voltage of the high-voltage GIS equipment during the historical operating cycle by the average operating current.

[0018] The average operating power, average insulation resistance, average leakage current, average operating temperature and network transmission indicators of high-voltage GIS equipment during its historical operating cycle are comprehensively analyzed to obtain the historical operating index of high-voltage GIS equipment.

[0019] As a further solution, the insulation performance index of the high-voltage GIS equipment is specifically analyzed as follows:

[0020] The average insulation resistance, average discharge capacity, average micro-water content, average gas concentration, allowable insulation resistance, reference discharge capacity, reference micro-water content and reference gas concentration of the high-voltage GIS equipment during the monitoring period are comprehensively analyzed to obtain the insulation performance index of the high-voltage GIS equipment. The specific analysis method is as follows:

[0021]

[0022] Wherein, ip is the insulation performance index of high-voltage GIS equipment, ri is the average insulation resistance of high-voltage GIS equipment during the monitoring period, ki is the average discharge of high-voltage GIS equipment during the monitoring period, h is the average micro-water content of high-voltage GIS equipment during the monitoring period, c is the average gas concentration of high-voltage GIS equipment during the monitoring period, Δri is the allowable insulation resistance preset in the condition monitoring database, Δki is the reference discharge preset in the condition monitoring database, Δh is the reference micro-water content preset in the condition monitoring database, and Δc is the reference gas concentration preset in the condition monitoring database.

[0023] As a further solution, the insulation performance index of the high-voltage GIS equipment is compared with the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database. The specific comparison process is:

[0024] If the insulation performance index of the high-voltage GIS equipment is greater than or equal to the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database, there is no need to issue an early warning prompt for the insulation status of the high-voltage GIS equipment.

[0025] On the contrary, if the insulation performance index of the high-voltage GIS equipment is less than the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database, it is necessary to issue an early warning prompt for the insulation status of the high-voltage GIS equipment.

[0026] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0027] (1) The present invention can monitor the network transmission status, timely discover and solve network transmission problems, ensure the network transmission status, and provide a basis for subsequent high-voltage GIS equipment insulation status monitoring by analyzing the network transmission status data of the high-voltage GIS equipment operation data during the transmission process. The network transmission index is obtained and compared with the network transmission index limit value preset in the status monitoring database. The abnormal situation of network transmission can be discovered in time and whether the network transmission is in a normal state can be quickly determined. If the network transmission index is less than the preset data transmission index limit value, the data transmission status of the network is warned, which can give early warning and reduce potential data transmission risks, and avoid equipment insulation status monitoring failure caused by data transmission interruption or error.

[0028] (2) By analyzing the historical operation data of high-voltage GIS equipment, the present invention can dig out the operation rules and potential problems of the equipment, obtain the historical operation index of the high-voltage GIS equipment, and then understand the health status and performance change trend of the equipment. The historical operation index of the high-voltage GIS equipment is matched with the reference insulation status data corresponding to each historical operation index interval of the high-voltage GIS equipment preset in the status monitoring database, thereby obtaining the reference insulation status data corresponding to the high-voltage GIS equipment and the expected value of the insulation performance of the equipment in the current state, providing an accurate reference benchmark for real-time monitoring and providing a scientific basis for subsequent real-time monitoring and early warning.

[0029] (3) The present invention can timely discover changes in the insulation performance of the equipment and obtain the insulation performance index of the high-voltage GIS equipment by real-time monitoring and analyzing the insulation status data of the high-voltage GIS equipment. It can quantitatively evaluate the insulation performance status of the equipment and intuitively understand the insulation performance status of the equipment, providing a basis for subsequent early warning and decision-making. By comparing the insulation performance index of the high-voltage GIS equipment with the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database, it can quickly determine whether the insulation status of the equipment is within the normal range, achieve accurate early warning of the insulation status of the equipment, and take measures to repair or maintain it to avoid potential safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0031] Figure 1 It is a schematic diagram of system module connection of the present invention. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] See also Figure 1 As shown, an embodiment of the present invention provides a technical solution: a real-time monitoring and early warning system for the insulation status of high-voltage GIS equipment, including a transmission detection module, a high-voltage GIS equipment historical operation analysis module, an insulation status monitoring module, an insulation status early warning module and a status monitoring database.

