CN108828418A - High pressure ferromagnetic resonance analogue test platform - Google Patents
High pressure ferromagnetic resonance analogue test platform Download PDFInfo
- Publication number
- CN108828418A CN108828418A CN201810783658.2A CN201810783658A CN108828418A CN 108828418 A CN108828418 A CN 108828418A CN 201810783658 A CN201810783658 A CN 201810783658A CN 108828418 A CN108828418 A CN 108828418A
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- bus
- transformer
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- test platform
- high pressure
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 230000005350 ferromagnetic resonance Effects 0.000 title claims abstract description 28
- 239000003990 capacitor Substances 0.000 claims abstract description 35
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 22
- 229960001296 zinc oxide Drugs 0.000 claims description 11
- 239000011787 zinc oxide Substances 0.000 claims description 11
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 5
- 238000011160 research Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- 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
- G01R31/1263—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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Abstract
The invention discloses a kind of high pressure ferromagnetic resonance analogue test platforms, including 38.5KV ac bus, step-up transformer P, 0.4KV AC power source, voltage transformer pt 1, earthing switch KM1 and 3-5 group capacitor, the high-pressure side of step-up transformer P is connect with 38.5KV ac bus, and the low-pressure side of step-up transformer P is connect with the 0.4KV AC power source；Voltage transformer pt 1 is connect by corresponding switch G2 with 38.5KV ac bus, and 1 other end of voltage transformer pt is grounded after connecting with current transformer LH1；Each group capacitor passes through corresponding switch respectively and connect with 38.5KV ac bus；The one end earthing switch KM1 is connect with any bus of 38.5KV ac bus, the other end ground connection of earthing switch KM1.The present invention facilitates research resonance to generate the relationship between voltage transformer design parameter by the generation of the combination collocation of multiple capacitors and voltage transformer, the triggering simulation resonance of earthing switch；Meanwhile the combination of multiple capacitors facilitates to form different resonance, completes multiple analog.
Description
Technical field
The invention belongs to electric system to test field, and in particular to a kind of high pressure ferromagnetic resonance analogue test platform.
Background technique
Both comprising inductance elements such as transformer, voltage transformers in electric system, also comprising the capacitors such as compensation capacitor member
Part disappears if these inductance and capacity cell parameter match in a certain range in switch operation or generation singlephase earth fault
Except when, because external drive generate ferromagnetic resonance.Ferromagnetic resonance problem is to safe and stable operation bring grave danger of power grid,
Caused power department and the very big attention of researcher.Between the every design parameter and ferromagnetic resonance of voltage transformer
The influence etc. caused by the electrical equipment of access power distribution network of relationship and ferro-resonance over-voltage is that care is compared in this field
Problem is now badly in need of an analogue test platform and facilitates progress test relevant to ferromagnetic resonance and test.
Summary of the invention
The technical problem to be solved by the present invention is to overcome defect described above, it is ferromagnetic humorous to provide a kind of 10-35kV high pressure
Shake analogue test platform, for generation and system direct-to-ground capacitance, the electromagnetic potential transformer excitation property etc. for studying ferromagnetic resonance
The relationship of every design parameter facilitates influence of the research resonance to the electrical equipment of access power distribution network.
To solve the problems, such as techniques described above, the present invention provides a kind of high pressure ferromagnetic resonance analogue test platforms, including
38.5KV ac bus, step-up transformer P, 0.4KV AC power source, voltage transformer pt 1, earthing switch KM1 and 3-5 group electricity
Container；
The high-pressure side of the step-up transformer P is connect with the 38.5KV ac bus, the low-pressure side of step-up transformer P with it is described
The connection of 0.4KV AC power source；
The voltage transformer pt 1 is connect by corresponding switch G2 with the 38.5KV ac bus, and voltage transformer pt 1 is another
One end is grounded after connecting with current transformer LH1；
The capacitor passes through corresponding switch respectively and connect with the 38.5KV ac bus；
The one end the earthing switch KM1 is connect with any bus of the 38.5KV ac bus, the other end of earthing switch KM1
Ground connection.
Further, current transformer LH1 of the present invention is grounded again after connecting with nonlinear resistance R1, the non-linear electricity
It is parallel with switch KM2 on resistance R1, one is also parallel on nonlinear resistance R1 and is used for that detect the voltage transformer pt 1 electric over the ground
The voltage transformer pt 2 of pressure.
Further, capacitor group of the present invention is three groups, and three group capacitors are C1, C2 and C3, described capacitor C1, C2
Capacity ratio with C3 is 1:2:4；The capacitance of described capacitor C1, C2 and C3 are 0.01~0.05 μ F.
Further, earthing switch KM1 of the present invention is grounded after connecting with current transformer LH3.
Further, voltage transformer pt 1 of the present invention with to being provided with corresponding fuse RD between inductive switch G2.
