CN109387745A - A kind of power distribution network over-voltage sensing device - Google Patents
A kind of power distribution network over-voltage sensing device Download PDFInfo
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- CN109387745A CN109387745A CN201811572079.XA CN201811572079A CN109387745A CN 109387745 A CN109387745 A CN 109387745A CN 201811572079 A CN201811572079 A CN 201811572079A CN 109387745 A CN109387745 A CN 109387745A
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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
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
This application discloses a kind of power distribution network over-voltage sensing devices, galvanized steel support vertical is mounted on transmission tower cross-arm, zinc-plated steel bracket one end extends to outside transmission tower cross-arm, extend the part of transmission tower cross-arm for installing acquisition type insulator, energy type insulator installation site is taken to be located between two transmission tower cross-arms, zinc-plated steel bracket ties up fixation with stainless steel cable with cross arm of tower intersection, energy type insulator upper end is taken to be fixedly linked with bolt lead-out wire and distribution line with wire clamp, acquisition type insulator upper end is connected with energy type insulator upper end is taken with conducting wire；Over-voltage measurement device is fixed below transmission tower cross-arm with anchor ear, and over-voltage measurement device is connect with two insulator output ends with aviation plug.The technical solution of the application can take the mount scheme of energy type insulator, acquisition type insulator and over-voltage measurement device etc. by rationally designing, and realize the large-scale application of overvoltage sensing device, effectively incude the lightning overvoltage in power distribution network.
Description
Technical field
This application involves analysis and survey control technology field more particularly to a kind of power distribution network over-voltage sensing devices.
Background technique
Power distribution network, which refers to from power transmission network or regional power plant, receives electric energy, distribute or is pressed on the spot by distribution facility voltage by
Grade distributes to the power network of all types of user.It is by overhead transmission line, cable, shaft tower, distribution transformer, disconnecting switch, reactive compensation
The compositions such as device and some affiliated facilities, the network of important distribution electric energy effect is played in power network.
Since power distribution network itself dielectric level is lower, lightning stroke is an important factor for causing electric distribution network overhead wire to trip, and
Thunder and lightning is mainly derived from the induced overvoltage that route generates under thunder and lightning high-frequency electromagnetic pulse to the destruction of route.It unites according to data
It counts, failure caused by lightning induced voltage reaches 90% or more in distribution network failure ratio, they are to maintenance and operation cost
Influence it is very big, and significantly affect power quality index.Therefore, if practical survey can be carried out to power distribution network lightning induced voltage
Amount, can more clearly understand the characteristic of lightning induced voltage, but existing lightning induced voltage monitoring device is all in test
In the stage, because of the problems such as device takes electricity, signal to transmit, divider operation and maintenance, do not applied on a large scale.
Therefore, how effectively to incude lightning overvoltage in power distribution network becomes that those skilled in the art are urgently to be resolved to be asked
Topic.
Summary of the invention
This application provides a kind of power distribution network over-voltage sensing devices, can effectively incude the Lei Guo electricity in power distribution network
Pressure.
This application provides a kind of power distribution network over-voltage sensing devices, comprising:
Zinc-plated steel bracket, stainless steel cable take energy type insulator, acquisition type insulator, wire clamp and over-voltage measurement device；
Wherein, the galvanized steel support vertical is mounted on transmission tower cross-arm, and Zhi Suoshu support is installed on the zinc-plated steel bracket and is taken
Energy type insulator and the acquisition type insulator, the zinc-plated steel bracket and associated conductors laterally have distance, the galvanized steel
Bracket one end extends to outside transmission tower cross-arm, and the part for extending the transmission tower cross-arm is exhausted for installing the acquisition type
Edge, described that energy type insulator installation site is taken to be located between two transmission tower cross-arms, the zinc-plated steel bracket and shaft tower are horizontal
Fixation is tied up with the stainless steel cable in load intersection, and described take can type insulator upper end bolt lead-out wire and distribution line institute
It states wire clamp to be fixedly linked, the acquisition type insulator upper end takes energy type insulator upper end to be connected with conducting wire with described；It is described excessively electric
Pressure measuring device is fixed below transmission tower cross-arm with anchor ear, and the over-voltage measurement device and two insulator output ends are used
Aviation plug connection.
Optionally, it is described take can type insulator set there are two concatenated ceramic condenser C1And C2, wherein C1And C2Draw junction
Energy output end, C are taken out2The other end draw ground terminal.
Optionally, the acquisition type insulator is set there are two concatenated ceramic condenser C3And C4, wherein C3And C4Draw junction
Overvoltage signal output end out, C4The other end draw ground terminal.
