CN207516494U - A kind of bus voltage measurement device based on GIS disc insulator distribution capacity - Google Patents
A kind of bus voltage measurement device based on GIS disc insulator distribution capacity Download PDFInfo
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- CN207516494U CN207516494U CN201721728402.9U CN201721728402U CN207516494U CN 207516494 U CN207516494 U CN 207516494U CN 201721728402 U CN201721728402 U CN 201721728402U CN 207516494 U CN207516494 U CN 207516494U
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Abstract
The utility model discloses a kind of bus voltage measurement devices based on GIS disc insulator distribution capacity, capacitance is scattered as high-voltage arm using GIS disc insulators, using with the divider that GIS disc insulators are connect as low-voltage arm, it is measured using voltage of the principle of capacitance partial pressure between GIS inner guides and GIS shells, can realize the real-time monitoring to GIS working voltages；In addition, divider shell and GIS shell equipotential links, can effectively shield the electric interfering field that other charging equipments of substation generate, ensure the accuracy measured.
Description
Technical field
The utility model belongs to technical field of power systems, and in particular to one kind is based on GIS disc insulator distribution capacity
Bus voltage measurement device.
Background technology
With epoch and economic rapid development, building GIS, (Gas Insulated Substation, gas-insulated become
Power station) substation become an engineering indispensable in China's development plan.It is different from previous open distribution system,
GIS substations are with reliability is high, operation is convenient, take up an area less, internal element interferes less, maintenance time is long, easy for installation, economical
The advantages that cost is small, not by electromagnetic effect, therefore, GIS 110kV and more than power grid in obtain extensive use.In view of GIS becomes
Importance of the power station in electric system monitors the state of power equipment, is also shown with ensuring that it safely and reliably runs in real time
Must be particularly important, the working voltage of wherein monitor GIS is the basis for ensuring its safe operation.
GIS voltage monitors are voltage transformer, including the conventional voltage using capacitance-voltage-distributing type and electromagnetic type as representative
Mutual inductor and using electronic mutual inductor and optical voltage transformer as the voltage transformer of new generation of representative, this two classes voltage
Mutual inductor there are easy permeability, involve great expense, install need to have a power failure with maintenance, it is bulky, measure that dumb, loss is big, absolutely
The defects of edge requirement is high.In addition, traditional capacitance-voltage-distributing type and electromagnetic potential transformer be easy to cause in GIS circuits it is ferromagnetic
Resonance, and ferro-resonance over-voltage may cause insulation breakdown to damage, and transient overvoltage may also cause core sataration, and then
Lead to problems such as measure the linearity it is low, static and dynamic true scope is small, transient error characteristic is undesirable or even can cause mutual inductance
Device heating burnout, the generation of these failures can cause unnecessary loss to electric system.The optical voltage transformer of a new generation
There is also transmission loss it is high, it is influenced by ambient temperature greatly with partial pressure ratio deviation the problems such as；Equally, electronic type voltage transformer exists
Resisting temperature and the problems such as electromagnetic interference capability is poor, measurement transient voltage error is high.
Various defects existing for above-mentioned GIS voltage check devices, it has also become the bottleneck in the development and application of GIS substations, assistant officer
The GIS voltage check devices of a kind of strong interference immunity yet-to-be developed, high certainty of measurement are realized and run shape to GIS ultra-high-tension power transmission lines
The real-time monitoring of state.
Utility model content
The purpose of this utility model be intended to for it is current have anti-interference existing for GIS voltage monitors it is poor, easily by
The technical problems such as ectocine, measurement error be big, provide a kind of bus voltage measurement based on GIS disc insulator distribution capacity
Device, the device can flexibly, conveniently, safely and accurately obtain voltage waveform during ultra-high-tension power transmission line operation, and then in real time
The operating status of ultra-high-tension power transmission line is monitored, existing voltage transformer can be overcome to involve great expense, installed and needed to have a power failure with maintenance, survey
Measure the defects of dumb, insulating requirements are high.
