CN105974282A - GIS voltage holding test method - Google Patents
GIS voltage holding test method Download PDFInfo
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- CN105974282A CN105974282A CN201610303337.9A CN201610303337A CN105974282A CN 105974282 A CN105974282 A CN 105974282A CN 201610303337 A CN201610303337 A CN 201610303337A CN 105974282 A CN105974282 A CN 105974282A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
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- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a GIS voltage holding test method. Firstly, an isolation switch between a to-be-tested interval and a prior operation GIS equipment is disconnected and a reference voltage of a double bus is obtained. The reference voltage is amplified through a series resonant circuit composed of a phase shifting transformer, a voltage adjuster, a testing transformer and an electric reactor and is output to the to-be-tested interval. At the same time, the testing voltage of the to-be-tested interval is obtained. Then the reference voltage and the testing voltage are compared and the tap position of the phase shifting transformer is adjusted according to the phase difference of the reference voltage and the testing voltage, so that the phase difference of the testing voltage and the reference voltage of the to-be-tested interval can become the minimum. According to the invention, phase-shifting transformer is utilized for performing adjustment on operating voltage and testing voltage phases, so that the phase difference of the testing voltage and the operating voltage becomes the minimum and therefore that the disconnection port voltage is the minimum is ensured. Voltage holding tests on the extension or maintenance interval are realized in a condition that power interruption of an adjacent part is saved.
Description
Technical field
The present invention relates to technical field of electric power, particularly a kind of GIS pressure test method.
Background technology
Cubicle Gas-Insulated Switchgear (hereinafter referred to as GIS) is applied more and more extensive in power system, but GIS
After interval enlarging and maintenance (particularly double bus scheme GIS), it is required in the case of original operation brownout carry out
Pressure test.GIS expansion spacing or Disintegration overhaul interval are only disconnected by disconnecting switch with adjacent operation part, if running part
Do not have a power failure, then keep apart during ac voltage withstanding at shutoff mouth it may happen that superpose reverse with working voltage of test voltage causes isolation
Fracture punctures and then jeopardizes the situation of operation equipment, and therefore the standard regulation GIS such as DL/T 555, DL/T 617, DL/T 618 is resistance to
During pressure test, neighbouring device answers power-off ground connection, is otherwise considered as taking to arrange owing to puncturing suddenly the damage causing original part
Execute.
And for some important load-center substations and the GIS transformer station with important loads such as traction station of electrical railroad, special
Being not double-bus GIS, power supply reliability is required the highest by these transformer stations, is difficult in the case of full station has a power failure carry out pressure examination
Test.Accordingly, it would be desirable to a kind of pressure test system realizes carrying out pressure test in the case of full station does not has a power failure.
Summary of the invention
The problem to be solved in the present invention is by arranging the situation that a kind of pressure test system realizes not having a power failure at full station
Under carry out pressure test.
It is an object of the invention to be achieved through the following technical solutions:
A kind of GIS pressure test method that the present invention provides, comprises the following steps:
S100: the disconnecting switch between interval to be measured and former operation GIS device is disconnected,
In the GIS device transformer station of acquisition double bus scheme on any one bus on the low pressure winding of voltage transformer
Voltage, and by described voltage as the reference voltage；
Obtain the test voltage on described interval to be measured, and utilize potentiometer that described test voltage is carried out sampling to obtain instead
Feedthrough voltage；
S200: relatively described reference voltage and feedback voltage, regulates phase-shifting transformer according to phase contrast between the two
Gear so that the voltage-phase of phase-shifting transformer output is minimum with reference voltage phase contrast；
S300: output voltage is amplified the series resonant circuit output through pressure regulator, testing transformer and reactor composition
On described interval to be tested.
Further, further comprising the steps of:
Judge pressure during reference voltage and test voltage phase deviation whether exceed default outlier threshold, if
It is then to be cut off the electricity supply output by control protective unit.
Further, the voltage-phase of described phase-shifting transformer in the range of 0-360 ° with angle, θ step-by-step adjustment, wherein, θ=
60 °/2m, m >=1.
Further, further comprising the steps of:
S201: reference voltage and feedback voltage are detected by described control protective unit in real time, obtain between the two
Phase difference θ, and shown by display.
