CN209979772U - Pre-discharge test device for floating hanging object of power transmission line - Google Patents
Pre-discharge test device for floating hanging object of power transmission line Download PDFInfo
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- CN209979772U CN209979772U CN201920293985.XU CN201920293985U CN209979772U CN 209979772 U CN209979772 U CN 209979772U CN 201920293985 U CN201920293985 U CN 201920293985U CN 209979772 U CN209979772 U CN 209979772U
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Abstract
The utility model discloses a transmission line floats and hangs thing test device that discharges in advance relates to a transmission line discharge device in advance, through simulation transmission line device simulation transmission line, will float and hang the thing setting on simulation transmission line device, the below of hanging the thing that floats is provided with discharge voltage detection device in advance, transmission line floats and hangs thing discharge voltage detection device in advance and can detect through discharge voltage detection device in advance after the thing test device that discharges inserts the power and hang the thing in advance and discharge data, float for transmission line and hang the thing in advance and discharge the research and provide the data support to establish the fact basis for the analysis of hanging thing trouble rule that floats.
Description
Technical Field
The utility model relates to a transmission line is discharge apparatus in advance, especially relates to a transmission line floats and hangs thing discharge test device in advance.
Background
Years of operation experience and statistical data of domestic and foreign power systems show that the safe operation of a power transmission line is seriously threatened by the drift and hanging fault, and the harmfulness is second to lightning stroke and external force damage. At present, floating hanging objects can only be found and confirmed through manual inspection or video monitoring, then corresponding tools are selected for clearing, however, the power transmission line is wide in erection region and complex in environment, when the floating hanging objects cannot be found and cleared in time, the phenomenon that the floating hanging objects contact the power transmission line for a long time to cause line tripping and even line damage is likely to occur, after a fault occurs, the position and the specific situation of the fault floating hanging objects can be determined only through a large amount of routing inspection and field checking, and the operation and maintenance efficiency is low.
After the floating object contacts the power transmission line, pre-discharge may be generated due to the change of the insulation condition, and the characteristics of the generated instantaneous voltage are different according to the difference of the line condition and the floating object condition and the difference of the pre-discharge intensity. When the discharge intensity is large enough, flashover is formed to cause line failure. If the floating hanging object is monitored and the characteristics of the instantaneous voltage of the floating hanging object are analyzed in the pre-discharge period, possible information of the floating hanging object and the abnormal state of the line are obtained, and a corresponding rule is summarized, so that the operator can be reminded at the first time, the inspection work of the line is guided to be carried out in advance, and the line fault is avoided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a transmission line floats and hangs thing test device that discharges in advance to overcome and to float on the current transmission line and hang thing in advance discharge and do not have the shortcoming of research data.
In order to achieve the above object, the utility model provides a transmission line floats and hangs thing pre-discharge test device, include: the simulation transmission line device is used for simulating the transmission line, and comprises:
a wire suspended in the air, an
A power supply connected to the wire;
the floating hanging object is arranged on the simulation power transmission line device;
the pre-discharge voltage detection device is arranged below the floating hanging object and used for detecting the pre-discharge voltage of the floating hanging object, and the pre-discharge voltage detection device comprises:
the metal induction plate is connected with the ground and arranged below the floating object;
the capacitor is arranged between the metal induction plate and the ground connection; and
and the voltage measuring device is connected in parallel to two ends of the capacitor.
Further, the floating hanging object is detachably arranged on the guide wire.
Furthermore, the device for simulating the power transmission line further comprises a current monitoring device which is arranged on the lead.
Further, the power supply is a power supply capable of adjusting voltage.
Furthermore, the number of the hanging objects is 1 or more.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model provides a transmission line floats and hangs thing test device that discharges in advance, through simulation transmission line device simulation transmission line, will float and hang the thing setting on simulation transmission line device, the below of hanging the thing that floats is provided with the voltage detection device that discharges in advance, the transmission line floats and hangs thing in advance discharge test device and inserts the power after can detect hanging thing in advance discharge data through the voltage detection device that discharges in advance, provide data support for transmission line floats and hangs thing in advance discharge research, thus establish the fact basis for the analysis of hanging thing trouble rule that floats; and later-stage operation and maintenance personnel can obtain the information of the suspended objects and the abnormal state of the line according to the pre-discharge data analysis of the suspended objects, summarize corresponding rules, and can remind operators at the first time to guide the line patrol and repair work to be carried out in advance, thereby avoiding line faults.
