CN111830452B - Method and simulation equipment for verifying reliability of double-end ranging positioning formula - Google Patents
Method and simulation equipment for verifying reliability of double-end ranging positioning formula Download PDFInfo
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- CN111830452B CN111830452B CN202010712269.8A CN202010712269A CN111830452B CN 111830452 B CN111830452 B CN 111830452B CN 202010712269 A CN202010712269 A CN 202010712269A CN 111830452 B CN111830452 B CN 111830452B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The application provides a method and simulation equipment for verifying reliability of a double-end ranging positioning formula, wherein the method comprises the following steps: the signal generator is used for generating a target simulation fault signal at a target position of the simulation line; the first synchronous clock device is used for acquiring a first time stamp t of the received first analog fault signal 1 The method comprises the steps of carrying out a first treatment on the surface of the The second synchronous clock device is used for acquiring a second timestamp t of the received second analog fault signal 2 The method comprises the steps of carrying out a first treatment on the surface of the The industrial personal computer is used for controlling the transmission speed v of the target simulation fault signal in the simulation line according to the total length L of the simulation line and the first time stamp t 1 And a second timestamp t 2 Calculating the fault distance x by using a double-end ranging positioning formula Calculation of The method comprises the steps of carrying out a first treatment on the surface of the At the calculated fault distance x Calculation of Distance from actual fault x Actual practice is that of Under the condition of matching, the double-end ranging positioning formula is determined to be suitable for fault position detection of the gas insulated transmission line GIL. And a test base is not required to be built, so that the economic cost and the time cost are reduced.
Description
Technical Field
The application relates to the technical field of electrical equipment monitoring, in particular to a method and simulation equipment for verifying reliability of a double-end ranging positioning formula.
Background
The gas insulated transmission line (Gas insulated metal enclosed transmission line, GIL) has the characteristic of being suitable for severe environments, and is widely applied to occasions with large altitude fall or severe meteorological conditions. Once the GIL fails, the power system may be compromised.
When discharge faults occur in the GIL, a rapid transient process occurs, and fault voltage traveling waves propagate to the two ends of the GIL. The location of the fault in the GIL may be determined using a double-ended ranging location formula. In order to verify the reliability of the double-end ranging positioning formula and determine the fault positioning accuracy, repeated tests are needed.
In the prior art, a test for verifying the reliability of a double-end ranging positioning formula is performed by constructing a test base. However, this approach requires a large investment of capital and a large amount of time, resulting in greater economic and time costs.
Disclosure of Invention
The application provides a method and simulation equipment for verifying the reliability of a double-end ranging positioning formula, which are used for solving the problem that in the prior art, a test for verifying the reliability of the double-end ranging positioning formula is performed in a mode of building a test base. This approach requires a large investment of capital and a large amount of time, resulting in the problem of consuming more economic and time costs.
In a first aspect, the present invention provides a method for verifying reliability of a double-end ranging positioning formula, applied to an analog device, where the analog device includes an analog line, a signal generator, a first synchronous clock device, a second synchronous clock device, and an industrial personal computer, the analog line includes multiple segments of coaxial cables and multiple capacitors to ground, one capacitor to ground is connected in parallel between any two adjacent coaxial cables in the multiple segments of coaxial cables, a first end of the analog line is connected with a first end of the first synchronous clock device, a second end of the first synchronous clock device is connected with the industrial personal computer, and a second end of the analog line is connected with a first end of the second synchronous clock device, and a second end of the second synchronous clock device is connected with the industrial personal computer, where the method includes:
the signal generator is used for generating a target simulation fault signal at a target position of the simulation line;
the first synchronous clock device is used for acquiring a first time stamp t of a received first analog fault signal 1 And sending the first timestamp t to the industrial personal computer 1 The first simulated fault signal is a target simulated fault signal which propagates in the direction of the first end of the simulated line in the target simulated fault signal;
the second synchronous clock device is used for acquiring a second timestamp t of the received second analog fault signal 2 And sending the second timestamp t to the industrial personal computer 2 Wherein the second simulated fault signal is a target simulated fault signal propagating in the direction of the second end of the simulated line from among the target simulated fault signals;
