CN102914730A - OPPC (Optical Fiber Composite Phase Conductor) connector box dry withstand voltage test device and test method - Google Patents
OPPC (Optical Fiber Composite Phase Conductor) connector box dry withstand voltage test device and test method Download PDFInfo
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Abstract
The invention relates to an OPPC (Optical Fiber Composite Phase Conductor) connector box dry withstand voltage test device and a test method. The OPPC connector body dry withstand voltage test device comprises a connector box (1), a test auxiliary extended OPPC optical cable (4), a test auxiliary extended ADSS (All-Dielectric Self-Supporting) optical cable (5), a voltage source and an optical attenuation monitor (7), wherein a high-voltage positive electrode (3) of the voltage source is connected with an upper box body of the connector box (1) through an applied voltage circuit (2), a high-voltage negative electrode of the voltage source is connected with the ground, one end of the test auxiliary extended OPPC optical cable (4) is connected with the upper box body of the connector box (1), the other end of the test auxiliary extended OPPC optical cable (4) is connected with the optical attenuation monitor (7) through a tail fiber (6), one end of the test auxiliary extended ADSS optical cable (5) is connected with a lower box body of the connector box (1), and the other end of the test auxiliary extended ADSS optical cable (5) is connected with the optical attenuation monitor (7) through the tail fiber (6). The OPPC connector body dry withstand voltage test device and the test method, disclosed by the invention, can be used for simulating and testing the withstand voltage performance of the OPPC connector boxes in different nominal voltage classes in an OPPC operating circuit under a corresponding dry withstand voltage condition.
Description
Technical field
The present invention relates to the communication of power system technical field, be specifically related to a kind of optical phase conductor connector box dry withstand voltage test unit and test method.
Background technology
Optical phase conductor is a kind of novel electric power special optical cable, possesses the function of wire and communications optical cable, in the electric pressure transmission lines of electricity such as China power domain 10kV, 35kV, 110kV and 220kV exploratory application has been arranged.
The optical phase conductor connector box is indispensable in an OPPC application in line constructions device, and its corresponding Performance Detection technology is a new technology.The optical phase conductor connector box power frequency 1min dry withstand voltage test method that this time proposes is used for carrying out the power frequency 1min dry withstand voltage test of optical phase conductor connector box, investigate the withstand voltage properties of optical phase conductor connector box under the dry withstand voltage condition of correspondence of different nominal voltage grades, guarantee the safe and stable operation of Practical Project.
Summary of the invention
The objective of the invention is to use the problem that exists in order to solve the OPPC engineering, a kind of optical phase conductor connector box dry withstand voltage test unit and test method are provided, and this devices and methods therefor can be tested withstand voltage properties under the dry withstand voltage condition of optical phase conductor connector box in correspondence of different nominal voltage grades in the OPPC working line in laboratory simulation.
The objective of the invention is to adopt following technical proposals to realize:
A kind of optical phase conductor connector box dry withstand voltage test unit, its improvements are, described test unit comprise connector box 1., the auxiliary extended fiber composite aerial phase line OPPC optical cable of test 4., test auxiliary prolong all dielectric self-supporting ADSS optical cable 5., voltage source and optical fiber attenuation monitor 7.;
The high pressure positive electrode of described voltage source 3. by the making alive circuit 2. with connector box 1. upper cartridge body be connected; The high pressure negative electrode ground connection of described voltage source; The auxiliary extended fiber composite aerial phase line OPPC optical cable of described test 4. an end and connector box 1. upper cartridge body be connected, 7. the other end is connected with the optical fiber attenuation monitor by tail optical fiber; Described test is auxiliary prolong all dielectric self-supporting ADSS optical cable 5. an end and connector box 1. lower box body be connected, 7. 6. the other end be connected with the optical fiber attenuation monitor by tail optical fiber.
Wherein, described voltage source comprise the high voltage positive electrode 3. with the high voltage negative electrode.
Wherein, 1. lower box body ground connection of described connector box.
Wherein, the auxiliary extended fiber composite aerial phase line OPPC optical cable of described test 4. with connector box 1. upper cartridge body be connected; Described test is auxiliary prolong all dielectric self-supporting ADSS optical cable 5. with connector box 1. lower box body be connected, the pre-buried tail optical fiber of phase welding is that optical phase conductor OPPC connector box inside has pre-buried tail optical fiber in optical fiber wherein and the box body.