[0034] The transmission detection module is used to detect and obtain the network transmission status data of the high-voltage GIS equipment operation data during the transmission process, and analyze the network transmission index to compare it with the network transmission index limit value preset in the status monitoring database. If the network transmission index is less than the preset data transmission index limit value, an early warning prompt is given for the data transmission status of the network.

[0035] The high-voltage GIS equipment historical operation analysis module is used to obtain the historical operation data of the high-voltage GIS equipment, analyze it to obtain the historical operation index of the high-voltage GIS equipment, and match it with the reference insulation status data corresponding to each high-voltage GIS equipment historical operation index interval preset in the status monitoring database, thereby obtaining the reference insulation status data corresponding to the high-voltage GIS equipment.

[0036] The insulation status monitoring module is used to monitor the insulation status data of the high-voltage GIS equipment in real time, and perform comprehensive analysis with the reference insulation status data corresponding to the current high-voltage GIS equipment to obtain the insulation performance index of the high-voltage GIS equipment.

[0037] The insulation status early warning module is used to compare the insulation performance index of the high-voltage GIS equipment with the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database to obtain a comparison result, and finally issue an early warning prompt for the insulation status of the high-voltage GIS equipment based on the comparison result.

[0038] The status monitoring database is used to store preset network transmission index boundary values, preset reference insulation status data corresponding to historical operation index intervals of each high-voltage GIS device, preset insulation performance thresholds of high-voltage GIS equipment, preset transmission bandwidth boundary values, preset transmission reference rates, preset transmission allowable delay times, preset transmission reference data volumes, preset operating reference powers, preset reference insulation resistances, preset allowable leakage currents, preset operating reference temperatures, historical impact indicators corresponding to preset network transmission index unit values, and preset allowable insulation resistances, reference discharge amounts, reference micro-water contents, and reference gas concentrations corresponding to high-voltage GIS equipment.

[0039] The transmission detection module is connected to the high-voltage GIS equipment historical operation analysis module, the high-voltage GIS equipment historical operation analysis module is connected to the insulation status monitoring module, the insulation status monitoring module is connected to the insulation status early warning module, and the status monitoring database is respectively connected to the transmission detection module, the high-voltage GIS equipment historical operation analysis module, the insulation status monitoring module and the insulation status early warning module.

[0040] Specifically, the network transmission data of the high-voltage GIS equipment operation data during the transmission process specifically includes the average transmission bandwidth, average transmission rate, average transmission delay time and average transmission data volume of the network to which the high-voltage GIS equipment operation data belongs during the transmission period.

[0041] It should be explained that the average transmission bandwidth of the network to which the above-mentioned high-voltage GIS equipment operating data belongs during the transmission cycle is obtained by recording all the data volumes transmitted during the transmission cycle, and adding up all the recorded data volumes during the transmission cycle to obtain the total data volume. The average transmission bandwidth can be calculated using the formula "average transmission bandwidth = total data volume / transmission cycle duration". The transmission cycle duration refers to the time interval between the start time and the end time of data transmission, which is obtained by measuring the transmission cycle through a timer. The average transmission rate is obtained by using a network monitoring tool (such as network bandwidth test software) to monitor the data transmission rate during the transmission cycle in real time, and record the transmission rate data at multiple time points. The average transmission rate and average transmission delay are obtained by adding up all the recorded transmission rate data and dividing by the number of records. The delay time can be obtained by regularly sending test data packets within the transmission cycle. The test data packets are special test data packets used to measure the transmission delay. The sending time and receiving time of each test data packet are recorded to obtain the transmission delay time. All the recorded transmission delay data are added and divided by the number of records to obtain the average transmission delay time. The average transmission data volume is obtained by recording the amount of data transmitted each time within the transmission cycle, adding all the recorded transmission data volumes to obtain the total transmission data volume, counting the number of transmissions within the transmission cycle, and then using the formula "average transmission data volume = total transmission data volume / number of transmissions" to obtain the average transmission data volume. In this embodiment, the transmission cycle refers to the entire time interval from the start of data transmission at the sending end to the completion of data reception at the receiving end, which can be randomly arranged according to the actual situation of the network.