the industrial personal computer is used for controlling the transmission speed v of the target simulation fault signal in the simulation line according to the total length L of the simulation line and the first timestamp t 1 And said second timestamp t 2 Calculating the fault distance x by using a double-end ranging positioning formula Calculation of ；
At the calculated fault distance x Calculation of Distance from actual fault x Actual practice is that of Under the condition of matching, determining that the double-end ranging positioning formula is suitable for fault position detection of the gas-insulated power transmission line GILMeasuring, wherein the actual fault distance x Actual practice is that of For the distance between the target position and the first end of the analog line, the analog line is a line obtained by simulating the GIL, and the double-end ranging positioning formula is:
optionally, the analog device further includes a first optical fiber transceiver and a second optical fiber transceiver, the first synchronous clock device includes a first electro-optical conversion device, the second synchronous clock device includes a second electro-optical conversion device, a first end of the first optical fiber transceiver is connected with a second end of the first synchronous clock device, a second end of the first optical fiber transceiver is connected with the industrial computer, a first end of the second optical fiber transceiver is connected with a second end of the second synchronous clock device, a second end of the second optical fiber transceiver is connected with the industrial computer, and the first timestamp t 1 Is a first electric signal, the second time stamp t 2 Is a second electrical signal;
the first electro-optical conversion device is used for converting the first electric signal into a first optical signal and transmitting the first optical signal to the first optical fiber transceiver;
the first optical fiber transceiver is used for converting the first optical signal into a first target electric signal and sending the first target electric signal to the industrial personal computer;
the second electro-optical conversion device is configured to convert the second electrical signal into a second optical signal, and send the second optical signal to the second optical fiber transceiver;
the second optical fiber transceiver is used for converting the second optical signal into a second target electric signal and sending the second target electric signal to the industrial personal computer.
Optionally, the simulation device further comprises a first disc electrode, a first steep wave sensor, a second disc electrode and a second steep wave sensor;
the first end of the analog circuit is connected with the first disc electrode, the first steep wave sensor is connected with the first end of the first synchronous clock device, and a first space capacitor is formed between the first disc electrode and the high-voltage arm electrode of the first steep wave sensor;
the second end of the analog circuit is connected with the second disc electrode, the second steep wave sensor is connected with the first end of the second synchronous clock device, and a second space capacitor is formed between the second disc electrode and the high-voltage arm electrode of the second steep wave sensor.
Optionally, the analog device further comprises a router;
the first end of the router is connected with the second end of the first optical fiber transceiver, the second end of the router is connected with the second end of the second optical fiber transceiver, and the third end of the router is connected with the industrial personal computer;
the router is used for receiving the first target electric signal sent by the first optical fiber transceiver and sending the first target electric signal to the industrial personal computer;
the router is used for receiving the second target electric signal sent by the second optical fiber transceiver and sending the second target electric signal to the industrial personal computer.
As can be seen from the above technical solution, the method and the analog device for verifying reliability of a double-end ranging positioning formula provided by the embodiments of the present invention, where the analog device includes an analog line, a signal generator, a first synchronous clock device, a second synchronous clock device, and an industrial personal computer, the analog line includes multiple segments of coaxial cables and multiple capacitors to ground, one capacitor to ground is connected in parallel between any two adjacent coaxial cables in the multiple segments of coaxial cables, a first end of the analog line is connected with a first end of the first synchronous clock device, a second end of the first synchronous clock device is connected with the industrial personal computer, a second end of the analog line is connected with a first end of the second synchronous clock device, and a second end of the second synchronous clock device is connected with the industrial personal computer, where the method includes: the signal generator is used for generating a signal whenGenerating a target simulation fault signal at a target position of the simulation line; the first synchronous clock device is used for acquiring a first time stamp t of a received first analog fault signal 1 And sending the first timestamp t to the industrial personal computer 1 The first simulated fault signal is a target simulated fault signal which propagates in the direction of the first end of the simulated line in the target simulated fault signal; the second synchronous clock device is used for acquiring a second timestamp t