In order to achieve the above object, the technical scheme adopted by the utility model is that：One kind is distributed based on GIS disc insulators
The bus voltage measurement device of capacitance, using GIS disc insulators distribution capacity as high-voltage arm, to be connect with GIS disc insulators
Divider for low-voltage arm, measure the voltage between GIS inner guides and GIS shells, and display unit is transmitted to through coaxial cable.
GIS disc insulators distribution capacity refers to the capacitance by being generated between GIS high-field electrodes and sensing tablet in the utility model.
The above-mentioned bus voltage measurement device based on GIS disc insulator distribution capacity, the divider include divider
Shell, be installed on divider outer casing bottom, the BNC connector being connect with coaxial cable, the build-out resistor being connect with BNC connector with
Banana head connector with resistance connection, the head cover for being installed on divider cover top portion are bonded with GIS disc insulators outer surface
Disc insulator contact electrode and contact with disc insulator the T-shaped conduction compressing member that electrode connects across head cover；It is described
Divider outer casing bottom center is respectively designed with the first boss and second boss of cylinder-shaped inwardly or outwardly protrusion, described
First boss compresses the low-voltage arm Resistor-Capacitor Unit being set between the two with T-shaped conductive compressing member, and the BNC connector is fixed on
On second boss annular end face, the banana head connector is installed on first boss barrel type intracavitary and passes through low-voltage arm capacitance-resistance
Element is stretched into T-shaped conductive compressing member central cavity, and banana head connector is heaved in position and T-shaped conductive compressing member central cavity
Wall is bonded.
The above-mentioned bus voltage measurement device based on GIS disc insulator distribution capacity, in order to BNC connector and banana head
Connecting-piece structure matches, and the first boss forms hierarchic structure with second boss, and second boss internal diameter is more than first boss
Internal diameter, the outer diameter of second boss are more than the outer diameter of first boss.
The above-mentioned bus voltage measurement device based on GIS disc insulator distribution capacity is provided with two on the head cover
More than spring lever, each spring lever tip designs have the hook that the screw rod with GIS shells is connect, and are fixed divider by linking up with
In on GIS shells, while can realize divider shell and GIS shell equipotential links in this way, so as to shield GIS substations its
The electric interfering field that its charging equipment generates, it is ensured that the accuracy of measurement voltage signal.Spring lever can be retractable to appropriate length with
Divider is allow to meet different type GIS demands.
The above-mentioned bus voltage measurement device based on GIS disc insulator distribution capacity, for ease of assembly and disassembly, the compression
Part is to be threadedly coupled between contacting electrode with disc insulator.
The above-mentioned bus voltage measurement device based on GIS disc insulator distribution capacity, between the head cover and compressing member
Be provided with T-shaped divider insulator, T-shaped divider insulator end is pierced by from top cap central position, by divider compressing member with
Head cover separates, and plays the role of to the signal that divider measurement obtains and divider casing insulation.
The above-mentioned bus voltage measurement device based on GIS disc insulator distribution capacity, for ease of assembly and disassembly, and makes compression
Good contact between part and divider insulator, to be threadedly coupled between the divider insulator and compressing member.This practicality is new
Type is using insulating materials such as nylon, polytetrafluoroethylene (PTFE) as divider insulator.
The above-mentioned bus voltage measurement device based on GIS disc insulator distribution capacity, the low-voltage arm Resistor-Capacitor Unit are used
It is low in providing corresponding low-voltage arm resistance, capacitance, while the influence of stray inductance can be reduced as low-voltage arm for divider
Pressure arm Resistor-Capacitor Unit disc structure in a ring, for surface mount elements (such as the Chip-R of outsourcing, the patch electricity with capacitance-resistance performance
Hold element etc.) pcb board of composition or electrolytic thin-membrane (such as PET polyester films of outsourcing), it is not construed as limiting, provides herein
Resistance, capacitance can be designed according to GIS disc insulator distribution capacity.
