CN201926742U - Switching test loop for paralleling reactor of high-voltage AC circuit breaker - Google Patents
Switching test loop for paralleling reactor of high-voltage AC circuit breaker Download PDFInfo
- Publication number
- CN201926742U CN201926742U CN2010206616442U CN201020661644U CN201926742U CN 201926742 U CN201926742 U CN 201926742U CN 2010206616442 U CN2010206616442 U CN 2010206616442U CN 201020661644 U CN201020661644 U CN 201020661644U CN 201926742 U CN201926742 U CN 201926742U
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- voltage
- transformer
- switch
- load
- circuit breaker
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- Expired - Lifetime
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- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The utility model relates to a switching test loop for a paralleling reactor of a high-voltage AC circuit breaker, comprising an electric generator, a transformer, a load resistor, a load reactor, a circuit breaker to be tested and a capacitor, wherein the capacitor, the load resistor and the load reactor are connected to form a parallel oscillation circuit, and the parallel oscillation circuit is connected at the output end of the transformer; and the output end of the electric generator is connected with the input end of the transformer. The test loop achieves simple layout and high equivalence property, and can meet the switching test requirements of the current test mode of the paralleling reactor of the high-voltage AC circuit breaker.
Description
Technical field
The utility model belongs to the circuit-breaker testing technical field, relates to a kind of circuit-breaker testing loop, especially a kind of high-voltage AC breaker folding shunt reactor test loop that is used for.
Background technology
Normal employing parallel reactance comes the restriction system power-frequency voltage to raise and switching overvoltage in ultra-high-tension power transmission line.When network load was heavier, the necessary all or part of cut-out of parallel reactance was to avoid undue consumption systems perception power.When isolating switch cut-off perceptual little electric current, isolating switch fracture and peripheral circuits reciprocation produced high-amplitude high frequency transient voltage usually, and the high frequency transient recovery voltage of generation may cause the damaging effect to reactance and/or switchgear.
Therefore, folding shunt reactor current testing is the important tests project that detects the high-voltage AC breaker that is used for this kind operating mode.
Domestic high capacity testing station does not also carry out this type approval test and detects professional.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, a kind of high-voltage AC breaker folding shunt reactor test loop that is used for is provided, good equivalence when operating isolating switch in actual track, this loop is arranged with it, satisfy four kinds of requirements of cut-offfing mode, the test loop has feasible, reliable, characteristic of simple.
The purpose of this utility model solves by the following technical programs:
This kind is used for high-voltage AC breaker folding shunt reactor test loop, comprises generator, transformer, pull-up resistor, load reactance device, tested isolating switch and electric capacity; Described electric capacity, pull-up resistor and load reactance device are connected to form the parallel oscillation loop, and this parallel oscillation loop is connected on the output terminal of described transformer; The output terminal of described generator connects the input end of transformer.
Be connected with protection switch, combined floodgate switch between above-mentioned generator and the transformer, regulate reactance and operating switch, described protection switch, combined floodgate switch, adjusting reactance and operating switch are connected successively.
The utility model has the advantages that the test loop layout is simple, the equivalence height can satisfy the testing requirements of isolating switch folding shunt reactor current testing mode.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model;
Fig. 2 is a circuit connection diagram of the present utility model.
Embodiment
T in test current parameter and the TRV parameter
3Determine very important relation to be arranged with choosing of load live sense L.Determined after the load inductance L according to the test current parameter, because the requirement of TRV, formed the load-side capacitor C of parallel oscillation with it
LAlso determine thereupon.But find the load-side capacitor C through Theoretical Calculation and software simulation
LBe pF level electric capacity.Electric pressure is very high.The stray capacitance over the ground with testing laboratory loop self circuit is adopted in the proposition of the utility model technological innovation, method as the utilization of the load equivalent electric capacity in the parameter of test loop, this is existed really but insubstantial electric capacity and load high voltage reactor formation LC parallel oscillation, thereby reach transient recovery voltage (TRV) parameter of testing requirements.
The load loss resistance R requires bigger, and withstand voltage level is higher, and through-current capability needs certain guarantee, therefore adopt testing laboratory's resitstance voltage divider, by the method for series-parallel system, reach the requirement of test resistance, thereby satisfy the requirement of amplitude coefficient 1.9 in the TRV test parameters.
Fig. 1 is the straightway testing schematic diagram of folding shunt reactor electric current.U among the figure
sBe supply voltage, L
sBe the equivalent inductance of mains side, C
sBe mains side equivalent capacitance, L
B1, L
B2Be the connecting line inductance, L is a reactor inductance, C
LBe load-side electric capacity, R is a load loss resistance, (to obtain 1.9 amplitude coefficient)
Fig. 2 is a circuit connection diagram of the present utility model.Wherein G is a short-circuit generator, and GB is a protection switch, and MB is an operating switch; MS is the combined floodgate switch, and L1 is the load reactance device, and L2 regulates reactance; T0 is tested isolating switch, and FK is an auxiliary circuit breaker, and T is the short circuit transformer; C is a load capacitance; R is a load loss resistance, and I is current measurement, and U1 is that fracture voltage is measured; U2 is that supply voltage is measured, and U is standby for measuring.
