Method and system for monitoring operation state of capacitor bank

Abstract

The invention discloses a method and system for monitoring the running state of a capacitor bank, and relates to the technical field of capacitors. The method comprises the following steps: acquiring connecting ends among a plurality of capacitors of a capacitor bank, arranging a plurality of sensors at each connecting end, and acquiring a capacitor bank measurement parameter group corresponding to the capacitor bank according to the sensors; acquiring a data change curve corresponding to the connecting end according to the capacitor bank measurement parameter group, and fusing the data change curves to obtain a capacitor bank data change curve corresponding to the capacitor bank; analyzing the capacitor bank data change curve to obtain abnormal capacitor data, and analyzing the abnormal capacitor data to obtain an abnormal capacitor bank operation state; obtaining an abnormal occurrence position and an abnormal parameter type corresponding to the operation state of the abnormal capacitor bank, and generating a corresponding alarm signal; monitoring and maintaining the capacitor bank according to the alarm signal; and the monitoring accuracy of the running state of the capacitor bank is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of capacitors, and specifically to a method and system for monitoring the operating state of a capacitor bank. Background Art

[0002] A capacitor bank is a working group composed of multiple capacitors, and has two forms: series and parallel; in the series case, the withstand voltage is the sum of the two, and the capacitance is one over the sum of the reciprocals of the two; in the parallel case, the withstand voltage is the lowest value among the two, and the capacitance is the sum of the two. Simply put, in series, the withstand voltage increases while the capacitance decreases. In parallel, the withstand voltage remains unchanged while the capacitance increases; the capacitor bank has the characteristics of large capacitance, a large number of units, and high voltage levels; the use of a shunt reactor bank can perform reactive power compensation for the line, and the use of series capacitor compensation technology is one of the effective means to improve the stability limit and economy of the power transmission and transformation network; In the prior art, the capacitor bank has various functions in applications, such as compensating reactive power, filtering, energy storage, etc. During use, when abnormal conditions such as overheating and overvoltage occur in the capacitor bank and there is no timely alarm, it may cause more serious equipment damage and power outage accidents; but usually, when an alarm is issued, it is impossible to accurately judge the type, location, and severity of the fault in a timely manner, which may lead to further expansion of the fault; therefore, in order to solve the above problems, the present invention provides a method and system for monitoring the operating state of a capacitor bank. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a method and system for monitoring the operating state of a capacitor bank; The object of the present invention can be achieved through the following technical solutions: A method for monitoring the operating state of a capacitor bank, the method comprising the following steps: Step S1: Obtain the connection terminals between several capacitors of the capacitor bank, and set several sensors at each connection terminal, and then collect a capacitor bank measurement parameter set corresponding to the capacitor bank according to the sensors; Step S2: Obtain the data change curves corresponding to the connection terminals according to the capacitor bank measurement parameter set, and fuse each data change curve to obtain the capacitor bank data change curve corresponding to the capacitor bank; Step S3: Analyze the capacitor bank data change curve to obtain abnormal capacitor data, and analyze the abnormal capacitor data to obtain the operating state of the abnormal capacitor bank; Step S4: Obtain the abnormal occurrence location and abnormal parameter type corresponding to the operating state of the abnormal capacitor bank, and generate a corresponding alarm signal; Step S5: Monitor the capacitor bank according to the alarm signal.

[0004] Further, the process of obtaining the measurement parameter group of the capacitor bank includes: Number the connection terminals between each capacitor according to the incoming line terminal of the capacitor bank, obtain the measurement parameters of each sensor corresponding to the number, obtain the corresponding operating state of the capacitor bank, collect the capacitor data of each connection terminal in the corresponding operating state according to the measurement parameters, and obtain the corresponding collection time point; The measurement parameters include voltage, current, temperature, and power factor; the capacitor data includes voltage data, current data, temperature data, and power factor data; the measurement parameter group of the capacitor bank includes a voltage data group, a current data group, a temperature data group, and a power factor data group; Wirelessly communicate and connect the sensors corresponding to the same measurement parameter of each connection terminal, and integrate the capacitor data collected by the same measurement parameter according to the operating state to generate a measurement parameter group of the capacitor bank corresponding to the measurement parameter.