Further, further comprising the steps of:
S202: calculate Δ θ/θ ratio；And carry out round, it is set to K；
S203: the step-by-step adjustment phase-shifting transformer conversion position of the switch is set to K time；
S204: detection busbar voltage and test voltage phase difference θ in real time；
S205: judge the difference of Δ θ Yu θ, S206: if Δ θ is more than θ, then the locking of pressure regulator boost function is closed and is risen
Press operation；S207: if < during θ, then pressure regulator boost function is open carries out boost operations to Δ θ.
Further, described control protective unit is provided with fracture voltage protection operating unit, busbar voltage protection operation list
Unit and test voltage protect operating unit；
A) described fracture voltage protection operating unit is carried out in such a way:
When test voltage exceedes unit protection definite value with reference voltage phase deviation, then starting protection operation；
When test voltage is more thanTime, phase difference θ > θ time, starting protection operational motion；
When fracture voltage value exceedes the protection definite value that device sets, then starting protection operation；
B) described busbar voltage protection operating unit is carried out in such a way:
When monitoring bus frequency beyond 50 ± 0.5Hz scope or sudden change in the range of 50 ± 0.5Hz, starting protection is grasped
Make；
When busbar voltage fluctuation scope exceed per second ± 10% scope time, starting protection operate.
C) described test voltage protection operating unit is carried out in such a way:
When test voltage value exceedes the protection definite value that device sets, starting protection operates；
When test voltage fluctuation range exceed per second ± 10% scope time, starting protection operate；
When test voltage generation flashover, starting protection operates.
Owing to have employed technique scheme, present invention have the advantage that:
The GIS pressure test method that the present invention provides, utilizes phase-shifting transformer to enter working voltage and test voltage phase place
Row real time dynamic tracing regulates, and makes test voltage minimum, so that it is guaranteed that fracture voltage is minimum with the phase contrast of working voltage, it is achieved
Under adjacent part no cut-off condition, enlarging or maintenance interval are carried out pressure test method.
Other advantages, target and the feature of the present invention will be illustrated to a certain extent in the following description, and
And to a certain extent, will be apparent to those skilled in the art based on to investigating hereafter, or can
To be instructed from the practice of the present invention.The target of the present invention and other advantages can be realized by description below and
Obtain.
Accompanying drawing explanation
The accompanying drawing of the present invention is described as follows.
Fig. 1 is the connection diagram structural representation of a kind of GIS pressure-resistant test system.
Fig. 2 is a kind of GIS voltage-withstand test method flow schematic diagram.
Fig. 3 is that phase-shifting transformer regulates schematic flow sheet.
Fig. 4 is GIS pressure test protection act flow chart.
In figure: 1 is phase-shifting transformer；2 is pressure regulator；3 is testing transformer；4 is damping resistance；5 for adjusting sense reactor；
6 is potentiometer；7 is control protective unit.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
As it can be seen, a kind of GIS pressure test method that the present embodiment provides, comprise the following steps:
S100: the disconnecting switch between interval to be measured and former operation GIS device is disconnected,
In the GIS device transformer station of acquisition double bus scheme on any one bus on the low pressure winding of voltage transformer
Voltage, and by described voltage as the reference voltage；
Obtain the test voltage on described interval to be measured, and utilize potentiometer that described test voltage is carried out sampling to obtain instead
Feedthrough voltage；
S200: relatively described reference voltage and feedback voltage, regulates phase-shifting transformer according to phase contrast between the two
Gear so that the voltage-phase of phase-shifting transformer output is minimum with reference voltage phase contrast；
S300: output voltage is amplified the series resonant circuit output through pressure regulator, testing transformer and reactor composition
On described interval to be tested.
Further comprising the steps of:
Judge pressure during reference voltage and test voltage phase deviation whether exceed default outlier threshold, if
It is then to be cut off the electricity supply output by control protective unit.
The voltage-phase of described phase-shifting transformer in the range of 0-360 ° with angle, θ step-by-step adjustment, wherein, θ=60 °/2m,
m≥1。
Further comprising the steps of:
S201: reference voltage and feedback voltage are detected by described control protective unit in real time, obtain between the two
Phase difference θ, and shown by display.