The annexation of the utility model each several part is: capacitor C, pull-up resistor R1 and load reactance device L1 are connected to form the parallel oscillation loop, and this parallel oscillation loop is connected on the output terminal of described transformer T; The output terminal of described generator G connects the input end of transformer T.Be connected with protection switch GB, combined floodgate switch MS between generator G and the transformer T, regulate reactance L2 and operating switch MB, protection switch GB, combined floodgate switch MS, adjusting reactance L2 and operating switch MB connect successively.Load reactance device L1 is used to regulate test current, and load reactance device L1 and capacitor C form parallel oscillation simultaneously, are used for satisfying TRV test parameters t
3Requirement.Pull-up resistor R1 is used for satisfying the requirement of TRV test parameters amplitude coefficient 1.9.
In the such scheme, it is bigger that pull-up resistor R1 value requires, and withstand voltage level is higher, and through-current capability needs certain guarantee, therefore the use of innovation the high-voltage arm resistance of resistance divider, by series-parallel system, well reached the requirement of test resistance value.
The load shunt capacitance has crucial effects for the whole test loop.The utility model is provided by classic method (capacitance needs the entity capacitance device to provide), the proposition of initiating in the testing laboratory at home: utilize the test method of circuit self stray capacitance as the load shunt capacitance, this electric capacity exists really but does not have the material body as seen, thereby and utilizes circuit to arrange the purpose that reaches the change stray capacitance in the three-dimensional changing-over of testing laboratory.The successful implementation of this mode, effect is obvious.
Process of the test of the present utility model is: test product carries out " CO " operation, and auxiliary switch FK carries out " O " operation before the test product.FK closed a floodgate before beginning is prepared in test, carried out separating brake behind the test product separating brake in a period of time, and trial voltage is excised.Owing to have for separating brake dropout pulse in the test standard electric degree requirement spaced apart arranged,, test product is controlled voltage be increased to the highest control voltage 242V for stable control test product closes a floodgate and sub-switching operation.
Claims (2)
1. one kind is used for high-voltage AC breaker folding shunt reactor test loop, it is characterized in that: comprise generator (G), transformer (T), pull-up resistor (R1), load reactance device (L1), tested isolating switch (T0) and electric capacity (C); Described electric capacity (C), pull-up resistor (R1) and load reactance device (L1) are connected to form the parallel oscillation loop, and this parallel oscillation loop is connected on the output terminal of described transformer (T); The output terminal of described generator (G) connects the input end of transformer (T).
2. the high-voltage AC breaker folding shunt reactor test loop that is used for according to claim 1; it is characterized in that: be connected with protection switch (GB), combined floodgate switch (MS) between described generator (G) and the transformer (T), regulate reactance (L2) and operating switch (MB), described protection switch (GB), combined floodgate switch (MS), adjusting reactance (L2) and operating switch (MB) are connected successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206616442U CN201926742U (en) | 2010-12-15 | 2010-12-15 | Switching test loop for paralleling reactor of high-voltage AC circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206616442U CN201926742U (en) | 2010-12-15 | 2010-12-15 | Switching test loop for paralleling reactor of high-voltage AC circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926742U true CN201926742U (en) | 2011-08-10 |
Family
ID=44430585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206616442U Expired - Lifetime CN201926742U (en) | 2010-12-15 | 2010-12-15 | Switching test loop for paralleling reactor of high-voltage AC circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201926742U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443431A (en) * | 2016-08-31 | 2017-02-22 | 中国西电电气股份有限公司 | Test loop and method for super/extra-high voltage circuit breaker opening and closing paralleling reactor load |
| CN106526470A (en) * | 2016-10-27 | 2017-03-22 | 中国西电电气股份有限公司 | Test loop used in high-voltage AC circuit breaker test means T10 and T30 and configuration method thereof |
| CN113466687A (en) * | 2021-06-29 | 2021-10-01 | 西安西电电力电容器有限责任公司 | Device and method for opening and closing capacitive load test of medium-voltage alternating-current circuit breaker |
-
2010
- 2010-12-15 CN CN2010206616442U patent/CN201926742U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443431A (en) * | 2016-08-31 | 2017-02-22 | 中国西电电气股份有限公司 | Test loop and method for super/extra-high voltage circuit breaker opening and closing paralleling reactor load |
| CN106526470A (en) * | 2016-10-27 | 2017-03-22 | 中国西电电气股份有限公司 | Test loop used in high-voltage AC circuit breaker test means T10 and T30 and configuration method thereof |
| CN106526470B (en) * | 2016-10-27 | 2019-05-03 | 中国西电电气股份有限公司 | A kind of test loop and its configuration method in high-voltage AC breaker test method T10, T30 |
| CN113466687A (en) * | 2021-06-29 | 2021-10-01 | 西安西电电力电容器有限责任公司 | Device and method for opening and closing capacitive load test of medium-voltage alternating-current circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |
|
| CX01 | Expiry of patent term |