A method and system for monitoring the operating state of a capacitor bank

Abstract

The application discloses a kind of methods and systems for monitoring capacitor bank operating state, it is related to capacitor technical field;The application obtains the connecting end between several capacitors of capacitor bank, and sets several sensors at each connecting end, and then according to sensor acquisition capacitor bank corresponding capacitor bank measurement parameter group;According to capacitor bank measurement parameter group, the data change curve corresponding to connecting end is obtained, and each data change curve is fused to obtain the capacitor bank data change curve corresponding to capacitor bank;Capacitor bank data change curve is analyzed to obtain abnormal capacitor data, and abnormal capacitor data is analyzed to obtain abnormal capacitor bank operating state;Abnormal occurrence position and abnormal parameter type corresponding to abnormal capacitor bank operating state are obtained, and corresponding alarm signal is generated;Capacitor bank is monitored and repaired according to alarm signal;Effectively improve capacitor bank operating state monitoring accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of capacitors, in particular to a method and system for monitoring the operating state of a capacitor bank. BACKGROUND

[0002] A capacitor bank is a working group composed of multiple capacitors, and has two forms of series connection and parallel connection. In the case of series connection, the withstand voltage is the sum of the two, and the capacity is the reciprocal sum of the two and one. In the case of parallel connection, the withstand voltage is the lowest value of the two, and the capacity is the sum of the two. In simple terms, the series connection increases the withstand voltage and reduces the capacity. The parallel connection does not change the withstand voltage, and the capacity increases. The capacitor bank has the characteristics of large capacity, large number of units, and high voltage grade. The use of shunt reactor banks can compensate for the reactive power of 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 network.

[0003] In the prior art, the capacitor bank has multiple functions in application, such as compensating for reactive power, filtering, energy storage, etc. In the use process, when the capacitor bank has abnormal conditions such as overheating and overvoltage, there is no timely alarm, which may cause more serious equipment damage and power failure accidents. However, under normal circumstances, the alarm cannot accurately determine the fault type, location and severity in time, which may further expand the fault. Therefore, in order to solve the above problems, the present application provides a method and system for monitoring the operating state of a capacitor bank. SUMMARY

[0004] In order to solve the above technical problems, the present application provides a method and system for monitoring the operating state of a capacitor bank.

[0005] The purpose of the present application can be achieved by the following technical scheme: a method for monitoring the operating state of a capacitor bank, the method comprising the following steps:

[0006] Step S1: obtaining the connection ends between the plurality of capacitors of the capacitor bank, and setting a plurality of sensors at each connection end, and then acquiring a capacitor bank measurement parameter group corresponding to the capacitor bank according to the sensors;

[0007] Step S2: obtaining the data change curve corresponding to the connection end according to the capacitor bank measurement parameter group, fusing each data change curve to obtain a capacitor bank data change curve corresponding to the capacitor bank;

[0008] Step S3: analyzing the capacitor bank data change curve to obtain abnormal capacitor data, and analyzing the abnormal capacitor data to obtain the abnormal operating state of the capacitor bank;

[0009] Step S4: Obtain the abnormal occurrence position and abnormal parameter type corresponding to the abnormal capacitor bank operation state, and generate a corresponding alarm signal;

[0010] Step S5: Monitor the capacitor bank according to the alarm signal.

[0011] Further, the acquisition process of the capacitor bank measurement parameter set comprises:

[0012] According to the incoming line end of the capacitor bank, the connection ends between each capacitor are numbered, and the measurement parameters corresponding to each sensor are obtained. The running state corresponding to the capacitor bank is obtained, the capacitor data of each connection end in the corresponding running state is collected according to the measurement parameters, and the corresponding collection time point is obtained;

[0013] The measurement parameters include voltage, current, temperature and power factor; the capacitor data includes voltage data, current data, temperature data and power factor data; and the capacitor bank measurement parameter set includes voltage data set, current data set, temperature data set and power factor data set.

[0014] The sensors corresponding to the same measurement parameters of each connection end are connected in wireless communication, and the capacitor data collected according to the same measurement parameters is integrated according to the running state to generate the capacitor bank measurement parameter set corresponding to the measurement parameters.

[0015] Further, the acquisition process of the data change curve comprises:

[0016] According to the preset collection period, the capacitor data corresponding to the measurement parameters of each connection end collected according to the collection time point is obtained, and the capacitor data set of the measurement parameters corresponding to each connection end is integrated with the collection time point to generate the data connection.

[0017] Taking the collection time point in each capacitor data set as the abscissa and the capacitor data as the ordinate, a two-dimensional rectangular coordinate system is established, and then the data change curve of the measurement parameters corresponding to each connection end in different running states is obtained.

