CN103944074B - The switchboard assembly of Voltage Drop device - Google Patents
The switchboard assembly of Voltage Drop device Download PDFInfo
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- CN103944074B CN103944074B CN201410093155.4A CN201410093155A CN103944074B CN 103944074 B CN103944074 B CN 103944074B CN 201410093155 A CN201410093155 A CN 201410093155A CN 103944074 B CN103944074 B CN 103944074B
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- voltage drop
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- drop device
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Abstract
The present invention relates to the switchboard assembly of a kind of Voltage Drop device, it is characterized in that, described switchboard assembly includes the first switch cubicle and second switch cabinet, described first switch cubicle comprises the multiple switch elements for controlling current-limiting reactor, described second switch cabinet comprises the multiple switch elements for controlling described short-circuit reactance device, wherein, described first switch cubicle and second switch cabinet are connected by flexible cable. Switchboard assembly of the present invention adopts the common gas tank design being encapsulated in same gas tank by multiple switch elements, avoid seal failure between the gas tank very easily occurred when multiple single gas tank switch connects and cause the fault of gas leakage, add the insulating properties between unit simultaneously, and there is the effect of the anti-salt of dust and moisture, improve the safety in operation of whole Voltage Drop device.
Description
Technical field
The present invention relates to new forms of energy to access and control field, in particular it relates to the switchboard assembly of a kind of Voltage Drop device.
Background technology
Since Eleventh Five-Year Plan, China's generation of electricity by new energy industry development is advanced by leaps and bounds, and wind-powered electricity generation adding new capacity is doubled year after year, and solar cell yield is fast-developing with the average growth rate per annum more than 100%. But, China's new forms of energy, while fast development, are also faced with new forms of energy and access quality and the safety problem that electrical network brings on a large scale. In order to ensure the generation of electricity by new energy such as wind-powered electricity generation, photovoltaic generation access on a large scale after the stablizing of electrical network, need when electrical network transient fault causes voltage rapid drawdown at short notice to certain value, the generator unit such as wind-powered electricity generation, photovoltaic still is able to run continually and steadily without departing from electrical network, until power system restoration is normal, thus " passing through " this low-voltage time, this ability is referred to as low voltage ride-through capability (LowVoltageRideThrough, LVRT).
Verify whether generator unit possesses low voltage ride-through capability, it is necessary to carry out, by specific Voltage Drop device, the Voltage Drop that simulating grid fault causes. At present, it is widely used in low voltage crossing scene is tested based on the switch cubicle switching reactor formula Voltage Drop device of impedance voltage divider principle. From functional structure, switch cubicle switching reactor formula Voltage Drop device mainly comprises current-limiting reactor, short-circuit reactance device and three functional parts of fling-cut switch cabinet. Fig. 1 illustrates the principle assumption diagram of Voltage Drop device. As shown in Figure 1, the series connection of Voltage Drop device accesses between electrical network and tested generator unit, current-limiting reactor 40 is put into reduce the Voltage Drop test impact on electrical network by by-pass switch cabinet 60, short-circuit reactance device 50 is put into produce short circuit malfunction, thus producing Voltage Drop in test point by short switch cabinet 70.
Due to Voltage Drop device in use, need to carry out test in different test site, so needing mobile Voltage Drop device, and device is controlled by the switch cubicle that device needs multiple not same-actions, so multiple switch cubicles can cause in the process moved owing to transport is jolted, displacement it is susceptible between switch cubicle, thus causing that the bus device connected between switch cubicle is damaged, simultaneously, the wind energy turbine set under high dust storm desert or moist high salt fog coastal environment and photovoltaic plant it is mainly used in due to Voltage Drop device, the easy corrosion potentials falling device of its rugged environment, cause the damage of device, even can reduce device insulating properties, produce problem for security.It addition, Voltage Drop device is typically mounted in the container of standard, due to limited space in case, multiple switch cubicle assemblies take up room relatively big, and so that device is compact, the small?gap suture between all parts easily produces collision, thus producing the problems such as short circuit.
Summary of the invention
The present invention provides the switchboard assembly of a kind of Voltage Drop device, two switch cubicles are used to be individually enclosed in wherein by multiple switch elements, and it is filled with insulating gas wherein, so can so that switch cubicle has the effect of the anti-salt of dust and moisture, add the insulating properties between unit simultaneously, improve the safety in operation of whole Voltage Drop device.
For this purpose, the present invention proposes the switchboard assembly of a kind of Voltage Drop device, it is characterized in that, described switchboard assembly includes the first switch cubicle and second switch cabinet, described first switch cubicle comprises the multiple switch elements for controlling current-limiting reactor, described second switch cabinet comprises the multiple switch elements for controlling described short-circuit reactance device, and wherein, described first switch cubicle and second switch cabinet are connected by flexible cable.
Wherein, described first switch cubicle and described second switch cabinet are respectively provided with the enclosed construction that multiple switch elements are packaged in a gas tank, and are filled with High-Voltage Insulation gas in described first switch cubicle and second switch cabinet.
Wherein, described insulating gas is SF6 gas.
Wherein, described first switch cubicle includes the first switch element, second switch unit, the 3rd switch element and the first main bus-bar, described first switch element, second switch unit and the 3rd switch element connect with described first main bus-bar respectively, described second switch cabinet includes the 4th switch element, the 5th switch element, the 6th switch element and the second main bus-bar, and described 4th switch element, the 5th switch element and the 6th switch element are connected with described second main bus-bar respectively.
Wherein, the circuit being connected with second switch unit outside described first switch cubicle arranges the first voltage transformer, the circuit being connected with described 4th switch element outside described second switch cabinet arranges the second voltage transformer.
Beneficial effect
Use the switchboard assembly of Voltage Drop device of the present invention, the switch element being connected to same main bus-bar is enclosed in same switch cubicle, the switch cabinet structure so making circuit is compact, and improve the stability of the connection of each switch element, simultaneously, can ensure that each switch element stress in a switch cubicle is consistent, relative motion will not be produced, be effectively improved the overall function of seismic resistance of switch cubicle; Simultaneously in switch cubicle, it is filled with High-Voltage Insulation gas, in switch cubicle when each switch element structure compact, it is ensured that insulating properties between each circuit in switch cubicle, thus reaching to reduce the purpose of switch cubicle volume; Additionally, use the switch cubicle sealed, can effectively place high voltage alive equipment and be subject to the impact of outside dust storm, moisture, salt fog etc., thus reaching dust and moisture to put the purpose of salt, the operation stability thereby may be ensured that the test performance of Voltage Drop device, improving device and the security performance guaranteeing in test process.
Accompanying drawing explanation
Being more clearly understood from the features and advantages of the present invention by reference accompanying drawing, accompanying drawing is schematic and should not be construed as and the present invention is carried out any restriction, in the accompanying drawings:
Fig. 1 illustrates the principle assumption diagram of existing Voltage Drop device.
Fig. 2 illustrates the structural representation of the switchboard assembly of the Voltage Drop device of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
Fig. 2 illustrates the structural representation of the switchboard assembly of the Voltage Drop device of the present invention.
With reference to Fig. 2, the switchboard assembly of the Voltage Drop device of embodiments of the invention includes the first switch cubicle 10 and second switch cabinet 20. First switch cubicle 10 includes the first switch element 101, second switch unit 102 and the 3rd switch element 103, and described second switch cabinet 20 includes the 4th switch element the 204, the 5th switch element 205 and the 6th switch element 206.
In the present embodiment, all of switch element of the first switch cubicle 10 and second switch cabinet 20 all adopts identical structure, and namely each switch element includes chopper, isolation switch and grounding switch. As the first switch element 101 includes chopper CB1, isolation switch S1 and grounding switch G1.
In the first switch cubicle 10, first switch element 101, second switch unit 102 and the 3rd switch element 103 are connected respectively to the first main bus-bar 107, in second switch cabinet 20, the 4th switch element the 204, the 5th switch element 205 and the 6th switch element 206 are connected respectively to the second main bus-bar 208.
In the first switch cubicle 10, electrical network and the first main bus-bar 107 are connected by described first switch element 101, current-limiting reactor 40 is connected in circuit by second switch unit 102, and the 3rd switch element 103, as by-pass switch, is used for controlling whether to be communicated in described circuit current-limiting reactor.
Second switch cabinet 20 is connected to the first switch cubicle 10 by flexible cable 30, in second switch cabinet 20,4th switch element 204 and the 6th switch element 206 are for being connected in circuit by second switch cabinet 20, and the second main bus-bar 208 is communicated in circuit, short-circuit reactance device 50, as short switch, is communicated in circuit by the 5th switch element 205.
In the present embodiment, the first switch cubicle 10 and second switch cabinet 20 are respectively provided with the enclosed construction that multiple switch elements are packaged in a gas tank, and are filled with High-Voltage Insulation gas wherein, such as SF6 gas, thus ensureing the insulating properties of switch cubicle.
The circuit being connected with second switch unit 102 outside first switch cubicle 10 arranges the first voltage transformer 110, for measuring the system access magnitude of voltage at described current-limiting reactor 40 place, the circuit being connected with described 4th switch element 204 outside described second switch cabinet 20 arranges the second voltage transformer 210, for measuring the test point drop-off voltage value at described short-circuit reactance device 50 place.
Use the switchboard assembly of Voltage Drop device of the present invention, the switch element being connected to same main bus-bar is enclosed in same switch cubicle, the switch cabinet structure so making circuit is compact, and improve the stability of the connection of each switch element, simultaneously, can ensure that each switch element stress in a switch cubicle is consistent, relative motion will not be produced, be effectively improved the overall function of seismic resistance of switch cubicle; Simultaneously in switch cubicle, it is filled with High-Voltage Insulation gas, in switch cubicle when each switch element structure compact, it is ensured that insulating properties between each circuit in switch cubicle, thus reaching to reduce the purpose of switch cubicle volume; Additionally, use the switch cubicle sealed, can effectively place high voltage alive equipment and be subject to the impact of outside dust storm, moisture, salt fog etc., thus reaching dust and moisture to put the purpose of salt, the operation stability thereby may be ensured that the test performance of Voltage Drop assay device, improving device and the security performance guaranteeing in test process.
Although being described in conjunction with the accompanying embodiments of the present invention, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such amendment and modification each fall within the scope being defined by the appended claims.
Claims (4)
1. the switchboard assembly of a Voltage Drop device, it is characterized in that, described switchboard assembly includes the first switch cubicle and second switch cabinet, described first switch cubicle comprises the multiple switch elements for controlling current-limiting reactor, described second switch cabinet comprises the multiple switch elements for controlling short-circuit reactance device, wherein, described first switch cubicle and second switch cabinet are connected by flexible cable;
Wherein, described first switch cubicle includes the first switch element, second switch unit, the 3rd switch element and the first main bus-bar, described first switch element, second switch unit and the 3rd switch element connect with described first main bus-bar respectively, described second switch cabinet includes the 4th switch element, the 5th switch element, the 6th switch element and the second main bus-bar, and described 4th switch element, the 5th switch element and the 6th switch element are connected with described second main bus-bar respectively.
2. the switchboard assembly of Voltage Drop device according to claim 1, it is characterized in that, described first switch cubicle and described second switch cabinet are respectively provided with the enclosed construction that multiple switch elements are packaged in a gas tank, and are filled with High-Voltage Insulation gas in described first switch cubicle and second switch cabinet.
3. the switchboard assembly of Voltage Drop device according to claim 2, it is characterised in that described insulating gas is SF6 gas.
4. the switchboard assembly of Voltage Drop device according to claim 1, it is characterized in that, the circuit being connected with second switch unit outside described first switch cubicle arranges the first voltage transformer, the circuit being connected with described 4th switch element outside described second switch cabinet arranges the second voltage transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410093155.4A CN103944074B (en) | 2014-03-13 | 2014-03-13 | The switchboard assembly of Voltage Drop device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410093155.4A CN103944074B (en) | 2014-03-13 | 2014-03-13 | The switchboard assembly of Voltage Drop device |
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| Publication Number | Publication Date |
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| CN103944074A CN103944074A (en) | 2014-07-23 |
| CN103944074B true CN103944074B (en) | 2016-06-15 |
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| CN201410093155.4A Active CN103944074B (en) | 2014-03-13 | 2014-03-13 | The switchboard assembly of Voltage Drop device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0673097A2 (en) * | 1994-03-18 | 1995-09-20 | Hitachi, Ltd. | Gas insulated switch gear device |
| CN102508157A (en) * | 2011-11-03 | 2012-06-20 | 中国电力科学研究院 | Low-voltage ride-through testing system of wind generating set |
| CN203119375U (en) * | 2013-01-18 | 2013-08-07 | 北京科力恒久电力技术股份有限公司 | A unit high-voltage AC metal-enclosed gas-insulated switch cabinet |
| CN103401173A (en) * | 2013-07-30 | 2013-11-20 | 上海天灵开关厂有限公司 | Common mounting cabinet of gas-insulated breaker |
| CN203850639U (en) * | 2014-03-13 | 2014-09-24 | 北京群菱能源科技有限公司 | A combined switch cabinet of a voltage drop apparatus |
-
2014
- 2014-03-13 CN CN201410093155.4A patent/CN103944074B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0673097A2 (en) * | 1994-03-18 | 1995-09-20 | Hitachi, Ltd. | Gas insulated switch gear device |
| CN102508157A (en) * | 2011-11-03 | 2012-06-20 | 中国电力科学研究院 | Low-voltage ride-through testing system of wind generating set |
| CN203119375U (en) * | 2013-01-18 | 2013-08-07 | 北京科力恒久电力技术股份有限公司 | A unit high-voltage AC metal-enclosed gas-insulated switch cabinet |
| CN103401173A (en) * | 2013-07-30 | 2013-11-20 | 上海天灵开关厂有限公司 | Common mounting cabinet of gas-insulated breaker |
| CN203850639U (en) * | 2014-03-13 | 2014-09-24 | 北京群菱能源科技有限公司 | A combined switch cabinet of a voltage drop apparatus |
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| CN103944074A (en) | 2014-07-23 |
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Effective date of registration: 20220601 Address after: No. 109, Lushan Road, Rudong Economic Development Zone, Rudong County, Nantong City, Jiangsu Province 226499 Patentee after: Jiangsu qunling Energy Technology Co.,Ltd. Address before: Room 1201, unit 1, building 7, No. 99, Kechuang 14th Street, Beijing Economic and Technological Development Zone, 101111 Patentee before: BEIJING QUNLING ENERGY RESOURCES TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20221227 Address after: No. 109, Lushan Road, Rudong Economic Development Zone, Rudong County, Nantong City, Jiangsu Province 226499 Patentee after: Jiangsu qunling Energy Technology Co.,Ltd. Patentee after: BEIJING QUNLING ENERGY RESOURCES TECHNOLOGY CO.,LTD. Address before: No. 109, Lushan Road, Rudong Economic Development Zone, Rudong County, Nantong City, Jiangsu Province 226499 Patentee before: Jiangsu qunling Energy Technology Co.,Ltd. |
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