CN115208064A - Intelligent monitoring system for photovoltaic box transformer substation and monitoring method thereof - Google Patents
Intelligent monitoring system for photovoltaic box transformer substation and monitoring method thereof Download PDFInfo
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- 238000001514 detection method Methods 0.000 claims description 55
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- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000013589 supplement Substances 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 description 5
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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Abstract
The invention relates to an intelligent monitoring system for photovoltaic box transformers and a monitoring method thereof, wherein a field control management module is arranged on the field of a photovoltaic power station, a secondary networking communication module is arranged in the photovoltaic box transformers to network each photovoltaic box transformer on the field so as to form a local area network, and then the field control management module can acquire electrical quantity parameters in each photovoltaic box transformer on the field in real time, and whether each photovoltaic box transformer and a corresponding solar cell panel area work normally or not is judged by comparing the electrical quantity parameters, so that the field real-time monitoring is realized, monitoring results can be given in time, the supplement of conventional remote monitoring is realized, and the monitoring timeliness is improved.
Description
Technical Field
The invention relates to the technical field of photovoltaic box transformer substation control, in particular to an intelligent monitoring system for a photovoltaic box transformer substation and a monitoring method thereof.
Background
The grid-connected photovoltaic power generation begins in the 80 th century, and the photovoltaic power generation is a technology for directly converting light energy into electric energy by utilizing the photovoltaic effect of a semiconductor interface, and forms a photovoltaic power generation device by matching with a controller, electrical equipment and the like. The photovoltaic box transformer is a conversion device of alternating current energy, firstly, direct current is converted into alternating current through an inverter, and then alternating voltage and current with a certain value can be converted into alternating voltage and current with another value and the same frequency, so that electric energy is transmitted, distributed and used, and safety and economy are achieved. The automatic monitoring system plays an important role in the photovoltaic power station, monitors the working state of the photovoltaic power station through data acquisition, and realizes the operation control of the power generation equipment, thereby realizing the remote management and the automatic monitoring of the photovoltaic power generation equipment and achieving the operation management mode of 'unattended operation and unattended operation'.
However, in the existing monitoring system for the photovoltaic power station, data are uniformly sent to a remote control center for processing and then are accurately analyzed and processed by the control center, so that automatic control is realized, the structure is complex, real-time field dynamic monitoring cannot be performed on each photovoltaic box transformer substation, processing information lag may be caused, and unnecessary potential safety hazards are brought.
Disclosure of Invention
The invention aims to provide an intelligent monitoring system for a photovoltaic box transformer substation and a monitoring method thereof, which are simple in structure and clear in area division, and can be used for carrying out regional statistical comparison on a photovoltaic power station, so that the monitoring reliability, stability and timeliness are improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides an intelligent monitoring system for a photovoltaic box transformer, which comprises a low-pressure chamber, a high-pressure chamber and a transformation chamber positioned between the low-pressure chamber and the high-pressure chamber, wherein a step-up transformer is arranged in the transformation chamber, a grid-connected inverter is arranged in the low-pressure chamber, direct current generated by a solar cell panel is connected into the photovoltaic box transformer through the low-pressure chamber, the direct current connected into the low-pressure chamber is processed by the grid-connected inverter and the step-up transformer to generate high-voltage alternating current to be sent out from the high-pressure chamber, the intelligent monitoring system comprises a low-pressure chamber detection module, a high-pressure chamber detection module, a transformation chamber detection module and a main communication module, the main communication module is connected with a remote control center, the low-pressure chamber detection module, the high-pressure chamber detection module and the transformation chamber detection module are all in communication connection with the control center through the main communication module, a secondary networking communication module is further arranged in the intelligent monitoring system, a plurality of photovoltaic box transformers positioned in the same area form a local area network through the secondary networking communication module, and each secondary networking communication module is arranged in an area with the high-pressure chamber detection module and a field control management module and a high-voltage detection data detection module and a transformation chamber detection module are fed back.
For the above technical solution, the applicant has further optimization measures.
Optionally, a first electrical parameter detection module is arranged in the low-voltage chamber detection module, a second electrical parameter detection module is arranged in the high-voltage chamber detection module, and the field control management module performs statistics and loop comparison according to electrical parameters in the low-voltage chamber detection module and the high-voltage chamber detection module in each photovoltaic box transformer substation, so as to determine the working conditions of each photovoltaic box transformer substation and the solar panel.