[0018] Further, the acquisition process of the capacitor bank data change curve comprises:

[0019] The threshold range of the measurement parameters corresponding to the running state is set, and is marked on each data change curve, and then the first capacitor bank data change curve of the measurement parameters corresponding to the capacitor bank is obtained by fusing each data change curve corresponding to the running state of the capacitor bank measurement parameter set.

[0020] The capacitor data corresponding to each collection time point of the first capacitor bank data change curve is acquired and compared with the threshold range, if there is within the threshold range, the corresponding capacitor data is integrated to acquire the average number corresponding to the collection node, which is marked as average capacitor data; otherwise, the corresponding capacitor data is marked as abnormal capacitor data;

[0021] The average capacitor data corresponding to the collection time point is connected to generate a capacitor bank data change curve with the collection time point as the horizontal coordinate and the average capacitor data as the vertical coordinate.

[0022] Further, the acquisition process of the abnormal capacitor data includes:

[0023] According to the data change curve, the capacitor bank data change curve is updated in real time, and the average capacitor data corresponding to each collection time point in the real-time updated capacitor bank data change curve is compared with the threshold range:

[0024] If the average capacitor data exists in the threshold range, the corresponding average capacitor data is marked as normal average capacitor data;

[0025] 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 acquired, the capacitor data corresponding to each data change curve is acquired according to the collection time point corresponding to the abnormal average capacitor data, and is marked as abnormal capacitor data.

[0026] Further, the acquisition process of the abnormal capacitor bank running state includes:

[0027] The abnormal capacitor data is compared with the threshold range:

[0028] If the abnormal capacitor data exists in 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;

[0029] The number of unconfirmed abnormal capacitor data and confirmed abnormal capacitor data corresponding to the abnormal average capacitor data of the collection time point is acquired, which is marked as unconfirmed number and confirmed number; through the formula The abnormal confirmation value corresponding to the collection time point of the capacitor bank is acquired ; wherein t represents the collection time point, Q t represents the confirmed number corresponding to the collection time point of the abnormal average capacitor data; WQ t represents the unconfirmed number corresponding to the collection time point of the abnormal average capacitor data;

[0030] If the abnormality confirmation value is greater than 0, the corresponding operation state is marked as a first abnormal capacitor group operation state; otherwise, the corresponding operation state is marked as a second abnormal capacitor group operation state.

[0031] The first abnormal capacitor group operation state and the second abnormal capacitor group operation state are combined to generate an abnormal capacitor group operation state.

[0032] Further, the determination process of the abnormal occurrence position and the abnormal parameter type comprises:

[0033] The abnormal capacitor data corresponding to the abnormal capacitor group operation state is obtained, and the number of the connection end corresponding to each abnormal capacitor data is obtained and marked as an abnormal occurrence position. Then, the measurement parameter corresponding to the abnormal capacitor data is obtained and marked as an abnormal parameter type.

[0034] According to the abnormal capacitor group operation state, the first abnormal capacitor group operation state and the second abnormal capacitor group operation state are correspondingly generated to generate a first abnormal alarm signal and a second abnormal alarm signal.

[0035] Further, the process of monitoring the capacitor group comprises:

[0036] The alarm signal is obtained, the corresponding abnormal occurrence position and abnormal parameter type are obtained according to the alarm signal, and then the capacitor group is monitored and repaired according to the abnormal occurrence position and the abnormal parameter type.

[0037] Further, the system comprises the following modules:

[0038] The acquisition module obtains the connection end between the plurality of capacitors of the capacitor group, and sets a plurality of sensors at each connection end. Then, the capacitor group measurement parameter group corresponding to the capacitor group is collected according to the sensors.

[0039] The 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.

[0040] The operation state analysis module analyzes the capacitor group data change curve to obtain abnormal capacitor data, and analyzes the abnormal capacitor data to obtain an abnormal capacitor group operation state.

[0041] The early warning module obtains the abnormal occurrence position and the abnormal parameter type corresponding to the abnormal capacitor group operation state, and generates a corresponding alarm signal.

[0042] The monitoring module monitors and repairs the capacitor group according to the alarm signal.

[0043] Compared with the prior art, the beneficial effects of the present application are: the present application obtains the connection terminals between the plurality of capacitors of the capacitor bank, sets a plurality of sensors at each connection terminal, and then collects the capacitor bank measurement parameter group corresponding to 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, 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 abnormal capacitor bank running state; obtains the abnormal occurrence position and abnormal parameter type corresponding to the abnormal capacitor bank running state, and generates the corresponding alarm signal; monitors and maintains the capacitor bank according to the alarm signal; and effectively improves the capacitor bank running state monitoring accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0045] Figure 1 Flowchart of the present application.