[0042] In this embodiment, there is a mutually influencing relationship among the average transmission bandwidth, average transmission rate, average transmission delay time and average transmission data volume of the network to which the high-voltage GIS equipment operation data belongs within the transmission cycle. Specifically, when the average transmission bandwidth of the network is higher, the network can support a higher average transmission rate. A wider bandwidth can accommodate more data for simultaneous transmission, which helps to reduce the waiting time for data, thereby reducing the average transmission delay time. The larger the average transmission bandwidth, the larger the amount of data that can be transmitted per unit time. This means that within the same transmission cycle, the network can transmit more high-voltage GIS equipment operation data. A higher average transmission rate means that data can be transmitted faster through the network, which can reduce the average transmission delay time.

[0043] Specifically, the data transmission indicator and the specific analysis process are as follows:

[0044] The average transmission bandwidth, average transmission rate, average transmission delay time and average transmission data volume of the network to which the high-voltage GIS equipment operation data belongs during the transmission cycle are comprehensively analyzed to obtain the network transmission index. The specific analysis method is as follows:

[0045]

[0046] Where DTI is the network transmission index and e is a natural constant.

[0047] bw is the average transmission bandwidth of the network to which the high-voltage GIS equipment operation data belongs during the transmission cycle, which refers to the amount of data that the network can stably transmit during the transmission cycle of the high-voltage GIS equipment operation data.

[0048] Δbw is the transmission bandwidth limit value preset by the condition monitoring database, which refers to the minimum value of a transmission bandwidth preset by the condition monitoring database.

[0049] tr is the average transmission rate of the network to which the high-voltage GIS equipment operating data belongs during the transmission cycle, which refers to the average speed at which data is transmitted through the network during the transmission cycle of the high-voltage GIS equipment operating data.

[0050] Δtr is a transmission reference rate preset in the condition monitoring database, which refers to a reference value of a transmission rate preset in the condition monitoring database.

[0051] nl is the average transmission delay duration of the network to which the high-voltage GIS equipment operation data belongs during the transmission cycle, which refers to the average time delay experienced by data from the sender to the receiver during the transmission cycle of the high-voltage GIS equipment operation data.

[0052] Δnl is the allowable transmission delay time preset in the condition monitoring database, and refers to the maximum value of a transmission delay time preset in the condition monitoring database.

[0053] DV is the average amount of data transmitted by the network to which the high-voltage GIS equipment operating data belongs during the transmission cycle. It refers to the average amount of data transmitted by the network during the transmission cycle of the high-voltage GIS equipment operating data.

[0054] Δdv is a transmission reference data volume preset in the condition monitoring database, and refers to a reference value of a transmission data volume preset in the condition monitoring database.

[0055] In this embodiment, a lower average transmission bandwidth, or even lower than the preset transmission bandwidth limit, will cause the data transmission channel to become narrower, reduce the data transmission efficiency, and make it impossible for the operation data of the high-voltage GIS equipment to be transmitted to the receiving end in a timely and complete manner, resulting in data loss or delay, thereby affecting the stability and reliability of network transmission indicators; a lower average transmission rate, or even lower than the preset transmission reference rate, means that the data transmission speed is slowed down, resulting in a long data transmission time, which cannot meet the real-time transmission requirements of the high-voltage GIS equipment data; a higher average transmission delay time, or even longer than the preset transmission allowable delay time, seriously affects the real-time and accuracy of the data. For high-voltage GIS equipment, the real-time nature of the data is crucial for rapid response and fault handling. High delay may cause monitoring errors. The response speed of the control system slows down, and even causes misjudgment or missed judgment; when the average transmission data volume is small or large, that is, when the deviation from the preset transmission reference data volume is large, it will lead to unstable and inconsistent data transmission. Too little data may mean data loss or insufficient sampling, while too much data may increase the transmission burden and storage cost. Both of these situations will have an adverse effect on network transmission indicators and reduce their reliability and efficiency. Therefore, through a detailed analysis of each parameter in the network transmission indicator, potential network problems can be discovered and solved in a timely manner to ensure the integrity and accuracy of the transmitted data. At the same time, according to the changes in the transmission parameters, the network resource allocation can be reasonably adjusted to improve resource utilization efficiency. By real-time monitoring of data transmission, problems such as data transmission delay can be discovered, thereby improving the response speed and real-time performance of the system.

[0056] Furthermore, the early warning prompt for the data transmission status of the network may specifically be an early warning prompt for the transmission bandwidth of the network, or an early warning prompt for the transmission rate.