of the received second analog fault signal 2 And sending the second timestamp t to the industrial personal computer 2 Wherein the second simulated fault signal is a target simulated fault signal propagating in the direction of the second end of the simulated line from among the target simulated fault signals; the industrial personal computer is used for controlling the transmission speed v of the target simulation fault signal in the simulation line according to the total length L of the simulation line and the first timestamp t 1 And said second timestamp t 2 Calculating the fault distance x by using a double-end ranging positioning formula Calculation of The method comprises the steps of carrying out a first treatment on the surface of the At the calculated fault distance x Calculation of Distance from actual fault x Actual practice is that of Under the condition of matching, determining that the double-end ranging positioning formula is suitable for fault position detection of the gas-insulated power transmission line GIL, wherein the actual fault distance x Actual practice is that of For the distance between the target position and the first end of the analog line, the analog line is a line obtained by simulating the GIL, and the double-end ranging positioning formula is:
thus, the simulation equipment is utilized to perform the reliability verification of the double-end ranging positioning formula. At the calculated fault distance x Calculation of Distance from actual fault x Actual practice is that of Under the condition of matching, the double-end ranging positioning formula can be determined to be suitable for fault location detection of the GIL. And a test base is not required to be built, so that the economic cost and the time cost are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a flow chart of a method for verifying the reliability of a double-ended ranging positioning equation provided by the present invention;
FIG. 2 is a schematic diagram of an analog device according to the present invention;
FIG. 3 is a schematic diagram of another simulation apparatus provided by the present invention;
FIG. 4 is a schematic diagram of another simulation apparatus provided by the present invention;
FIG. 5 is a schematic diagram of another simulation apparatus provided by the present invention;
fig. 6 is a schematic diagram of a circuit board of a capacitor to ground according to the present invention.
Detailed Description
Reference will now be made in detail to the embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the examples below do not represent all embodiments consistent with the present application. Merely as examples of systems and methods consistent with some aspects of the present application as detailed in the claims.
Referring to fig. 1, fig. 1 is a flowchart of a method for verifying the reliability of a double-end ranging positioning formula, which is provided by the invention and is applied to simulation equipment. Fig. 2 is a schematic diagram of an analog device according to the present invention. The analog device comprises an analog line, a signal generator 1, a first synchronous clock device 2, a second synchronous clock device 3 and an industrial personal computer 4. The analog circuit comprises a plurality of sections of coaxial cables 5 and a plurality of grounding capacitors 6, wherein one grounding capacitor 6 is connected between any two adjacent sections of coaxial cables 5 in parallel in the plurality of sections of coaxial cables 5. The first end of the analog circuit is connected with the first end of the first synchronous clock device 2, the second end of the first synchronous clock device 2 is connected with the industrial personal computer 4, the second end of the analog circuit is connected with the first end of the second synchronous clock device 3, and the second end of the second synchronous clock device 3 is connected with the industrial personal computer 4. As shown in fig. 1, the method comprises the following steps:
In step 101, the capacitance and inductance parameters of GIL are 50-60 pF/m and 0.2-0.5 μH/m, respectively. And the capacitance and inductance parameters of the coaxial cable are 57pF/m and 0.46 mu H/m respectively, which are close to the capacitance and inductance parameters of the GIL. Therefore, the coaxial cable can better simulate the GIL; the capacitance parameter of the basin-type insulator arranged along the line on the GIL is generally 30-50 pF, and a capacitor with the size of 30pF can be connected in parallel between each section of coaxial cable to simulate the basin-type insulator arranged along the line on the GIL.
In the present invention, since the length of the individual unit GIL is 6m, 20 pieces of 6m long coaxial cable can be connected to simulate a 120m long GIL. A capacitor to ground is connected in parallel between each section of coaxial cable to simulate a basin-type insulator installed along the line on the GIL.
The signal generator 1 may be connected to the coaxial cable 5 by a three-way connector of a denier-Kang Saiman bayonet (Bayonet Nut Connect, BNC) for generating a target analog fault signal at a target location of the analog line such that the target analog fault signal propagates to both ends of the analog line. Preferably, the amplitude of the pulse signal output by the signal generator 1 may be 3V, the period may be 20Hz, the pulse width may be 5 μs, the rising and falling edge time may be 20ns, and the output impedance of the signal generator 1 may be set to 50Ω. The signal generator 1 may generate 20 target simulated fault signals per second, and may count a total of 120s of 2400 sets of data for positioning error result analysis.