[0046] Figure 2 Principle diagram of the present application. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. EMBODIMENT

[0048] As shown in Figure 1 A method for monitoring the running state of a capacitor bank, the method comprising the following steps:

[0049] Step S1: obtaining the connection terminals between the plurality of capacitors of the capacitor bank, and setting a plurality of sensors at each connection terminal, and then collecting the capacitor bank measurement parameter group corresponding to the capacitor bank according to the sensors;

[0050] Step S2: obtaining the data change curve corresponding to the connection terminal according to the capacitor bank measurement parameter group, fusing each data change curve to obtain the capacitor bank data change curve corresponding to the capacitor bank;

[0051] Step S3: 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;

[0052] Step S4: obtaining an abnormal occurrence position and an abnormal parameter type corresponding to the abnormal capacitor bank operation state; and generating a corresponding alarm signal;

[0053] Step S5: monitoring and repairing the capacitor bank according to the alarm signal. Embodiment

[0054] The step S1 is implemented by the following process in this embodiment which is a further limitation of embodiment 1.

[0055] The process of obtaining the capacitor bank measurement parameter set includes:

[0056] The connection ends between the capacitors are numbered according to the incoming line end of the capacitor bank, denoted as i, where i = 1, 2,..., j, and j is a positive integer; and the measurement parameters of the numbered sensors are obtained, including voltage, current, temperature, and power factor;

[0057] The operation state corresponding to the capacitor bank is obtained, including the charging state and the discharging state; the capacitor data of each connection end in the corresponding operation state is collected according to the measurement parameters, and the corresponding collection time point is obtained; the capacitor data includes voltage data, current data, temperature data, and power factor data;

[0058] The sensors of the same measurement parameters of each connection end are connected by wireless communication, and the capacitor data collected by the same measurement parameters are integrated according to the operation state to generate the capacitor bank measurement parameter set corresponding to the measurement parameters; the capacitor bank measurement parameter set includes voltage data set, current data set, temperature data set, and power factor data set;

[0059] In the above embodiment, it needs to be further explained that the capacitance of the capacitor is fixed, so the capacitance of the capacitor bank is also fixed, and then the current, voltage, temperature, and power factor of the capacitor bank are collected. In general, the data of the incoming line end and the outgoing line end of the capacitor bank are collected, which may cause data collection limitations and inaccuracy; therefore, the connection ends of the capacitor bank are collected to improve the accuracy of the data. Embodiment

[0060] This embodiment is a further limitation of embodiment 1, and the step S2 is implemented by the following process.

[0061] The process of obtaining the data change curve includes:

[0062] According to the preset acquisition cycle, the measurement parameters corresponding to each connection end are acquired, capacitor data acquired according to the acquisition time point is connected with the acquisition time point to generate a capacitor data set of the measurement parameters corresponding to the connection end;

[0063] A two-dimensional rectangular coordinate system is established with the acquisition time point in each capacitor data set as the abscissa and the capacitor data as the ordinate, and then the data change curve of the measurement parameters corresponding to each connection end in different operating states is acquired;

[0064] The acquisition process of the capacitor group data change curve includes:

[0065] The threshold range of the operating state corresponding measurement parameter is set, and is marked on each data change curve, and then the first capacitor group data change curve of the capacitor group corresponding measurement parameter is obtained by fusing each data change curve of the operating state corresponding to the capacitor group measurement parameter group;

[0066] The capacitor data corresponding to each acquisition time point of the first capacitor group data change curve is acquired and compared with the threshold range, if there is within the threshold range, the corresponding capacitor data is integrated to acquire the average number corresponding to the acquisition node, which is marked as the average capacitor data, otherwise, the corresponding capacitor data is marked as the abnormal capacitor data;

[0067] The average capacitor data corresponding to the acquisition time point is connected to generate a capacitor group data change curve with the acquisition time point as the abscissa and the average capacitor data as the ordinate;

[0068] In the above embodiment, it needs to be further explained that in the monitoring process of the operating state of the capacitor group, the threshold range is usually set to directly acquire the abnormal data and then acquire the abnormal operating state, and this method has contingency and data inaccuracy. Embodiment

[0069] This embodiment is a further limitation of embodiment 1, and the step S3 is realized by the following process:

[0070] The acquisition process of the abnormal capacitor data includes:

[0071] According to the data change curve, the capacitor group data change curve is updated in real time, and the average capacitor data corresponding to each acquisition time point in the real-time updated capacitor group data change curve is compared with the threshold range:

[0072] If the average capacitor data exists in the threshold range, the corresponding average capacitor data is marked as normal average capacitor data;

[0073] Conversely, 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, capacitor data corresponding to each data change curve is obtained according to the collection time point corresponding to the abnormal average capacitor data, and is marked as abnormal capacitor data;

[0074] The acquisition process of the abnormal capacitor group operating state includes:

[0075] The abnormal capacitor data is compared with the threshold range:

[0076] If the abnormal capacitor data exists in the threshold range, the corresponding abnormal capacitor data is marked as unconfirmed abnormal capacitor data; conversely, the corresponding abnormal capacitor data is marked as confirmed abnormal capacitor data;

[0077] The number of unconfirmed abnormal capacitor data and confirmed abnormal capacitor data of the abnormal average capacitor data corresponding to the collection time point is obtained, and is marked as unconfirmed number and confirmed number; the unconfirmed number and the confirmed number are obtained through the formula The abnormal confirmation value of the capacitor group at the collection time point is obtained ; wherein t represents the collection time point, Q t represents the confirmed number corresponding to the collection time point of the abnormal average capacitor data; WQ t represents the unconfirmed number corresponding to the collection time point of the abnormal average capacitor data;

[0078] If the abnormal confirmation value is greater than 0, the corresponding operating state is marked as a first abnormal capacitor group operating state; conversely, the corresponding operating state is marked as a second abnormal capacitor group operating state;

[0079] The first abnormal capacitor group operating state and the second abnormal capacitor group operating state are combined to generate an abnormal capacitor group operating state;

[0080] In the above embodiment, it needs to be further explained that the capacitor group is composed of several capacitors, and the abnormal operating state of the capacitor group may exist due to the abnormality of a certain capacitor data, therefore, the abnormal operating state of the capacitor group is obtained by the above method, and the abnormal capacitor data corresponding to the abnormal operating state is obtained. Embodiment

[0081] This embodiment is a further limitation of embodiment 1, and the step S4 is realized by the following process:

[0082] The determination process of the abnormal occurrence position and the abnormal parameter type includes:

[0083] The abnormal capacitor group running state corresponding confirmation abnormal capacitor data is acquired, and the number of the connection end corresponding to each confirmation abnormal capacitor data is acquired and marked as an abnormal occurrence position; then the measurement parameter corresponding to the confirmation abnormal capacitor data is acquired and marked as an abnormal parameter type;

[0084] According to the abnormal capacitor group running state, a first-class abnormal alarm signal and a second-class alarm signal are generated corresponding to the first-class abnormal capacitor group running state and the second-class abnormal capacitor group running state. Embodiment

[0085] The embodiment is a further limitation of embodiment 1, and the step S5 is realized by the following process:

[0086] The process of monitoring the capacitor group comprises:

[0087] The alarm signal is acquired, the corresponding abnormal occurrence position and abnormal parameter type are acquired according to the alarm signal, and then the capacitor group is monitored and repaired according to the abnormal occurrence position and the abnormal parameter type. Embodiment

[0088] As Figure 2 shown, the application also provides a system for monitoring the running state of a capacitor group;

[0089] The system comprises the following modules:

[0090] The acquisition module acquires the connection end between the plurality of capacitors of the capacitor group, and sets a plurality of sensors at each connection end, and then acquires the capacitor group measurement parameter group corresponding to the capacitor group according to the sensors;

[0091] The curve generation module acquires 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;

[0092] The running state analysis module analyzes the capacitor group data change curve to acquire abnormal capacitor data, and analyzes the abnormal capacitor data to acquire abnormal capacitor group running state;

[0093] The early warning module acquires the abnormal occurrence position and the abnormal parameter type corresponding to the abnormal capacitor group running state, and generates the corresponding alarm signal;

[0094] The monitoring module monitors and repairs the capacitor group according to the alarm signal.

[0095] The features and exemplary embodiments of various aspects of the present application will be described in detail above, in order to make the purposes, technical solutions and advantages of the present application clearer and more apparent, the present application is further described in detail above in combination with the drawings and specific embodiments; it should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit 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.

[0096] The above embodiments are only used to illustrate the technical method of the present application but not limit the present application, although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical method of the present application.