[0005] Further, the process of obtaining the data change curve includes: Obtain the capacitor data collected by each connection terminal corresponding to the measurement parameter according to the preset collection period according to the collection time point, and perform data connection and integration with the collection time point to generate a capacitor data set corresponding to the measurement parameter of the connection terminal; Establish a two-dimensional rectangular coordinate system with the collection time point in each capacitor data set as the abscissa and the capacitor data as the ordinate, and then obtain the data change curves of each connection terminal corresponding to the measurement parameter in different operating states.

[0006] Further, the process of obtaining the data change curve of the capacitor bank includes: Set the threshold range of the measurement parameter corresponding to the operating state, and mark it on each data change curve, and then fuse the data change curves of each measurement parameter corresponding to the operating state of the measurement parameter group of the capacitor bank to obtain the first data change curve of the capacitor bank corresponding to the measurement parameter; Obtain the capacitor data corresponding to each collection time point of the first data change curve of the capacitor bank, and compare it with the threshold range. If it is within the threshold range, integrate the corresponding capacitor data to obtain the average value corresponding to the collection node, which is marked as the average capacitor data; otherwise, mark the corresponding capacitor data as abnormal capacitor data; Connect the average capacitor data corresponding to the collection time point to generate a data change curve of the capacitor bank with the collection time point as the abscissa and the average capacitor data as the ordinate.

[0007] Further, the process of obtaining the abnormal capacitor data includes: Update the data change curve of the capacitor bank in real time according to the data change curve, and compare the average capacitor data corresponding to each acquisition time point in the data change curve of the capacitor bank updated in real time with the threshold range: If the average capacitor data is within the threshold range, mark the corresponding average capacitor data as normal average capacitor data; Otherwise, mark the average capacitor data as abnormal average capacitor data, obtain the respective data change curves corresponding to the abnormal average capacitor data, and obtain the capacitor data corresponding to each data change curve according to the acquisition time point corresponding to the abnormal average capacitor data, and mark it as abnormal capacitor data.

[0008] Furthermore, the process of obtaining the operating state of the abnormal capacitor bank includes: Compare the abnormal capacitor data with the threshold range: If the abnormal capacitor data is within the threshold range, mark the corresponding abnormal capacitor data as unconfirmed abnormal capacitor data; otherwise, mark the corresponding abnormal capacitor data as confirmed abnormal capacitor data; Obtain the quantities of unconfirmed abnormal capacitor data and confirmed abnormal capacitor data corresponding to the abnormal average capacitor data at the acquisition time point, and mark them as the unconfirmed quantity and the confirmed quantity; through the formula Obtain the abnormal confirmation value of the capacitor bank corresponding to the acquisition time point ; where t represents the acquisition time point, Q t represents the confirmed quantity corresponding to the abnormal average capacitor data at the acquisition time point; WQ t represents the unconfirmed quantity corresponding to the abnormal average capacitor data at the acquisition time point; If the abnormal confirmation value is greater than 0, mark the corresponding operating state as the first-class abnormal capacitor bank operating state; otherwise, mark the corresponding operating state as the second-class abnormal capacitor bank operating state; Merge the first-class abnormal capacitor bank operating state and the second-class abnormal capacitor bank operating state to generate the abnormal capacitor bank operating state.

[0009] Furthermore, the process of determining the abnormal occurrence location, abnormal parameter type, and sum includes: Obtain the confirmed abnormal capacitor data corresponding to the operating state of the abnormal capacitor bank, and obtain the numbers of the connection terminals corresponding to each confirmed abnormal capacitor data, and mark them as the abnormal occurrence location; furthermore, obtain the measurement parameters corresponding to the confirmed abnormal capacitor data, and mark them as the abnormal parameter type; Generate a first-class abnormal alarm signal and a second-class alarm signal corresponding to the first-class abnormal capacitor bank operating state and the second-class abnormal capacitor bank operating state according to the operating state of the abnormal capacitor bank.

[0010] Further, the process of monitoring the capacitor bank includes: Obtain an alarm signal, obtain the corresponding abnormal occurrence location and abnormal parameter type according to the alarm signal, and then monitor and repair the capacitor bank according to the abnormal occurrence location and abnormal parameter type.