In step 102, the trigger voltage of the first synchronous clock device 2 may be set to 1V and the deviation may be set to 0ns. The first synchronous clock device 2 is used for acquiring a first time stamp t of a received first analog fault signal 1 And sends a first time stamp t to the industrial personal computer 4 1 . The first simulated fault signal is a target simulated fault signal which propagates in the direction of the first end of the simulated line in the target simulated fault signal.
In step 103, the trigger voltage of the second synchronous clock device 3 may be set to 1V and the deviation may be set to 0ns. The second synchronous clock device 3 is used for acquiring a second timestamp t of the received second analog fault signal 2 And sends a second time stamp t to the industrial personal computer 4 2 . The second analog fault signal is a target analog fault signal which propagates in the direction of the second end of the analog line in the target analog fault signal.
In step 104, the industrial personal computer 4 is configured to, according to the total length L of the analog line, the propagation velocity v of the target analog fault signal in the analog line, and the first timestamp t 1 And a second timestamp t 2 Calculating the fault distance x by using a double-end ranging positioning formula Calculation of 。
in step 105, at the calculated failure distance x Calculation of Distance from actual fault x Actual practice is that of Under the condition of matching, the double-end ranging positioning formula can be determined to be suitable for fault position detection of the gas-insulated power transmission line GIL. Wherein the actual fault distance x Actual practice is that of For the distance between the target position and the first end of the analog line, the analog line is a line obtained by simulating GIL, and the double-end ranging positioning formula is:
in the prior art, a test for verifying the reliability of the double-end ranging positioning formula is performed by constructing a test base. However, this approach requires a large investment of capital and a large amount of time, resulting in greater economic and time costs.
In the invention, the reliability verification of the double-end ranging positioning formula is performed by using analog equipment. At the calculated fault distance x Calculation of Distance from actual fault x Actual practice is that of Under the condition of matching, the double-end ranging positioning formula can be determined to be suitable for fault location detection of the GIL. And a test base is not required to be built, so that the economic cost and the time cost are reduced.
Optionally, the analog device further includes a first optical fiber transceiver and a second optical fiber transceiver, the first synchronous clock device includes a first electro-optic conversion device therein, and the second synchronous clock device includes a second electro-optic conversion device thereinThe first end of the first optical fiber transceiver is connected with the second end of the first synchronous clock device, the second end of the first optical fiber transceiver is connected with the industrial personal computer, the first end of the second optical fiber transceiver is connected with the second end of the second synchronous clock device, the second end of the second optical fiber transceiver is connected with the industrial personal computer, and the first timestamp t 1 Is a first electric signal, the second time stamp t 2 Is a second electrical signal;
the first electro-optical conversion device is used for converting the first electric signal into a first optical signal and transmitting the first optical signal to the first optical fiber transceiver;
the first optical fiber transceiver is used for converting the first optical signal into a first target electric signal and sending the first target electric signal to the industrial personal computer;
the second electro-optical conversion device is configured to convert the second electrical signal into a second optical signal, and send the second optical signal to the second optical fiber transceiver;
the second optical fiber transceiver is used for converting the second optical signal into a second target electric signal and sending the second target electric signal to the industrial personal computer.
As shown in fig. 3, a schematic diagram of another simulation apparatus provided by the present invention is shown. The analog device may further include a first optical fiber transceiver 7 and a second optical fiber transceiver 8, the first synchronous clock device 2 may include a first electro-optical conversion device therein, the second synchronous clock device 3 may include a second electro-optical conversion device therein, a first end of the first optical fiber transceiver 7 is connected to a second end of the first synchronous clock device 2, a second end of the first optical fiber transceiver 7 is connected to the industrial personal computer 4, a first end of the second optical fiber transceiver 8 is connected to a second end of the second synchronous clock device 3, and a second end of the second optical fiber transceiver 8 is connected to the industrial personal computer 4. First timestamp t 1 May be a first electrical signal, a second timestamp t 2 May be the second electrical signal.