The above-mentioned bus voltage measurement device based on GIS disc insulator distribution capacity is provided between the coaxial cable
Operational amplification circuit or microcontroller with filtering, enlarging function, divider passes through coaxial with operational amplification circuit or microcontroller
Cable connection；They are for being filtered the voltage signal that divider measurement obtains, voltage follow and amplification etc., to ensure electricity
Press the accuracy measured.
The above-mentioned bus voltage measurement device based on GIS disc insulator distribution capacity, the display that the utility model uses
Unit is oscillograph.
Bus voltage measurement device provided by the utility model based on GIS disc insulator distribution capacity has with following
Beneficial effect：
(1) device is using GIS disc insulators distribution capacity as high-voltage arm, with the partial pressure being connect with GIS disc insulators
Device is low-voltage arm, is measured, can realized using voltage of the principle of capacitance partial pressure between GIS inner guides and GIS shells
Real-time monitoring to GIS working voltages；
(2) the device divider shell and GIS shell equipotential links, can effectively shield other charging equipments of substation
The electric interfering field of generation ensures the accuracy measured；
(3) the device divider is connect with GIS disc insulators, is not in direct contact with GIS high-pressure sections, there is no insulation
Problem, security reliability is strong, therefore does not influence system safety operation in the installation, measurement, maintenance process of device；
(4) device is mounted at GIS disc insulators, and the voltage signal of measurement is filtered using operational amplification circuit
The signal processings such as wave, voltage follow, voltage amplification, further improve measurement accuracy and reliability；
(5) device only can realize reality to GIS working voltages by being mounted on the divider at GIS disc insulators
When monitor, not only have the characteristics that simple in structure, easy to operate, but also overall volume is small, at low cost, and voltage monitoring position can be with
Arbitrarily changed according to actual demand, strong applicability convenient, flexible using process, suitable for promoting the use of in the art.
Description of the drawings
Fig. 1 is that bus voltage measurement device overall structure of the utility model based on GIS disc insulator distribution capacity is shown
It is intended to；
Fig. 2 is the divider knot of bus voltage measurement device of the utility model based on GIS disc insulator distribution capacity
Structure schematic diagram.
Reference sign：1st, divider；2nd, divider shell；3rd, BNC connector；4th, build-out resistor；5th, banana head connects
Part；6th, divider insulator；7th, low-voltage arm Resistor-Capacitor Unit；8th, T-shaped conductive compressing member；9th, head cover；10th, spring lever；11st, it links up with；
12nd, disc insulator contact electrode；13rd, GIS disc insulators；14th, GIS inner guides；15th, GIS shells；16th, coaxial cable；
17th, operational amplification circuit.
Specific embodiment
Embodiment
The utility model is described further in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, the bus voltage measurement device provided in this embodiment based on GIS disc insulator distribution capacity,
Including divider 1, coaxial cable 16, operational amplification circuit 17.It is two sections that coaxial cable 16, which is divided to, and first segment is connected to divider 1
Between operational amplification circuit 17, second segment is connected to operational amplification circuit 17 and as between the oscillograph of display unit.
As shown in Fig. 2, divider 1 mainly by divider shell 2, BNC connector 3, build-out resistor 4, banana head connector 5,
Divider insulator 6, low-voltage arm Resistor-Capacitor Unit 7, conductive compressing member 8, head cover 9, disc insulator contact electrode 12 and hook groups
Part is formed.
As shown in Fig. 2, divider shell 2 is the rectangular box-shaped structure of upper opening, it is made of stainless steel.Outside divider
The bottom centre position of shell 2 is respectively designed with the first boss and second boss of cylinder-shaped inwardly or outwardly protrusion, first boss
It is integrally cylindrical with second boss.The axis of first boss and second boss overlaps, and the two forms hierarchic structure, second boss
Internal diameter and outer diameter are respectively greater than the internal diameter and outer diameter of first boss；The internal diameter of first boss and second boss can be according to selected
BNC connector 3 and 5 outer diameter of banana head connector be designed.First boss top is circular disk structure, for being pressed with conduction
The tight cooperation of part 8 crimping low-voltage arm Resistor-Capacitor Unit 7.There is circular hole at the center of head cover 9.Head cover 9 is consolidated with 2 upper surface of divider shell
Fixed connection.It should be noted that the shape of divider shell 2 does not have special limitation, or cylindric to wait this fields normal
Shape and structure.