[0011] Further, the system includes the following modules: Acquisition module: Obtain the connection terminals between several capacitors of the capacitor bank, and set several sensors at each connection terminal, and then collect the corresponding capacitor bank measurement parameter group of the capacitor bank according to the sensors; Curve generation module: Obtain the data change curve corresponding to the connection terminal according to the capacitor bank measurement parameter group, and fuse each data change curve to obtain the capacitor bank data change curve corresponding to the capacitor bank; Operating state analysis module: Analyze the capacitor bank data change curve to obtain abnormal capacitor data, and analyze the abnormal capacitor data to obtain the operating state of the abnormal capacitor bank; Early warning module: Obtain the abnormal occurrence location and abnormal parameter type corresponding to the operating state of the abnormal capacitor bank, and generate a corresponding alarm signal; Monitoring module: Monitor and repair the capacitor bank according to the alarm signal.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention obtains the connection terminals between several capacitors of the capacitor bank, sets several sensors at each connection terminal, and then collects the corresponding capacitor bank measurement parameter group of the capacitor bank according to the sensors; obtains the data change curve corresponding to the connection terminal according to the capacitor bank measurement parameter group, and fuses each data change curve to obtain the capacitor bank data change curve corresponding to the capacitor bank; analyzes the capacitor bank data change curve to obtain abnormal capacitor data, and analyzes the abnormal capacitor data to obtain the operating state of the abnormal capacitor bank; obtains the abnormal occurrence location and abnormal parameter type corresponding to the operating state of the abnormal capacitor bank, and generates a corresponding alarm signal; monitors and repairs the capacitor bank according to the alarm signal; effectively improves the accuracy of monitoring the operating state of the capacitor bank. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0014] Figure 1 It is a flowchart of the present invention.

[0015] Figure 2This is the schematic diagram of the present invention. Detailed implementation manners

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0017] As Figure 1 shown, a method for monitoring the operating state of a capacitor bank, the method includes the following steps: Step S1: Obtain the connection terminals between several capacitors of the capacitor bank, and set several sensors at each connection terminal, and then collect the capacitor bank measurement parameter group corresponding to the capacitor bank according to the sensors; Step S2: Obtain the data change curve corresponding to the connection terminal according to the capacitor bank measurement parameter group, and fuse each data change curve to obtain the capacitor bank data change curve corresponding to the capacitor bank; Step S3: Analyze the capacitor bank data change curve to obtain abnormal capacitor data, and analyze the abnormal capacitor data to obtain the operating state of the abnormal capacitor bank; Step S4: Obtain the abnormal occurrence position and abnormal parameter type corresponding to the operating state of the abnormal capacitor bank; and generate a corresponding alarm signal; Step S5: Monitor and repair the capacitor bank according to the alarm signal. Embodiment

[0018] This embodiment is a further limitation of Embodiment 1, and the step S1 is implemented through the following process: The process of obtaining the capacitor bank measurement parameter group includes: Number the connection terminals between each capacitor according to the incoming line terminal of the capacitor bank, denoted as i, where i = 1, 2,..., j, and j is a positive integer; and obtain the measurement parameters of each sensor corresponding to the number, and the measurement parameters include voltage, current, temperature and power factor; Obtain the operating state corresponding to the capacitor bank, and the operating state includes a charging state and a discharging state; collect the capacitor data of each connection terminal in the corresponding operating state according to the measurement parameters, and obtain the corresponding acquisition time point; the capacitor data includes voltage data, current data, temperature data and power factor data; Wirelessly communicate and connect sensors with the same measurement parameters at each connection end, and integrate the capacitor data collected with the same measurement parameters according to the operating state to generate a capacitor bank measurement parameter group corresponding to the measurement parameters; the capacitor bank measurement parameter group includes a voltage data group, a current data group, a temperature data group, and a power factor data group; In the above embodiment, it should be further noted that the capacitance of the capacitor is fixed. Therefore, the capacitance of the capacitor bank is also fixed. Furthermore, when collecting the current, voltage, temperature, and power factor of the capacitor bank, usually, data is collected from the incoming and outgoing ends of the capacitor bank. This process of data collection may cause limitations in data collection and thus inaccuracy. Therefore, data is collected from each connection end of the capacitor bank to improve the accuracy of the data. Embodiment