The first electro-optical conversion device is configured to convert the first electrical signal into a first optical signal, and transmit the first optical signal to the first optical fiber transceiver 7 through an optical fiber. The first optical fiber transceiver 7 is configured to convert the received first optical signal into a first target electrical signal, and send the first target electrical signal to the industrial personal computer 4.
The second electro-optical conversion device is configured to convert the second electrical signal into a second optical signal and transmit the second optical signal to the second optical fiber transceiver 8. The second optical fiber transceiver 8 is configured to convert the received second optical signal into a second target electrical signal, and send the second target electrical signal to the industrial personal computer 4. In this way, the electrical signal is converted into an optical signal and the optical signal is transmitted in the optical fiber. The anti-interference performance is strong, and the signal attenuation is low.
Optionally, the simulation device further comprises a first disc electrode, a first steep wave sensor, a second disc electrode and a second steep wave sensor;
the first end of the analog circuit is connected with the first disc electrode, the first steep wave sensor is connected with the first end of the first synchronous clock device, and a first space capacitor is formed between the first disc electrode and the high-voltage arm electrode of the first steep wave sensor;
the second end of the analog circuit is connected with the second disc electrode, the second steep wave sensor is connected with the first end of the second synchronous clock device, and a second space capacitor is formed between the second disc electrode and the high-voltage arm electrode of the second steep wave sensor.
As shown in fig. 4, a schematic diagram of another simulation apparatus provided by the present invention is shown. The simulation device may further comprise a first disc electrode 9, a first steep wave sensor 10, a second disc electrode 11 and a second steep wave sensor 12.
The first end of the analog line is connected with the first disk electrode 9, the first steep wave sensor 10 is connected with the first end of the first synchronous clock device 2, and a first space capacitor is formed between the first disk electrode 9 and the high-voltage arm electrode of the first steep wave sensor 10. Namely, air is used as an insulating medium between the first disk electrode 9 and the high-voltage arm electrode of the first steep wave sensor 10, and the space stray capacitance between the two parallel plates is the high-voltage arm capacitance of the first steep wave sensor 10. A first space capacitance is formed between the first disk electrode 9 and the high-voltage arm electrode of the first steep wave sensor 10 so that the first analog fault signal can be transmitted to the side of the first steep wave sensor 10.
The second end of the analog line is connected with a second disc electrode 11, the second steep wave sensor 12 is connected with the first end of the second synchronous clock device 3, and a second space capacitor is formed between the second disc electrode 11 and the high-voltage arm electrode of the second steep wave sensor 12. Namely, air is used as an insulating medium between the second disc electrode 11 and the high-voltage arm electrode of the second steep wave sensor 12, and the space stray capacitance between the two parallel plates is the high-voltage arm capacitance of the second steep wave sensor 12. A second space capacitance is formed between the second disc electrode 11 and the high-voltage arm electrode of the second steep wave sensor 12 so that a second analog fault signal can be transmitted to the side of the second steep wave sensor 12.
Optionally, the analog device further comprises a router;
the first end of the router is connected with the second end of the first optical fiber transceiver, the second end of the router is connected with the second end of the second optical fiber transceiver, and the third end of the router is connected with the industrial personal computer;
the router is used for receiving the first target electric signal sent by the first optical fiber transceiver and sending the first target electric signal to the industrial personal computer;
the router is used for receiving the second target electric signal sent by the second optical fiber transceiver and sending the second target electric signal to the industrial personal computer.
Fig. 5 is a schematic diagram of another simulation apparatus according to the present invention. The analog device may also include a router 13.
The first end of the router 13 is connected to the second end of the first optical fiber transceiver 7, the second end of the router 13 is connected to the second end of the second optical fiber transceiver 8, and the third end of the router 13 is connected to the industrial personal computer 4. The router 13 is configured to receive the first target electrical signal sent by the first optical fiber transceiver 7, and send the first target electrical signal to the industrial personal computer 4; the router 13 is further configured to receive the second target electrical signal sent by the second optical fiber transceiver 8, and send the second target electrical signal to the industrial personal computer 4.