Wherein, 4. the auxiliary extended fiber composite aerial phase line OPPC optical cable of described test comprises the light unit; Described smooth unit comprises optical fiber; 5. the auxiliary all dielectric self-supporting ADSS optical cable that prolongs of described test comprises the light unit; Described smooth unit comprises optical fiber.
The present invention is based on a kind of optical phase conductor connector box dry withstand voltage test method that another purpose provides, its improvements are, described test method at the trial, connector box bears the corresponding power frequency 1min dry withstand voltage test of operating voltage grade, in process of the test, 1. connector box without puncturing and flashover, comprises the steps:
(1) described connector box 1. box body internal optical fiber connecting disk put;
(2) 4. the auxiliary extended fiber composite aerial phase line OPPC optical cable of described test continues;
(3) 5. the auxiliary all dielectric self-supporting ADSS optical cable that prolongs of described test continues;
(4) 1. box body sealing of described connector box;
(5) the described optical fiber attenuation monitor of configuration 7.;
(6) 1. described connector box is carried out the test of power frequency 1min dry withstand voltage.
Wherein, in the described step (1), 1. described optical phase conductor OPPC connector box has pre-buried tail optical fiber in inside, and the multi-core fiber with pre-buried tail optical fiber before the test is connected in series with the auxiliary optical fiber cables unit internal optical fiber that prolongs of test, makes the optical fiber total length of serial connection greater than 500 meters.
Wherein, described connector box 1. the pre-buried tail optical fiber in the upper cartridge body and the auxiliary extended fiber composite aerial phase line OPPC optical cable of test 4. light unit internal optical fiber be connected in series; The described connector box 1. pre-buried tail optical fiber in the lower box body is connected in series with the auxiliary all dielectric self-supporting ADSS optical fiber cables unit internal optical fiber that prolongs of test.
Wherein, described optical fiber total length be connector box 1. the pre-buried tail optical fiber in the upper cartridge body and the auxiliary extended fiber composite aerial phase line OPPC optical cable of test 4. the fiber lengths that be connected in series of light unit internal optical fiber add the 1. pre-buried tail optical fiber in the lower box body and the test fiber lengths of assisting prolongation all dielectric self-supporting ADSS optical fiber cables unit internal optical fiber to be connected in series of connector box.
Wherein, be positioned over 1. box body inside of connector box through pre-buried optical fiber and the fibre-optical splice that continues; fibre-optical splice (joint refers to the optical fiber and the fused fiber splice fusion point together in the pre-buried tail optical fiber in the optical cable) through heat-shrink tube protection during with welding is fixed, and the radius-of-curvature that remaining fiber reel is put is not less than 30mm.
Wherein, in the described step (2), with described connector box 1. the pre-buried tail optical fiber in the upper cartridge body and the auxiliary extended fiber composite aerial phase line OPPC optical cable of test 4. light unit internal optical fiber be connected in series.
Wherein, in the described step (3), with described connector box 1. the pre-buried tail optical fiber in the lower box body be connected in series with the auxiliary all dielectric self-supporting ADSS optical fiber cables unit internal optical fiber that prolongs of test.
Wherein, in the described step (4), connector box 1. box body sealing adopts O-ring seal to realize in conjunction with hot melt adhesive; Namely with hot melt adhesive with the realization that is sticked together of O-ring seal and box body.
Wherein, in the described step (5), adopt the optical fiber attenuation monitor 7. optical fiber attenuation in the power frequency 1min dry withstand voltage process of the test to be carried out follow-on test when testing, and logging test results; The undulating quantity of optical fiber attenuation is no more than ± 0.03dB.
Wherein in, in the described step (6), during test, add first 75% the dried resistance test voltage of power frequency 1min, then the speed with per second 2% trial voltage rises to dried resistance test voltage, keep 1min, in process of the test, connector box is 1. without puncturing and flashover, simultaneously, utilize the attenuation change situation of optical fiber in the optical fiber attenuation monitor monitoring test process, the undulating quantity of optical fiber attenuation is no more than ± 0.03dB.
