CN202522681U - High-low voltage combination power station load testing device - Google Patents
High-low voltage combination power station load testing device Download PDFInfo
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- CN202522681U CN202522681U CN2012200615680U CN201220061568U CN202522681U CN 202522681 U CN202522681 U CN 202522681U CN 2012200615680 U CN2012200615680 U CN 2012200615680U CN 201220061568 U CN201220061568 U CN 201220061568U CN 202522681 U CN202522681 U CN 202522681U
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Abstract
The utility model discloses a high-low voltage combination power station load testing device. The device comprises a switching box and at least one power resistor group. The each power resistor group comprises a first resistor, a second resistor and a third resistor. The switching box is provided with a first input terminal, a first output terminal, a second input terminal, a second output terminal, a third input terminal and a third output terminal. The switching box and the power resistor group are connected with a testing power supply. The power resistor group changes circuit connection through the switching box so as to test the testing power supply. Compared to the prior art, the testing device adapts high-low voltage conversion of the testing power supply through switching a connection mode of a load resistor by the switching box and can adapt many electric system requirements of the testing power supply.
Description
Technical field
The utility model relates to a kind of load testing device of testing power supply, and especially a kind of have a high-low pressure modular station load testing device.
Background technology
In offshore platform, often need test the load capacity of the generator after new clothes in the offshore platform or the overhaul.The traditional load proving installation adopts transformer and load equipment combination to test; Because meritorious high power device does not have high tension apparatus; Therefore the load equipment generally adopts low-voltage equipment, and the transformer that has the high pressure tap through configuration carries out transformation, realizes the test of different electric system generator.Because general central platform high-voltage generator single-machine capacity is bigger, the load equipment that is equipped with by traditional approach need be equipped with the transformer of equal capacity, causes on the one hand that load testing equipment is heavy, the testing apparatus investment is big; The transformer that adopts on the one hand in addition can produce a large amount of combined floodgate exiting pour currents to test environment and impact, and causes the misoperation of protection equipment for generator.
And; The electricity system of the generator output of using in the offshore platform is more, and height piezoelectricity systems such as 10.5kV, 6kV, 4.16kV are arranged, in order to be suitable for the height piezoelectricity system of generator; Often need require to prepare a plurality of load testing devices according to electricity system, cause a large amount of wastes.
The utility model content
To the deficiency of prior art, the purpose of the utility model is that a kind of height high-low pressure modular station load testing device piezoelectricity system, with low cost that adapts to will be provided.
For realizing above-mentioned purpose, the technical scheme that the described high-low pressure modular station of the utility model load testing device adopts is following:
A kind of high-low pressure modular station load testing device; Comprise an a-b box and at least one group of power resistor group; Every group of power resistor group comprises second resistance of first resistance of some mutual series connection, some mutual series connection and the 3rd resistance of some mutual series connection; Said a-b box is provided with the first input end and first output terminal, second input end and second output terminal, the 3rd input end and the 3rd output terminal;
The head end of first resistance of said series connection is connected with first of testing power supply, and end is connected with second input end; The second resistance head end of this series connection is connected with second of testing power supply, and end is connected with the 3rd output terminal; The 3rd resistance head end of this series connection is connected with the third phase of testing power supply, and terminal and said first output terminal is connected; Said first input end, second input end and the 3rd input end respectively with testing power supply first mutually, second be connected with third phase mutually.Concrete, this first resistance, second resistance and the 3rd resistance can make the power resistor of consumption active power or the reactor of consume reactive power.
Preferably, at least two group power resistors, the spacing in said every group of power resistor between the identical resistance that is connected with testing power supply less than with the different resistance that are connected of testing power supply between spacing.
Further, also comprise a switch, said switch is located between said testing power supply and the said power resistor group, is used to open/break off being connected of said power resistor group and testing power supply.
Concrete, said switch is a high-pressure vacuum contactor.
Further, also comprise a controller, be used to control the unlatching/disconnection of said switch.
Preferably, adopt high-tension bus-bar to connect in this proving installation.
In above-mentioned preferred implementation, said first resistance, second resistance and the 3rd resistance adopt the High-Voltage Insulation plate to support.
