CN112666415A - Power capacitor on-line monitoring device - Google Patents
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- CN112666415A CN112666415A CN202011507211.6A CN202011507211A CN112666415A CN 112666415 A CN112666415 A CN 112666415A CN 202011507211 A CN202011507211 A CN 202011507211A CN 112666415 A CN112666415 A CN 112666415A
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Abstract
The invention relates to a monitoring device, in particular to an online monitoring device for a power capacitor, which comprises a server, a cloud platform, a mobile terminal and a data acquisition module, wherein the server is connected with the data calculation module for calculating power grid parameters, the server is connected with a comparison judgment module for comparing and judging calculation results, the server is connected with a state output module for outputting the working state of the power capacitor according to the comparison judgment results, the server is connected with an action execution module for performing related actions on the power capacitor according to the comparison judgment results, the cloud platform is connected with a historical data storage module for storing historical data, and the server is used for classifying the data acquired by the data acquisition module and respectively storing the data in an operation data storage module and an environmental data storage module; the technical scheme provided by the invention can effectively overcome the defect that the power capacitor cannot be effectively monitored in the prior art.
Description
Technical Field
The invention relates to a monitoring device, in particular to an on-line monitoring device for a power capacitor.
Background
The high-voltage power capacitor complete equipment is reactive compensation equipment which is most widely applied and applied in the power system, the capacity of the reactive compensation equipment in China is nearly 10 hundred million kilowatts, most of the reactive compensation equipment is parallel capacitor complete equipment, and the high-voltage power capacitor complete equipment plays an important role in maintaining safe and stable operation of the power system, improving the quality of electric energy, reducing the loss of the electric energy, increasing the transmission capacity of a transmission and distribution line and a power transformer and the like. The availability of the reactive capacitance compensation equipment becomes an important technical index for power production management.
The reactive compensation device is arranged and installed in a substation independently, is generally connected in parallel on a low-voltage bus of the substation through a special switch device, and determines whether to input or not according to the power factor or the voltage of the bus of the power transformer. Because whether the power supply is put into use or not does not directly cause power failure of a user to influence the power supply reliability, the problem that the attention degree of safe and reliable operation of the power capacitor is insufficient exists, and a plurality of management loopholes exist in the aspects of installation, operation, detection, maintenance and the like. The fact shows that the accident rate of the power capacitor is at the head of all equipment of a transformer substation, a plurality of power capacitor complete sets are similar to the nominal ones, and can not be put into operation even all the year round due to various reasons, so that the effect of the power capacitor complete sets cannot be exerted, and the stable operation and the voltage quality of a power system are influenced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention provides the power capacitor online monitoring device which can effectively overcome the defect that the power capacitor cannot be effectively monitored in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a power capacitor online monitoring device comprises a server, a cloud platform, a mobile terminal and a data acquisition module, wherein the server is connected with a data calculation module used for calculating power grid parameters, the server is connected with a comparison judgment module used for comparing and judging calculation results, the server is connected with a state output module used for outputting the working state of a power capacitor according to the comparison judgment results, and the server is connected with an action execution module used for carrying out related actions on the power capacitor according to the comparison judgment results;
the cloud platform is connected with a historical data storage module used for storing historical data, the server is connected with a data processing module used for carrying out data processing on the historical data, the operating data and the environmental data, and the server is connected with an analysis evaluation module used for carrying out analysis evaluation on the working state of the power capacitor according to data processing results.
Preferably, the power grid parameters collected by the data collection module include a voltage of a secondary side of a bus voltage transformer of a substation where the power capacitor is located, a current of the secondary side of a current transformer of a power capacitor outgoing line switch cabinet, and an operating voltage of the power capacitor.
Preferably, the data calculation module calculates the active power and the reactive power of the power capacitor according to the power grid parameters acquired by the data acquisition module.
Preferably, when the comparison and judgment module judges that the current of the secondary side of the current transformer of the switch cabinet of the power capacitor is greater than a threshold value, or the operating voltage of the power capacitor is greater than the threshold value, or the reactive power is greater than the threshold value, or the active power is less than the threshold value, the comparison and judgment module judges that the power capacitor is in an abnormal working state, and meanwhile, the state output module outputs prompt information that the power capacitor is in the abnormal working state.
Preferably, when the comparison and judgment module judges that the power capacitor is in an abnormal working state, the action execution module sends a disconnection instruction to a circuit breaker of the power capacitor inlet line switch cabinet; otherwise, the action execution module maintains the closing state of the incoming line switch cabinet breaker.
Preferably, the historical data stored in the historical data storage module includes power capacitor device information, service life, and maintenance information;
the operation data acquired by the data acquisition module comprises load voltage, load current, capacitance and insulation resistance value;
the environmental data collected by the data collection module comprise the temperature of the power capacitor, the humidity of the outside air and the residual oil quantity.