Wherein, described connector box operating voltage grade 1. comprises 10kV, 35kV, 110kV, 220kV and 500kV; Described optical phase conductor connector box power frequency 1min dry withstand voltage trial voltage grade comprises 42kV, 100kV, 265kV, 495kV and 850kV;
Wherein connector box operating voltage grade 1. is corresponding one by one with optical phase conductor connector box power frequency 1min dry withstand voltage trial voltage grade, i.e. the corresponding 42kV of 10kV; The corresponding 100kV of 35kV; The corresponding 265kV of 110kV; The corresponding 495kV of 220kV; The corresponding 850kV of 500kV.
Compared with the prior art, the beneficial effect that reaches of the present invention is:
1, optical phase conductor connector box dry withstand voltage test unit provided by the invention and test method, it is scheme the simplest and the most direct under laboratory condition, equipment is simple, time, voltage is easy to control, be convenient to the transport property of pre-buried tail optical fiber in the accurate test splice box by testing the auxiliary OPPC of prolongation and ADSS optical cable, and the withstand voltage test by different power frequency 1min dry withstand voltages, determine the nominal voltage grade of connector box, and can in time find the performance issue of connector box, thereby be conducive to improve production quality, guarantee the safe reliability of engineering.
2, optical phase conductor connector box dry withstand voltage test unit provided by the invention and test method, adopt laboratory environment for the OPPC connector box provides the actual track connector box to be used the simulated environment of carrying out emulation, so that voltage and the time of the test of power frequency 1min dry withstand voltage are controlled flexibly, environment more gears to actual circumstances.
3, connector box box body fibre junction and dish are put all and are carried out according to the specific requirement of Practical Project line conditions, and fused fiber splice point protection and bending radius all can reflect the situation of actual track connector box box body inside, ensure the applicability of test findings.
4, the auxiliary OPPC of prolongation of test and all dielectric self-supporting ADSS cable connection are monitored the fiber channel that sufficient length is provided by the optical fiber serial connection for optical fiber attenuation, and realistic engineering continuation method, are a kind of ways of novelty.
5, in the test by applying trial voltage corresponding to different electric pressures, can investigate the withstand voltage properties under dry withstand voltage corresponding to the connector box of different nominal voltage grades, also can determine the nominal voltage grade of connector box simultaneously.
6, the optical fiber attenuation monitor carries out continuous monitoring to the optical fiber attenuation in the whole power frequency 1min dry withstand voltage process of the test, and record data, make test figure have more horizontal comparability, reflect very intuitively the integral body fluctuation situation of optical fiber attenuation in the process of the test.
Description of drawings
Fig. 1 is optical phase conductor connector box dry withstand voltage test unit schematic diagram provided by the invention;
Fig. 2 is optical phase conductor connector box dry withstand voltage test method process flow diagram provided by the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
The objective of the invention is in order to solve optical phase conductor (Optical Fiber Composite Phase Conductor, OPPC) engineering is used the problem that exists, a kind of optical phase conductor connector box dry withstand voltage test unit and test method are provided, and the method can be tested withstand voltage properties under the dry withstand voltage condition of optical phase conductor connector box in correspondence of different nominal voltage grades in the OPPC working line in laboratory simulation.
Optical phase conductor connector box power frequency 1min dry withstand voltage test unit comprise connector box 1. itself, the auxiliary OPPC of prolongation of test optical cable 4. with test auxiliary prolong all dielectric self-supporting ADSS optical cable 5., voltage source, optical fiber attenuation monitor 7., carry out the simulation drawing of OPPC connector box power frequency 1min dry withstand voltage test as shown in Figure 1.
The high pressure positive electrode of described voltage source 3. by the making alive circuit 2. with connector box 1. upper cartridge body be connected; The high pressure negative electrode ground connection of described voltage source; The auxiliary extended fiber composite aerial phase line OPPC optical cable of described test 4. an end and connector box 1. upper cartridge body be connected, 7. 6. the other end be connected with the optical fiber attenuation monitor by tail optical fiber; Described test is auxiliary prolong all dielectric self-supporting ADSS optical cable 5. an end and connector box 1. lower box body be connected, 7. the other end is connected with the optical fiber attenuation monitor by tail optical fiber.