With respect to prior art; The described proving installation of the utility model switches the high-low pressure conversion that comes the adaptive testing power supply through a-b box to the connected mode of power resistor group; Not only simple in structure, with low cost, and multi-electric system requirement that can the adaptive testing power supply; Secondly, through some power resistors of connecting high pressure is carried out dividing potential drop and can test, need not to increase transformer, effectively reduced the cost of load testing device, avoid transformer that test environment is produced the combined floodgate exiting pour current and impact the Hi-pot test power supply.
For purpose, characteristic and the effect of understanding the utility model fully, below will combine accompanying drawing that the technique effect of design, concrete structure and the generation of the utility model is described further.
Description of drawings
Fig. 1 is the structural representation of the said proving installation of the utility model;
Fig. 2 is the synoptic diagram that divider resistance is installed through the High-Voltage Insulation plate;
Among the figure:
The 1-a-b box; The 11-first input end; 12-first output terminal; 13-second input end; 14-second output terminal; 15-the 3rd input end; 16-the 3rd output terminal; 2-power resistor group; 21-first resistance; 22-second resistance; 23-the 3rd resistance; The 3-testing power supply; 31-first phase; 32-second phase; The 33-third phase; The 4-switch; The 5-controller; 6-High-Voltage Insulation plate.
Embodiment
As depicted in figs. 1 and 2; A kind of high-low pressure modular station load testing device comprises a-b box 1 and at least one group of power resistor group 2, and this a-b box 1 is connected with testing power supply 3 with power resistor group 2; Power resistor group 2 changes circuit connection structure through a-b box 1; Testing power supply 3 is tested, and wherein the resistance in the power resistor group 2 can be the power resistor of consumption active power or the reactor of consume reactive power, and testing power supply 3 can be high-voltage generator to be tested.
A-b box 1 is provided with first input end 11 and first output terminal 12, second input end 13 and second output terminal 14; And the 3rd input end 15 and the 3rd output terminal 16, wherein first input end 11, second input end 13 and the 3rd input end 15 31, second 32 are connected with third phase 33 with first of power supply 3 to be measured respectively mutually mutually.During use; Can first input end 11 be connected with first input end 12 according to the test needs; Second input end 13 is connected with second output terminal 14, and the 3rd input end 15 is connected with the 3rd output terminal 16, perhaps first output terminal 12, second output terminal 14 and the 3rd output terminal 16 is linked together.
Comprise first resistance 21 of some mutual series connection, second resistance 22 of some mutual series connection and the 3rd resistance 23 of some mutual series connection in the power resistor group 2; Each is organized the number needs of resistance in series and will confirm according to practical application; Phase voltage like testing power supply 3 is 6kV; The withstand voltage of resistance in each power resistor group 2 is 400V, then every 6000/400=15 resistance of need connecting mutually.
First of these first resistance, 21 1 ends and testing power supply 3 31 connects mutually, and an other end is connected with second input end 14; Second of these second resistance, 22 1 ends and testing power supply 3 32 connects mutually, and an other end is connected with the 3rd output terminal 16; The 3rd resistance 23 1 ends are connected with the third phase 33 of testing power supply 3, and an other end is connected with said first output terminal 12.In practical application, the quantity of power resistor group 2 can confirm according to actual needs that each power resistor group 2 is parallel with one another.For example; Can the resistance in the power resistor group 2 be adopted and consume seven groups of active power power resistors; The general power setting of its consumption is respectively: 100kW, 100kW, 200kW, 400kW, 600kW, 800kW, 800kW; And six groups of the reactors of consume reactive power, be respectively 100kVAR, 100kVAR, 200kVAR, 400kVAR, 600kVAR, 800kVAR.Just to obtain minimum resolution be 100kW or more than the 100kVAR in unlatching or closed through the said switch 6 of controller 5 control according to the needs of test; Max cap. is the reactive power that power and 2200kVAR are arranged of 3000kW, and realizes the load testing of power supply corresponding power.
In order to improve the security performance of proving installation, all adopt High-Voltage Insulation plate 6 to support to first resistance 21, second resistance 22 and the 3rd resistance 23 in the power resistor group 2, to improve the resistance insulating property over the ground in the power resistor group 2.Resistance in the power resistor group 2 is fixing through High-Voltage Insulation back up pad 6, realizes the insulation against ground of power tube shell, thereby has guaranteed the dielectric strength of power resistor.