Further comprising the steps of:
S202: calculate Δ θ/θ ratio；And carry out round, it is set to K；
S203: the step-by-step adjustment phase-shifting transformer conversion position of the switch is set to K time；
S204: detection busbar voltage and test voltage phase difference θ in real time；
S205: judge the difference of Δ θ Yu θ, S206: if Δ θ is more than θ, then the locking of pressure regulator boost function is closed and is risen
Press operation；S207: if < during θ, then pressure regulator boost function is open carries out boost operations to Δ θ.
Described control protective unit is provided with fracture voltage protection operating unit, busbar voltage protection operating unit and test
Voltage protection operating unit；
A) described fracture voltage protection operating unit is carried out in such a way:
When test voltage exceedes unit protection definite value with reference voltage phase deviation, then starting protection operation；
When test voltage is more thanTime, phase difference θ > θ time, starting protection operational motion；
When fracture voltage value exceedes the protection definite value that device sets, then starting protection operation；
B) described busbar voltage protection operating unit is carried out in such a way:
When being not detected by bus reference voltage signal in one cycle of device, starting protection operates；
When monitoring bus frequency beyond 50 ± 0.5Hz scope or sudden change in the range of 50 ± 0.5Hz, starting protection is grasped
Make；
When busbar voltage fluctuation scope exceed per second ± 10% scope time, starting protection operate.
C) described test voltage protection operating unit is carried out in such a way:
When test voltage value exceedes the protection definite value that device sets, starting protection operates；
When test voltage fluctuation range exceed per second ± 10% scope time, starting protection operate；
When test voltage generation flashover, starting protection operates.
The present embodiment additionally provides a kind of GIS Withstand test device, including phase-shifting transformer, pressure regulator, testing transformer,
Damping resistance, tune sense reactor, potentiometer and control protective unit；
Described control protective unit be used for receiving test voltage and reference voltage and respectively with phase-shifting transformer and pressure regulator
Connect；Described pressure regulator is connected with phase-shifting transformer；Described pressure regulator is connected with testing transformer；Described potentiometer becomes with test
Depressor connects；Described potentiometer is connected with control protective unit；Described potentiometer and interval to be tested are also connected.
Described potentiometer is connected with testing transformer by damping resistance and the tune sense reactor of concatenation.Described reference voltage
Obtained by the voltage transformer being connected with bus.Described control protective unit is provided with fracture voltage protection operating unit, mother
Line voltage protection operating unit and test voltage protection operating unit；
A) described fracture voltage protection operating unit, for reaching to preset threshold in test voltage and reference voltage phase deviation
Fracture voltage protection act is realized during value；
B) described busbar voltage protection operating unit, protects for realizing busbar voltage when busbar voltage reaches predetermined threshold value
Protect action；
C) described test voltage protection operation, dynamic for realizing test voltage protection when test voltage reaches predetermined threshold value
Make.
Embodiment 2
The gas-insulated metal enclosed switchgear GIS voltage-withstand test method that the present embodiment provides, is applied to double bus scheme
GIS device transformer station, wherein: the disconnecting switch between interval to be measured and former operation GIS device disconnects, and comprises the following steps:
Obtain the low pressure winding of voltage transformer on any one bus in the GIS device transformer station of described double bus scheme
On voltage, and by this voltage as the reference voltage；
Obtain the test voltage on described interval to be measured, and utilize potentiometer that described test voltage is carried out sampling to obtain instead
Feedthrough voltage；
Relatively described reference voltage and feedback voltage, regulate the gear of phase-shifting transformer according to phase contrast between the two,
The voltage-phase that phase-shifting transformer is exported is minimum with reference voltage phase contrast, and amplifies output voltage through pressure regulator, examination
The series resonant circuit testing transformator and reactor composition exports on described interval to be tested.If reference occurs during pressure
During the abnormal conditions such as voltage, test voltage phase deviation are excessive, control protective unit action, output of cutting off the electricity supply.
Phase-shifting transformer can realize voltage-phase in the range of 0 360 ° with angle, θ step-by-step adjustment, (θ=60 °/2m its
Middle m >=1).
Reference voltage and feedback voltage are detected by described control protective unit in real time, obtain phase contrast between the two
Δ θ, and shown by display.
The calculating that rounds up Δ θ/θ ratio rounds, and is set to K, then step-by-step adjustment phase-shifting transformer converts switch position
Put K time, until Δ θ < θ.When Δ θ is more than θ, pressure regulator boost function locking, it is impossible to boosting；When Δ θ < during θ, pressure regulator
Boost function is open, can boost.