[0057] In this embodiment, the network transmission index is compared with the network transmission index limit value preset in the status monitoring database. If the network transmission index is greater than or equal to the preset data transmission index limit value, it means that the network transmission status is good and can meet the transmission requirements of the high-voltage GIS equipment operation data. Therefore, in this case, there is no need to issue an early warning prompt for the data transmission status of the network. On the contrary, if the network transmission index is less than the preset data transmission index limit value, it indicates that there may be problems with the current network transmission status and it cannot meet the transmission requirements of the high-voltage GIS equipment operation data, or the network is close to the limit of its transmission capacity. In this case, the network data needs to be monitored. The transmission status is warned to remind relevant personnel to take timely measures to improve the network status and avoid interruption or delay of data transmission. The specific warning can be to perform difference processing on the average transmission bandwidth, average transmission rate, average transmission delay time and average transmission data volume of the network to which the above-mentioned high-voltage GIS equipment operation data belongs during the transmission cycle and the corresponding transmission bandwidth limit value, transmission reference rate, transmission allowable delay time and transmission reference data volume. If the deviation is large, the warning information will be notified to the relevant personnel in the form of voice through speech synthesis technology, such as "The network transmission bandwidth is abnormal, please adjust it." or "The network transmission rate is abnormal, please pay attention."

[0058] Specifically, the historical operation data of the high-voltage GIS equipment includes the average operating voltage, average operating current, average insulation resistance, average leakage current and average operating temperature of the high-voltage GIS equipment during the historical operation cycle.

[0059] It needs to be explained that the average operating voltage of the above-mentioned high-voltage GIS equipment in the historical operating cycle is monitored and recorded by the voltage sensor in real time, and then the average value in the historical operating cycle is obtained to obtain the average operating voltage. The average operating current is obtained by monitoring the current of the GIS equipment in real time through the current sensor, and averaging the current data in the historical operating cycle to obtain the average operating current. The average insulation resistance is obtained by measuring the insulation resistance of the GIS equipment with an insulation resistance tester, and calculating the average of the recorded insulation resistance values ​​to obtain the average insulation resistance. The average leakage current is obtained by measuring and recording the leakage current of the GIS equipment through a leakage current monitoring device, and calculating the average value of the recorded leakage current to obtain the average leakage current. The average operating temperature is obtained by monitoring and recording the operating temperature of the GIS equipment through a temperature sensor, and calculating the average value of the recorded operating temperature data to obtain the average operating temperature.

[0060] In this embodiment, there is a complex correlation between the average operating voltage, average operating current, average insulation resistance, average leakage current and average operating temperature of the above-mentioned high-voltage GIS equipment in the historical operating cycle. The average operating voltage and the average operating current usually show a certain correlation. When the voltage increases, the current may increase accordingly to meet the power demand of the equipment. The insulation resistance is a key indicator for measuring the insulation performance of the equipment, and the leakage current is the current that leaks to the ground through the insulation part. Generally, the higher the insulation resistance, the smaller the leakage current. As the temperature increases, the performance of the insulation material may decrease, resulting in a decrease in insulation resistance and an increase in leakage current.

[0061] Furthermore, the specific analysis process of the historical operation index of the high-voltage GIS equipment is as follows:

[0062] The average operating power of the high-voltage GIS equipment during the historical operating cycle is obtained by multiplying the average operating voltage of the high-voltage GIS equipment during the historical operating cycle by the average operating current.

[0063] The average operating power, average insulation resistance, average leakage current, average operating temperature and network transmission index of high-voltage GIS equipment in the historical operating cycle are comprehensively analyzed to obtain the historical operating index of high-voltage GIS equipment. The specific analysis method is as follows:

[0064]

[0065] Where HI is the historical operation index of high-voltage GIS equipment, e is a natural constant, and DTI is a network transmission index.

[0066] p is the average operating power of the high-voltage GIS equipment during the historical operating cycle, which refers to the average operating power of the high-voltage GIS equipment during the historical operating cycle.

[0067] Δp is the operating reference power preset in the condition monitoring database, which refers to a power reference value preset for condition monitoring and performance.

[0068] R is the average insulation resistance of high-voltage GIS equipment during its historical operation cycle, which refers to the average value of the insulation resistance of high-voltage GIS equipment during its historical operation cycle.

[0069] ΔR is the reference insulation resistance preset in the condition monitoring database, which refers to an insulation resistance reference value preset for condition monitoring and insulation performance.

[0070] K is the average leakage current of the high-voltage GIS equipment during its historical operation cycle, which refers to the average value of the leakage current of the high-voltage GIS equipment during its historical operation cycle.