Claims

1. A method for monitoring the operating state of a capacitor bank, characterized in that The method comprises the following steps: Step S1: Obtain the connection terminals between the plurality of capacitors of the capacitor bank, and set a plurality of sensors at each connection terminal, and then acquire a 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 abnormal capacitor bank operating state; Step S4: Obtain the abnormal occurrence position and abnormal parameter type corresponding to the abnormal capacitor bank operating state, and generate a corresponding alarm signal; Step S5: Monitor and maintain the capacitor bank according to the alarm signal; The acquisition process of the capacitor bank data change curve comprises: Set the threshold range of the measurement parameter corresponding to the operating state, and mark on each data change curve, and then fuse each data change curve corresponding to the operating state of the capacitor bank measurement parameter group to obtain the first capacitor bank data change curve of the measurement parameter corresponding to 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 of the acquisition node, and mark it as 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 the capacitor bank data change curve with the acquisition time point as the horizontal coordinate and the average capacitor data as the vertical coordinate; The acquisition process of the abnormal capacitor data comprises: Real-time update the capacitor bank data change curve according to the data change curve, and compare the average capacitor data corresponding to each acquisition time point in the real-time updated capacitor bank data change curve 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, and obtain each data change curve corresponding to the abnormal average capacitor data, and mark the capacitor data corresponding to the acquisition time point of the abnormal average capacitor data as abnormal capacitor data The acquisition process of the abnormal capacitor bank operating state comprises: 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 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 group at the acquisition time point ; wherein 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, mark the corresponding operating state as a first abnormal capacitor bank operating state; otherwise, mark the corresponding operating state as a second abnormal capacitor bank operating state; Merge the first abnormal capacitor bank operating state and the second abnormal capacitor bank operating state to generate the abnormal capacitor bank operating state.

2. The method for monitoring the operating state of a capacitor bank according to claim 1, characterized in that, The acquisition process of the capacitor bank measurement parameter group comprises: The connection ends between the capacitors are numbered according to the incoming line end of the capacitor bank, and the measurement parameters corresponding to each sensor are obtained, the operating state corresponding to the capacitor bank is obtained, the capacitor data of each connection end in the corresponding operating state is collected according to the measurement parameters, and the corresponding collection time point is obtained; The sensors corresponding to the same measurement parameters of each connection end are connected through wireless communication, and the capacitor data collected by the same measurement parameters is integrated according to the operating state to generate a capacitor bank measurement parameter group corresponding to the measurement parameters.

3. The method for monitoring the operating state of a capacitor bank according to claim 2, characterized in that, The data change curve acquisition process includes: According to the preset collection period, the capacitor data collected by the measurement parameters corresponding to each connection end according to the collection time point is obtained, and the capacitor data set corresponding to the measurement parameters of each connection end is generated by data connection and integration of the collection time point; A two-dimensional rectangular coordinate system is established with the collection time point in each capacitor data set as the abscissa and the capacitor data as the ordinate, and then the data change curve of the measurement parameters corresponding to each connection end in different operating states is obtained.

4. The method for monitoring the operating state of a capacitor bank according to claim 1, characterized in that, The determination process of the abnormal occurrence position and the abnormal parameter type includes: The abnormal capacitor data corresponding to the abnormal capacitor bank operating state is obtained, and the number of the connection end corresponding to each abnormal capacitor data is obtained, which is marked as the abnormal occurrence position; then the measurement parameters corresponding to the abnormal capacitor data are obtained, which are marked as the abnormal parameter type; According to the abnormal capacitor bank operating state, the first abnormal capacitor bank operating state and the second abnormal capacitor bank operating state are generated to generate the first abnormal alarm signal and the second alarm signal.

5. The method for monitoring the operating state of a capacitor bank according to claim 4, characterized in that, The process of monitoring the capacitor bank includes: The alarm signal is obtained, the corresponding abnormal occurrence position and abnormal parameter type are obtained according to the alarm signal, and then the capacitor bank is monitored and repaired according to the abnormal occurrence position and the abnormal parameter type.

6. A system for monitoring the operating state of a capacitor bank, applied to a method for monitoring the operating state of a capacitor bank according to any one of claims 1 to 5, characterized in that, The system includes the following modules: The acquisition module: obtains the connection ends between the capacitors of the capacitor bank, and sets a plurality of sensors at each connection end, and then collects the capacitor bank measurement parameter group corresponding to the capacitor bank according to the sensors; The curve generation module: according to the capacitor bank measurement parameter group, the data change curve corresponding to the connection end is obtained, and each data change curve is fused to obtain the capacitor bank data change curve corresponding to the capacitor bank; The operating state analysis module: analyzes the capacitor bank data change curve to obtain abnormal capacitor data, and analyzes the abnormal capacitor data to obtain the abnormal capacitor bank operating state; The early warning module: obtains the abnormal occurrence position and the abnormal parameter type corresponding to the abnormal capacitor bank operating state, and generates the corresponding alarm signal; The monitoring module: according to the alarm signal, the capacitor bank is monitored and repaired.

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