Described control protective unit possesses fracture voltage, busbar voltage and test voltage defencive function.
A) fracture voltage defencive function: when test voltage is excessive with reference voltage phase deviation, exceed unit protection definite value
Time, defencive function starts (when test voltage is less thanTime, do not monitor phase contrast；When test voltage is more thanTime,
Protection act during phase difference θ<being failure to actuate during θ, phase difference θ>θ)；When fracture voltage value exceedes the protection definite value that device sets
Time, defencive function starts；
B) busbar voltage defencive function:
When being not detected by bus reference voltage signal in one cycle of device, it is believed that bus signal deletion, defencive function opens
Dynamic；50 ± 0.5Hz scope is exceeded when monitoring bus frequency, or in the range of 50 ± 0.5Hz during sudden change, it is believed that bus frequency is different
Often, defencive function starts；When busbar voltage fluctuation scope exceed per second ± 10% scope time, it is believed that busbar voltage is abnormal, protection
Function on.
C) test voltage defencive function:
When test voltage value exceedes the protection definite value that device sets, defencive function starts；When test voltage fluctuation range
Exceed per second ± 10% scope time, it is believed that test voltage is abnormal, and defencive function starts；When test voltage generation flashover, protection
Function on.
Embodiment 3:
The schematic flow sheet of a kind of GIS voltage-withstand test method that Fig. 2 provides for the present embodiment.
The present embodiment provides this GIS voltage-withstand test method, when test, wherein: interval to be measured and former operation GIS device it
Between disconnecting switch disconnect.
As it is shown on figure 3, the method includes below scheme:
S100: obtain bus reference voltage and test voltage.
Each bus is provided with voltage transformer, and voltage transformer has at least one low pressure winding, its
In: high pressure winding one end of voltage transformer is connected with bus, other end ground connection.By the low pressure winding of voltage transformer,
Just can obtain the voltage on bus, by this voltage as the reference voltage, in order to test voltage is adjusted.
Obtain the test voltage on described interval to be measured, and utilize potentiometer that described test voltage is carried out sampling to obtain instead
Feedthrough voltage.
S200: compare busbar voltage and test voltage phase contrast, turns according to the output of phase contrast output control phase-shifting transformer
Change switch-mode regulation, make both phase contrasts minimum.
S300: the series resonant circuit that output voltage forms through pressure regulator, testing transformer and reactor is exported
On interval to be tested.
In the present embodiment, as it is shown on figure 3, step S200 specifically includes:
S201: busbar voltage compared with test voltage, obtains phase difference θ.
S202: Δ θ/θ ratio is carried out round calculating, draws result of calculation K.
S203: control phase-shifting transformer switch positions stepping K time.
S204: detection busbar voltage and test voltage phase difference θ in real time.
S205: judge that whether phase difference θ is less than phase-shifting transformer stepping phase theta.
S206: when phase contrast is more than stepping phase place, pressure regulator boost function locking, it is impossible to boosting.
S207: phase-shifting transformer is adjusted in place, pressure regulator boost function is open, exports satisfactory test voltage
Embodiment 4:
Fig. 4 controls protection flow chart for a kind of GIS pressure test that the present embodiment provides.In Fig. 4, GIS pressure test control
System protection flow process includes:
Obtain reference voltage and test voltage.
Calculate test voltage and the magnitude of voltage of reference voltage, frequency values and phase contrast.
Obtain the rated voltage of equipment under test, default protection definite value.
Judge fracture voltage protection, busbar voltage protection, whether at least one meets protection act bar in test voltage protection
Part.
When judged result is no, carry out step S500；When judged result is for being, carry out step S600.
Being unsatisfactory for protection act condition, power supply normally works.
Signal to signaling to pressure regulator, control pressure regulator on and off switch, deenergization.
Embodiment 5
As it is shown in figure 1, the connection diagram structural representation of GIS pressure-resistant test system that Fig. 1 provides for the present embodiment.Real
Under adjacent part no cut-off condition, enlarging or maintenance interval are carried out pressure now.
The present embodiment provide GIS Withstand test device include phase-shifting transformer, pressure regulator, testing transformer, damping resistance,
Adjust sense reactor, potentiometer and control protective unit；
Bus selected by this system can be any one in two buses, and PT is that the voltage being arranged on bus is mutual
Sensor, high pressure winding one end of PT is connected with bus, other end ground connection, and PT has at least one low pressure winding, and Cx is
Interval to be tested, and when test, the earthed switch in interval Cx to be tested is all off, and will keep apart except bus bar side
Outside the Pass other disconnecting switch all close.