[0019] This embodiment is a further limitation of Embodiment 1, and the step S2 is implemented through the following process: The process of obtaining the data change curve includes: Obtain the capacitor data collected according to the acquisition time point of the measurement parameters corresponding to each connection end according to a preset acquisition period, and perform data connection and integration with the acquisition time point to generate a capacitor data set corresponding to the measurement parameters of the connection end; Establish a two-dimensional rectangular coordinate system with the acquisition time point in each capacitor data set as the abscissa and the capacitor data as the ordinate, and then obtain the data change curves of the measurement parameters corresponding to each connection end in different operating states; The process of obtaining the data change curve of the capacitor bank includes: Set the threshold range of the measurement parameters corresponding to the operating state, and mark it on each data change curve. Then, fuse the data change curves of the measurement parameters of the capacitor bank corresponding to the operating state to obtain the first capacitor bank data change curve corresponding to the measurement parameters of the capacitor bank; Obtain the capacitor data corresponding to each acquisition time point of the first capacitor bank data change curve, and compare it with the threshold range. If it is within the threshold range, integrate the corresponding capacitor data to obtain the average value corresponding to the acquisition node, which is marked as the average capacitor data; otherwise, mark the corresponding capacitor data as abnormal capacitor data; Connect the average capacitor data corresponding to the acquisition time point to generate a capacitor bank data change curve with the acquisition time point as the abscissa and the average capacitor data as the ordinate; In the above embodiment, it should be further noted that during the monitoring process of the operating state of the capacitor bank, usually, the threshold range is set to directly obtain abnormal data, and then the abnormal operating state is obtained. This method has contingency and data inaccuracy. Embodiment

[0020] This embodiment further limits Embodiment 1, and the step S3 is implemented through the following process: The process of obtaining the abnormal capacitor data includes: According to the data change curve, the data change curve of the capacitor bank is updated in real time, and the average capacitor data corresponding to each acquisition time point in the real-time updated data change curve of the capacitor bank is compared with the threshold range: If the average capacitor data is within the threshold range, the corresponding average capacitor data is marked as normal average capacitor data; Otherwise, the average capacitor data is marked as abnormal average capacitor data, and the data change curves corresponding to the abnormal average capacitor data are obtained. According to the acquisition time point corresponding to the abnormal average capacitor data, the capacitor data corresponding to each data change curve is obtained and marked as abnormal capacitor data; The process of obtaining the abnormal operating state of the capacitor bank includes: Compare the abnormal capacitor data with the threshold range: If the abnormal capacitor data is within the threshold range, the corresponding abnormal capacitor data is marked as unconfirmed abnormal capacitor data; otherwise, the corresponding abnormal capacitor data is marked as confirmed abnormal capacitor data; Obtain the number of unconfirmed abnormal capacitor data and confirmed abnormal capacitor data corresponding to the abnormal average capacitor data at the acquisition time point, and mark them as the unconfirmed number and the confirmed number; through the formula Obtain the abnormal confirmation value of the capacitor bank corresponding to the acquisition time point ; where t represents the acquisition time point, Q t represents the confirmed number corresponding to the abnormal average capacitor data at the acquisition time point; WQ t represents the unconfirmed number corresponding to the abnormal average capacitor data at the acquisition time point; If the abnormal confirmation value is greater than 0, the corresponding operating state is marked as the first-class abnormal operating state of the capacitor bank; otherwise, the corresponding operating state is marked as the second-class abnormal operating state of the capacitor bank; Merge the first-class abnormal operating state of the capacitor bank and the second-class abnormal operating state of the capacitor bank to generate the abnormal operating state of the capacitor bank; In the above embodiment, it should be further noted that the capacitor bank is composed of several capacitors. The abnormal operating state of the capacitor bank may be caused by the abnormality of a certain capacitor data. Therefore, the abnormal operating state of the capacitor bank is obtained through the above method, and the abnormal capacitor data corresponding to the abnormal operating state is obtained. Embodiment

[0021] This embodiment further limits Embodiment 1, and the step S4 is implemented through the following process: The process of determining the abnormal occurrence location, abnormal parameter type, and sum includes: Obtain the confirmed abnormal capacitor data corresponding to the operating state of the abnormal capacitor bank, and obtain the numbers of the connection terminals corresponding to each piece of confirmed abnormal capacitor data, which are marked as the abnormal occurrence locations; furthermore, obtain the measurement parameters corresponding to the confirmed abnormal capacitor data and mark them as the abnormal parameter types; According to the operating state of the abnormal capacitor bank, generate a first-class abnormal alarm signal and a second-class alarm signal corresponding to the first-class abnormal capacitor bank operating state and the second-class abnormal capacitor bank operating state. Embodiment

