CN206114751U - Reactive power compensator's current test device - Google Patents
Reactive power compensator's current test device Download PDFInfo
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- CN206114751U CN206114751U CN201621059769.1U CN201621059769U CN206114751U CN 206114751 U CN206114751 U CN 206114751U CN 201621059769 U CN201621059769 U CN 201621059769U CN 206114751 U CN206114751 U CN 206114751U
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- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 5
- 238000003556 assay Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 4
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
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- 101001053992 Homo sapiens Deleted in lung and esophageal cancer protein 1 Proteins 0.000 description 1
- 101000966403 Homo sapiens Dynein light chain 1, cytoplasmic Proteins 0.000 description 1
- 101001106322 Homo sapiens Rho GTPase-activating protein 7 Proteins 0.000 description 1
- 102100021446 Rho GTPase-activating protein 7 Human genes 0.000 description 1
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- 230000015556 catabolic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
The utility model relates to a reactive power compensator's current test device, including current detection equipment and photoelectric conversion equipment to reach the power supply unit for current detection equipment and the power supply of photoelectric conversion equipment, power supply unit is including intersecting hot backup circuit and DCDC circuit, it is whole alternately hot backup circuit is equipped with three interface, is first input interface, second input interface and output interface respectively, first input interface, second input interface are used for respectively linking to each other with at least one adjacent power module, get the electricity, the power module is reactive power compensator's power module. When one of them input interface connection's power module when breaking down, alternately hot backup circuit will get the current potential and put and switch to another input interface (the power module that corresponds) to improve the reliability of getting the electricity from high -pressure system reactive power compensator.
Description
Technical field
This utility model is related to high-tension current technical field of measurement and test, and in particular to a kind of testing current of reactive power compensator
Device.
Background technology
In electric power, electronic application, the collection of current signal, measurement are extremely universal.Current signal is mainly used in system control
The aspects such as system, protection.The measurement of current signal, typically need to be by measuring apparatus such as current transformer, current Halls.
For mesohigh equipment, such as mesohigh reactive power compensator (rated voltage is higher than 1kV), the electric current letter for collecting
Number, should not be conveyed directly to nurse one's health conversion equipment and control system.Its reason is：Current test point is located at mesohigh primary line
Road, and control system is generally low-voltage equipment, there is electric potential difference between the two, needs to design enough electric insulation distances, to protect
Card electric potential difference between the two is required less than the dielectric strength of test equipment, and causes insulation breakdown.System voltage is higher, needs
Insulation distance it is bigger, this problem is also more prominent.If using the current transformer of mesohigh, current signal can be measured.But
General current transformer, it is impossible to measure the DC component of electric current, it is impossible to realize comprehensively, be effectively protected.Can be with if adopted
The current Hall of measurement DC component, needs the power supply just can be with normal work.
Notification number discloses a kind of current detection circuit of transmission line of electricity for the Chinese patent document of CN204719111U, wraps
Include current detecting equipment and photoelectric conversion device, the power taking and for current detecting equipment and light from high-tension line of transformer power supply
Electric conversion equipment is powered.
The primary system of reactive power compensator is formed by the cascade of multiple chain links, as shown in figure 1, each chain link is a power
Module (such as H bridge modules).These chain links can be as power taking chain link, i.e., from the AC port power taking of power model.From wherein entering
Horizontal high voltage power taking is powered for current sensing means, and not only power taking is convenient, and being capable of reduces cost.But this method reliability
Difference, once the chain link of power taking breaks down, current sensing means is by cisco unity malfunction.
Utility model content
This utility model provides a kind of current testing device of reactive power compensator, for solve it is above-mentioned from high-pressure system without
The problem of poor reliability during Reactive power compensation installations power taking.