Reference voltage input terminal on control protective unit is connected with a low pressure winding of PT, for obtaining the one of PT
Voltage on individual low pressure winding, and by the voltage of acquisition as the reference voltage；The test voltage input of control protective unit with
The test lead of potentiometer 6 is connected, and receives a feedback voltage.Phase shifting control end on control protective unit and phase-shifting transformer
Being connected, the control protection port on control protective unit is connected with pressure regulator.
The power input of phase-shifting transformer 1 connects three-phase electrical source of power, and outfan is connected with the input of pressure regulator 2,
The outfan of pressure regulator 2 and testing transformer 3 input, phase-shifting transformer 1 acts on according to reference voltage and test voltage
Phase contrast regulates output voltage phase place so that output voltage phase place and busbar voltage are maintained in less scope；Pressure regulator 2
Effect be realize voltage buck control.
Testing transformer 3, damping resistance 4 and adjust sense reactor 5 form series resonant equipment, its outfan and to be tested between
Outlet casing tube every Cx is connected, and the equivalent capacity of series resonant equipment and interval Cx to be measured forms the condition of series resonance, makes
Obtain this series resonant equipment and output voltage can be carried out transformation, on interval Cx to be tested, export high test voltage.
The high-pressure side of potentiometer 6 and the outlet casing tube of interval Cx to be tested are connected, earth terminal ground connection, and potentiometer 6
Test lead be connected with the test voltage input of control protective unit 7, the effect of potentiometer 6 is to treat on test interval Cx
Test voltage sample, and will sampling after voltage be input to control protective unit 7 as feedback voltage.
Finally illustrating, above example is only in order to illustrate technical scheme and unrestricted, although with reference to relatively
The present invention has been described in detail by good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, and without deviating from objective and the scope of the technical program, it all should be contained in the present invention
Right in the middle of.
Claims (6)
1. a GIS pressure test method, it is characterised in that: comprise the following steps:
S100: the disconnecting switch between interval to be measured and former operation GIS device is disconnected,
Electricity on the low pressure winding of voltage transformer on any one bus in the GIS device transformer station of acquisition double bus scheme
Pressure, and by described voltage as the reference voltage；
Obtain the test voltage on described interval to be measured, and utilize potentiometer that described test voltage carries out sampling to obtain feedback electricity
Pressure；
S200: relatively described reference voltage and feedback voltage, regulates the gear of phase-shifting transformer according to phase contrast between the two,
The voltage-phase that phase-shifting transformer is exported is minimum with reference voltage phase contrast；
S300: output voltage is amplified the series resonant circuit through pressure regulator, testing transformer and reactor composition and exports institute
State on interval to be tested.
GIS pressure test method the most according to claim 1, it is characterised in that further comprising the steps of:
Judge pressure during reference voltage and test voltage phase deviation whether exceed default outlier threshold, if it is,
Cut off the electricity supply output by control protective unit.
GIS pressure test method the most according to claim 1, it is characterised in that the voltage-phase of described phase-shifting transformer
With angle, θ step-by-step adjustment in the range of 0-360 °, wherein, θ=60 °/2m, m >=1, m is integer.
GIS pressure test method the most according to claim 2, it is characterised in that further comprising the steps of:
S201: reference voltage and feedback voltage are detected by described control protective unit in real time, obtains phase place between the two
Difference Δ θ, and shown by display.
GIS pressure test method the most according to claim 1, it is characterised in that further comprising the steps of:
S202: calculate Δ θ/θ ratio；And carry out round, it is set to K；
S203: step-by-step adjustment phase-shifting transformer is converted position of the switch stepping K time；
S204: detection busbar voltage and test voltage phase difference θ in real time；
S205: judge the difference of Δ θ Yu θ, S206: if Δ θ is more than θ, then pressure regulator boost function locking, close boosting behaviour
Make；S207: if < during θ, then pressure regulator boost function is open carries out boost operations to Δ θ.