[0071] ΔK is the allowable leakage current preset in the condition monitoring database, which refers to the maximum value of the leakage current preset for condition monitoring and leakage risk assessment.

[0072] W is the average operating temperature of the high-voltage GIS equipment during its historical operating cycle, which refers to the average operating temperature of the high-voltage GIS equipment during its historical operating cycle.

[0073] ΔW is the operating reference temperature preset in the condition monitoring database, which refers to a reference value of an operating temperature preset for condition monitoring and temperature evaluation.

[0074] v1 is the historical impact indicator corresponding to the unit value of the network transmission indicator preset in the condition monitoring database. The historical impact indicator corresponding to the unit value of the network transmission indicator can be extracted in the following manner. For example, the real-time unit value of the network transmission indicator and the historical operation index of the high-voltage GIS equipment are synchronously input into the corresponding relationship of the historical impact indicators stored in the condition monitoring database. The condition monitoring database automatically extracts the historical impact indicator corresponding to the unit value of the network transmission indicator according to the corresponding relationship of the stored historical impact indicators. At the same time, its value range in this example is [0, 1].

[0075] In this embodiment, when the average operating power of the high-voltage GIS equipment in the historical operating cycle is too large or too small, that is, when the deviation from the preset operating reference power is large, it means that the energy consumption efficiency of the equipment may not be high, or the equipment may be in an abnormal working state. This deviation will cause accelerated wear of the equipment and reduced energy efficiency; when the average insulation resistance is small, or even lower than the preset reference insulation resistance, there may be a problem of reduced insulation performance, which will cause safety hazards such as arc discharge or short circuit during the operation of the equipment; when the average leakage current is large, or even greater than the preset allowable leakage current, the equipment may have a leakage problem, which will not only waste energy but also interfere with the normal operation of the equipment; when the average operating temperature is low or high, that is, when the deviation from the preset operating reference temperature is large, too low a temperature may cause the performance of the internal components of the equipment to decline, while too high a temperature may accelerate the aging process of the equipment; low network transmission indicators will cause equipment failures in remote monitoring or data transmission, thereby affecting the overall operating efficiency of the equipment; therefore, by conducting a detailed analysis of each parameter in the historical operation index of the high-voltage GIS equipment, a more comprehensive understanding of the historical operating status of the equipment can be obtained, thereby discovering potential problems and improving the reliability and safety of the equipment.

[0076] Specifically, the insulation status data of the high-voltage GIS equipment includes the average insulation resistance, average discharge capacity, average micro-water content and average gas concentration of the high-voltage GIS equipment during the monitoring period.

[0077] It should be explained that the average insulation resistance of the above-mentioned high-voltage GIS equipment during the monitoring period can be measured by using a megohmmeter to connect the main circuit of the GIS equipment or other parts that need to be measured, recording the insulation resistance value measured each time, and at the end of the monitoring period, calculating the average value of all measured values, thereby obtaining the average insulation resistance. The discharge amount is obtained by partial discharge test. In order to obtain the average discharge amount, partial discharge test can be performed multiple times during the monitoring period, and the average value of these test results is calculated to obtain the average discharge amount; the trace water content is measured by a special trace water measuring instrument. In order to obtain the average trace water content, the trace water content can be measured multiple times during the monitoring period, and the average value of these measured values ​​is calculated. The gas concentration is measured by a gas concentration sensor. In order to obtain the average gas concentration, the gas concentration can be measured multiple times during the monitoring period, and the average value of these measured values ​​is calculated to obtain the average gas concentration. In this embodiment, the monitoring period refers to the time interval for monitoring the insulation status data of the equipment, which is randomly arranged based on the operating characteristics and historical data of the equipment.

[0078] In this embodiment, there is a complex mutual influence relationship between the average insulation resistance, average discharge amount, average micro-water content and average gas concentration of the above-mentioned high-voltage GIS equipment during the monitoring period. The reduction of insulation resistance will lead to an increase in discharge phenomenon, because the decline in insulation performance will increase the possibility of current leakage, thereby triggering discharge. The increase in micro-water content will reduce the insulation performance of the insulating material, because the presence of water molecules will change the molecular structure of the insulating material and increase its conductivity. If the gas concentration is too low, it will lead to a decline in insulation performance.