A kind of current testing device of reactive power compensator, including current detecting equipment and photoelectric conversion device, Yi Jiwei
The electric supply installation that current detecting equipment and photoelectric conversion device are powered, the electric supply installation includes DC/DC circuits；The confession Denso
To put also include and intersect stand-by heat circuit；
The intersection stand-by heat circuit is provided with three interfaces, respectively the first input interface, the second input interface and output
Interface；First input interface, the second input interface are respectively used to be connected with least one adjacent power model, the power mould
Block is the power model of reactive power compensator, and DC side is provided with electric capacity；Output port is used to connect DC/DC circuits；
First input interface connects the output port by the normally opened contact of the first relay；
Second input interface connects the output port by the normally opened contact of the second relay；
First input interface is also in parallel with the first interlock circuit, and the first interlock circuit includes the line of the first relay of series connection
Circle, the normally-closed contact of the second relay；
Second input interface is also in parallel with the second interlock circuit, and the second interlock circuit includes the line of the second relay of series connection
Circle, the normally-closed contact of the first relay.
Further, intersect stand-by heat circuit output interface be provided with electric capacity and resistant series into circuit, wherein electricity
Diode is parallel with resistance, the positive pole connection electric capacity of diode, negative pole connection intersects the output interface of stand-by heat circuit.
Further, the current detecting equipment is current Hall device.
Further, in first input interface and the second input interface connection corresponding power of the intersection stand-by heat circuit
On the circuit of module, respectively string is provided with the first high voltage power supply and the second high voltage power supply.
Further, on the circuit of first high voltage power supply and the second high voltage power supply connection corresponding power module, point
First fuse interface board and second fuse interface board Chuan be provided with.
Further, first input interface and the second input interface for intersecting stand-by heat circuit connects respectively adjacent
Power model.
A kind of current testing device of reactive power compensator that this utility model is provided, is provided with high-voltage power transmission device
Intersect stand-by heat circuit, the circuit is provided with two input interfaces, when one of input interface is from the power of reactive power compensator
When module power taking occurs abnormal, immediately using another input interface power taking, so as to improve from high-pressure system reactive power compensator
Chain link electricity-fetching method reliability.
In the delivery outlet for intersecting stand-by heat circuit, arrange electric capacity and resistant series into circuit, ensure that current detecting
The seriality that equipment and photoelectric conversion device are powered, further increases the reliability of current sensing means work.
First high voltage power supply and the second high voltage power supply are set, the high tension voltage obtained from power model can be reduced, prevent
Only voltage is excessive and infringement intersects stand-by heat circuit and rear class equipment.
First fuse interface board and second fuse interface board are set, the first high voltage power supply or the second high pressure is prevented from
Power supply or rear class equipment cause damage when breaking down to primary system, it is ensured that the reliability of primary system work.
The first input interface and the second input interface for intersecting stand-by heat circuit connects respectively adjacent power model, can
Avoid the occurrence of Insulation Problems.
Description of the drawings
Fig. 1 is the chain link schematic diagram of high-pressure system reactive power compensator；
Fig. 2 is the circuit diagram of current sensing means in embodiment；
Fig. 3 is the circuit diagram of first chain link in embodiment；
Fig. 4 is the circuit diagram of second chain link in embodiment；
Fig. 5 is the circuit diagram for intersecting stand-by heat circuit in embodiment；
Fig. 6 is the schematic diagram that embodiment mesohigh power supply connects current sensing means.
Specific embodiment
This utility model provides a kind of current testing device of reactive power compensator, increases in the circuit for entering horizontal high voltage power taking
If intersecting stand-by heat circuit, so as to the reliability of strengthening electric current detection means.
This utility model is described in detail below in conjunction with the accompanying drawings.
A kind of current testing device of reactive power compensator that the present embodiment is provided, including current detecting equipment, photoelectricity turn
Exchange device and electric supply installation.The electric supply installation includes intersecting stand-by heat circuit and DC/DC circuits.
Current detecting equipment and light Denso exchange device are as shown in Fig. 2 testing current equipment is used for nothing in testing high voltage circuit
The current signal of Reactive power compensation installations, and send it to photoelectric conversion device；Current signal is converted into light by photoelectric conversion device
Control system, the electric current that control system is drawn in reactive power compensator by the optical signal for receiving are sent to after signal.