Further, Zinc-Oxide Arrester MOA is connected on 38.5KV ac bus of the present invention, the zinc oxide is lightning-arrest
Device MOA includes the nonlinear resistance R2 connecting respectively with each bus, the nonlinear resistance R2 other end ground connection.
Further, current transformer LH2 is connected between capacitor of the present invention and the 38.5KV ac bus.
Preferably, analogue test platform of the present invention further includes the interface of a test product, by switch G6 with it is described
38.5KV ac bus connects.
LH1 of the present invention is used for detecting the current waveform for flowing through voltage transformer pt 1 when forming ferromagnetic resonance, LH3
The current waveform of fault point is flowed through when earthing switch KM1 is closed the ground fault to be formed in detection.
Voltage transformer pt 1 is grounded again after connecting a nonlinear resistance R1, while one in parallel on nonlinear resistance R1
Voltage transformer pt 2 is, it can be achieved that monitoring to 1 tail end voltage-to-ground of voltage transformer pt.
The overvoltage inside electric system can be absorbed in the setting of Zinc-Oxide Arrester, avoids overvoltage to system insulation
Damage.The interface of a connection equipment can also be reserved on platform, for example connects station local coordinate frame to be measured, facilitated and carried out to be measured set
The standby experiment when ferromagnetic resonance occurs.
Beneficial effects of the present invention：The present invention passes through the combination collocation of multiple capacitors and voltage transformer, and by connecing
The generation of the triggering simulation resonance of ground switch, facilitates research resonance to generate the pass between voltage transformer items design parameter
System；Meanwhile the combination of multiple capacitors facilitates to form different resonance, completes multiple analog.
Detailed description of the invention
Fig. 1 is principle of the invention figure.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and examples.
High pressure ferromagnetic resonance analogue test platform of the present invention, including 38.5KV ac bus, step-up transformer P,
0.4KV AC power source, voltage transformer pt 1, earthing switch KM1 and 3-5 group capacitor；The high pressure of the step-up transformer P
Side is connect with the 38.5KV ac bus, and the low-pressure side of step-up transformer P is connect with the 0.4KV AC power source；The electricity
Pressure mutual inductor PT1 is connect by corresponding switch G2 with the 38.5KV ac bus, 1 other end of voltage transformer pt and electric current
It is grounded after mutual inductor LH1 connection；The capacitor passes through corresponding switch respectively and connect with the 38.5KV ac bus；
The one end the earthing switch KM1 is connect with any bus of the 38.5KV ac bus, another termination of earthing switch KM1
Ground.
Further, current transformer LH1 of the present invention is grounded again after connecting with nonlinear resistance R1, the non-linear electricity
It is parallel with switch KM2 on resistance R1, one is also parallel on nonlinear resistance R1 and is used for that detect the voltage transformer pt 1 electric over the ground
The voltage transformer pt 2 of pressure.
Further, capacitor group of the present invention is three groups, and three group capacitors are C1, C2 and C3, described capacitor C1, C2
Capacity ratio with C3 is 1:2:4；The capacitance of described capacitor C1, C2 and C3 are 0.01~0.05 μ F.
Further, earthing switch KM1 of the present invention is grounded after connecting with current transformer LH3.
Further, voltage transformer pt 1 of the present invention with to being provided with corresponding fuse RD between inductive switch G2.
Further, Zinc-Oxide Arrester MOA is connected on 38.5KV ac bus of the present invention, the zinc oxide is lightning-arrest
Device MOA includes the nonlinear resistance R2 connecting respectively with each bus, the nonlinear resistance R2 other end ground connection.
Further, current transformer LH2 is connected between capacitor of the present invention and the 38.5KV ac bus.
Preferably, analogue test platform of the present invention further includes the interface of a test product, by switch G6 with it is described
38.5KV ac bus connects.
Embodiment：35kV high pressure ferromagnetic resonance analogue test platform, functional block diagram is as shown in Figure 1, include that 38.5KV is exchanged
Bus, step-up transformer P, 0.4KV AC power source, voltage transformer pt 1, earthing switch KM1 and three group capacitors（C1,C2,
C3）, wherein the high-pressure side step-up transformer P is connect with 38.5KV ac bus, step-up transformer P low-pressure side and 0.4KV alternating current
Source connection, is provided with switch G and circuit breaker Q F1, step-up transformer P between step-up transformer P low-pressure side and 0.4KV AC power source
Switch G1 and circuit breaker Q F2 are provided between high-pressure side and 38.5KV ac bus.
Voltage transformer pt 1 is connect by corresponding switch G2 and fuse RD with 38.5KV ac bus, and voltage is mutual
The sensor PT1 other end is connect with current transformer LH1, and LH1 flows through voltage transformer pt 1 for detecting when forming ferromagnetic resonance
Current waveform, current transformer LH1 are grounded again after connecting with nonlinear resistance R1；Wherein switch is parallel on nonlinear resistance R1
A voltage transformer pt 2 is also parallel on KM2, nonlinear resistance R1, voltage transformer pt 2 is for detecting voltage transformer
PT1 voltage-to-ground.