Optical phase conductor connector box dry withstand voltage test method process flow diagram provided by the invention as shown in Figure 2, comprise connector box 1. box body internal optical fiber connecting disk put, test the auxiliary OPPC of prolongation optical cable and 4. continue, test the preparation process such as auxiliaryly prolong that 5. all dielectric self-supporting ADSS optical cable continues, 7. the sealing of connector box box body, optical fiber attenuation monitor configure.During test, add first 75% regulation trial voltage, then rise to the withstand voltage of regulation with the speed of per second 2% trial voltage, keep 1min, in process of the test, connector box should be without puncturing and flashover, simultaneously, utilize the attenuation change situation of optical fiber in the optical fiber attenuation monitor monitoring test process, the undulating quantity of optical fiber attenuation should not surpass ± 0.03dB.
The dry withstand voltage grade that the connector box of different nominal voltage grades is corresponding is as shown in table 1.
Electric pressure corresponding to table 1 OPPC connector box power frequency 1min dry withstand voltage test
| Connector box operating voltage grade | Power frequency 1min dry withstand voltage trial voltage grade |
| 10kV | 42kV |
| 35kV | 100kV |
| 110kV | 265kV |
| 220kV | 495kV |
| 500kV | 850kV |
Concrete steps are as follows:
Connector box 1. box body internal optical fiber connecting disk is put: there is pre-buried tail optical fiber OPPC connector box inside, need before the test the auxiliary optical fiber cables unit internal optical fiber that prolongs of the inner multi-core fiber of pre-buried tail optical fiber and test is connected in series, ensure that concatenated fiber total length (fiber lengths that is connected in series with ADSS in the lower box body adds the summation of the fiber lengths that is connected in series with OPPC in the connector box upper cartridge body) is greater than 500 meters.Should be positioned over regular, in order connector box box body inside through pre-buried optical fiber and the fibre-optical splice that continues, joint be fixed, and guaranteed that fiber bending radius is enough large.Connector box box body fibre junction and dish are put all and are carried out according to the specific requirement of Practical Project line conditions, and fused fiber splice point protection and bending radius all can reflect the situation of actual track connector box box body inside, ensure the applicability of test findings.
4. the auxiliary OPPC optical cable that prolongs of test continues: in the test, for guaranteeing the accuracy of optical fiber attenuation monitoring, the fine total length of institute's photometry should be greater than 500 meters.Generally, the auxiliary OPPC optical fibre in optical cable that prolongs of the inner pre-buried tail optical fiber of connector box upper cartridge body and outside test is connected in series, so that the concatenated fiber total length satisfies testing requirements.
5. the auxiliary all dielectric self-supporting ADSS optical cable that prolongs of test continues: in the test, for guaranteeing the accuracy of optical fiber attenuation monitoring, the fine total length of institute's photometry should be greater than 500 meters.Generally, the auxiliary all dielectric self-supporting ADSS optical fibre in optical cable that prolongs of the inner pre-buried tail optical fiber of connector box lower box body and outside test is connected in series, so that the concatenated fiber total length satisfies testing requirements.
1. box body sealing of connector box: the long-term work of actual track OPPC connector box seals very necessary in rugged surroundings to box body when test in the laboratory.The box body sealing adopts O-ring seal to realize in conjunction with hot melt adhesive.
Configuration optical fiber attenuation monitor is 7.: in the process of the test, adopt special optic fibre decay monitor power frequency 1min dry withstand voltage to be tested optical fiber attenuation carries out follow-on test in the whole process, and logging test results.The optical fiber attenuation monitor carries out continuous monitoring to the optical fiber attenuation in the whole power frequency 1min dry withstand voltage process of the test, and record data, makes test figure have more horizontal comparability, reflects very intuitively the integral body fluctuation situation of optical fiber attenuation in the process of the test.
During test, add first 75% regulation trial voltage, then rise to the withstand voltage of regulation with the speed of per second 2% trial voltage, keep 1min, in process of the test, connector box should be without puncturing and flashover, simultaneously, utilize the attenuation change situation of optical fiber in the optical fiber attenuation monitor monitoring test process, the undulating quantity of optical fiber attenuation should not surpass ± 0.03dB.
The principal feature of technical solution of the present invention is utilized laboratory environment exactly, by Practical Project requirement butt junction box upper cartridge body access OPPC optical cable, lower box body access ADSS optical cable, the continuation method of simulation OPPC circuit practical operation situation, apply again trial voltage corresponding to different electric pressures, thereby investigate the withstand voltage properties under dry withstand voltage corresponding to the connector box of different nominal voltage grades.Adopt laboratory environment for the OPPC connector box provides the actual track connector box to be used the simulated environment of carrying out emulation, so that voltage and the time of the test of power frequency 1min dry withstand voltage are controlled flexibly, environment more gears to actual circumstances.