GIS pressure test method the most according to claim 2, it is characterised in that described control protective unit is provided with disconnected
Mouth voltage protection operating unit, busbar voltage protection operating unit and test voltage protection operating unit；
A) described fracture voltage protection operating unit is carried out in such a way:
When test voltage exceedes unit protection definite value with reference voltage phase deviation, then starting protection operation；
When test voltage is more thanTime, phase difference θ > θ time, starting protection operational motion；
When fracture voltage value exceedes the protection definite value that device sets, then starting protection operation；
B) described busbar voltage protection operating unit is carried out in such a way:
When monitoring bus frequency beyond 50 ± 0.5Hz scope or sudden change in the range of 50 ± 0.5Hz, starting protection operates；
When busbar voltage fluctuation scope exceed per second ± 10% scope time, starting protection operate；
C) described test voltage protection operating unit is carried out in such a way:
When test voltage value exceedes the protection definite value that device sets, starting protection operates；
When test voltage fluctuation range exceed per second ± 10% scope time, starting protection operate；
When test voltage generation flashover, starting protection operates.
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| CN201610303337.9A CN105974282A (en) | 2016-05-09 | 2016-05-09 | GIS voltage holding test method |
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| CN201610303337.9A CN105974282A (en) | 2016-05-09 | 2016-05-09 | GIS voltage holding test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932623A (en) * | 2019-03-25 | 2019-06-25 | 重庆大学 | Test method is mutually exchanged with frequently same with the GIS of phase-shifting transformer based on phase matched combination |
| CN114034892A (en) * | 2021-11-17 | 2022-02-11 | 国网重庆市电力公司电力科学研究院 | Dry-type reactor running state detection equipment based on electric power inspection robot |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202305782U (en) * | 2011-05-25 | 2012-07-04 | 湖南省电力公司科学研究院 | Intelligent transformer station high voltage line power factor angle on-site verification apparatus |
| CN102590717A (en) * | 2012-02-14 | 2012-07-18 | 重庆市电力公司电力科学研究院 | Withstand voltage testing method for geographic information system (GIS) |
| CN104111412A (en) * | 2014-06-30 | 2014-10-22 | 国家电网公司 | Protection connection structure for preventing components in variable frequency power cabinet from flashover impact of tested object |
| CN104242255A (en) * | 2014-10-11 | 2014-12-24 | 国网重庆市电力公司电力科学研究院 | GIS (gas insulated switchgear) same-frequency same-phase alternating-current voltage withstand test control protection method and system |
| CN204129166U (en) * | 2014-09-18 | 2015-01-28 | 云南电网公司电力科学研究院 | One can phase shift alternating-current voltage resistance test device |
-
2016
- 2016-05-09 CN CN201610303337.9A patent/CN105974282A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202305782U (en) * | 2011-05-25 | 2012-07-04 | 湖南省电力公司科学研究院 | Intelligent transformer station high voltage line power factor angle on-site verification apparatus |
| CN102590717A (en) * | 2012-02-14 | 2012-07-18 | 重庆市电力公司电力科学研究院 | Withstand voltage testing method for geographic information system (GIS) |
| CN104111412A (en) * | 2014-06-30 | 2014-10-22 | 国家电网公司 | Protection connection structure for preventing components in variable frequency power cabinet from flashover impact of tested object |
| CN204129166U (en) * | 2014-09-18 | 2015-01-28 | 云南电网公司电力科学研究院 | One can phase shift alternating-current voltage resistance test device |
| CN104242255A (en) * | 2014-10-11 | 2014-12-24 | 国网重庆市电力公司电力科学研究院 | GIS (gas insulated switchgear) same-frequency same-phase alternating-current voltage withstand test control protection method and system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932623A (en) * | 2019-03-25 | 2019-06-25 | 重庆大学 | Test method is mutually exchanged with frequently same with the GIS of phase-shifting transformer based on phase matched combination |
| CN109932623B (en) * | 2019-03-25 | 2021-06-08 | 重庆大学 | GIS same-frequency and same-phase test method based on phase matching combination and phase-shifting transformer |
| CN114034892A (en) * | 2021-11-17 | 2022-02-11 | 国网重庆市电力公司电力科学研究院 | Dry-type reactor running state detection equipment based on electric power inspection robot |
| CN114034892B (en) * | 2021-11-17 | 2023-06-02 | 国网重庆市电力公司电力科学研究院 | Dry-type reactor running state detection equipment based on electric power inspection robot |
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Application publication date: 20160928 |