As shown in Fig. 2, banana head connector 5 is standard connector part, material is generally brass or aluminium, and it has an elasticity
Position is heaved, it can be that the element contacted forms very big contact area that this, which heaves position,.
As shown in Fig. 2, the divider insulator 6 is T-shaped tube structure, its underpart is annular end face, and top is cylinder
External diameter matches, and upper cylinder cavity inner surface is designed with internal thread with 9 center mounting hole internal diameter of head cover.Partial pressure
Device insulator 6 is made using insulating materials such as nylon, polytetrafluoroethylene (PTFE).
As shown in Fig. 2, the disc structure in a ring of low-voltage arm Resistor-Capacitor Unit 7, capacitance-resistance pcb board or electricity for surface mount elements composition
Matter film is solved, the capacitance-resistance pcb board or electrolytic thin-membrane of outsourcing may be used.
As shown in Fig. 2, 8 T-shaped structure of conductive compressing member, its underpart is annular end face, and central upper portion position is blind hole type
Cavity, to be made of the first cylinder and the second cylinder of step, the first cylinder is designed with to be connect with disc insulator for outer surface
The 12 matched external screw thread of screw hole internal thread of touched electrode, the second cylinder are designed with and the matched outer spiral shell of 6 internal thread of divider insulator
Line.The present embodiment is using housing pin as conductive compressing member 8.
As shown in Fig. 2, hanging hook assembly is by two metal elastic spring bases 10 and is set to the metal hanger 11 on spring lever top
Composition.
As shown in Fig. 2, disc insulator contact electrode 12 is arc sheetmetal, crooked radian and GIS disc insulators
13 is identical, and width is slightly less than the width of GIS disc insulators 13, can fit closely in 13 outer surface of GIS disc insulators.
The assembling mode of each component of bus voltage measurement device and GIS based on GIS disc insulator distribution capacity is：It will
Low-voltage arm Resistor-Capacitor Unit 7, housing pin, divider insulator 6 and head cover 9 are sequentially placed into divider shell first boss end face
On, coordinated by 6 upper inside surface internal thread of divider insulator with the second cylinder of housing pin external screw thread and divider insulate
Sub-set is connected on housing pin, and 6 lower annular disk of divider insulator is crimped on housing pin lower annular disk and top
Between lid 9, head cover is fixed after being fitted closely with divider shell aperture end face through screw；The pressure being pierced by from top cap central mounting hole
Tight screw contacts the cooperation of 12 screw hole of electrode by housing pin and disc insulator by the second cylinder external screw thread with disc insulator
Electrode 12 is contacted to be connected；Two spring levers, 10 free end for being equipped with hook 11 is fixed on by prefabricated pipe on head cover 9；BNC connector 3
It for standard component, is screwed on second boss annular end face, BNC connector contact pin one end is connect with build-out resistor 4, matching
4 other end of resistance is connect with 5 lower face of banana head connector, and banana head connector 5 is through second boss cavity, first boss chamber
Body, low-voltage arm Resistor-Capacitor Unit 7 are penetrated in housing pin cavity, and banana head connector is made to be located at first boss cavity and housing screw
On the axis of central cavity, heave position and be bonded with housing pin central cavity inner wall, remaining position not with low-voltage arm capacitance-resistance
Element, the contact of first boss cavity inner wall；The BNC connector contact pin other end is connect with coaxial cable inner conductor, and BNC connector inserts shell
It is connect with coaxial outer conductor, 16 other end of coaxial cable accesses the input anode of operational amplification circuit, operation amplifier
Circuit output end accesses oscillograph through coaxial cable；Finally hook is fixed on the screw rod of GIS shells 15, and make disc insulator
Contact electrode 12 and GIS disc insulators outer surface fits closely, and just completes voltage measuring apparatus divider and the group of GIS
Dress.