Preferably, the data processing module performs weight calculation and membership calculation on the historical data, the operating data and the environmental data respectively, and obtains evaluation parameters according to the calculated weight and membership, and the analysis and evaluation module analyzes and evaluates the working state of the power capacitor by integrating the evaluation parameters of the historical data, the operating data and the environmental data.
Preferably, the system further comprises a data visualization module connected with the server and used for displaying the running data and the environment data change trend in a dynamic line graph;
the data visualization module comprises a data pool for storing data, and when the data pool has vacant positions, the received new data is put into the data pool; when the data in the data pool is full, the data added at the earliest time is deleted, and new data is added.
Preferably, the mobile terminal realizes data communication with the server through an HTTP protocol, and the mobile terminal realizes data communication with the cloud platform through a Socket.
Preferably, each time the mobile terminal requests data from the server, the stored Session value must be submitted to the server, otherwise, corresponding data cannot be acquired;
when the mobile terminal and the server are in data communication, the server returns data in a JSON format, and the mobile terminal directly converts the JSON data into a self-defined Java object through a JSON-Bean, so that the data operation is facilitated.
(III) advantageous effects
Compared with the prior art, the power capacitor online monitoring device provided by the invention can be used for monitoring the power capacitor in real time through the collection of a large amount of related data, effectively analyzing and evaluating the working state of the power capacitor, and simultaneously, timely and effectively executing actions are taken to ensure the normal operation of a power grid and the safety protection of the power capacitor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of the system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a power capacitor on-line monitoring device, as shown in figure 1, including server, cloud platform, mobile terminal to and data acquisition module, the server links to each other with the data calculation module that is used for calculating the electric wire netting parameter, the server links to each other with the contrast judgment module that is used for carrying out the comparison judgement to the calculated result, the server links to each other with the state output module that is used for exporting power capacitor operating condition according to the comparison judgement result, the server links to each other with the action execution module that is used for carrying out relevant action to power capacitor according to the comparison judgement result.
The power grid parameters collected by the data collection module comprise the secondary side voltage of a bus voltage transformer of a transformer substation where the power capacitor is located, the current of the secondary side of a current transformer of a power capacitor outgoing line switch cabinet and the operating voltage of the power capacitor. And the data calculation module is used for calculating the active power and the reactive power of the power capacitor according to the power grid parameters acquired by the data acquisition module.
When the comparison and judgment module judges that the current of the secondary side of the switch cabinet current transformer of the power capacitor is greater than a threshold value, or the operating voltage of the power capacitor is greater than the threshold value, or the reactive power is greater than the threshold value, or the active power is less than the threshold value, the comparison and judgment module judges that the power capacitor is in an abnormal working state, and meanwhile, the state output module outputs prompt information that the power capacitor is in the abnormal working state.
When the comparison and judgment module judges that the power capacitor is in an abnormal working state, the action execution module sends a disconnection instruction to a circuit breaker of the power capacitor inlet wire switch cabinet; otherwise, the action execution module maintains the closing state of the incoming line switch cabinet breaker.
The cloud platform is connected with a historical data storage module used for storing historical data, the server is connected with a data processing module used for classifying data collected by the data collection module and storing the data into the operating data storage module and the environmental data storage module respectively, the server is connected with a data processing module used for processing the historical data, the operating data and the environmental data, and the server is connected with an analysis evaluation module used for analyzing and evaluating the working state of the power capacitor according to a data processing result.
The historical data stored in the historical data storage module comprises power capacitor device information, service life and maintenance information;
the operation data acquired by the data acquisition module comprises load voltage, load current, capacitance and insulation resistance value;
the environmental data collected by the data collection module comprise the temperature of the power capacitor, the humidity of the outside air and the residual oil quantity.
The data processing module respectively carries out weight calculation and membership calculation on the historical data, the operating data and the environmental data, evaluation parameters are obtained according to the calculated weight and the calculated membership, and the analysis and evaluation module integrates the evaluation parameters of the historical data, the operating data and the environmental data to carry out analysis and evaluation on the working state of the power capacitor.
According to the technical scheme, the working state of the power capacitor is analyzed and evaluated through evaluation parameters of historical data, operating data and environmental data, the current working state of the power capacitor can be comprehensively analyzed, and convenience is brought to maintenance and management work of managers.
The data visualization module is connected with the server and used for displaying the operation data and the environment data change trend by a dynamic line graph; the data visualization module comprises a data pool for storing data, and when the data pool has vacant positions, the received new data is put into the data pool; when the data in the data pool is full, the data added at the earliest time is deleted, and new data is added.
According to the technical scheme, the mobile terminal realizes data communication with the server through the HTTP, and the mobile terminal realizes data communication with the cloud platform through the Socket.