Fig. 6 is a schematic diagram of a circuit board of a capacitor to ground according to the present invention. The capacitance to ground 6 is soldered to a printed circuit board (Printed Circuit Board, PCB). The fixing holes 14 on the PCB serve as fixing functions. In use, a first denier-Kang Saiman Bayonet (BNC) connector is soldered to the first BNC interface 15, a first BNC copper core is soldered to the first BNC copper core aperture 17, and a first BNC ground pin is soldered to the first BNC ground aperture 19; the second BNC connector is soldered to the second BNC interface 16, the second BNC copper core is soldered to the second BNC copper core hole 18, and the second BNC grounding pin is soldered to the second BNC grounding hole 20. Wherein the first BNC connector and the second BNC connector are two BNC connectors at two ends of the coaxial cable 5. The capacitor is soldered between the first pad 21 and the second pad 22, wherein the second pad 22 is grounded.
As can be seen from the above technical solution, the method for verifying the reliability of the double-end ranging positioning formula provided by the embodiment of the present invention is applied to an analog device, where the analog device includes an analog line, a signal generator, a first synchronous clock device, a second synchronous clock device and an industrial personal computer, the analog line includes multiple segments of coaxial cables and multiple capacitors to ground, one capacitor to ground is connected in parallel between any two adjacent coaxial cables in the multiple segments of coaxial cables, a first end of the analog line is connected with a first end of the first synchronous clock device, a second end of the first synchronous clock device is connected with the industrial personal computer, a second end of the analog line is connected with a first end of the second synchronous clock device, and a second end of the second synchronous clock device is connected with the industrial personal computer, where the method includes: the signal generator is used for generating a target simulation fault signal at a target position of the simulation line; the first synchronous clock device is used for acquiring a first time stamp t of a received first analog fault signal 1 And sending the first timestamp t to the industrial personal computer 1 The first simulated fault signal is a target simulated fault signal which propagates in the direction of the first end of the simulated line in the target simulated fault signal; the second synchronous clock device is used for acquiring the received second simulation eventSecond timestamp t of Barrier Signal 2 And sending the second timestamp t to the industrial personal computer 2 Wherein the second simulated fault signal is a target simulated fault signal propagating in the direction of the second end of the simulated line from among the target simulated fault signals; the industrial personal computer is used for controlling the transmission speed v of the target simulation fault signal in the simulation line according to the total length L of the simulation line and the first timestamp t 1 And said second timestamp t 2 Calculating the fault distance x by using a double-end ranging positioning formula Calculation of The method comprises the steps of carrying out a first treatment on the surface of the At the calculated fault distance x Calculation of Distance from actual fault x Actual practice is that of Under the condition of matching, determining that the double-end ranging positioning formula is suitable for fault position detection of the gas-insulated power transmission line GIL, wherein the actual fault distance x Actual practice is that of For the distance between the target position and the first end of the analog line, the analog line is a line obtained by simulating the GIL, and the double-end ranging positioning formula is:
thus, the simulation equipment is utilized to perform the reliability verification of the double-end ranging positioning formula. At the calculated fault distance x Calculation of Distance from actual fault x Actual practice is that of Under the condition of matching, the double-end ranging positioning formula can be determined to be suitable for fault location detection of the GIL. And a test base is not required to be built, so that the economic cost and the time cost are reduced.
The foregoing detailed description of the embodiments is merely illustrative of the general principles of the present application and should not be taken in any way as limiting the scope of the invention. Any other embodiments developed in accordance with the present application without inventive effort are within the scope of the present application for those skilled in the art.