Furthermore, parameters of solar panels corresponding to the photovoltaic box transformers are preconfigured in the field control management module, the parameters are converted into collected electrical quantity parameters according to the number of the solar panels corresponding to the photovoltaic box transformers to be standardized, the energy conversion rates corresponding to the photovoltaic box transformers are compared, and therefore the photovoltaic box transformers and even working conditions corresponding to the solar panels are judged to send out field alarm prompts.
Optionally, the first electrical parameter detection module is used for detecting each electrical parameter in the low-voltage chamber, where the electrical parameters include a three-phase current parameter, a three-phase voltage parameter, a frequency parameter, a power factor parameter, an active power parameter, a reactive power parameter, an active power parameter, and a reactive power parameter; the second electric quantity parameter detection module is used for detecting each electric quantity parameter in the high-voltage chamber, and the electric quantity parameters comprise three-phase current parameters, three-phase voltage parameters, frequency parameters, power factor parameters, active power parameters, reactive power parameters, active electric power parameters and reactive electric power parameters.
Particularly, the invention provides an intelligent monitoring method for photovoltaic box-type transformers, which comprises the steps of carrying out regional networking on a plurality of photovoltaic box-type transformers in the same region, carrying out statistics on electrical quantity parameters fed back by each photovoltaic box-type transformer after networking, carrying out real-time comparison, and sending a field alarm if the difference of the electrical quantity parameters among the photovoltaic box-type transformers is larger than a set threshold value under the real-time comparison.
Optionally, the number of the solar panels correspondingly connected with each photovoltaic box transformer substation is the same, the method counts and directly compares the electric quantity parameters fed back by each photovoltaic box transformer substation, if the difference of the electric quantity parameters among the photovoltaic box transformer substations is larger than a set threshold value, a field alarm is sent out, and if not, a normal monitoring action is kept.
Optionally, the number of the solar panels correspondingly connected to each photovoltaic box transformer substation is different, the method counts the electric quantity parameters fed back by each photovoltaic box transformer substation, realizes standard quantized electric quantity parameters corresponding to a single solar panel except the number of the solar panels, compares the standard quantized electric quantity parameters, and sends out a field alarm if the difference between the standard quantized electric quantity parameters among the photovoltaic box transformers is greater than a set threshold value, otherwise, keeps normal monitoring action.
Further, the method calculates the intermediate mean value of the standard quantized electrical quantity parameters, then compares the standard quantized electrical quantity parameters of the single solar cell panel corresponding to each photovoltaic box transformer substation with the calculated intermediate mean value, and sends a field alarm if the difference between the standard quantized electrical quantity parameters and the intermediate mean value among the photovoltaic box transformer substations is larger than a set threshold value, otherwise, normal monitoring action is kept.
Optionally, the set threshold is 10% to 15%.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the intelligent monitoring system and the monitoring method for the photovoltaic box transformer substation, the field control management module is arranged on the site of the photovoltaic power station, the secondary networking communication module is arranged in the photovoltaic box transformer substation, and each photovoltaic box transformer substation is networked on the site to form a local area network, so that the field control management module can collect electrical quantity parameters of each photovoltaic box transformer substation on the site in real time, and whether each photovoltaic box transformer substation and a corresponding solar cell panel area of each photovoltaic box transformer substation work normally or not is judged through comparison of the electrical quantity parameters, so that the field real-time monitoring is realized, a monitoring result can be given in time, the supplement of conventional remote monitoring is realized, and meanwhile, the monitoring timeliness is improved.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:
fig. 1 is a working principle block diagram of an intelligent monitoring system for a photovoltaic box transformer substation according to an embodiment of the invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1:
the embodiment describes an intelligent monitoring system for a photovoltaic box transformer, as shown in fig. 1, the photovoltaic box transformer comprises a low-voltage chamber, a high-voltage chamber, and a transformation chamber located between the low-voltage chamber and the high-voltage chamber, a step-up transformer is arranged in the transformation chamber, a grid-connected inverter is arranged in the low-voltage chamber, direct current generated by a solar panel is connected into the photovoltaic box transformer through the low-voltage chamber, the direct current connected into the low-voltage chamber is processed by the grid-connected inverter and the step-up transformer to generate high-voltage alternating current, the high-voltage alternating current is sent out from the high-voltage chamber, the intelligent monitoring system comprises a low-voltage chamber detection module, a high-voltage chamber detection module, a transformation chamber detection module and a main communication module, the main communication module is connected with a remote control center, the low-voltage chamber detection module, the high-voltage chamber detection module and the transformation chamber detection module are all in communication connection with the control center through the main communication module, a secondary networking communication module is further arranged in the intelligent monitoring system, a plurality of photovoltaic box transformers located in the same region form a local area network through the secondary networking communication module, and each secondary networking communication module is arranged in the field communication module and keeps the high-voltage chamber detection module and the on-site detection data detection module.
