CN114295941A - High-voltage cable insulation data acquisition and fault early warning device and method - Google Patents
High-voltage cable insulation data acquisition and fault early warning device and method Download PDFInfo
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Abstract
The invention provides a high-voltage cable insulation data acquisition and fault early warning device and a method, wherein the device comprises a device body and a sensor module; a control module is arranged in the device body and is connected with a storage, data analysis and fault early warning positioning module; the control module is also connected with the sensor module; the sensor module comprises a plurality of current sensors, and each current sensor is arranged at a grounding conductor of the high-voltage cable section; the storage module is used for storing the position information of the high-voltage cable section corresponding to each current sensor and the range of the normal current threshold value; the data analysis module is used for comparing the real-time current value acquired by the current sensor with a normal current threshold range and judging whether the real-time current value exceeds the normal current threshold range or not; and the fault early warning positioning module is used for positioning the high-voltage cable section with the fault according to the position information of the high-voltage cable section corresponding to the current sensor provided by the storage module when the real-time current value of the current sensor exceeds the normal current threshold range, and early warning.
Description
Technical Field
The invention belongs to the technical field of power fault early warning, and particularly relates to a high-voltage cable insulation data acquisition and fault early warning device and method.
Background
The requirements of power plants and wind power plants on the safety and stability of long-term operation of high-voltage cables are higher and higher, and the real-time monitoring and fault early warning of cable insulation have important significance for ensuring the reliability of power supply. However, the operation condition of the cable is complex, and if an accident is caused by a cable fault, the safe operation of the equipment is seriously affected. At present, most of domestic and foreign researches are researches on diagnosis after a cable has a fault and location after the cable has the fault, the traditional detection methods mainly comprise a bridge method, a low-voltage pulse reflection method, a pulse voltage method, a pulse current method, a secondary pulse method (a multi-pulse method) and the like, the existing detection methods have respective limitations for high-voltage cable fault location, and the existing detection methods are detection after the fault occurs, so that the safe operation of equipment is still influenced, and economic loss is caused.
Therefore, it is very necessary to provide a device and a method for collecting insulation data of a high-voltage cable and warning a fault in view of the above-mentioned drawbacks in the prior art.
Disclosure of Invention
The invention provides a high-voltage cable insulation data acquisition and fault early warning device and method, aiming at the defects that the existing power fault detection method in the prior art has limitations and the detection after the fault occurs can affect the safe operation of equipment.
In a first aspect, the invention provides a high-voltage cable insulation data acquisition and fault early warning device, which comprises a device body and a sensor module, wherein the sensor module is arranged on the device body;
a control module is arranged in the device body and is connected with a storage module, a data analysis module and a fault early warning positioning module; the control module is also connected with the sensor module;
the sensor module comprises a plurality of current sensors, and each current sensor is arranged at the grounding conductor of each high-voltage cable section and used for detecting the steady-state current of the metal protective layer at the grounding conductor of the high-voltage cable;
the storage module is used for pre-storing the position information of the high-voltage cable section corresponding to each current sensor and the normal current threshold range of the grounding conductor of the high-voltage cable section;
the data analysis module is used for comparing the real-time current value acquired by the current sensor with the normal current threshold range of the grounding conductor of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module, and judging whether the real-time current value of the current sensor exceeds the normal current threshold range or not;
and the fault early warning positioning module is used for positioning the high-voltage cable section with the fault according to the position information of the high-voltage cable section corresponding to the current sensor provided by the storage module when the real-time current value of the current sensor exceeds the normal current threshold range, and early warning.
Further, the high-voltage sections are 35KV, 10KV and 6KV high-voltage cable sections.
Further, the storage module comprises a position storage unit and a current value storage unit;
the position storage unit is used for storing the serial number of the current sensor and the position information of the high-voltage cable section where the corresponding current sensor is located;
the current value storage unit is used for storing the serial number of the current sensor and the normal current threshold range of the grounding conductor of the high-voltage cable section corresponding to the current sensor;
the data analysis module comprises a real-time current acquisition unit, a current range acquisition unit and a data analysis unit;
the real-time current acquisition unit is used for acquiring the serial number of the current sensor and the real-time current value acquired by the current sensor from the current sensor;
the current range acquisition unit is used for acquiring the serial number of the current sensor and the normal current threshold range of the grounding conductor of the high-voltage cable section corresponding to the current sensor from the storage module;
the data analysis unit is used for judging whether the real-time current value of the current sensor exceeds the range of the normal current threshold value, calculating the current variation trend of the current sensor and judging whether the current sensor has the trend exceeding the range of the normal current threshold value;
the fault early warning positioning module comprises a fault positioning unit and an early warning generation unit;
the fault positioning unit is used for positioning a high-voltage cable section with a fault according to the position information of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module, when the real-time current value of the current sensor exceeds the range of the normal current threshold value or the current sensor has the tendency of exceeding the range of the normal current threshold value;
and the early warning generation unit is used for generating early warning information according to the position of the high-voltage cable section with the fault and the serial number of the device body.
Furthermore, a network module is also arranged in the device body, and the network module is provided with an Ethernet interface;
the device body is also connected with a remote dispatching center;
the number of the device bodies is a plurality, and the control module of each device body is connected with the remote dispatching center through the network module;
the remote dispatching center distributes different IP addresses to the network module of each device body, and each device body is communicated with the remote dispatching center through the IP addresses of the network modules of the device bodies to report the high-voltage cable section fault early warning and the high-voltage cable section position information corresponding to the fault.
Further, the early warning generation unit is used for generating early warning information according to the position of the high-voltage cable section with the fault, the serial number of the device body and the IP address of the network module of the device body, and reporting the early warning information to the remote dispatching center through the network module;
and the remote dispatching center is used for receiving the early warning information, resolving the device body number from the early warning information according to the IP address of the network module, positioning the fault high-voltage line corresponding to the device body number, and resolving the high-voltage cable section position point corresponding to the fault of the fault high-voltage line from the early warning information.
In a second aspect, the invention provides a high-voltage cable insulation data acquisition and fault early warning method, which comprises the following steps:
s1, arranging a device body on each high-voltage line, and arranging a current sensor on a high-voltage cable section of each high-voltage line;
s2, pre-storing position information of the high-voltage cable section corresponding to each current sensor and a normal current threshold range of a grounding conductor of the high-voltage cable section in a storage module of the device body;
s3, the current sensor collects the real-time current value of the grounding conductor of the high-voltage cable section in real time and increases the current value to the device body;
s4, comparing the real-time current value acquired by the current sensor with a normal current threshold range of a corresponding high-voltage cable section grounding conductor stored in advance by the storage module by an analysis module of the device body, judging whether the real-time current value of the current sensor exceeds the normal current threshold range, and informing a fault early warning and positioning module when the real-time current value of the current sensor exceeds the normal current threshold range;
and S5, the fault early warning positioning module positions the high-voltage cable section with the fault according to the position information of the high-voltage cable section where the current sensor with the real-time current value exceeding the normal current threshold range, which is provided by the storage module, and performs early warning.
Further, the step S1 specifically includes the following steps:
s11, arranging a device body on each high-voltage line, and recording the serial number of the device body;
s12, judging whether the high-voltage cable to be detected is a neutral point cable grounded through a small current;
if yes, go to step S14;
if not, go to step S13;
s13, arranging a current sensor at a grounding conductor of the high-voltage cable section, and entering the step S2;
s14. the current sensor is provided at the neutral point earth cable, proceeding to step S2.
Further, the step S4 specifically includes the following steps:
s41, an analysis module of the device body compares a real-time current value acquired by the current sensor with a normal current threshold range of a corresponding high-voltage cable section grounding conductor stored in advance by the storage module;
s42, judging whether the real-time current value acquired by the current sensor exceeds the range of a normal current threshold value;
if yes, go to step S5;
if not, go to step S43;
s43, calculating the current variation of the current sensor in a set time period, predicting the current variation trend of the current sensor, and judging whether the current sensor has a trend exceeding a normal current threshold range;
if yes, go to step S5;
if not, the process returns to step S3.
Further, the step S5 specifically includes the following steps:
s51, when the real-time current value of the current sensor exceeds the range of the normal current threshold value, or the current sensor has the tendency of exceeding the range of the normal current threshold value, the fault early warning positioning module positions the fault high-voltage cable section according to the position information of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module;
and S52, generating early warning information by the fault early warning positioning module according to the position of the high-voltage cable section with the fault and the serial number of the device body.
Further, the method also comprises the following steps:
s6, the device body reports the early warning information to a remote scheduling center through a network module;
and S7, the remote dispatching center analyzes the device body number from the early warning information according to the IP address of the network module, locates the fault high-voltage line corresponding to the device body number, and then analyzes the high-voltage cable section position point corresponding to the fault of the fault high-voltage line from the early warning information.
The beneficial effect of the invention is that,
according to the high-voltage cable insulation data acquisition and fault early warning device and method, the real-time current of the grounding conductor of the high-voltage cable is acquired through the current sensor, so that the automation level of a power grid is improved, automatic alarm before the fault of the high-voltage cable is realized, measures are taken in advance, the running safety of equipment is ensured, the reliable power supply of the power grid is ensured, and unnecessary economic loss caused by sudden power failure is avoided; by monitoring the running condition of the cable in real time and early warning the fault of the cable in advance, the cable is effectively processed before the fault and is repaired or switched in time, so that the service life of the cable is prolonged, the service life of the high-voltage cable is prolonged, and the production and operation cost is saved; the test frequency of tests such as oscillatory wave tests, partial discharge tests and withstand voltage tests which are carried out on the high-voltage cable every year is reduced, the damage and destruction effects are reduced, part of test cost is saved, and the daily maintenance cost is saved; the method and the device can automatically position the fault high-voltage line and the fault high-voltage cable section position point, solve the problem that manual fault point searching wastes time and labor, save a large amount of time and labor and improve the working efficiency.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram I of a high-voltage cable insulation data acquisition and fault early warning device according to the present invention;
FIG. 2 is a schematic structural diagram of a high-voltage cable insulation data acquisition and fault early warning device according to the present invention;
FIG. 3 is a first schematic flow chart of a high-voltage cable insulation data acquisition and fault early warning method according to the present invention;
FIG. 4 is a second schematic flow chart of the high-voltage cable insulation data acquisition and fault early warning method of the present invention;
in the drawings, 1-the apparatus body; 2-a sensor module; 3-a control module; 4-a storage module; 4.1-location storage unit; 4.2-Current value storage cell; 5-a data analysis module; 5.1-a real-time current acquisition unit; 5.2-current range acquisition unit; 5.3-a data analysis unit; 6-fault early warning positioning module; 6.1-fault location unit; 6.2-early warning generation unit; 7-a current sensor; 8-a network module; 9-remote dispatch center.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment 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.
Example 1:
as shown in fig. 1, the invention provides a high-voltage cable insulation data acquisition and fault early warning device, which comprises a device body 1 and a sensor module 2;
a control module 3 is arranged in the device body 1, and the control module 3 is connected with a storage module 4, a data analysis module 5 and a fault early warning positioning module 6; the control module 3 is also connected with the sensor module 2;
the sensor module 2 comprises a plurality of current sensors 7, and each current sensor 7 is arranged at the grounding conductor of each high-voltage cable section and used for detecting the steady-state current of the metal protective layer at the grounding conductor of the high-voltage cable;
the storage module 4 is used for storing the position information of the high-voltage cable section corresponding to each current sensor and the normal current threshold range of the grounding conductor of the high-voltage cable section in advance;
the data analysis module 5 is used for comparing the real-time current value acquired by the current sensor with the normal current threshold range of the grounding conductor of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module, and judging whether the real-time current value of the current sensor exceeds the normal current threshold range or not;
and the fault early warning positioning module 6 is used for positioning the high-voltage cable section with the fault according to the position information of the high-voltage cable section corresponding to the current sensor provided by the storage module when the real-time current value of the current sensor exceeds the normal current threshold range, and carrying out early warning.
Example 2:
as shown in fig. 2, the invention provides a high-voltage cable insulation data acquisition and fault early warning device, which comprises a device body 1 and a sensor module 2;
a control module 3 is arranged in the device body 1, and the control module 3 is connected with a storage module 4, a data analysis module 5 and a fault early warning positioning module 6; the control module 3 is also connected with the sensor module 2;
the sensor module 2 comprises a plurality of current sensors 7, and each current sensor 7 is arranged at the grounding conductor of each high-voltage cable section and used for detecting the steady-state current of the metal protective layer at the grounding conductor of the high-voltage cable; the high-voltage sections are 35KV, 10KV and 6KV high-voltage cable sections;
the storage module 4 is used for storing the position information of the high-voltage cable section corresponding to each current sensor and the normal current threshold range of the grounding conductor of the high-voltage cable section in advance; the storage module 4 comprises a position storage unit 4.1 and a current value storage unit 4.2;
the position storage unit 4.1 is used for storing the serial number of the current sensor and the position information of the high-voltage cable section where the corresponding current sensor is located;
the current value storage unit 4.2 is used for storing the serial number of the current sensor and the normal current threshold range of the grounding conductor of the high-voltage cable section corresponding to the current sensor;
the data analysis module 5 is used for comparing the real-time current value acquired by the current sensor with the normal current threshold range of the grounding conductor of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module, and judging whether the real-time current value of the current sensor exceeds the normal current threshold range or not; the data analysis module 5 comprises a real-time current acquisition unit 5.1, a current range acquisition unit 5.2 and a data analysis unit 5.3;
the real-time current obtaining unit 5.1 is used for obtaining the serial number of the current sensor and the real-time current value collected by the current sensor from the current sensor;
the current range acquisition unit 5.2 is used for acquiring the serial number of the current sensor and the normal current threshold range of the grounding conductor of the high-voltage cable section corresponding to the current sensor from the storage module;
the data analysis unit 5.3 is used for judging whether the real-time current value of the current sensor exceeds the range of the normal current threshold value, calculating the current change trend of the current sensor and judging whether the current sensor has the trend exceeding the range of the normal current threshold value;
the fault early warning positioning module 6 is used for positioning a fault high-voltage cable section according to the position information of the high-voltage cable section corresponding to the current sensor provided by the storage module when the real-time current value of the current sensor exceeds the normal current threshold range, and carrying out early warning; the fault early warning positioning module 6 comprises a fault positioning unit 6.1 and an early warning generation unit 6.2;
the fault positioning unit 6.1 is used for positioning a high-voltage cable section with a fault according to the position information of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module, when the real-time current value of the current sensor exceeds the range of the normal current threshold value or the current sensor has the tendency of exceeding the range of the normal current threshold value;
the early warning generation unit 6.2 is used for generating early warning information according to the position of the high-voltage cable section with the fault and the serial number of the device body;
a network module 8 is also arranged in the device body 1, and the network module 8 is provided with an Ethernet interface;
the device body 1 is also connected with a remote dispatching center 9;
the number of the device bodies 1 is a plurality, and the control module 3 of each device body 1 is connected with a remote dispatching center 9 through a network module 8;
the remote dispatching center 9 allocates different IP addresses to the network module 8 of each device body 2, and each device body 2 communicates with the remote dispatching center 9 through the IP address of the network module 8 and reports the fault early warning of the high-voltage cable section and the position information of the high-voltage cable section corresponding to the fault;
the early warning generation unit 6.2 is also used for generating early warning information according to the position of the high-voltage cable section with the fault, the serial number of the device body and the IP address of the network module of the device body, and reporting the early warning information to the remote dispatching center 9 through the network module;
and the remote dispatching center 9 is used for receiving the early warning information, resolving the device body number from the early warning information according to the IP address of the network module, positioning the fault high-voltage line corresponding to the device body number, and resolving the high-voltage cable section position point corresponding to the fault of the fault high-voltage line from the early warning information.