[0079] Furthermore, the reference insulation status data corresponding to the high-voltage GIS equipment specifically includes the allowable insulation resistance, reference discharge capacity, reference micro-water content and reference gas concentration corresponding to the high-voltage GIS equipment preset in the status monitoring database.

[0080] It should be explained that the allowable insulation resistance, reference discharge amount, reference micro-water content and reference gas concentration corresponding to the high-voltage GIS equipment preset in the above-mentioned condition monitoring database are obtained by matching the historical operation index of the high-voltage GIS equipment with the reference insulation state data corresponding to the historical operation index interval of each high-voltage GIS equipment preset in the condition monitoring database, thereby obtaining the allowable insulation resistance, reference discharge amount, reference micro-water content and reference gas concentration corresponding to the high-voltage GIS equipment. The specific matching process is:

[0081] The historical operation index of the high-voltage GIS equipment is matched with the reference insulation status data corresponding to each historical operation index interval of the high-voltage GIS equipment preset in the status monitoring database, thereby obtaining the reference insulation status data corresponding to the high-voltage GIS equipment.

[0082] In a specific embodiment, the historical operation index of the high-voltage GIS equipment is 1.5, and the historical operation index interval of each high-voltage GIS equipment preset in the status monitoring database is [1, 2). Then the historical operation index interval of the high-voltage GIS equipment is [1, 2). The reference insulation status data corresponding to the high-voltage GIS equipment are: the allowable insulation resistance is 10 megohms, the reference discharge capacity is 300 picocoulombs, the reference micro-water content is 100 parts per million by volume, and the reference gas concentration is 98%.

[0083] In this embodiment, the historical operation index of the high-voltage GIS equipment can truly reflect the performance and status changes of the equipment during actual operation, and can accurately understand the insulation condition of the current equipment. As the operation of the high-voltage GIS equipment changes, the insulation performance of the high-voltage GIS equipment will be affected. Therefore, by matching the historical operation index of the high-voltage GIS equipment, parameters such as the allowable insulation resistance and reference discharge amount can be dynamically adjusted to adapt to the current operating status.

[0084] Specifically, the insulation performance index of the high-voltage GIS equipment is analyzed in the following steps:

[0085] The average insulation resistance, average discharge capacity, average micro-water content, average gas concentration, allowable insulation resistance, reference discharge capacity, reference micro-water content and reference gas concentration of the high-voltage GIS equipment during the monitoring period are comprehensively analyzed to obtain the insulation performance index of the high-voltage GIS equipment. The specific analysis method is as follows:

[0086]

[0087] Where ip is the insulation performance index of high-voltage GIS equipment.

[0088] ri is the average insulation resistance of the high-voltage GIS equipment during the monitoring period, which refers to the average value obtained after multiple insulation resistance measurements are performed on the insulation part of the high-voltage GIS equipment during the monitoring period.

[0089] ki is the average discharge amount of the high-voltage GIS equipment during the monitoring period, which refers to the average discharge amount obtained after multiple discharge measurements of the high-voltage GIS equipment by the partial discharge monitoring equipment during the monitoring period.

[0090] h is the average water content of the high-voltage GIS equipment during the monitoring period, which refers to the average value obtained after multiple water content measurements of the gas inside the high-voltage GIS equipment during the monitoring period.

[0091] c is the average gas concentration of the high-voltage GIS equipment during the monitoring period, which refers to the average value obtained after multiple concentration measurements of the gas inside the high-voltage GIS equipment during the monitoring period.

[0092] Δri is the allowable insulation resistance preset in the condition monitoring database, which refers to a minimum insulation resistance value set for the insulation resistance of high-voltage GIS equipment in the condition monitoring database.

[0093] Δki is the reference discharge capacity preset in the condition monitoring database, which refers to a reference value set for the discharge capacity of high-voltage GIS equipment in the condition monitoring database.

[0094] Δh is the reference micro-water content preset in the condition monitoring database, which refers to a reference value set in the condition monitoring database for the micro-water content of the gas inside the high-pressure GIS equipment.

[0095] Δc is the reference gas concentration preset in the condition monitoring database, which refers to a reference value set in the condition monitoring database for the concentration of gas inside the high-voltage GIS equipment.