The on-site control management module is used for counting and carrying out ring ratio according to the electrical quantity parameters in the low-pressure chamber detection module and the high-pressure chamber detection module in each photovoltaic box transformer substation so as to judge the working conditions of each photovoltaic box transformer substation and the solar cell panel.
The field control management module is pre-configured with parameters of solar cell panels corresponding to the photovoltaic box transformers, the parameters of the collected electrical quantity are converted according to the number of the solar cell panels corresponding to the photovoltaic box transformers to be standardized, the energy conversion rates corresponding to the photovoltaic box transformers are compared, and then the photovoltaic box transformers and even working conditions corresponding to the solar cell panels are judged to send field alarm prompts.
The first electric quantity parameter detection module is used for detecting each electric quantity parameter in the low-voltage chamber, and the electric quantity parameters comprise three-phase current parameters, three-phase voltage parameters, frequency parameters, power factor parameters, active power parameters, reactive power parameters, active electric power parameters and reactive electric power parameters; the second electric quantity parameter detection module is used for detecting each electric quantity parameter in the high-voltage chamber, and the electric quantity parameters comprise three-phase current parameters, three-phase voltage parameters, frequency parameters, power factor parameters, active power parameters, reactive power parameters, active electric power parameters and reactive electric power parameters.
Specifically, in this embodiment, a plurality of photovoltaic box substations in the same area are subjected to area networking, statistics is performed on electrical quantity parameters fed back by each photovoltaic box substation after the networking is performed, and a field alarm is given if the electrical quantity parameter difference between each photovoltaic box substation is greater than a set threshold value in real time, where the set threshold value may be designed to be 10% to 15%.
In one case, when the arrangement design of the photovoltaic power station is carried out, the number of the solar cell panels correspondingly connected with each photovoltaic box transformer substation is the same, the method carries out statistics and direct comparison on the electric quantity parameters fed back by each photovoltaic box transformer substation, if the electric quantity parameter difference among the photovoltaic box transformer substations is larger than a set threshold value, a field alarm is sent out, and otherwise, normal monitoring action is kept.
In another case, when the photovoltaic power station is arranged, the number of the solar panels correspondingly connected with each photovoltaic box transformer substation is different, the method counts the electric quantity parameters fed back by each photovoltaic box transformer substation, realizes the standard quantized electric quantity parameters corresponding to a single solar panel by removing the number of the solar panels, then compares the standard quantized electric quantity parameters, and sends out a field alarm if the difference between the standard quantized electric quantity parameters among the photovoltaic box transformers is greater than a set threshold value, otherwise, keeps a normal monitoring action.
Further, the method calculates an intermediate mean value of the standard quantized electrical quantity parameters, then compares the standard quantized electrical quantity parameters of the single solar cell panel corresponding to each photovoltaic box transformer substation with the calculated intermediate mean value, and sends a field alarm if the difference between the standard quantized electrical quantity parameters of each photovoltaic box transformer substation and the intermediate mean value is larger than a set threshold value, otherwise, normal monitoring action is kept.