Preferably; If adopt many group power resistor groups 2 in the proving installation; Can adopt the phase-splitting insulation pattern to carry out layout to these many group power resistor groups 2; Same phase load power resistor is concentrated and is set together, and the layout design method of different alternate increasing safe spacings has so just guaranteed alternate insulation safety.Two groups of power resistor groups 2 have been adopted in the present embodiment; First resistance 21 of these two groups of power resistor groups 2 is put together; Second resistance 22 puts together; And the 3rd resistance 23 put together, wherein the distance between first resistance 21 of each power resistor group 2 is less than the distance between first resistance 22 or second resistance 23.Second resistance 22 is also adopted identical layout type setting with the 3rd resistance 23.
In order to improve the security performance of proving installation, this proving installation also comprises a controller 5 and some switches 4, and switch 4 is located between every group of power resistor group 2 and the testing power supply 3, is used to open/break off being connected between power resistor group 2 and the testing power supply 3.Preferably, switch 4 adopts high-pressure vacuum contactor, and the leads for connecting in this proving installation all adopts high-tension bus-bar to connect.
During use, first output terminal 12, second output terminal 14 and the 3rd output terminal 16 are linked together, make first resistance 21, second resistance 22 and the 3rd resistance 23 in the power resistor group 2 constitute star-like connections.First input end 11 is connected with first input end 12; Second input end 13 is connected with second output terminal 14, and the 3rd input end 15 is connected first resistance 21, second resistance 22 that make in the power resistor group 2 and constitutes triangles with the 3rd resistance 23 and be connected with the 3rd output terminal 16.
Under the triangle type of attachment, the WV of each resistance is respectively the line voltage U on the power resistor group 2
1, the power that consumes on it is P
1Under the Y-connection form, the WV of each resistance is phase voltage U on the power resistor group 2
2According to electrical theory,
And power directly with power resistor on square being directly proportional of WV, the therefore power P of consumption on the power resistor group 2 under the star-like type of attachment
2For:
So, be compared to triangle and connect, under Y-connection, get power on the power resistor group 2 and diminished.If under the Y-connection form; With testing power supply voltage raising
doubly; The power that then consumes under the power that under Y-connection, consumes of power resistor group 2 and the triangle type of attachment is consistent; Therefore, also just realized the power of test of two-stage different electrical power voltage.
If the rated voltage of resistance is 400 volts in the power resistor group 2, under triangle connected, the voltage on first resistance 21, second resistance 22 and the 3rd resistance 23 of power resistor group 2 was 400 volts; And under the Y-connection state; If the voltage on first resistance 21, second resistance 22 and the 3rd resistance 23 of power resistor group 2 is 400 volts; Then the voltage of testing power supply is
therefore when testing power supply 3 is 600V; Through a-b box 1 power resistor 2 is transformed into Y-connection; Square being directly proportional of power on the power resistor group 2 and voltage; Therefore, under the test pattern of 600V, can reach 75% of design capacity tests.
Under high pressure conditions, the voltage that adopts divider resistance group 5 to reduce on the power resistor groups 2, the test load equipment that the mode through graded insulation and series connection dividing potential drop makes up can be applied to the test of Hi-pot test power supply directly as high-voltage load.
With respect to prior art; The described proving installation of the utility model switches the high-low pressure conversion that comes the adaptive testing power supply through a-b box to the connected mode of pull-up resistor; Not only simple in structure, with low cost, and multi-electric system requirement that can the adaptive testing power supply; Secondly,, need not transformer and can carry out Hi-pot test, effectively reduced the cost of load testing device, avoid transformer that test environment is produced the combined floodgate exiting pour current and impact through adopting some power resistors dividing potential drop of connecting in the power resistor group.
More than describe the preferred embodiment of the utility model in detail, the ordinary skill that should be appreciated that this area need not creative work and just can make many modifications and variation according to the design of the utility model.Therefore, all technician in the art according to the utility model design on the prior art basis through logic analysis, reasoning perhaps according to the available technical scheme of limited experiment, all should be among determined protection domain by these claims.