Optionally, the capacity of the ceramic condenser is respectively C1=2.55nF, C2=61nF.
Optionally, the capacity of the ceramic condenser is respectively C3=420pF, C4=240nF.
Optionally, set on the zinc-plated steel bracket there are two fixation hole, fix respectively described in take can type insulator and described
Acquisition type insulator.
Optionally, the over-voltage measurement device includes Switching Power Supply, low power consumption data acquisition and analytical unit and wireless
Transmission module, wherein the Switching Power Supply takes energy type insulator to be connected with described, converts direct current for the alternating voltage in route
Voltage is powered to the over-voltage measurement device；The low power consumption data acquisition and analytical unit and the acquisition type insulator phase
Even, the overvoltage signal in route is acquired and analysis is handled；The wireless transport module is by treated overvoltage
Signal emits to monitoring background system, and route operation conditions is monitored and is judged.
From the above technical scheme, the embodiment of the present application provides a kind of power distribution network over-voltage sensing device, comprising: plating
Zinc steel bracket, stainless steel cable take energy type insulator, acquisition type insulator, wire clamp and over-voltage measurement device；Wherein, zinc-plated
Steel bracket is vertically mounted on transmission tower cross-arm, and installation support takes energy type insulator and the insulation of acquisition type on zinc-plated steel bracket
Son, zinc-plated steel bracket and associated conductors laterally have distance, and zinc-plated steel bracket one end extends to outside transmission tower cross-arm, extends
The part of transmission tower cross-arm takes energy type insulator installation site to be located at two transmission tower cross for installing acquisition type insulator
Between load, zinc-plated steel bracket ties up fixation with stainless steel cable with cross arm of tower intersection, and energy type insulator upper end is taken to be drawn with bolt
Outlet and distribution line are fixedly linked with wire clamp, and acquisition type insulator upper end is connected with energy type insulator upper end is taken with conducting wire；It crosses
Voltage measuring apparatus is fixed below transmission tower cross-arm with anchor ear, and over-voltage measurement device and two insulator output ends navigate
Blind plug connection.The technical solution of the application can take energy type insulator, acquisition type insulator and overvoltage by rationally designing
The mount scheme of measuring device etc. realizes the large-scale application of overvoltage sensing device, effectively incudes the thunder mistake in power distribution network
Voltage.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, attached drawing needed in case study on implementation will be made below
Simply introduce, it should be apparent that, for those of ordinary skills, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of power distribution network over-voltage sensing device provided by the embodiments of the present application；
Fig. 2 is the structure chart provided by the embodiments of the present application for taking energy type insulator and acquisition type insulator；
Fig. 3 is the top view of zinc-plated steel bracket provided by the embodiments of the present application；
Fig. 4 is the structural block diagram of over-voltage measurement device provided by the embodiments of the present application.
It illustrates:
Wherein, the zinc-plated steel bracket of 1-；2- stainless steel cable；3- takes can type insulator；4- acquisition type insulator；5- wire clamp；6-
Over-voltage measurement device；The first fixation hole of 11-；The second fixation hole of 12-；13- cross-arm；14- conducting wire；31- takes can output end；32-
Ground terminal；41- overvoltage signal output end；61- Switching Power Supply；The acquisition of 62- low power consumption data and analytical unit；63- is wirelessly passed
Defeated module；64- monitors background system.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with attached drawing, it is right
Technical solution in the embodiment of the present application is clearly and completely described.
Referring to Fig. 1, the embodiment of the present application provides a kind of power distribution network over-voltage sensing device, comprising: zinc-plated steel bracket 1,
Stainless steel cable 2 takes energy type insulator 3, acquisition type insulator 4, wire clamp 5 and over-voltage measurement device 6；Wherein, described zinc-plated
Steel bracket 1 is vertically mounted on transmission tower cross-arm, and Zhi Suoshu support is installed on the zinc-plated steel bracket 1 and takes energy type insulator 3
With the acquisition type insulator 4, the zinc-plated steel bracket 1 and associated conductors laterally have a distance, and when installation considers two insulators
Weight and size, described zinc-plated 1 one end of steel bracket extends to outside transmission tower cross-arm 13, extends the transmission tower cross-arm
13 part is described that 3 installation site of energy type insulator is taken to be located at two transmission tower cross for installing the acquisition type insulator 4
Between load 13, the zinc-plated steel bracket 1 ties up fixation with the stainless steel cable 2 with 13 intersection of cross arm of tower, specifically can be used
Cross winding etc. can consolidate fixation, and the both ends of stainless steel cable 2 can be fixed with strainer；Described take can 3 upper end use of type insulator
Bolt lead-out wire and distribution line are fixedly linked with the wire clamp 5, and 4 upper end of acquisition type insulator and described take can type insulation
Sub 3 upper ends are connected with conducting wire 14；The over-voltage measurement device 6 is fixed below transmission tower cross-arm with anchor ear, described excessively electric
Pressure measuring device 6 is connect with two insulator output ends with aviation plug.Wherein, the transverse direction of zinc-plated steel bracket 1 and associated conductors
Distance about 30cm, over-voltage measurement device 6 are fixed below cross arm of tower at about 1 meter with anchor ear.