2. The utility model discloses still install current monitoring devices on the wire, when measuring discharge voltage in advance, measure the wire electric current, the change law of wire electric current wave form when can obtaining different discharge voltage in advance.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pre-discharge test device for hanging objects on a power transmission line of the present invention;
wherein: the device comprises a 1-lead, a 2-alternating current power supply, a 3-floating object, a 4-metal clamp, a 5-metal induction plate, a 6-capacitor, a 7-voltage measuring device and a 8-current monitoring device.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in figure 1, the utility model provides a transmission line floats and hangs thing preliminary discharge test device includes simulation transmission line device, floats and hangs thing 3 and preliminary discharge voltage detection device. The device for simulating the power transmission line comprises: wire 1, alternating current power supply 2, metal anchor clamps 4 and current monitoring device 8, wire 1 hangs in the air, and the one end and the alternating current power supply 2 of wire 1 are connected, can change the voltage of wire 1 through adjusting alternating current power supply 2, and current monitoring device 8 concatenates between wire 1 and alternating current power supply 2, and the thing 3 of hanging that wafts can the snap-on wire 1 or detachably fixes on wire 1, and detachably fixes including: fix, fix etc. through metal clip through insulating bandage or rope etc. and can be according to the experiment demand, confirm that the quantity of hanging thing 3 that wafts is 1 or a plurality of, and the hanging thing 3 that wafts of this embodiment passes through metal clip 4 and sets up on wire 1. The pre-discharge voltage detection device includes: the device comprises a metal induction plate 5, a capacitor 6 and a voltage measuring device 7, wherein the metal induction plate 5 is connected with the ground and arranged below the floating hanging object 3; the capacitor 6 is arranged between the metal induction plate 5 and the ground connection and is used for forming capacitor 6 voltage division on the lead 1 with the floating object 3; the voltage measuring device 7 is connected in parallel to two ends of the capacitor 6, and is used for reading the voltage at two ends of the capacitor 6 when the floating hanging object 3 is pre-discharged, and then the pre-discharge voltage of the floating hanging object 3 can be calculated by combining the voltage of the lead 1 (namely the voltage output by the alternating current power supply 2).
Right the utility model discloses the operation method of transmission line hanging thing preliminary discharge test device that wafts explains in detail to make technical personnel in the field more understand the utility model discloses:
as shown in fig. 1, firstly, a device for simulating a power transmission line is installed, one end of a wire 1 is connected with an alternating current power supply 2, a current monitoring device 8 is connected in series on the wire 1, one ends of two insulating ropes are respectively connected with two ends of the wire 1, and the other ends of the two insulating ropes are respectively fixed on an insulating object or an insulating bracket at a certain height, so that the wire 1 is suspended above; or one end of the insulator is connected with the middle of the lead 1, the other end of the insulator is connected with one end of two insulating ropes, and the other ends of the two insulating ropes are respectively connected with the two ends of the lead 1; through two insulating ropes, make wire 1 and two insulating ropes form a triangle-shaped, again through the intermediate junction with the both ends of insulator and two insulating rope junctions and wire 1, make simulation wire 1 fixed through two insulating ropes, the insulator, can the level be located aloft, because wire 1 simulation is the transmission line, and the wire that transmission line adopted is the stereoplasm wire, so form a triangle-shaped through simulation wire 1 and two insulating ropes 3, the reunion insulator, fixed simulation wire 1 that can be better, make simulation wire 1 level place aloft. Other connection relationships can also be adopted by suspending the conductor 1 horizontally in the air, and are not illustrated here. Next, 1 flag 3 is clipped on the lead 1 by a metal clip. Then, a pre-discharge voltage detection device is placed, a metal induction plate 5 is placed on the insulating support, the metal induction plate 5 is located under the floating hanging object 3 and is not in direct contact with the floating hanging object 3 (namely, a certain distance exists), then the metal induction plate 5 is grounded, the metal induction plate 5 is grounded after being connected with a capacitor 6 in series, and a voltage measurement device 7 is connected to two ends of the capacitor 6 in parallel. I.e. the connection is completed.