[0022] This embodiment further limits Embodiment 1, and the step S5 is implemented through the following process: The process of monitoring the capacitor bank includes: Obtain the alarm signal, obtain the corresponding abnormal occurrence location and abnormal parameter type according to the alarm signal, and then monitor and repair the capacitor bank according to the abnormal occurrence location and abnormal parameter type. Embodiment

[0023] As Figure 2 shown, the present invention also provides a system for monitoring the operating state of a capacitor bank; The system includes the following modules: Acquisition module: Obtain the connection terminals between several capacitors of the capacitor bank, set several sensors at each connection terminal, and then acquire the capacitor bank measurement parameter group corresponding to the capacitor bank according to the sensors; Curve generation module: Obtain the data change curve corresponding to the connection terminal according to the capacitor bank measurement parameter group, and fuse each data change curve to obtain the capacitor bank data change curve corresponding to the capacitor bank; Operating state analysis module: Analyze the capacitor bank data change curve to obtain abnormal capacitor data, and analyze the abnormal capacitor data to obtain the operating state of the abnormal capacitor bank; Early warning module: Obtain the abnormal occurrence location and abnormal parameter type corresponding to the operating state of the abnormal capacitor bank, and generate a corresponding alarm signal; Monitoring module: Monitor and repair the capacitor bank according to the alarm signal.

[0024] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below in combination with the accompanying drawings and specific embodiments; it should be understood that the specific embodiments described herein are only intended to explain the present application, rather than limiting the present application; for those skilled in the art, the present application can be implemented without some of these specific details; the above description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0025] The above embodiments are only used to illustrate the technical methods of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical methods of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A method for monitoring the operating status of a capacitor bank, characterized in that: The method comprises the following steps: Step S1: obtaining connection ends between a plurality of capacitors in a capacitor group, and setting a plurality of sensors at each connection end, and then collecting a capacitor group measurement parameter group corresponding to the capacitor group according to the sensors; Step S2: acquiring a data change curve corresponding to the connection end according to the capacitor bank measurement parameter group, and fusing each data change curve to obtain a capacitor bank data change curve corresponding to the capacitor bank; Step S3: Analyze the capacitor bank data change curve to obtain abnormal capacitor data, and analyze the abnormal capacitor data to obtain the abnormal capacitor bank operation status; Step S4: obtaining the abnormal occurrence location and abnormal parameter type corresponding to the abnormal capacitor bank operation state, and generating a corresponding alarm signal; Step S5: Monitor and maintain the capacitor bank according to the alarm signal.

2. A method for monitoring the operating status of a capacitor bank according to claim 1, characterized in that: The process of obtaining the capacitor bank measurement parameter group includes: The connection terminals between the capacitors are numbered according to the incoming terminals of the capacitor group, and the measurement parameters of the sensors corresponding to the numbers are obtained to obtain the corresponding operating status of the capacitor group. The capacitor data of each connection terminal in the corresponding operating status is collected according to the measurement parameters, and the corresponding collection time point is obtained; Sensors with the same measurement parameters at each connection end are wirelessly connected, and capacitor data collected with the same measurement parameters are integrated according to the operating status to generate a capacitor group measurement parameter group corresponding to the measurement parameters.

3. A method for monitoring the operating status of a capacitor bank according to claim 2, characterized in that: The process of obtaining the data change curve includes: According to the preset acquisition cycle, the capacitor data corresponding to the measurement parameters of each connection end is acquired according to the acquisition time point, and the data is connected and integrated with the acquisition time point to generate a capacitor data set of the measurement parameters corresponding to the connection end; A two-dimensional rectangular coordinate system is established with the acquisition time point of each capacitor data set as the horizontal coordinate and the capacitor data as the vertical coordinate, so as to obtain the data change curve of the corresponding measurement parameters of each connection end in different operating states.

4. A method for monitoring the operating status of a capacitor bank according to claim 3, characterized in that: The process of acquiring the capacitor bank data variation curve includes: Setting a threshold range of the measurement parameter corresponding to the operating state and marking it on each data change curve, and then fusing each data change curve corresponding to the operating state of the capacitor bank measurement parameter group to obtain a first capacitor bank data change curve of the measurement parameter corresponding to the capacitor bank; The capacitor data corresponding to each acquisition time point of the data change curve of the first capacitor group is obtained, and compared with the threshold range. If it is within the threshold range, the corresponding capacitor data is integrated to obtain the average corresponding to the acquisition node, and marked as average capacitor data; otherwise, the corresponding capacitor data is marked as abnormal capacitor data; The average capacitor data corresponding to the acquisition time points are connected in a curve to generate a capacitor group data variation curve with the acquisition time points as the abscissa and the average capacitor data as the ordinate.