Further, as shown in Fig. 2, it is described take can type insulator 3 set that there are two concatenated ceramic condenser C1And C2, wherein
C1And C2Junction, which is drawn, takes energy output end 31, C2The other end draw ground terminal 32.The capacity of the ceramic condenser is respectively C1
=2.55nF, C2=61nF, using this intrinsic standoff ratio, taking can the exportable about 230V power-frequency voltage of output end 31.The acquisition type is exhausted
Edge 4 is set there are two concatenated ceramic condenser C3And C4, wherein C3And C4Draw overvoltage signal output end 41, C in junction4It is another
Draw ground terminal 32 in one end.The capacity of the ceramic condenser is respectively C3=420pF, C4=240nF, using this intrinsic standoff ratio, entirely
Route exportable about 10V voltage signal when operating normally.
It is worth noting that the ceramic condenser capacity in the embodiment of the present application is not restricted to number disclosed in the present application
Value, other suitable capacitances are also that can be used, and suitable capacitance needs to guarantee to take in energy type insulator 3 and adopt
Two ceramic condensers are respectively high and low pressure capacitor in collection type insulator 4.
Further, as shown in figure 3, being set on the zinc-plated steel bracket 1 there are two fixation hole is respectively that circle first is fixed
Hole 11 and round second fixation hole 12, size is consistent with the bolt of insulator upper and lower side, fix respectively described in take energy type insulator 3
With the acquisition type insulator 4.
Further, as shown in figure 4, the over-voltage measurement device 6 include Switching Power Supply 61, low power consumption data acquisition and
Analytical unit 62 and wireless transport module 63, wherein the Switching Power Supply 61 takes energy type insulator 3 to be connected with described, by route
In alternating voltage be converted into DC voltage give the over-voltage measurement device 6 power supply；The low power consumption data acquisition and analysis
Unit 62 is connected with the acquisition type insulator 4, is acquired to the overvoltage signal in route and analysis is handled；It is described wireless
Transmission module 63 is to emit treated overvoltage signal to monitoring background system 64 by wireless signal, runs shape to route
Condition is monitored and judges.
From the above technical scheme, the embodiment of the present application provides a kind of power distribution network over-voltage sensing device, comprising: plating
Zinc steel bracket 1, stainless steel cable 2 take energy type insulator 3, acquisition type insulator 4, wire clamp 5 and over-voltage measurement device 6；Its
In, zinc-plated steel bracket 1 is vertically mounted on transmission tower cross-arm, and installation support takes 3 He of energy type insulator on zinc-plated steel bracket 1
Acquisition type insulator 4, zinc-plated steel bracket 1 laterally have distance with associated conductors, and zinc-plated 1 one end of steel bracket extends to transmission tower
Outside cross-arm, extend the part of transmission tower cross-arm for installing acquisition type insulator 4, taking can the 3 installation position set of type insulator
Between two transmission tower cross-arms, zinc-plated steel bracket 1 ties up fixation with cross arm of tower intersection stainless steel cable 2, and taking can type
3 upper end bolt lead-out wire of insulator and distribution line wire clamp 5 are fixedly linked, 4 upper end of acquisition type insulator with take can type it is exhausted
3 upper end of edge is connected with conducting wire；Over-voltage measurement device 6 is fixed below transmission tower cross-arm with anchor ear, over-voltage measurement dress
6 are set to connect with two insulator output ends with aviation plug.The technical solution of the application can take energy type exhausted by rationally designing
The mount scheme of edge, acquisition type insulator and over-voltage measurement device etc. realizes the large-scale application of overvoltage sensing device,
Effectively incude the lightning overvoltage in power distribution network.
The application can be used in numerous general or special purpose computing system environments or configuration.Such as: personal computer, service
Device computer, handheld device or portable device, laptop device, multicomputer system, microprocessor-based system, top set
Box, programmable consumer-elcetronics devices, network PC, minicomputer, mainframe computer, including any of the above system or equipment
Distributed computing environment etc..