Example 2: :
the embodiment describes an intelligent monitoring method for a photovoltaic box transformer, which is based on the intelligent monitoring system described in embodiment 1, wherein the photovoltaic box transformer includes a low-voltage chamber, a high-voltage chamber, and a transformation chamber located between the low-voltage chamber and the high-voltage chamber, a step-up transformer is disposed in the transformation chamber, a grid-connected inverter is disposed in the low-voltage chamber, direct current generated by a solar panel is connected to the photovoltaic box transformer through the low-voltage chamber, the direct current connected to the low-voltage chamber is processed by the grid-connected inverter and the step-up transformer to generate high-voltage alternating current, which is sent out from the high-voltage chamber, the intelligent monitoring system includes a low-voltage chamber detection module, a high-voltage chamber detection module, a transformation chamber detection module, and a main communication module, the main communication module is connected to a remote control center, the low-voltage chamber detection module, the high-voltage chamber detection module, and the transformation chamber detection module are all in communication connection with the control center through the main communication module, a secondary networking communication module is further disposed in the intelligent monitoring system, a plurality of photovoltaic box transformers located in the same region form a local area network through the secondary networking communication module, and each of the low-voltage chamber detection module and each of the field monitoring system is maintained in communication module.
The intelligent monitoring method of the embodiment performs regional networking on a plurality of photovoltaic box substations in the same region, counts the electrical quantity parameters fed back by each photovoltaic box substation after networking and compares the electrical quantity parameters in real time, and sends a field alarm if the electrical quantity parameter difference between the photovoltaic box substations is larger than a set threshold value under the real-time comparison, wherein the set threshold value can be designed to be 10% -15%.
In one case, when the arrangement design of the photovoltaic power station is carried out, the number of the solar cell panels correspondingly connected with each photovoltaic box transformer substation is the same, the method carries out statistics and direct comparison on the electric quantity parameters fed back by each photovoltaic box transformer substation, if the electric quantity parameter difference among the photovoltaic box transformer substations is larger than a set threshold value, a field alarm is sent out, and otherwise, normal monitoring action is kept.
In another case, when the photovoltaic power station is arranged, the number of the solar panels correspondingly connected to each photovoltaic box transformer substation is different, the method counts the electric quantity parameters fed back by each photovoltaic box transformer substation, realizes the standard quantized electric quantity parameters corresponding to a single solar panel according to the number of the solar panels, compares the standard quantized electric quantity parameters, and gives a field alarm if the difference between the standard quantized electric quantity parameters of each photovoltaic box transformer substation is greater than a set threshold value, otherwise, keeps normal monitoring action.
Further, the method calculates an intermediate mean value of the standard quantized electrical quantity parameters, then compares the standard quantized electrical quantity parameters of the single solar cell panel corresponding to each photovoltaic box transformer substation with the calculated intermediate mean value, and sends a field alarm if the difference between the standard quantized electrical quantity parameters of each photovoltaic box transformer substation and the intermediate mean value is larger than a set threshold value, otherwise, normal monitoring action is kept.
In summary, according to the intelligent monitoring system and the monitoring method for the photovoltaic box transformer substation, the field control management module is arranged on the site of the photovoltaic power station, the secondary networking communication module is arranged in the photovoltaic box transformer substation, and each photovoltaic box transformer substation is networked on the site to form a local area network, so that the field control management module can collect electrical parameters of each photovoltaic box transformer substation on the site in real time, and whether each photovoltaic box transformer substation and the corresponding solar cell panel area of the photovoltaic box transformer substation work normally or not is judged by comparing the electrical parameters, real-time monitoring on the site is realized, a monitoring result can be given in time, supplement of conventional remote monitoring is realized, and monitoring timeliness is improved.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (10)
1. The intelligent monitoring system comprises a low-voltage chamber, a high-voltage chamber and a transformation chamber, wherein the transformation chamber is positioned between the low-voltage chamber and the high-voltage chamber, a step-up transformer is arranged in the transformation chamber, a grid-connected inverter is arranged in the low-voltage chamber, direct current generated by a solar panel is accessed into the photovoltaic box transformer through the low-voltage chamber, the direct current accessed into the low-voltage chamber is processed by the grid-connected inverter and the step-up transformer to generate high-voltage alternating current to be sent out by the high-voltage chamber, the intelligent monitoring system comprises a low-voltage chamber detection module, a high-voltage chamber detection module, a transformation chamber detection module and a main communication module, the main communication module is connected with a remote control center, the low-voltage chamber detection module, the high-voltage chamber detection module and the transformation chamber detection module are all in communication connection with the control center through the main communication module, and is characterized in that a secondary networking communication module is further arranged in the intelligent monitoring system, a plurality of photovoltaic box transformers positioned in the same area form a local area network through the secondary networking communication module, and a field control management module is arranged in the area, and each secondary networking communication module keeps in communication with the low-voltage chamber detection module, feeds back to the high-voltage chamber detection module and the high-voltage chamber detection module.