First power model used in the present embodiment, the i.e. circuit diagram of first chain link as shown in figure 3, including by
First bridge rectifier of T1, T2, T3 and T4 connection composition, wherein T1, T2, T3 and T4 is the IGBT for including diode；
The DC side of the first bridge rectifier is simultaneously provided with resistance R1 and electric capacity C1, and connects the first high pressure by fuse interface board RDQ1
Power supply DY1, the first high voltage power supply DY1 is used for the near 220V DC voltages of voltage that will be obtained from power model.
Second power model used in the present embodiment, the i.e. circuit diagram of second chain link as shown in figure 4, including by
Second bridge rectifier of T5, T6, T7 and T8 connection composition, wherein T5, T6, T7 and T8 is the IGBT for including diode；
The DC side of the second bridge rectifier is simultaneously provided with resistance R2 and electric capacity C2, and connects the second high pressure by fuse interface board RDQ2
Power supply DY2, the second high voltage power supply DY2 is used for the near 220V DC voltages of voltage that will be obtained from power model.
Intersect stand-by heat circuit as shown in figure 5, wherein terminal vo1+ and vo1- is the first input interface, vo2+ and vo2- is
Second input interface, vo3+ and vo3- are output interface.
Wherein the first input interface and the second input interface, for connecting high-tension line in the adjacent chain of reactive power compensator
Section, output interface is used to connect DC/DC circuits (DY3).Here chain link refers to power model.That is, such as the first input interface connects
Chain link section 1 (the first high voltage power supply (DY1) outfan), (the second high voltage power supply (DY2) of the second input interface connection chain link 2
Outfan), chain link 1 is adjacent with chain link 2；Or the first input interface connection chain link 1, chain link 2, the connection of the second input interface
Chain link 3, chain link 4, chain link 1,2,3,4 is adjacent.Insulation Problems can be avoided the occurrence of during power taking in adjacent chain link power taking.
Intersect the first input interface of stand-by heat circuit by the normally opened of the first interconnection switch 1Q3 and the first relay 2KM1
Contact portion output interface, second interface connects defeated by the normally opened contact of the second interconnection switch 2Q3 and the second relay 2KM2
Outgoing interface.String is provided with the first relay between the two lines road of the first input interface the first relay 2KM1 normally opened contacts of connection
The normally-closed contact of the coil of 2KM1 and the second relay 2KM2, the second input interface connects the second relay 2KM2 normally opened contacts
String is provided with the coil of the second relay 2KM2 and the normally-closed contact of the first relay 2KM1 between two lines road.In output interface
String is provided with electric capacity C3 and resistance R3 between two terminals vo3+ and vo3-, on resistance R3 and is provided with diode D1, diode D1
Positive pole connection electric capacity C3, negative pole connection intersect stand-by heat circuit output interface vo3+ terminals；In the first input interface and defeated
Also string is provided with diode D2 on the circuit of outgoing interface, and the negative pole of diode D2 connects the vo3+ terminals of output interface, positive pole connection
The normally opened contact of the first relay 2KM1.
Intersect outfan connection DC/DC power supply DY3 (i.e. DC/DC circuits) of stand-by heat circuit, DC/DC power supply DY3 are used for
Voltage is reduced to into 15V DC voltages, the respectively current testing device such as current sample plate DLC1 and current Hall HR1 is powered, such as
Shown in Fig. 6.
In the present embodiment, in order to ensure the seriality that current detecting equipment and photoelectric conversion device are powered, heat is being intersected
String is provided with electric capacity C3 and resistance R3 between two terminals vo3+ and vo3- of the output interface of stand-by circuit, on resistance R3 and sets
There is diode D1.As other embodiment, when current detecting equipment and photoelectric conversion device are not to power supply continuity requirement
When very high, electric capacity C3 and resistance R3 can be not provided with.
In the present embodiment, by the first high voltage power supply or the second high voltage power supply, and DC/DC power supplys DY3 is by commutator
High tension voltage after rectification is by the 15V DC voltages for needed for current detecting equipment and photoelectric conversion device.As other enforcements
Mode, can be reduced to the unidirectional current of 15V using multiple or only with a direct-current voltage reducing circuit by the DC voltage after rectification
Pressure.