[0096] In this embodiment, a smaller average insulation resistance, even when it is smaller than the preset allowable insulation resistance, means that the insulation performance of the device has been damaged and there is a potential risk of insulation failure, which may cause serious failures such as insulation breakdown or short circuit during operation of the device; a larger average discharge amount, even when it is larger than the preset reference discharge amount, also indicates that there may be problems with the insulation performance of the device. The increase in discharge amount may be caused by aging, moisture or defects of the insulating material, all of which may lead to a decrease in the insulation performance of the device; a larger or smaller average micro-water content, that is, when the degree of deviation from the preset reference micro-water content is large, the increase in micro-water content may cause the insulating material to become damp, thereby reducing its insulation performance; and The reduction of trace water content may be due to excessive drying inside the equipment, and may also cause damage to the insulating material; when the average gas concentration is large or small, that is, when the deviation from the preset reference gas concentration is large, the change in gas concentration is caused by gas leakage inside the equipment, improper charging and discharging operations, or gas aging, etc. These changes will lead to a decrease in the insulation performance of the equipment; therefore, through a detailed analysis of the various parameters in the insulation performance indicators of high-voltage GIS equipment, problems with the insulation performance of the equipment can be discovered in time, so that corresponding measures can be taken to repair or maintain it to avoid the occurrence of faults. At the same time, it can ensure that the equipment operates in a good insulation state, thereby improving the reliability and safety of equipment operation.

[0097] Specifically, the insulation performance index of the high-voltage GIS equipment is compared with the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database. The specific comparison process is:

[0098] If the insulation performance index of the high-voltage GIS equipment is greater than or equal to the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database, there is no need to issue an early warning prompt for the insulation status of the high-voltage GIS equipment.

[0099] It needs to be explained that when the insulation performance index of the high-voltage GIS equipment is greater than or equal to the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database, it means that under the current monitoring status, the insulation performance of the equipment is within an acceptable or good range. Therefore, there is no need to immediately issue an early warning for the insulation status of the high-voltage GIS equipment. Although the current insulation performance index meets the standard, it is still necessary to continuously monitor the insulation status of the equipment, because the insulation performance of the equipment may change with the change of operating time. It is necessary to collect the insulation performance index data of the equipment in real time and compare it with the preset threshold to track the insulation status change trend of the equipment.

[0100] On the contrary, if the insulation performance index of the high-voltage GIS equipment is less than the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database, it is necessary to issue an early warning prompt for the insulation status of the high-voltage GIS equipment.

[0101] It needs to be explained that when the insulation performance index of the high-voltage GIS equipment is lower than the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database, it means that the insulation status of the equipment may have problems or there are potential risks. Therefore, it is necessary to give an early warning of the insulation status of the high-voltage GIS equipment. The specific early warning prompt can be set by setting an indicator light on the equipment control panel, using different colors or flashing frequencies to represent different insulation status levels. When the insulation performance index is lower than the threshold, the corresponding indicator light lights up to prompt the operation and maintenance personnel in an intuitive way. After receiving the early warning prompt, the operation and maintenance personnel immediately check the high-voltage GIS equipment to confirm whether there is indeed a problem with the insulation status. According to the inspection results, take appropriate measures to deal with it, such as repairing insulation defects, replacing damaged parts, etc.

[0102] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A real-time monitoring and early warning system for the insulation status of high-voltage GIS equipment, characterized in that: include: The transmission detection module is used to detect and obtain the network transmission status data of the high-voltage GIS equipment operation data during the transmission process, and analyze the network transmission index to compare it with the network transmission index limit value preset in the status monitoring database. If the network transmission index is less than the preset data transmission index limit value, an early warning prompt will be issued for the data transmission status of the network; The high-voltage GIS equipment historical operation analysis module is used to obtain the historical operation data of the high-voltage GIS equipment, analyze it to obtain the historical operation index of the high-voltage GIS equipment, and match it with the reference insulation state data corresponding to the historical operation index interval of each high-voltage GIS equipment preset in the status monitoring database, thereby obtaining the reference insulation state data corresponding to the high-voltage GIS equipment; The insulation status monitoring module is used to monitor the insulation status data of the high-voltage GIS equipment in real time, and conduct a comprehensive analysis with the reference insulation status data corresponding to the current high-voltage GIS equipment to obtain the insulation performance index of the high-voltage GIS equipment; The insulation status early warning module is used to compare the insulation performance index of the high-voltage GIS equipment with the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database to obtain the comparison result, and finally issue an early warning prompt for the insulation status of the high-voltage GIS equipment based on the comparison result.