Optical phase conductor connector box dry withstand voltage test unit provided by the invention and test method, equipment is simple, time, voltage is easy to control, be convenient to the transport property of pre-buried tail optical fiber in the accurate test splice box by testing the auxiliary OPPC of prolongation and ADSS optical cable, and the withstand voltage test by different power frequency 1min dry withstand voltages, determine the nominal voltage grade of connector box, and can in time find the performance issue of connector box, thereby be conducive to improve production quality, guarantee the safe reliability of engineering.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (16)
1. optical phase conductor connector box dry withstand voltage test unit, it is characterized in that, described test unit comprise connector box 1., the auxiliary extended fiber composite aerial phase line OPPC optical cable of test 4., test auxiliary prolong all dielectric self-supporting ADSS optical cable 5., voltage source and optical fiber attenuation monitor 7.;
The high pressure positive electrode of described voltage source 3. by the making alive circuit 2. with connector box 1. upper cartridge body be connected; The high pressure negative electrode ground connection of described voltage source; The auxiliary extended fiber composite aerial phase line OPPC optical cable of described test 4. an end and connector box 1. upper cartridge body be connected, 7. the other end is connected with the optical fiber attenuation monitor by tail optical fiber; Described test is auxiliary prolong all dielectric self-supporting ADSS optical cable 5. an end and connector box 1. lower box body be connected, 7. 6. the other end be connected with the optical fiber attenuation monitor by tail optical fiber.
2. optical phase conductor connector box dry withstand voltage test unit as claimed in claim 1 is characterized in that, described voltage source comprise the high voltage positive electrode 3. with the high voltage negative electrode.
3. optical phase conductor connector box dry withstand voltage test unit as claimed in claim 1 is characterized in that, described connector box is lower box body ground connection 1..
4. optical phase conductor connector box dry withstand voltage test unit as claimed in claim 1 is characterized in that, the auxiliary extended fiber composite aerial phase line OPPC optical cable of described test 4. with connector box 1. upper cartridge body be connected; Described test is auxiliary prolong all dielectric self-supporting ADSS optical cable 5. with connector box 1. lower box body be connected, the pre-buried tail optical fiber of phase welding is that optical phase conductor OPPC connector box inside has pre-buried tail optical fiber in optical fiber wherein and the box body.
5. optical phase conductor connector box dry withstand voltage test unit as claimed in claim 1 is characterized in that, 4. the auxiliary extended fiber composite aerial phase line OPPC optical cable of described test comprises the light unit; Described smooth unit comprises optical fiber; 5. the auxiliary all dielectric self-supporting ADSS optical cable that prolongs of described test comprises the light unit; Described smooth unit comprises optical fiber.
6. an optical phase conductor connector box dry withstand voltage test method is characterized in that, described test method at the trial, connector box bears the corresponding power frequency 1min dry withstand voltage test of operating voltage grade, in process of the test, 1. connector box without puncturing and flashover, comprises the steps:
(1) described connector box 1. box body internal optical fiber connecting disk put;
(2) 4. the auxiliary extended fiber composite aerial phase line OPPC optical cable of described test continues;
(3) 5. the auxiliary all dielectric self-supporting ADSS optical cable that prolongs of described test continues;
(4) 1. box body sealing of described connector box;
(5) the described optical fiber attenuation monitor of configuration 7.;
(6) 1. described connector box is carried out the test of power frequency 1min dry withstand voltage.
7. optical phase conductor connector box dry withstand voltage test method as claimed in claim 6, it is characterized in that, in the described step (1), 1. described optical phase conductor OPPC connector box has pre-buried tail optical fiber in inside, multi-core fiber with pre-buried tail optical fiber before the test is connected in series with the auxiliary optical fiber cables unit internal optical fiber that prolongs of test, makes the optical fiber total length of serial connection greater than 500 meters.