2. The intelligent monitoring system for the photovoltaic box transformer substation according to claim 1, wherein a first electrical parameter detection module is disposed in the low-pressure chamber detection module, a second electrical parameter detection module is disposed in the high-pressure chamber detection module, and the field control management module performs statistics and loop ratio according to the electrical parameters in the low-pressure chamber detection module and the high-pressure chamber detection module in each photovoltaic box transformer substation, so as to determine the operating conditions of each photovoltaic box transformer substation and the solar panel.
3. The intelligent monitoring system for the photovoltaic box transformer substation as claimed in claim 2, wherein the field control management module is preconfigured with parameters of the solar cell panels corresponding to the photovoltaic box transformer substations, converts the number of the solar cell panels corresponding to the photovoltaic box transformer substations into collected electrical quantity parameters for standardization, compares the energy conversion rates corresponding to the photovoltaic box transformer substations, and further judges whether the photovoltaic box transformer substation or even the working condition of the corresponding solar cell panel sends out a field alarm prompt.
4. The intelligent monitoring system for the photovoltaic box transformer substation as claimed in claim 2 or 3, wherein the first electrical parameter detection module is used for detecting each electrical parameter in the low-voltage chamber, and the electrical parameters comprise a three-phase current parameter, a three-phase voltage parameter, a frequency parameter, a power factor parameter, an active power parameter, a reactive power parameter, an active power parameter and a reactive power parameter.
5. The intelligent monitoring system for the photovoltaic box transformer substation according to claim 2 or 3, wherein the second electric quantity parameter detection module is used for detecting each electric quantity parameter in the high-voltage chamber, and the electric quantity parameters comprise a three-phase current parameter, a three-phase voltage parameter, a frequency parameter, a power factor parameter, an active power parameter, a reactive power parameter, an active power parameter and a reactive power parameter.
6. The intelligent monitoring method for the photovoltaic box transformer substation is characterized in that a plurality of photovoltaic box transformer substations in the same region are subjected to regional networking, statistics is carried out on electrical quantity parameters fed back by the photovoltaic box transformer substations after networking is carried out, real-time comparison is carried out, and a field alarm is sent out if the difference of the electrical quantity parameters among the photovoltaic box transformer substations is larger than a set threshold value under the real-time comparison.
7. The intelligent monitoring method for the photovoltaic box transformer substation as claimed in claim 6, wherein the number of the solar panels correspondingly connected to each photovoltaic box transformer substation is the same, the method counts and directly compares the electric quantity parameters fed back by each photovoltaic box transformer substation, if the difference of the electric quantity parameters among the photovoltaic box transformer substations is larger than a set threshold value, a field alarm is given, and otherwise, a normal monitoring action is kept.
8. The intelligent monitoring method for the photovoltaic box transformer substation as claimed in claim 6, wherein the number of the solar panels correspondingly connected to each photovoltaic box transformer substation is different, the method counts the electric quantity parameters fed back by each photovoltaic box transformer substation, realizes standard quantized electric quantity parameters corresponding to a single solar panel except the number of the solar panels, compares the standard quantized electric quantity parameters, and sends out a field alarm if the difference between the standard quantized electric quantity parameters of each photovoltaic box transformer substation is greater than a set threshold, otherwise keeps normal monitoring action.
9. The intelligent monitoring method for the photovoltaic box transformer substation according to claim 8, wherein the method calculates an intermediate mean value of the standard quantized electrical quantity parameters, then compares the standard quantized electrical quantity parameters of the single solar panel corresponding to each photovoltaic box transformer substation with the calculated intermediate mean value, and sends a field alarm if the difference between the standard quantized electrical quantity parameters of each photovoltaic box transformer substation and the intermediate mean value is greater than a set threshold, otherwise, keeps a normal monitoring action.
10. The intelligent monitoring method for the photovoltaic box transformer substation according to any one of claims 6 to 9, wherein the set threshold value is 10% -15%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116797854A (en) * | 2023-08-18 | 2023-09-22 | 常州思瑞电力科技有限公司 | Abnormality monitoring learning method based on photovoltaic box transformer substation monitoring system |
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