Claims (7)
1. high-low pressure modular station load testing device; It is characterized in that; Comprise an a-b box and at least one group of power resistor group, every group of power resistor group comprises second resistance of first resistance of some mutual series connection, some mutual series connection and the 3rd resistance of some mutual series connection, and said a-b box is provided with the first input end and first output terminal; Second input end and second output terminal, the 3rd input end and the 3rd output terminal;
The head end of first resistance of said series connection is connected with first of testing power supply, and end is connected with second input end; The second resistance head end of this series connection is connected with second of testing power supply, and end is connected with the 3rd output terminal; The 3rd resistance head end of this series connection is connected with the third phase of testing power supply, and terminal and said first output terminal is connected; Said first input end, second input end and the 3rd input end respectively with testing power supply first mutually, second be connected with third phase mutually.
2. proving installation as claimed in claim 1 is characterized in that, at least two group power resistors, the spacing in said every group of power resistor between the identical resistance that is connected with testing power supply less than with the different resistance that are connected of testing power supply between spacing.
3. proving installation as claimed in claim 2 is characterized in that, also comprises a switch, and said switch is located between said testing power supply and the said power resistor group, is used to open/break off being connected of said power resistor group and testing power supply.
4. proving installation as claimed in claim 3 is characterized in that, said switch is a high-pressure vacuum contactor.
5. proving installation as claimed in claim 4 is characterized in that, also comprises a controller, is used to control the unlatching/disconnection of said switch.
6. proving installation as claimed in claim 5 is characterized in that, adopts high-tension bus-bar to connect in this proving installation.
7. like each described proving installation of claim 1 to 6, it is characterized in that said first resistance, second resistance and the 3rd resistance adopt the High-Voltage Insulation plate to support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200615680U CN202522681U (en) | 2012-02-23 | 2012-02-23 | High-low voltage combination power station load testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200615680U CN202522681U (en) | 2012-02-23 | 2012-02-23 | High-low voltage combination power station load testing device |
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| CN202522681U true CN202522681U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200615680U Expired - Fee Related CN202522681U (en) | 2012-02-23 | 2012-02-23 | High-low voltage combination power station load testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630835A (en) * | 2013-11-11 | 2014-03-12 | 中国北车集团大连机车车辆有限公司 | Load device for wide-voltage class test of diesel alternating-current generator set |
| CN103852731A (en) * | 2012-12-05 | 2014-06-11 | 上海骏颉自动化设备有限公司 | Novel high voltage load box |
| CN105372592A (en) * | 2015-11-25 | 2016-03-02 | 重庆普什机械有限责任公司 | Load testing device |
| CN110275050A (en) * | 2018-03-13 | 2019-09-24 | 株洲中车时代电气股份有限公司 | A kind of network pressure mutation device and its control method |
| CN115327189A (en) * | 2022-07-13 | 2022-11-11 | 中国船舶电站设备有限公司 | High-voltage dry-type load test device and equipment |
-
2012
- 2012-02-23 CN CN2012200615680U patent/CN202522681U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852731A (en) * | 2012-12-05 | 2014-06-11 | 上海骏颉自动化设备有限公司 | Novel high voltage load box |
| CN103630835A (en) * | 2013-11-11 | 2014-03-12 | 中国北车集团大连机车车辆有限公司 | Load device for wide-voltage class test of diesel alternating-current generator set |
| CN105372592A (en) * | 2015-11-25 | 2016-03-02 | 重庆普什机械有限责任公司 | Load testing device |
| CN110275050A (en) * | 2018-03-13 | 2019-09-24 | 株洲中车时代电气股份有限公司 | A kind of network pressure mutation device and its control method |
| CN110275050B (en) * | 2018-03-13 | 2021-10-26 | 株洲中车时代电气股份有限公司 | Network voltage mutation device and control method thereof |
| CN115327189A (en) * | 2022-07-13 | 2022-11-11 | 中国船舶电站设备有限公司 | High-voltage dry-type load test device and equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170210 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Technology Co., Ltd. Patentee after: Energy development equipment technology Co., Ltd of CNOOC Patentee after: Zhanjiang Nanhai West Petroleum Hezhong Offshore Construction Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Energy Technology Co., Ltd. Patentee before: Zhanjiang Nanhai West Petroleum Hezhong Offshore Construction Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20200223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |