CN104635192A - Power frequency resonance booster power supply used for verifying 550kV voltage transformer in GIS (gas insulated switchgear) - Google Patents
Power frequency resonance booster power supply used for verifying 550kV voltage transformer in GIS (gas insulated switchgear) Download PDFInfo
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- CN104635192A CN104635192A CN201410756612.3A CN201410756612A CN104635192A CN 104635192 A CN104635192 A CN 104635192A CN 201410756612 A CN201410756612 A CN 201410756612A CN 104635192 A CN104635192 A CN 104635192A
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Abstract
The invention discloses a power frequency resonance booster power supply used for verifying 550kV voltage transformers in a GIS (gas insulated switchgear). The power frequency resonance booster power supply comprises a voltage regulator T, an exciting transformer B and a multi-combined reactor; the output end of the voltage regulator T is connected to the primary pole of the exciting transformer B, and one end of the secondary pole of the exciting transformer B is grounded while the other end is connected to the input end of the multi-combined reactor; the multi-combined reactor comprises at least one group of adjustable reactor bodies. The power frequency resonance booster power supply has the advantages that the resonance reactor forms the multi-combined reactor by adopting the small fixed reactor bodies and adjustable reactor bodies, so that size and weight of the reactor are reduced, error verifying on the spot is especially satisfied, and error verifying level and efficiency of the voltage transformers in a GIS station is improved.
Description
Technical field
The present invention relates to a kind of industrial frequency resonance booster power for verifying voltage transformer (VT) in 550kV GIS, belonging to mutual inductor on site calibration technology field.
Background technology
In recent years, along with the fast development of electrical network, GIS (GAS INSULATED SWITCHGEAR sulfur hexafluoride fully closed combined electric unit), because of its safety and stability, the advantage such as integrated level is high, floor area is little, is applied in the transformer substation construction of electrical network and power plant more and more widely.The large power station cluster of southwest, because of geographical configuration, most construction is inner at massif, extra long distance GIS structure can only be adopted, what have even also will add GIL pipeline, distributed capacitance is large, GIS builtin voltage mutual inductor is carried out to the booster power capacity of field-checking is large, volume large, boosts very difficult; And use in the power station that like this volume equipment that is large, Heavy Weight is not easy in massif.On the other hand, the clean energy resource of these regional flood tides will deliver to the large region of Southeast of need for electricity amount, need to set up extra-high voltage AC and DC long distance powedr transmission network, the flood tide energy of these long distance delivery of accurate-metering, trade settlement for each side such as each genco, national grid, south electric networks is very crucial, and whether accurate measurement has direct relation with the error of voltage transformer (VT) in the GIS for measuring.Therefore, study a kind of small-sized, lightweight, the supply unit of wide accommodation is of great significance for the field-checking tool of voltage transformer (VT) in different scales GIS.
Summary of the invention
The object of this invention is to provide a kind of industrial frequency resonance booster power for verifying voltage transformer (VT) in 550kV GIS.
The technical scheme realizing the object of the invention is as follows: a kind of industrial frequency resonance booster power for verifying voltage transformer (VT) in 550kV GIS, comprises pressure regulator T, exciting transformer B and combine reactor more; The output terminal of pressure regulator T is connected to the elementary of exciting transformer B, secondary one end ground connection of exciting transformer B, and the other end is connected to the input end of many combination reactors; Described many combination reactors comprise at least one group of REgulatable reactor.
Further, described many combination reactors are made up of REgulatable reactor group L0; Described REgulatable reactor group L0 is connected by the REgulatable reactor of two 200kV1A.
Further, described many combination reactors are formed by after REgulatable reactor group L0 and 1A constant reactance device group L1 parallel connection; Described REgulatable reactor group L0 is connected by the REgulatable reactor of two 200kV1A, and described 1A constant reactance device group L1 is connected by the constant reactance device of 5 80kV1A.
Further, described many combination reactors are formed by after REgulatable reactor group L0 and 2A constant reactance device group L2 parallel connection; Described REgulatable reactor group L0 is connected by the REgulatable reactor of two 200kV1A, and described 2A constant reactance device group L2 is connected by the constant reactance device of 5 80kV2A.
Further, described many combination reactors are formed by after REgulatable reactor group L0,1A constant reactance device group L1 and 2A Reactor banks L2 parallel connection; Described REgulatable reactor group L0 is connected by the REgulatable reactor of two 200kV1A, and described 1A constant reactance device group L1 is connected by the constant reactance device of 5 80kV1A, and described 2A constant reactance device group L2 is connected by the constant reactance device of 5 80kV2A.
Beneficial effect of the present invention is, resonance reactor adopts small-sized constant reactance device and REgulatable reactor to combine to form many groups and reactor, thus reduce the volume and weight of equipment, be particularly suitable for site error verification, improve voltage transformer error calibrating level and efficiency in huge GIS station.
Accompanying drawing explanation
Fig. 1 is the electrical schematic diagram that the present invention verifies voltage transformer (VT) in GIS.
Embodiment
As Fig. 1, a kind of industrial frequency resonance booster power for verifying voltage transformer (VT) in 550kV GIS, comprises pressure regulator T, exciting transformer B and combines reactor more; The output terminal of pressure regulator T is connected to the elementary of exciting transformer B, secondary one end ground connection of exciting transformer B, and the other end is connected to the input end of many combination reactors; Described many combination reactors comprise at least one group of REgulatable reactor.Wherein C is the distributed capacitance of GIS, and PTx is the voltage transformer (VT) in GIS, and PT0 is standard potential transformer.
For voltage transformer (VT) in voltage transformer (VT) in GIS and over distance GIS, the mode of series resonance can be adopted to boost, and the electric capacity of voltage transformer (VT) is relatively little in GIS, test current is generally not more than 1A, so when designing reactor, have selected separate unit voltage and be no more than the REgulatable reactor 6 that 70kV electric current is 1A, series voltage can reach 400kV, and electric current is 1A; For the ease of in-site installation, every three are fixed together, and every platform independent is adjustable, these three REgulatable reactors be fixed together we be referred to as REgulatable reactor group, its rated voltage is 200kV, and inductance value is 500 ~ 5000H.And in extra long distance GIS voltage transformer (VT) according to the length of GIS bus duct, electric capacitance change wider range, test current is generally at more than 1A, below 4A, this time, if REgulatable reactor is designed to 400kV4A, capacity is 1600kVA, voltage transformer test in GIS that electric capacity is not more than 40000PF can be met, but so volume of big current REgulatable reactor own is large, Heavy Weight, uses that middle electric power is large, noise large, onsite moving exists many limitations and inconvenience, also easily damage, and reactor inductance amount range of adjustment is also inadequate.So the comprehensive above electric capacity feature of several voltage transformer (VT) and the size of test current, selection is designed to 1A constant reactance device group and 2A constant reactance device group, with 1A REgulatable reactor group Combination application, the adjustment of range of current from 0.1A ~ 4A can be realized, meet the power requirement of voltage transformer (VT) field-checking in the various situation of 550kV, the power requirement of 330kV, 220kV, 110kV voltage transformer (VT) field-checking can also be taken into account.Wherein 1A constant reactance device group L1 is composed in series by the constant reactance device of 5 80kV1A, and 2A constant reactance device group L2 is composed in series by the reactor of 5 80kV2A, and 1A REgulatable reactor group L0 is composed in series by the REgulatable reactor of two 200KV1A.
For the field-checking of voltage transformer (VT) in 550kV GIS, its concrete array mode is in table 1.For the test product of test current at below 1A, only need 1A REgulatable reactor group; Test current at 1A ~ 2A, by 1A REgulatable reactor group in parallel for 1A constant reactance device group; Test current 2A ~ 3A, by 2A constant reactance device group 1A REgulatable reactor in parallel group; The parallel connection of 1A constant reactance device group, 2A constant reactance device group and 1A REgulatable reactor group at 3A ~ 4A, then uses by test current.This array mode, single reactor volume weight minimizes, and can the most effectively configure different combinations to meet for different test products, farthest meets flexible and changeable usability.
Table 1 many combinations reactor uses combination table
The trial voltage of 110kV voltage transformer (VT) field-checking is about 76.2kV, the trial voltage of 220kV voltage transformer (VT) field-checking is about 146kV, the trial voltage of 330kV voltage transformer (VT) field-checking is about 219kV, and the trial voltage of 550kV voltage transformer (VT) field-checking is about 349kV.Select 80kV as the separate unit reactor operating voltage of constant reactance device group, the single trial voltage that can meet 110kV voltage transformer (VT) of this magnitude of voltage, two tandem energies meet the trial voltage of 220kV voltage transformer (VT), three tandem energies meet the trial voltage of 330kV voltage transformer (VT), and five tandem energies meet the trial voltage of 550kV voltage transformer (VT).And 220kV and following voltage transformer test voltage can be met especially by a 200kV REgulatable reactor group, two can meet 550kV voltage transformer test voltage, and such combination is by the maximized power supply requirement meeting the electric capacity voltage transformer error verification of on-site CVT and GIS.
What the site error along with 550kV voltage transformer (VT) verified generally carries out, under various limitation conditions at the scene, this single small in volume, be applicable to various types of voltage transformer (VT) field-checking booster system and can play flexible portable changeable effect, the verification boosting of voltage transformer (VT) in the GIS being particularly suitable for the wide capacitance swing different scales of voltage levels.
Claims (5)
1. for verifying an industrial frequency resonance booster power for voltage transformer (VT) in 550kV GIS, it is characterized in that, comprising pressure regulator (T), exciting transformer (B) and combining reactor more; The output terminal of pressure regulator (T) is connected to the elementary of exciting transformer (B), secondary one end ground connection of exciting transformer (B), and the other end is connected to the input end of many combination reactors; Described many combination reactors comprise at least one group of REgulatable reactor.
2. industrial frequency resonance booster power as claimed in claim 1, is characterized in that, described many combination reactors are made up of REgulatable reactor group (L0); Described REgulatable reactor group (L0) is connected by the REgulatable reactor of two 200kV1A.
3. industrial frequency resonance booster power as claimed in claim 1, is characterized in that, described many combination reactors are formed by after REgulatable reactor group (L0) and 1A constant reactance device group (L1) parallel connection; Described REgulatable reactor group (L0) is connected by the REgulatable reactor of two 200kV1A, and described 1A constant reactance device group (L1) is connected by the constant reactance device of 5 80kV1A.
4. industrial frequency resonance booster power as claimed in claim 1, is characterized in that, described many combination reactors are formed by after REgulatable reactor group (L0) and 2A constant reactance device group (L2) parallel connection; Described REgulatable reactor group (L0) is connected by the REgulatable reactor of two 200kV1A, and described 2A constant reactance device group (L2) is connected by the constant reactance device of 5 80kV2A.
5. industrial frequency resonance booster power as claimed in claim 1, is characterized in that, described many combination reactors are formed after REgulatable reactor group (L0), 1A constant reactance device group (L1) and 2A Reactor banks (L2) are in parallel; Described REgulatable reactor group (L0) is connected by the REgulatable reactor of two 200kV1A, and described 1A constant reactance device group (L1) is connected by the constant reactance device of 5 80kV1A, and described 2A constant reactance device group (L2) is connected by the constant reactance device of 5 80kV2A.
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| CN201410756612.3A CN104635192A (en) | 2014-12-10 | 2014-12-10 | Power frequency resonance booster power supply used for verifying 550kV voltage transformer in GIS (gas insulated switchgear) |
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| CN201410756612.3A CN104635192A (en) | 2014-12-10 | 2014-12-10 | Power frequency resonance booster power supply used for verifying 550kV voltage transformer in GIS (gas insulated switchgear) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425189A (en) * | 2016-01-15 | 2016-03-23 | 武汉磐电科技有限公司 | Extra-high voltage potential transformer separated checking platform and mounting and checking method thereof |
| CN105609277A (en) * | 2016-02-18 | 2016-05-25 | 武汉磐电科技有限公司 | Multi-tap fixed adjustable reactor for checking 1,000kV extra-high voltage CVT and implementation method |
| CN111929632A (en) * | 2020-10-15 | 2020-11-13 | 武汉磐电科技股份有限公司 | Power frequency calibration power supply and equipment of miniaturized extra-high voltage transformer |
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| CN102928705A (en) * | 2012-10-29 | 2013-02-13 | 河北省电力公司电力科学研究院 | Voltage transformer error test power frequency resonance step-up automatic test method in GIS (geographic information system) |
| CN103338025A (en) * | 2013-06-05 | 2013-10-02 | 国家电网公司 | A power frequency induction adjustable resonance apparatus and a frequency modulation method thereof for determining a power frequency in-series resonant condition |
| CN204422741U (en) * | 2014-12-10 | 2015-06-24 | 国网四川省电力公司电力科学研究院 | For verifying the industrial frequency resonance booster power of voltage transformer (VT) in 550kV GIS |
| CN105591546A (en) * | 2014-10-23 | 2016-05-18 | 黄磊 | Power-frequency boost power supply for field calibration of GIS voltage transformer |
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2014
- 2014-12-10 CN CN201410756612.3A patent/CN104635192A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928705A (en) * | 2012-10-29 | 2013-02-13 | 河北省电力公司电力科学研究院 | Voltage transformer error test power frequency resonance step-up automatic test method in GIS (geographic information system) |
| CN103338025A (en) * | 2013-06-05 | 2013-10-02 | 国家电网公司 | A power frequency induction adjustable resonance apparatus and a frequency modulation method thereof for determining a power frequency in-series resonant condition |
| CN105591546A (en) * | 2014-10-23 | 2016-05-18 | 黄磊 | Power-frequency boost power supply for field calibration of GIS voltage transformer |
| CN204422741U (en) * | 2014-12-10 | 2015-06-24 | 国网四川省电力公司电力科学研究院 | For verifying the industrial frequency resonance booster power of voltage transformer (VT) in 550kV GIS |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425189A (en) * | 2016-01-15 | 2016-03-23 | 武汉磐电科技有限公司 | Extra-high voltage potential transformer separated checking platform and mounting and checking method thereof |
| CN105425189B (en) * | 2016-01-15 | 2018-06-22 | 武汉磐电科技股份有限公司 | Extra-high voltage transformer separate type verifies platform and its installation and checking method |
| CN105609277A (en) * | 2016-02-18 | 2016-05-25 | 武汉磐电科技有限公司 | Multi-tap fixed adjustable reactor for checking 1,000kV extra-high voltage CVT and implementation method |
| CN111929632A (en) * | 2020-10-15 | 2020-11-13 | 武汉磐电科技股份有限公司 | Power frequency calibration power supply and equipment of miniaturized extra-high voltage transformer |
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