Example 3:
as shown in fig. 3, the invention provides a high-voltage cable insulation data acquisition and fault early warning method, which comprises the following steps:
s1, arranging a device body on each high-voltage line, and arranging a current sensor on a high-voltage cable section of each high-voltage line;
s2, pre-storing position information of the high-voltage cable section corresponding to each current sensor and a normal current threshold range of a grounding conductor of the high-voltage cable section in a storage module of the device body;
s3, the current sensor collects the real-time current value of the grounding conductor of the high-voltage cable section in real time and increases the current value to the device body;
s4, comparing the real-time current value acquired by the current sensor with a normal current threshold range of a corresponding high-voltage cable section grounding conductor stored in advance by the storage module by an analysis module of the device body, judging whether the real-time current value of the current sensor exceeds the normal current threshold range, and informing a fault early warning and positioning module when the real-time current value of the current sensor exceeds the normal current threshold range;
and S5, the fault early warning positioning module positions the high-voltage cable section with the fault according to the position information of the high-voltage cable section where the current sensor with the real-time current value exceeding the normal current threshold range, which is provided by the storage module, and performs early warning.
In some embodiments, step S1 includes the following steps:
s11, arranging a device body on each high-voltage line, and recording the serial number of the device body;
s12, judging whether the high-voltage cable to be detected is a neutral point cable grounded through a small current;
if yes, go to step S14;
if not, go to step S13;
s13, arranging a current sensor at a grounding conductor of the high-voltage cable section, and entering the step S2;
s14. the current sensor is provided at the neutral point earth cable, proceeding to step S2.
In some embodiments, step S4 includes the following steps:
s41, an analysis module of the device body compares a real-time current value acquired by the current sensor with a normal current threshold range of a corresponding high-voltage cable section grounding conductor stored in advance by the storage module;
s42, judging whether the real-time current value acquired by the current sensor exceeds the range of a normal current threshold value;
if yes, go to step S5;
if not, go to step S43;
s43, calculating the current variation of the current sensor in a set time period, predicting the current variation trend of the current sensor, and judging whether the current sensor has a trend exceeding a normal current threshold range;
if yes, go to step S5;
if not, the process returns to step S3.
In some embodiments, step S5 includes the following steps:
s51, when the real-time current value of the current sensor exceeds the range of the normal current threshold value, or the current sensor has the tendency of exceeding the range of the normal current threshold value, the fault early warning positioning module positions the fault high-voltage cable section according to the position information of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module;
and S52, generating early warning information by the fault early warning positioning module according to the position of the high-voltage cable section with the fault and the serial number of the device body.
In certain embodiments, the method further comprises the steps of:
s6, the device body reports the early warning information to a remote scheduling center through a network module;
and S7, the remote dispatching center analyzes the device body number from the early warning information according to the IP address of the network module, locates the fault high-voltage line corresponding to the device body number, and then analyzes the high-voltage cable section position point corresponding to the fault of the fault high-voltage line from the early warning information.
Example 4:
as shown in fig. 4, the invention provides a high-voltage cable insulation data acquisition and fault early warning method, which comprises the following steps:
s1, arranging a device body on each high-voltage line, and arranging a current sensor on a high-voltage cable section of each high-voltage line; the method comprises the following specific steps:
s11, arranging a device body on each high-voltage line, and recording the serial number of the device body;
s12, judging whether the high-voltage cable to be detected is a neutral point cable grounded through a small current;
if yes, go to step S14;
if not, go to step S13;
s13, arranging a current sensor at a grounding conductor of the high-voltage cable section, and entering the step S2;
s14, arranging a current sensor at the neutral point grounding cable, and entering the step S2;
s2, pre-storing position information of the high-voltage cable section corresponding to each current sensor and a normal current threshold range of a grounding conductor of the high-voltage cable section in a storage module of the device body;
s3, the current sensor collects the real-time current value of the grounding conductor of the high-voltage cable section in real time and increases the current value to the device body;
s4, comparing the real-time current value acquired by the current sensor with a normal current threshold range of a corresponding high-voltage cable section grounding conductor stored in advance by the storage module by an analysis module of the device body, judging whether the real-time current value of the current sensor exceeds the normal current threshold range, and informing a fault early warning and positioning module when the real-time current value of the current sensor exceeds the normal current threshold range; the method comprises the following specific steps:
s41, an analysis module of the device body compares a real-time current value acquired by the current sensor with a normal current threshold range of a corresponding high-voltage cable section grounding conductor stored in advance by the storage module;
s42, judging whether the real-time current value acquired by the current sensor exceeds the range of a normal current threshold value;
if yes, go to step S5;
if not, go to step S43;
s43, calculating the current variation of the current sensor in a set time period, predicting the current variation trend of the current sensor, and judging whether the current sensor has a trend exceeding a normal current threshold range;
if yes, go to step S5;
if not, returning to the step S3;
s5, the fault early warning positioning module positions the high-voltage cable section with the fault according to the position information of the high-voltage cable section where the current sensor with the real-time current value exceeding the normal current threshold value range, which is provided by the storage module, and performs early warning; the method comprises the following specific steps:
s51, when the real-time current value of the current sensor exceeds the range of the normal current threshold value, or the current sensor has the tendency of exceeding the range of the normal current threshold value, the fault early warning positioning module positions the fault high-voltage cable section according to the position information of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module;
s52, generating early warning information by a fault early warning positioning module according to the position of the high-voltage cable section with the fault and the serial number of the device body;
s6, the device body reports the early warning information to a remote scheduling center through a network module;
and S7, the remote dispatching center analyzes the device body number from the early warning information according to the IP address of the network module, locates the fault high-voltage line corresponding to the device body number, and then analyzes the high-voltage cable section position point corresponding to the fault of the fault high-voltage line from the early warning information.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A high-voltage cable insulation data acquisition and fault early warning device is characterized by comprising a device body and a sensor module;
a control module is arranged in the device body and is connected with a storage module, a data analysis module and a fault early warning positioning module; the control module is also connected with the sensor module;
the sensor module comprises a plurality of current sensors, and each current sensor is arranged at the grounding conductor of each high-voltage cable section and used for detecting the steady-state current of the metal protective layer at the grounding conductor of the high-voltage cable;
the storage module is used for pre-storing the position information of the high-voltage cable section corresponding to each current sensor and the normal current threshold range of the grounding conductor of the high-voltage cable section;
the data analysis module is used for comparing the real-time current value acquired by the current sensor with the normal current threshold range of the grounding conductor of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module, and judging whether the real-time current value of the current sensor exceeds the normal current threshold range or not;
and the fault early warning positioning module is used for positioning the high-voltage cable section with the fault according to the position information of the high-voltage cable section corresponding to the current sensor provided by the storage module when the real-time current value of the current sensor exceeds the normal current threshold range, and early warning.
2. The high-voltage cable insulation data acquisition and fault early warning device of claim 1, wherein the high-voltage sections are 35KV, 10KV and 6KV high-voltage cable sections.
3. The high-voltage cable insulation data acquisition and fault early warning device of claim 1, wherein the storage module comprises a position storage unit and a current value storage unit;
the position storage unit is used for storing the serial number of the current sensor and the position information of the high-voltage cable section where the corresponding current sensor is located;
the current value storage unit is used for storing the serial number of the current sensor and the normal current threshold range of the grounding conductor of the high-voltage cable section corresponding to the current sensor;
the data analysis module comprises a real-time current acquisition unit, a current range acquisition unit and a data analysis unit;
the real-time current acquisition unit is used for acquiring the serial number of the current sensor and the real-time current value acquired by the current sensor from the current sensor;
the current range acquisition unit is used for acquiring the serial number of the current sensor and the normal current threshold range of the grounding conductor of the high-voltage cable section corresponding to the current sensor from the storage module;
the data analysis unit is used for judging whether the real-time current value of the current sensor exceeds the range of the normal current threshold value, calculating the current variation trend of the current sensor and judging whether the current sensor has the trend exceeding the range of the normal current threshold value;
the fault early warning positioning module comprises a fault positioning unit and an early warning generation unit;
the fault positioning unit is used for positioning a high-voltage cable section with a fault according to the position information of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module, when the real-time current value of the current sensor exceeds the range of the normal current threshold value or the current sensor has the tendency of exceeding the range of the normal current threshold value;
and the early warning generation unit is used for generating early warning information according to the position of the high-voltage cable section with the fault and the serial number of the device body.
4. The high-voltage cable insulation data acquisition and fault early warning device as claimed in claim 3, wherein a network module is further arranged in the device body, and the network module is provided with an Ethernet interface;
the device body is also connected with a remote dispatching center;
the number of the device bodies is a plurality, and the control module of each device body is connected with the remote dispatching center through the network module;
the remote dispatching center distributes different IP addresses to the network module of each device body, and each device body is communicated with the remote dispatching center through the IP addresses of the network modules of the device bodies to report the high-voltage cable section fault early warning and the high-voltage cable section position information corresponding to the fault.
5. The high-voltage cable insulation data acquisition and fault early warning device of claim 4, wherein the early warning generation unit is configured to generate early warning information according to the location of the faulty high-voltage cable segment, the device body number, and the device body network module IP address, and report the early warning information to the remote dispatching center via the network module;
and the remote dispatching center is used for receiving the early warning information, resolving the device body number from the early warning information according to the IP address of the network module, positioning the fault high-voltage line corresponding to the device body number, and resolving the high-voltage cable section position point corresponding to the fault of the fault high-voltage line from the early warning information.
6. A high-voltage cable insulation data acquisition and fault early warning method is characterized by comprising the following steps:
s1, arranging a device body on each high-voltage line, and arranging a current sensor on a high-voltage cable section of each high-voltage line;
s2, pre-storing position information of the high-voltage cable section corresponding to each current sensor and a normal current threshold range of a grounding conductor of the high-voltage cable section in a storage module of the device body;
s3, the current sensor collects the real-time current value of the grounding conductor of the high-voltage cable section in real time and increases the current value to the device body;
s4, comparing the real-time current value acquired by the current sensor with a normal current threshold range of a corresponding high-voltage cable section grounding conductor stored in advance by the storage module by an analysis module of the device body, judging whether the real-time current value of the current sensor exceeds the normal current threshold range, and informing a fault early warning and positioning module when the real-time current value of the current sensor exceeds the normal current threshold range;
and S5, the fault early warning positioning module positions the high-voltage cable section with the fault according to the position information of the high-voltage cable section where the current sensor with the real-time current value exceeding the normal current threshold range, which is provided by the storage module, and performs early warning.
7. The high-voltage cable insulation data acquisition and fault early warning method as claimed in claim 6, wherein the step S1 comprises the following steps:
s11, arranging a device body on each high-voltage line, and recording the serial number of the device body;
s12, judging whether the high-voltage cable to be detected is a neutral point cable grounded through a small current;
if yes, go to step S14;
if not, go to step S13;
s13, arranging a current sensor at a grounding conductor of the high-voltage cable section, and entering the step S2;
s14. the current sensor is provided at the neutral point earth cable, proceeding to step S2.
8. The high-voltage cable insulation data acquisition and fault early warning method as claimed in claim 6, wherein the step S4 comprises the following steps:
s41, an analysis module of the device body compares a real-time current value acquired by the current sensor with a normal current threshold range of a corresponding high-voltage cable section grounding conductor stored in advance by the storage module;
s42, judging whether the real-time current value acquired by the current sensor exceeds the range of a normal current threshold value;
if yes, go to step S5;
if not, go to step S43;
s43, calculating the current variation of the current sensor in a set time period, predicting the current variation trend of the current sensor, and judging whether the current sensor has a trend exceeding a normal current threshold range;
if yes, go to step S5;
if not, the process returns to step S3.
9. The high-voltage cable insulation data acquisition and fault early warning method as claimed in claim 8, wherein the step S5 comprises the following steps:
s51, when the real-time current value of the current sensor exceeds the range of the normal current threshold value, or the current sensor has the tendency of exceeding the range of the normal current threshold value, the fault early warning positioning module positions the fault high-voltage cable section according to the position information of the high-voltage cable section corresponding to the current sensor, which is provided by the storage module;
and S52, generating early warning information by the fault early warning positioning module according to the position of the high-voltage cable section with the fault and the serial number of the device body.
10. The high-voltage cable insulation data acquisition and fault early warning method of claim 9, further comprising the steps of:
s6, the device body reports the early warning information to a remote scheduling center through a network module;
and S7, the remote dispatching center analyzes the device body number from the early warning information according to the IP address of the network module, locates the fault high-voltage line corresponding to the device body number, and then analyzes the high-voltage cable section position point corresponding to the fault of the fault high-voltage line from the early warning information.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926510A (en) * | 2014-05-12 | 2014-07-16 | 国家电网公司 | Current and carrying capacity online monitoring and fault diagnosing and locating method for cable protection layer |
| CN109212378A (en) * | 2018-09-29 | 2019-01-15 | 北京中恒博瑞数字电力科技有限公司 | Middle and low voltage network Fault Locating Method |
| CN111579978A (en) * | 2020-05-18 | 2020-08-25 | 刘柱华 | System and method for realizing relay fault identification based on artificial intelligence technology |
| CN112363008A (en) * | 2020-09-17 | 2021-02-12 | 广州长川科技有限公司 | Cable fault and running state comprehensive monitoring method and system |
| CN112834871A (en) * | 2019-11-25 | 2021-05-25 | 国网江苏省电力有限公司南京供电分公司 | High-voltage long-section cable insulation fault online monitoring system and method |
| CN113109733A (en) * | 2021-03-23 | 2021-07-13 | 兰州资源环境职业技术学院 | Overhead cable short circuit grounding fault detection system based on wireless sensor network |
-
2021
- 2021-11-18 CN CN202111370564.0A patent/CN114295941A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926510A (en) * | 2014-05-12 | 2014-07-16 | 国家电网公司 | Current and carrying capacity online monitoring and fault diagnosing and locating method for cable protection layer |
| CN109212378A (en) * | 2018-09-29 | 2019-01-15 | 北京中恒博瑞数字电力科技有限公司 | Middle and low voltage network Fault Locating Method |
| CN112834871A (en) * | 2019-11-25 | 2021-05-25 | 国网江苏省电力有限公司南京供电分公司 | High-voltage long-section cable insulation fault online monitoring system and method |
| CN111579978A (en) * | 2020-05-18 | 2020-08-25 | 刘柱华 | System and method for realizing relay fault identification based on artificial intelligence technology |
| CN112363008A (en) * | 2020-09-17 | 2021-02-12 | 广州长川科技有限公司 | Cable fault and running state comprehensive monitoring method and system |
| CN113109733A (en) * | 2021-03-23 | 2021-07-13 | 兰州资源环境职业技术学院 | Overhead cable short circuit grounding fault detection system based on wireless sensor network |
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