When the mobile terminal requests data from the server each time, the stored Session value must be submitted to the server, otherwise, the corresponding data cannot be acquired;
when the mobile terminal and the server carry out data communication, the server returns data in a JSON format, and the mobile terminal directly converts the JSON data into a self-defined Java object through a JSON-Bean, so that the data operation is convenient.
After the user successfully logs in the mobile software, the user enters an equipment selection interface, and equipment which can be checked is different according to different permissions of logging in the account. The administrator user can view all the devices, and the ordinary user can only view the devices of the ordinary user.
The mobile terminal can receive prompt information that the state output module outputs that the power capacitor is in an abnormal working state, analyze and evaluate the working state of the power capacitor by the analysis and evaluation module, and display a visual result of the running data and the environmental data change trend by the data visualization module through a dynamic line graph, so that a manager can know the current working state of the power capacitor in time.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The utility model provides a power capacitor on-line monitoring device which characterized in that: the power grid parameter comparison and judgment system comprises a server, a cloud platform, a mobile terminal and a data acquisition module, wherein the server is connected with a data calculation module used for calculating power grid parameters, the server is connected with a comparison and judgment module used for comparing and judging calculation results, the server is connected with a state output module used for outputting the working state of a power capacitor according to the comparison and judgment results, and the server is connected with an action execution module used for carrying out related actions on the power capacitor according to the comparison and judgment results;
the cloud platform is connected with a historical data storage module used for storing historical data, the server is connected with a data processing module used for carrying out data processing on the historical data, the operating data and the environmental data, and the server is connected with an analysis evaluation module used for carrying out analysis evaluation on the working state of the power capacitor according to data processing results.
2. A power capacitor online monitoring device according to claim 1, characterized in that: the power grid parameters collected by the data collection module comprise the secondary side voltage of a bus voltage transformer of a transformer substation where the power capacitor is located, the current of the secondary side of a current transformer of a power capacitor outgoing line switch cabinet and the operating voltage of the power capacitor.
3. A power capacitor online monitoring device according to claim 2, characterized in that: and the data calculation module is used for calculating the active power and the reactive power of the power capacitor according to the power grid parameters acquired by the data acquisition module.
4. A power capacitor online monitoring device according to claim 3, characterized in that: when the comparison and judgment module judges that the current of the secondary side of the switch cabinet current transformer of the power capacitor is greater than a threshold value, or the operating voltage of the power capacitor is greater than the threshold value, or the reactive power is greater than the threshold value, or the active power is less than the threshold value, the comparison and judgment module judges that the power capacitor is in an abnormal working state, and meanwhile, the state output module outputs prompt information that the power capacitor is in the abnormal working state.
5. A power capacitor online monitoring device according to claim 4, characterized in that: when the comparison and judgment module judges that the power capacitor is in an abnormal working state, the action execution module sends a disconnection instruction to a circuit breaker of the power capacitor inlet wire switch cabinet; otherwise, the action execution module maintains the closing state of the incoming line switch cabinet breaker.
6. A power capacitor online monitoring device according to claim 1, characterized in that: the historical data stored in the historical data storage module comprises power capacitor device information, service life and maintenance information;
the operation data acquired by the data acquisition module comprises load voltage, load current, capacitance and insulation resistance value;
the environmental data collected by the data collection module comprise the temperature of the power capacitor, the humidity of the outside air and the residual oil quantity.
7. A power capacitor online monitoring device according to claim 6, characterized in that: the data processing module is used for respectively carrying out weight calculation and membership calculation on historical data, operating data and environmental data, and obtaining evaluation parameters according to the calculated weight and membership, and the analysis and evaluation module is used for analyzing and evaluating the working state of the power capacitor by integrating the evaluation parameters of the historical data, the operating data and the environmental data.
8. A power capacitor online monitoring device according to claim 6, characterized in that: the data visualization module is connected with the server and used for displaying the running data and the environment data change trend by a dynamic line graph;
the data visualization module comprises a data pool for storing data, and when the data pool has vacant positions, the received new data is put into the data pool; when the data in the data pool is full, the data added at the earliest time is deleted, and new data is added.
9. A power capacitor online monitoring device according to claim 1, characterized in that: the mobile terminal realizes data communication with the server through an HTTP (hyper text transport protocol), and the mobile terminal realizes data communication with the cloud platform through a Socket.
10. A power capacitor online monitoring device according to claim 9, characterized in that: when the mobile terminal requests data from the server each time, the stored Session value must be submitted to the server, otherwise, the corresponding data cannot be acquired;
when the mobile terminal and the server are in data communication, the server returns data in a JSON format, and the mobile terminal directly converts the JSON data into a self-defined Java object through a JSON-Bean, so that the data operation is facilitated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011507211.6A CN112666415A (en) | 2020-12-18 | 2020-12-18 | Power capacitor on-line monitoring device |
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| CN202011507211.6A CN112666415A (en) | 2020-12-18 | 2020-12-18 | Power capacitor on-line monitoring device |
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