8. optical phase conductor connector box dry withstand voltage test method as claimed in claim 7, it is characterized in that, described connector box 1. the pre-buried tail optical fiber in the upper cartridge body and the auxiliary extended fiber composite aerial phase line OPPC optical cable of test 4. light unit internal optical fiber be connected in series; The described connector box 1. pre-buried tail optical fiber in the lower box body is connected in series with the auxiliary all dielectric self-supporting ADSS optical fiber cables unit internal optical fiber that prolongs of test.
9. optical phase conductor connector box dry withstand voltage test method as claimed in claim 7, it is characterized in that, described optical fiber total length be connector box 1. the pre-buried tail optical fiber in the upper cartridge body and the auxiliary extended fiber composite aerial phase line OPPC optical cable of test 4. the fiber lengths that be connected in series of light unit internal optical fiber add the 1. pre-buried tail optical fiber in the lower box body and the test fiber lengths of assisting prolongation all dielectric self-supporting ADSS optical fiber cables unit internal optical fiber to be connected in series of connector box.
10. optical phase conductor connector box dry withstand voltage test method as claimed in claim 9; it is characterized in that; be positioned over 1. box body inside of connector box through pre-buried optical fiber and the fibre-optical splice that continues; fix through the fibre-optical splice of heat-shrink tube protection during with welding, and the radius-of-curvature that remaining fiber reel is put is not less than 30mm.
11. optical phase conductor connector box dry withstand voltage test method as claimed in claim 6, it is characterized in that, in the described step (2), with described connector box 1. the pre-buried tail optical fiber in the upper cartridge body and the auxiliary extended fiber composite aerial phase line OPPC optical cable of test 4. light unit internal optical fiber be connected in series.
12. optical phase conductor connector box dry withstand voltage test method as claimed in claim 6, it is characterized in that, in the described step (3), with described connector box 1. the pre-buried tail optical fiber in the lower box body be connected in series with the auxiliary all dielectric self-supporting ADSS optical fiber cables unit internal optical fiber that prolongs of test.
13. optical phase conductor connector box dry withstand voltage test method as claimed in claim 6 is characterized in that, in the described step (4), connector box 1. box body sealing adopts O-ring seal to realize in conjunction with hot melt adhesive; Namely with hot melt adhesive with the realization that is sticked together of O-ring seal and box body.
14. optical phase conductor connector box dry withstand voltage test method as claimed in claim 6, it is characterized in that, in the described step (5), adopt the optical fiber attenuation monitor 7. the total optical fiber attenuation after continuing in the power frequency 1min dry withstand voltage process of the test to be carried out follow-on test when testing, and logging test results; The undulating quantity of optical fiber attenuation is no more than ± 0.03dB.
15. optical phase conductor connector box dry withstand voltage test method as claimed in claim 6, it is characterized in that, in the described step (6), during test, add first 75% the dried resistance test voltage of power frequency 1min, then the speed with per second 2% trial voltage rises to dried resistance test voltage, keep 1min, in process of the test, connector box is 1. without puncturing and flashover, simultaneously, utilize the attenuation change situation of optical fiber in the optical fiber attenuation monitor monitoring test process, the undulating quantity of optical fiber attenuation is no more than ± 0.03dB.
16. optical phase conductor connector box dry withstand voltage test method as claimed in claim 15 is characterized in that described connector box operating voltage grade 1. comprises 10kV, 35kV, 110kV, 220kV and 500kV; Described optical phase conductor connector box power frequency 1min dry withstand voltage trial voltage grade comprises 42kV, 100kV, 265kV, 495kV and 850kV;
Wherein connector box operating voltage grade 1. is corresponding one by one with optical phase conductor connector box power frequency 1min dry withstand voltage trial voltage grade, i.e. the corresponding 42kV of 10kV; The corresponding 100kV of 35kV; The corresponding 265kV of 110kV; The corresponding 495kV of 220kV; The corresponding 850kV of 500kV.
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| CN116699346A (en) * | 2023-08-08 | 2023-09-05 | 西安高压电器研究院股份有限公司 | Power frequency withstand voltage test loop and power frequency withstand voltage test method |
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| 许高雄等: "光纤复合相线的电气性能研究与试验方法探讨", 《电力系统通信》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116699346A (en) * | 2023-08-08 | 2023-09-05 | 西安高压电器研究院股份有限公司 | Power frequency withstand voltage test loop and power frequency withstand voltage test method |
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| CN102914730B (en) | 2016-04-20 |
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