Claims (2)
1. The method is applied to analog equipment, and is characterized in that the analog equipment comprises an analog circuit, a signal generator, a first synchronous clock device, a second synchronous clock device and an industrial personal computer, wherein the analog circuit comprises a plurality of sections of coaxial cables and a plurality of grounding capacitors, one grounding capacitor is connected in parallel between any two adjacent sections of coaxial cables in the plurality of sections of coaxial cables, a first end of the analog circuit is connected with a first end of the first synchronous clock device, a second end of the first synchronous clock device is connected with the industrial personal computer, a second end of the analog circuit is connected with a first end of the second synchronous clock device, and a second end of the second synchronous clock device is connected with the industrial personal computer;
the simulation equipment further comprises a first optical fiber transceiver, a second optical fiber transceiver, a first disc electrode, a first steep wave sensor, a second disc electrode and a second steep wave sensor;
the first synchronous clock device comprises a first electro-optical conversion device, the second synchronous clock device comprises a second electro-optical conversion device, a first end of the first optical fiber transceiver is connected with a second end of the first synchronous clock device, a second end of the first optical fiber transceiver is connected with the industrial personal computer, a first end of the second optical fiber transceiver is connected with a second end of the second synchronous clock device, a second end of the second optical fiber transceiver is connected with the industrial personal computer, a first time stamp is a first electric signal, and a second time stamp is a second electric signal;
the first electro-optical conversion device is used for converting the first electric signal into a first optical signal and transmitting the first optical signal to the first optical fiber transceiver;
the first optical fiber transceiver is used for converting the first optical signal into a first target electric signal and sending the first target electric signal to the industrial personal computer;
the second electro-optical conversion device is configured to convert the second electrical signal into a second optical signal, and send the second optical signal to the second optical fiber transceiver;
the second optical fiber transceiver is used for converting the second optical signal into a second target electric signal and sending the second target electric signal to the industrial personal computer;
the first end of the analog circuit is connected with the first disc electrode, the first steep wave sensor is connected with the first end of the first synchronous clock device, and a first space capacitor is formed between the first disc electrode and the high-voltage arm electrode of the first steep wave sensor;
the second end of the analog circuit is connected with the second disc electrode, the second steep wave sensor is connected with the first end of the second synchronous clock device, and a second space capacitor is formed between the second disc electrode and the high-voltage arm electrode of the second steep wave sensor;
the method comprises the following steps:
the signal generator is used for generating a target simulation fault signal at a target position of the simulation line;
the first synchronous clock device is used for acquiring a first time stamp t of a received first analog fault signal 1 And sending the first timestamp t to the industrial personal computer 1 The first simulated fault signal is a target simulated fault signal which propagates in the direction of the first end of the simulated line in the target simulated fault signal;
the second synchronous clock device is used for acquiring a second timestamp t of the received second analog fault signal 2 And sending the second timestamp t to the industrial personal computer 2 Wherein the second simulated fault signal is a target simulated fault signal propagating in the direction of the second end of the simulated line from among the target simulated fault signals;
the industrial personal computer is used for controlling the transmission speed v of the target simulation fault signal in the simulation line according to the total length L of the simulation line and the first timestamp t 1 And said second timestamp t 2 Calculating the fault distance x by using a double-end ranging positioning formula Calculation of ；
At the calculated fault distance x Calculation of Distance from actual fault x Actual practice is that of In the case of a match, determining the double endThe ranging and positioning formula is suitable for fault location detection of the gas insulated transmission line GIL, wherein the actual fault distance x Actual practice is that of For the distance between the target position and the first end of the analog line, the analog line is a line obtained by simulating the GIL, and the double-end ranging positioning formula is:
2. the method of claim 1, wherein the analog device further comprises a router;
the first end of the router is connected with the second end of the first optical fiber transceiver, the second end of the router is connected with the second end of the second optical fiber transceiver, and the third end of the router is connected with the industrial personal computer;
the router is used for receiving the first target electric signal sent by the first optical fiber transceiver and sending the first target electric signal to the industrial personal computer;
the router is used for receiving the second target electric signal sent by the second optical fiber transceiver and sending the second target electric signal to the industrial personal computer.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012150232A1 (en) * | 2011-05-03 | 2012-11-08 | Alstom Technology Ltd | Device and method for detecting and locating a fault on a gas-insulated coaxial electrical cable |
| WO2012174827A1 (en) * | 2011-06-24 | 2012-12-27 | 中国电力科学研究院 | Physical real-time dynamic simulation device for flexible direct-current transmission system |
| CN102854430A (en) * | 2011-06-29 | 2013-01-02 | 上海电缆研究所 | Method and system for testing swinging cross or breaking of multi-core cable |
| CN105093075A (en) * | 2015-08-04 | 2015-11-25 | 国家电网公司 | Cable partial discharge positioning system and method based on travelling wave principle |
| CN106124925A (en) * | 2016-06-12 | 2016-11-16 | 广东电网有限责任公司惠州供电局 | The distance-finding method of transmission line malfunction and device and locating verification method and system |
| CN106443353A (en) * | 2016-10-26 | 2017-02-22 | 中国电力科学研究院 | Traveling wave based GIL discharge fault locating method and device |
| CN106707104A (en) * | 2016-12-22 | 2017-05-24 | 广州智丰电气科技有限公司 | 10kV distribution network cable line fault location simulation device |
| CN110174590A (en) * | 2019-05-22 | 2019-08-27 | 国网江苏省电力有限公司连云港供电分公司 | A kind of power cable resultant fault test simulation system and method |
| CN111426922A (en) * | 2020-04-29 | 2020-07-17 | 云南电网有限责任公司电力科学研究院 | GI L discharge fault positioning system and method based on steep slope |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084262A (en) * | 1976-05-28 | 1978-04-11 | Westinghouse Electric Corporation | Digital monitor having memory readout by the monitored system |
| CN103688434B (en) * | 2011-07-21 | 2017-03-22 | 西门子公司 | Fault identification and location in a power supply line which is fed from one side |
| CN204028337U (en) * | 2014-02-25 | 2014-12-17 | 中国南方电网有限责任公司超高压输电公司柳州局 | Travelling wave ranging calibration equipment |
| CN103969554A (en) * | 2014-05-30 | 2014-08-06 | 智友光电技术发展有限公司 | Online failure positioning device for high voltage cable line and positioning method thereof |
| US10564246B2 (en) * | 2015-10-13 | 2020-02-18 | Schweitzer Engineering Laboratories, Inc. | Testing system for traveling wave fault detectors |
| CN109061382A (en) * | 2018-08-06 | 2018-12-21 | 长沙理工大学 | A kind of electrical power distribution network fault location method based on the multiterminal traveling wave time difference |
| CN209373028U (en) * | 2018-10-29 | 2019-09-10 | 云南电网有限责任公司德宏供电局 | Travelling wave ranging equipment verification device and can self-test travelling wave ranging system |
| CN109856590B (en) * | 2018-12-10 | 2023-09-29 | 云南电网有限责任公司德宏供电局 | Verification method and device |
-
2020
- 2020-07-22 CN CN202010712269.8A patent/CN111830452B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012150232A1 (en) * | 2011-05-03 | 2012-11-08 | Alstom Technology Ltd | Device and method for detecting and locating a fault on a gas-insulated coaxial electrical cable |
| WO2012174827A1 (en) * | 2011-06-24 | 2012-12-27 | 中国电力科学研究院 | Physical real-time dynamic simulation device for flexible direct-current transmission system |
| CN102854430A (en) * | 2011-06-29 | 2013-01-02 | 上海电缆研究所 | Method and system for testing swinging cross or breaking of multi-core cable |
| CN105093075A (en) * | 2015-08-04 | 2015-11-25 | 国家电网公司 | Cable partial discharge positioning system and method based on travelling wave principle |
| CN106124925A (en) * | 2016-06-12 | 2016-11-16 | 广东电网有限责任公司惠州供电局 | The distance-finding method of transmission line malfunction and device and locating verification method and system |
| CN106443353A (en) * | 2016-10-26 | 2017-02-22 | 中国电力科学研究院 | Traveling wave based GIL discharge fault locating method and device |
| CN106707104A (en) * | 2016-12-22 | 2017-05-24 | 广州智丰电气科技有限公司 | 10kV distribution network cable line fault location simulation device |
| CN110174590A (en) * | 2019-05-22 | 2019-08-27 | 国网江苏省电力有限公司连云港供电分公司 | A kind of power cable resultant fault test simulation system and method |
| CN111426922A (en) * | 2020-04-29 | 2020-07-17 | 云南电网有限责任公司电力科学研究院 | GI L discharge fault positioning system and method based on steep slope |
Non-Patent Citations (2)
| Title |
|---|
| 姜运 等.配电网故障行波定位动模实验平台.《电力科学与技术学报》.2017,第32卷(第3期),第81-85页. * |
| 徐策.基于陡波检测的GIL故障定位系统研究.《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》.2022,(第2022/01期),C042-2194. * |
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