5. A method for monitoring the operating status of a capacitor bank according to claim 4, characterized in that: The process of acquiring abnormal capacitor data includes: The capacitor bank data change curve is updated in real time according to the data change curve, and the average capacitor data corresponding to each acquisition time point in the real-time updated capacitor bank data change curve is compared with the threshold range: If the average capacitor data is within the threshold range, the corresponding average capacitor data is marked as normal average capacitor data; Otherwise, the average capacitor data is marked as abnormal average capacitor data, and each data change curve corresponding to the abnormal average capacitor data is obtained. The capacitor data corresponding to each data change curve is obtained according to the collection time point corresponding to the abnormal average capacitor data and marked as abnormal capacitor data.

6. A method for monitoring the operating status of a capacitor bank according to claim 5, characterized in that: The process of obtaining the abnormal capacitor bank operating status includes: Compare abnormal capacitor data to threshold ranges: If the abnormal capacitor data exists within the threshold range, the corresponding abnormal capacitor data is marked as unconfirmed abnormal capacitor data; otherwise, the corresponding abnormal capacitor data is marked as confirmed abnormal capacitor data; Obtain the number of unconfirmed abnormal capacitor data and confirmed abnormal capacitor data corresponding to the abnormal average capacitor data at the acquisition time point, marked as unconfirmed number and confirmed number; through the formula Obtain the abnormal confirmation value corresponding to the capacitor bank at the acquisition time point ; where t represents the acquisition time point, Q t It is expressed as the number of confirmations corresponding to the abnormal average capacitor data at the acquisition time point; WQ t It is expressed as the unconfirmed number corresponding to the abnormal average capacitor data at the acquisition time point; If the abnormal confirmation value is greater than 0, the corresponding operating state is marked as a first-class abnormal capacitor bank operating state; otherwise, the corresponding operating state is marked as a second-class abnormal capacitor bank operating state; The first-class abnormal capacitor bank operation state and the second-class abnormal capacitor bank operation state are combined to generate the abnormal capacitor bank operation state.

7. A method for monitoring the operating status of a capacitor bank according to claim 6, characterized in that: The process of determining the abnormal occurrence location and the abnormal parameter type includes: Acquire the confirmed abnormal capacitor data corresponding to the operating state of the abnormal capacitor group, and obtain the number of the connection terminal corresponding to each confirmed abnormal capacitor data, and mark it as the abnormal occurrence location; then obtain the measurement parameters corresponding to the confirmed abnormal capacitor data, and mark it as the abnormal parameter type; According to the abnormal capacitor group operation state, the first-class abnormal capacitor group operation state and the second-class abnormal capacitor group operation state are correspondingly generated into a first-class abnormal alarm signal and a second-class alarm signal.

8. A method for monitoring the operating status of a capacitor bank according to claim 7, characterized in that: The process of monitoring the capacitor bank includes: Acquire an alarm signal, acquire the corresponding abnormality location and abnormal parameter type according to the alarm signal, and then monitor and maintain the capacitor bank according to the abnormality location and abnormal parameter type.

9. A system for monitoring the operating status of a capacitor bank, applied to a method for monitoring the operating status of a capacitor bank as claimed in any one of claims 1 to 8, characterized in that: The system includes the following modules: Acquisition module: obtaining connection ends between several capacitors of the capacitor group, and setting several sensors at each connection end, and then acquiring a capacitor group measurement parameter group corresponding to the capacitor group according to the sensors; Curve generation module: obtains the data change curve corresponding to the connection end according to the capacitor group measurement parameter group, and fuses each data change curve to obtain the capacitor group data change curve corresponding to the capacitor group; Operation status analysis module: analyzes the data change curve of the capacitor group to obtain abnormal capacitor data, and analyzes the abnormal capacitor data to obtain the operation status of the abnormal capacitor group; Early warning module: obtains the abnormal location and abnormal parameter type corresponding to the abnormal capacitor bank operation status, and generates a corresponding alarm signal; Monitoring module: monitors and maintains the capacitor bank based on alarm signals.

Images