What this embodiment adopted, current monitoring device 8 is for taking wireless communication module, adopt the current detection sensor from integral rogowski coil current sensor, alternating current power supply 2 is for taking the transformer, and the rated output voltage of transformer is 500kV, rated current is 1A, rated capacity is 500 kVA's alternating current power supply, voltage measuring device 7 adopts the universal meter, hanging object 3 is branch etc. and metal induction plate 5 is the square metal sheet of 0.4m of length of side, the capacitance value of electric capacity 6 can be 3 ~ 10pF, metal anchor clamps 4 are the metal clip.
During the test, the alternating current power supply 2 is operated, and the operating switch of the voltage measuring device 7 is turned on, so that the whole device operates. Electrifying the lead 1 through the alternating current power supply 2, simulating the lead 1 of the power transmission line, and changing the voltage of the lead 1 through the alternating current power supply 2 so as to measure more data; after the power is on, the voltage generated by the metal induction plate 5 inducing the floating hanging object 3 is transmitted to the capacitor 6 and the voltage measuring device 7, the floating hanging object 3 and the capacitor 6 form the capacitor 6 voltage division for the wire 1, when the floating hanging object 3 generates pre-discharge, the voltage at the two ends of the capacitor 6 is read through the voltage measuring device 7, and then the pre-discharge voltage of the floating hanging object 3 can be calculated by combining the voltage of the wire 1 (the voltage generated by the alternating current power supply 2).
During the experiment, change wire 1 voltage through adjusting alternating current power supply 2, obtain the object of hanging 3 that wafts under the different condition through changing the material, the shape and hanging length of hanging 3 that wafts, can conclude the object of hanging 3 that wafts and discharge the law in advance. Through current monitoring device 8, when measuring the predischarge voltage, can measure the electric current of wire 1, the change law of the electric current waveform of wire 1 when obtaining different predischarge voltages. For example, the flying object 3 adopted in this embodiment is a branch, and the pre-discharge voltage of the flying object 3 under different conditions is obtained by changing the length and the dryness and wetness degree of the branch for adjustment.
To sum up, through the utility model relates to a transmission line floats and hangs thing test device that discharges in advance, float and hang the thing and discharge its voltage, electric current in advance and monitor, establish the factual basis for the analysis of hanging thing trouble law that wafts, the data that obtain through the analysis, can obtain the abnormal state of hanging thing information and circuit that wafts, summarize corresponding law, just can remind the operating personnel at the very first time, guide to patrol line maintenance work and develop in advance to avoid causing the circuit trouble, improve fortune dimension work efficiency.
The above disclosure is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or modifications within the technical scope of the present invention, and all should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a transmission line floats and hangs thing pre-discharge test device which characterized in that: the method comprises the following steps:
the simulation transmission line device is used for simulating the transmission line, and comprises:
a wire suspended in the air, an
A power supply connected to the wire;
the floating hanging object is arranged on the simulation power transmission line device;
the pre-discharge voltage detection device is arranged below the floating hanging object and used for detecting the pre-discharge voltage of the floating hanging object, and the pre-discharge voltage detection device comprises:
the metal induction plate is connected with the ground and arranged below the floating object;
the capacitor is arranged between the metal induction plate and the ground connection; and
and the voltage measuring device is connected in parallel to two ends of the capacitor.
2. The electric transmission line drift hanging object pre-discharge test device according to claim 1, characterized in that: the floating hanging object is detachably arranged on the guide wire.
3. The electric transmission line drift hanging object pre-discharge test device according to claim 1, characterized in that: the simulation transmission line device further comprises a current monitoring device which is arranged on the lead.
4. The electric transmission line drift hanging object pre-discharge test device according to claim 1, characterized in that: the power supply is a power supply capable of adjusting voltage.
5. The electric transmission line drift hanging object pre-discharge test device according to claim 1, characterized in that: the number of the hanging objects is 1 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920293985.XU CN209979772U (en) | 2019-03-08 | 2019-03-08 | Pre-discharge test device for floating hanging object of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920293985.XU CN209979772U (en) | 2019-03-08 | 2019-03-08 | Pre-discharge test device for floating hanging object of power transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209979772U true CN209979772U (en) | 2020-01-21 |
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ID=69254289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920293985.XU Active CN209979772U (en) | 2019-03-08 | 2019-03-08 | Pre-discharge test device for floating hanging object of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209979772U (en) |
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2019
- 2019-03-08 CN CN201920293985.XU patent/CN209979772U/en active Active
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