The specific embodiment that this utility model is related to is presented above, but this utility model is not limited to described reality
Apply mode.Under the thinking that this utility model is given, to above-mentioned by the way of being readily apparent that to those skilled in the art
Technological means in embodiment enter line translation, replacement, modification, and play a part of and the relevant art handss in this utility model
Section is essentially identical, utility model purpose that is realizing is also essentially identical, and the technical scheme for so being formed is that above-described embodiment is carried out
What fine setting was formed, this technical scheme is still fallen within protection domain of the present utility model.
Claims (6)
1. a kind of current testing device of reactive power compensator, including current detecting equipment and photoelectric conversion device, and for electricity
The electric supply installation that flow assay device and photoelectric conversion device are powered, the electric supply installation includes DC/DC circuits；Characterized in that,
The electric supply installation also includes intersecting stand-by heat circuit；
The intersection stand-by heat circuit is provided with three interfaces, respectively the first input interface, the second input interface and output interface；
First input interface, the second input interface are respectively used to be connected with least one adjacent power model, and the power model is
The power model of reactive power compensator, DC side is provided with electric capacity；Output port is used to connect DC/DC circuits；
First input interface connects the output port by the normally opened contact of the first relay；
Second input interface connects the output port by the normally opened contact of the second relay；
First input interface is also in parallel with the first interlock circuit, and the first interlock circuit includes the coil of the first relay of series connection,
The normally-closed contact of the second relay；
Second input interface is also in parallel with the second interlock circuit, and the second interlock circuit includes the coil of the second relay of series connection,
The normally-closed contact of the first relay.
2. the current testing device of a kind of reactive power compensator according to claim 1, it is characterised in that hot standby intersecting
With the output interface of circuit be provided with electric capacity and resistant series into circuit, wherein resistor in parallel has diode, and diode is just
Pole connects electric capacity, and negative pole connection intersects the output interface of stand-by heat circuit.
3. a kind of current testing device of reactive power compensator according to claim 1, it is characterised in that the electric current inspection
Measurement equipment is current Hall device.
4. the current testing device of a kind of reactive power compensator according to claim 1, it is characterised in that in the intersection
On the circuit of the first input interface of stand-by heat circuit and the second input interface connection corresponding power module, respectively string is provided with first
High voltage power supply and the second high voltage power supply.
5. the current testing device of a kind of reactive power compensator according to claim 4, it is characterised in that described first
On the circuit of high voltage power supply and the second high voltage power supply connection corresponding power module, respectively string is provided with first fuse interface board and the
Two fuse interface boards.
6. a kind of current testing device of reactive power compensator according to claim 1, it is characterised in that the intersection heat
First input interface and the second input interface of stand-by circuit connects respectively adjacent power model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621059769.1U CN206114751U (en) | 2016-09-18 | 2016-09-18 | Reactive power compensator's current test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621059769.1U CN206114751U (en) | 2016-09-18 | 2016-09-18 | Reactive power compensator's current test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114751U true CN206114751U (en) | 2017-04-19 |
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ID=58520035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621059769.1U Active CN206114751U (en) | 2016-09-18 | 2016-09-18 | Reactive power compensator's current test device |
Country Status (1)
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| CN (1) | CN206114751U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142855A (en) * | 2018-08-31 | 2019-01-04 | 辽宁荣信兴业电力技术有限公司 | A kind of load current detection method inhibiting SVG device for electric network voltage flicker |
| CN111239584A (en) * | 2019-12-31 | 2020-06-05 | 视航机器人（佛山）有限公司 | Mainboard testing device, system and method applied to unmanned forklift |
-
2016
- 2016-09-18 CN CN201621059769.1U patent/CN206114751U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142855A (en) * | 2018-08-31 | 2019-01-04 | 辽宁荣信兴业电力技术有限公司 | A kind of load current detection method inhibiting SVG device for electric network voltage flicker |
| CN109142855B (en) * | 2018-08-31 | 2020-10-09 | 辽宁荣信兴业电力技术有限公司 | Load current detection method for power grid voltage flicker suppression SVG device |
| CN111239584A (en) * | 2019-12-31 | 2020-06-05 | 视航机器人（佛山）有限公司 | Mainboard testing device, system and method applied to unmanned forklift |
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