The application can describe in the general context of computer-executable instructions executed by a computer, such as program
Module.Generally, program module includes routines performing specific tasks or implementing specific abstract data types, programs, objects, group
Part, data structure etc..The application can also be practiced in a distributed computing environment, in these distributed computing environments, by
Task is executed by the connected remote processing devices of communication network.In a distributed computing environment, program module can be with
In the local and remote computer storage media including storage equipment.
Those skilled in the art will readily occur to its of the application after considering specification and practicing application disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by following
Claim is pointed out.
It should be understood that the application is not limited to the precise structure that has been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by the accompanying claims.
Claims (7)
1. a kind of power distribution network over-voltage sensing device characterized by comprising zinc-plated steel bracket (1), takes energy at stainless steel cable (2)
Type insulator (3), acquisition type insulator (4), wire clamp (5) and over-voltage measurement device (6)；Wherein, the zinc-plated steel bracket
(1) it is vertically mounted on transmission tower cross-arm, Zhi Suoshu support is installed on the zinc-plated steel bracket (1) and takes energy type insulator (3)
With the acquisition type insulator (4), the zinc-plated steel bracket (1) and associated conductors laterally have distance, the zinc-plated steel bracket
(1) one end extends to outside transmission tower cross-arm, and the part for extending the transmission tower cross-arm is exhausted for installing the acquisition type
Edge (4), described that energy type insulator (3) installation site is taken to be located between two transmission tower cross-arms, the zinc-plated steel bracket (1)
Fixation is tied up with the stainless steel cable (2) with cross arm of tower intersection, described take can type insulator (3) upper end bolt lead-out wire
It is fixedly linked with distribution line with the wire clamp (5), the acquisition type insulator (4) upper end and described take can type insulators (3)
Upper end is connected with conducting wire；The over-voltage measurement device (6) is fixed below transmission tower cross-arm with anchor ear, and the overvoltage is surveyed
Amount device (6) is connect with two insulator output ends with aviation plug.
2. the apparatus according to claim 1, which is characterized in that it is described take can type insulator (3) set there are two concatenated pottery
Porcelain capacitor C1And C2, wherein C1And C2Junction, which is drawn, takes energy output end, C2The other end draw ground terminal.
3. the apparatus according to claim 1, which is characterized in that the acquisition type insulator (4) sets there are two concatenated pottery
Porcelain capacitor C3And C4, wherein C3And C4Draw overvoltage signal output end, C in junction4The other end draw ground terminal.
4. the apparatus of claim 2, which is characterized in that the capacity of the ceramic condenser is respectively C1=2.55nF, C2
=61nF.
5. device according to claim 3, which is characterized in that the capacity of the ceramic condenser is respectively C3=420pF, C4
=240nF.
6. the apparatus according to claim 1, which is characterized in that it is set on the zinc-plated steel bracket (1) there are two fixation hole, point
Not Gu Ding described in take can type insulator (3) and the acquisition type insulator (4).
7. the apparatus according to claim 1, which is characterized in that the over-voltage measurement device (6) includes Switching Power Supply
(61), low power consumption data acquisition and analytical unit (62) and wireless transport module (63), wherein the Switching Power Supply (61) and institute
It states and energy type insulator (3) is taken to be connected, convert DC voltage to the over-voltage measurement device (6) for the alternating voltage in route
Power supply；The low power consumption data acquisition and analytical unit (62) are connected with the acquisition type insulator (4), to excessively electric in route
Pressure signal is acquired and analysis processing；The wireless transport module (63) is that overvoltage signal emits to monitoring by treated
Background system is monitored and judges to route operation conditions.
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| CN201811572079.XA CN109387745B (en) | 2018-12-21 | 2018-12-21 | Overvoltage sensing device for power distribution network |
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| CN201811572079.XA CN109387745B (en) | 2018-12-21 | 2018-12-21 | Overvoltage sensing device for power distribution network |
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| CN109387745B CN109387745B (en) | 2020-06-05 |
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Cited By (2)
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| CN111089999A (en) * | 2020-02-10 | 2020-05-01 | 华北电力大学 | Parallel AC high-voltage line voltage measuring device and method |
| CN113252971A (en) * | 2021-05-12 | 2021-08-13 | 云南电网有限责任公司丽江供电局 | FDTD-based distribution line inductive lightning overvoltage calculation method |
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| CN111089999A (en) * | 2020-02-10 | 2020-05-01 | 华北电力大学 | Parallel AC high-voltage line voltage measuring device and method |
| CN113252971A (en) * | 2021-05-12 | 2021-08-13 | 云南电网有限责任公司丽江供电局 | FDTD-based distribution line inductive lightning overvoltage calculation method |
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| Publication number | Publication date |
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| CN109387745B (en) | 2020-06-05 |
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