Above-mentioned insulator 6 is played between housing pin and head cover 9 by the measuring signal and crust of the device of divider 1
The effect of insulation.
Above-mentioned build-out resistor 4 is 50 Ω build-out resistors, for ensureing the coax impedance being connect with BNC connector matching,
Voltage signal is eliminated to turn back the error penetrated and brought.
Above-mentioned divider 1 is fixed on by spring lever 10 and hook 11 on 15 screw rod of GIS shells, and spring lever 10 can stretch
To appropriate length, divider 1 is fixed on GIS shells 15, while realizes that divider shell 2 connects with 15 equipotential of GIS shells
It connects.Using the mode of spring lever 10 and hook 11, it can arbitrarily change voltage monitoring position according to actual demand, use process side
Just flexibly.
The normal operational amplifying circuit of this field, input anode and output terminal may be used in above-mentioned operational amplification circuit
It is connect with coaxial cable core, the external shielding layer connection of coaxial cable of the input cathode with connecting input anode.It in addition, should
Operational amplification circuit can be connected by microcontroller (such as MCS51), the coaxial cable and the signal of microcontroller being connect with divider
Input terminal connects, and the signal output end of microcontroller is connect through coaxial cable with oscilloscope signal input terminal.
(the present embodiment is exhausted as benzvalene form with sensing tablet using high-field electrode (being GIS inner guides 14 in the present embodiment) for the present apparatus
Edge contacts electrode 12) between the capacitance that generates be GIS disc insulator distribution capacity, electricity is then distributed with GIS disc insulators
Hold as the measuring device high-voltage arm, with the divider 1 in the present apparatus for the measuring device low-voltage arm, measure GIS inner guides 14
With the voltage between GIS shells 15, the voltage signal measured is transmitted to operational amplification circuit 17 by coaxial cable 16, through filter
Output is shown to oscillograph after wave, voltage follow and voltage amplification, is reached flexible, accurate GIS high side voltages and is surveyed
The effect of amount.
Electricity between GIS inner guides and shell can be obtained by simple bus voltage measurement device using the utility model
Signal (including power-frequency voltage and transient voltage) is pressed, achievees the purpose that monitor the operating status of GIS in real time.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this reality
With novel principle, it should be understood that the scope of protection of the utility model is not limited to such specific embodiments and embodiments.
Those of ordinary skill in the art can these technical inspirations according to disclosed in the utility model make and various do not depart from this practicality
Novel substantive other various specific deformations and combination, these deformations and combination are still within the protection scope of the present utility model.
Claims (9)
1. a kind of bus voltage measurement device based on GIS disc insulator distribution capacity, it is characterised in that：It is exhausted with GIS benzvalene forms
Edge distribution capacity is high-voltage arm, and the divider (1) to be connect with GIS disc insulators (13) is measured and led in GIS for low-voltage arm
Voltage between bar and GIS shells, measuring signal are transmitted to through coaxial cable (16) after being handled by operational amplification circuit and show list
Member.