2. According to claim 1, a real-time monitoring and early warning system for insulation status of high-voltage GIS equipment is characterized by: The network transmission data of the high-voltage GIS equipment operation data during the transmission process specifically includes the average transmission bandwidth, average transmission rate, average transmission delay time and average transmission data volume of the network to which the high-voltage GIS equipment operation data belongs during the transmission period.

3. According to claim 2, a real-time monitoring and early warning system for insulation status of high-voltage GIS equipment is characterized in that: The specific analysis process of the data transmission indicator is as follows: The average transmission bandwidth, average transmission rate, average transmission delay time and average transmission data volume of the network to which the high-voltage GIS equipment operation data belongs during the transmission cycle are comprehensively analyzed to obtain the network transmission indicators.

4. According to claim 1, a real-time monitoring and early warning system for insulation status of high-voltage GIS equipment is characterized by: The early warning prompt for the data transmission status of the network may specifically be an early warning prompt for the transmission bandwidth of the network, or an early warning prompt for the transmission rate.

5. According to claim 1, a real-time monitoring and early warning system for insulation status of high-voltage GIS equipment is characterized in that: The historical operation data of the high-voltage GIS equipment specifically includes the average operating voltage, average operating current, average insulation resistance, average leakage current and average operating temperature of the high-voltage GIS equipment during the historical operation cycle.

6. A real-time monitoring and early warning system for insulation status of high-voltage GIS equipment according to claim 5, characterized in that: The specific analysis process of the historical operation index of high-voltage GIS equipment is as follows: The average operating power of the high-voltage GIS equipment in the historical operation cycle is obtained by multiplying the average operating voltage of the high-voltage GIS equipment in the historical operation cycle by the average operating current; The average operating power, average insulation resistance, average leakage current, average operating temperature and network transmission indicators of high-voltage GIS equipment during its historical operating cycle are comprehensively analyzed to obtain the historical operating index of high-voltage GIS equipment.

7. The real-time monitoring and early warning system for insulation status of high-voltage GIS equipment according to claim 1 is characterized by: The insulation status data of the high-voltage GIS equipment specifically includes the average insulation resistance, average discharge capacity, average micro-water content and average gas concentration of the high-voltage GIS equipment during the monitoring period.

8. The real-time monitoring and early warning system for insulation status of high-voltage GIS equipment according to claim 1 is characterized by: The reference insulation status data corresponding to the high-voltage GIS equipment specifically includes the allowable insulation resistance, reference discharge capacity, reference micro-water content and reference gas concentration corresponding to the high-voltage GIS equipment preset in the status monitoring database.

9. A real-time monitoring and early warning system for insulation status of high-voltage GIS equipment according to claim 8, characterized in that: The insulation performance index of the high-voltage GIS equipment is specifically analyzed as follows: The average insulation resistance, average discharge capacity, average micro-water content, average gas concentration, allowable insulation resistance, reference discharge capacity, reference micro-water content and reference gas concentration of the high-voltage GIS equipment during the monitoring period are comprehensively analyzed to obtain the insulation performance index of the high-voltage GIS equipment. The specific analysis method is as follows: Wherein, ip is the insulation performance index of high-voltage GIS equipment, ri is the average insulation resistance of high-voltage GIS equipment during the monitoring period, ki is the average discharge of high-voltage GIS equipment during the monitoring period, h is the average micro-water content of high-voltage GIS equipment during the monitoring period, c is the average gas concentration of high-voltage GIS equipment during the monitoring period, Δri is the allowable insulation resistance preset in the condition monitoring database, Δki is the reference discharge preset in the condition monitoring database, Δh is the reference micro-water content preset in the condition monitoring database, and Δc is the reference gas concentration preset in the condition monitoring database.

10. The real-time monitoring and early warning system for insulation status of high-voltage GIS equipment according to claim 1, characterized in that: The insulation performance index of the high-voltage GIS equipment is compared with the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database. The specific comparison process is: If the insulation performance index of the high-voltage GIS equipment is greater than or equal to the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database, there is no need to issue an early warning for the insulation status of the high-voltage GIS equipment; On the contrary, if the insulation performance index of the high-voltage GIS equipment is less than the insulation performance threshold of the high-voltage GIS equipment preset in the status monitoring database, it is necessary to issue an early warning prompt for the insulation status of the high-voltage GIS equipment.

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