2. the bus voltage measurement device according to claim 1 based on GIS disc insulator distribution capacity, it is characterised in that
The divider (1) connects including divider shell (2), the BNC for being installed on divider outer casing bottom, being connect with coaxial cable (16)
Head (3), the banana head connector (5) being connect with build-out resistor, is installed on point the build-out resistor (4) being connect with BNC connector (3)
The head cover (9) of depressor cover top portion, with GIS disc insulators (13) outer surface fitting disc insulator contact electrode (12) with
And the T-shaped conductive compressing member (8) of electrode (12) connection is contacted with disc insulator across head cover；Divider shell (2) bottom
Portion center is respectively designed with the first boss and second boss of cylinder-shaped inwardly or outwardly protrusion, the first boss and T
Type conduction compressing member (8) will be set to low-voltage arm Resistor-Capacitor Unit (7) between the two and compress, and the BNC connector (3) is fixed on the
On two boss annular end faces, the banana head connector is installed on first boss barrel type intracavitary and passes through low-voltage arm capacitance-resistance member
Part (7) is stretched into T-shaped conductive compressing member (8) central cavity, and banana head connector is heaved in position and T-shaped conductive compressing member (8)
Portion's cavity inner wall fitting.
3. the bus voltage measurement device according to claim 2 based on GIS disc insulator distribution capacity, it is characterised in that
Two or more spring levers are provided on the head cover (9), each spring lever tip designs have the screw rod with GIS shells (15) to connect
Hook (11).
4. the bus voltage measurement device according to claim 3 based on GIS disc insulator distribution capacity, it is characterised in that
The compressing member (8) is to be threadedly coupled between electrode (12) is contacted with disc insulator.
5. the bus voltage measurement device according to claim 3 based on GIS disc insulator distribution capacity, it is characterised in that
It is provided with T-shaped divider insulator (6) between the head cover (9) and compressing member (8), T-shaped divider insulator (6) end is from top
Lid (9) center is pierced by.
6. the bus voltage measurement device according to claim 5 based on GIS disc insulator distribution capacity, it is characterised in that
To be threadedly coupled between the divider insulator (6) and compressing member (8).
7. the bus voltage measurement device according to claim 2 based on GIS disc insulator distribution capacity, it is characterised in that
The low-voltage arm Resistor-Capacitor Unit (7) disc structure in a ring, pcb board or electrolytic thin-membrane for surface mount elements composition.
8. the bus voltage measurement based on GIS disc insulator distribution capacity according to claim 2 to 7 any claim
Device, it is characterised in that divider (1) rear end is provided with operational amplification circuit (17) or list with filtering, enlarging function
Piece machine, divider (1) are connect with operational amplification circuit or microcontroller by coaxial cable.
9. the bus voltage measurement device according to claim 8 based on GIS disc insulator distribution capacity, it is characterised in that
The display unit is oscillograph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721728402.9U CN207516494U (en) | 2017-12-13 | 2017-12-13 | A kind of bus voltage measurement device based on GIS disc insulator distribution capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721728402.9U CN207516494U (en) | 2017-12-13 | 2017-12-13 | A kind of bus voltage measurement device based on GIS disc insulator distribution capacity |
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| Publication Number | Publication Date |
|---|---|
| CN207516494U true CN207516494U (en) | 2018-06-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721728402.9U Withdrawn - After Issue CN207516494U (en) | 2017-12-13 | 2017-12-13 | A kind of bus voltage measurement device based on GIS disc insulator distribution capacity |
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|---|---|
| CN (1) | CN207516494U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907806A (en) * | 2017-12-13 | 2018-04-13 | 国网四川省电力公司电力科学研究院 | A kind of bus voltage measurement device based on GIS disc insulator distribution capacity |
| CN114002289A (en) * | 2022-01-04 | 2022-02-01 | 苏州大学 | Transient photovoltage test sample assembly, transient photovoltage measurement device and method |
-
2017
- 2017-12-13 CN CN201721728402.9U patent/CN207516494U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907806A (en) * | 2017-12-13 | 2018-04-13 | 国网四川省电力公司电力科学研究院 | A kind of bus voltage measurement device based on GIS disc insulator distribution capacity |
| CN114002289A (en) * | 2022-01-04 | 2022-02-01 | 苏州大学 | Transient photovoltage test sample assembly, transient photovoltage measurement device and method |
| CN114002289B (en) * | 2022-01-04 | 2022-03-22 | 苏州大学 | Transient photovoltage test sample assembly, transient photovoltage measurement device and method |
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