Capacitor is set as three, i.e. C1, C2 and C3, each capacitor pass through respectively corresponding switch G3, G4 and
G5 is connect with 38.5KV ac bus；In typical design scheme, capacitor C1：C2：The capacity ratio of C3 is 1:2:4, C1, C2,
The capacitance value range of C3 is 0.01~0.05 μ F；Current transformer LH2 is connected between capacitor and 38.5KV ac bus.
The one end earthing switch KM1 is connect with any bus of 38.5KV ac bus, the earthing switch KM1 other end and electric current
It is grounded after mutual inductor LH3 connection, LH3 flows through fault point when earthing switch KM1 is closed the ground fault to be formed for detecting
Current waveform.
Zinc-Oxide Arrester MOA is connected on 38.5KV ac bus, electric power can be absorbed in the setting of Zinc-Oxide Arrester MOA
The overvoltage of internal system avoids damage of the overvoltage to system insulation.Zinc-Oxide Arrester MOA include respectively with each bus
The nonlinear resistance R2 of connection, nonlinear resistance R2 other end ground connection.The invention also includes one connect with Devices to test it is pre-
Interface is stayed, spare interface is connect with 38.5KV ac bus by switch G6, for example connects station local coordinate frame to be measured, facilitates progress
Experiment of the Devices to test when ferromagnetic resonance occurs.
Voltage transformer pt 1, Zinc-Oxide Arrester MOA, earthing switch KM1 and with 38.5KV ac bus pass through G6 connect
The spare interface connect is integrated in the first protection cabinet 1（The dotted box portion of label 1 in attached drawing 1）, it is mutual to reserve replacement voltage
The replacement position of sensor PT1 and spare interface are convenient for changing the voltage transformer of different size and connect at spare interface
Receive measurement equipment；Each capacitor is integrated into the second protection cabinet 2（The dotted box portion of label 2 in attached drawing 1）, two parts point
Not Ji Cheng, can be effectively during Control experiment once coverage caused by device fault occur, while being also convenient for device
Mobile and installation.
Analogue test platform of the present invention realizes that resonance test is very simple, puts into selected capacitor, is then closed
KM1 opens the generation of excitation ferromagnetic resonance again later.The ginseng of different resonance frequencies can be formed by the combination of C1, C2 and C3
Number matching --- Subharmonic Resonance, industrial frequency resonance, high-frequency resonant etc..
When needing to test influence of the ferromagnetic resonance to power equipment, by equipment under test by G6 access system, then select
The combination of required C1, C2 and C3 by the closure of KM1, open excitation ferromagnetic resonance.
Claims (9)
1. a kind of high pressure ferromagnetic resonance analogue test platform, including 38.5KV ac bus, step-up transformer P, 0.4KV exchange
Power supply, voltage transformer pt 1, earthing switch KM1 and 3-5 group capacitor, which is characterized in that
The high-pressure side of the step-up transformer P is connect with the 38.5KV ac bus, the low-pressure side of step-up transformer P with it is described
The connection of 0.4KV AC power source；
The voltage transformer pt 1 is connect by corresponding switch G2 with the 38.5KV ac bus, and voltage transformer pt 1 is another
One end is grounded after connecting with current transformer LH1；
The capacitor passes through corresponding switch respectively and connect with the 38.5KV ac bus；
The one end the earthing switch KM1 is connect with any bus of the 38.5KV ac bus, the other end of earthing switch KM1
Ground connection.
2. high pressure ferromagnetic resonance analogue test platform according to claim 1, which is characterized in that the current transformer LH1
It is grounded again after being connect with nonlinear resistance R1, is parallel with switch KM2 on the nonlinear resistance R1, on nonlinear resistance R1 also simultaneously
One is associated with for detecting the voltage transformer pt 2 of 1 voltage-to-ground of voltage transformer pt.
3. high pressure ferromagnetic resonance analogue test platform according to claim 1, which is characterized in that the capacitor group is three
Group, three group capacitors are C1, C2 and C3, and the capacity ratio of described capacitor C1, C2 and C3 are 1:2:4.
4. high pressure ferromagnetic resonance analogue test platform according to claim 1, which is characterized in that the earthing switch KM1 with
It is grounded after current transformer LH3 connection.
5. high pressure ferromagnetic resonance analogue test platform according to claim 1, which is characterized in that the voltage transformer pt 1
With to being provided with corresponding fuse RD between inductive switch G2.
6. high pressure ferromagnetic resonance analogue test platform according to claim 1, which is characterized in that the 38.5KV ac bus
On be connected with Zinc-Oxide Arrester MOA, the Zinc-Oxide Arrester MOA includes the nonlinear resistance connecting respectively with each bus
R2, the nonlinear resistance R2 other end ground connection.
7. high pressure ferromagnetic resonance analogue test platform according to claim 1, which is characterized in that the capacitor and 38.5KV
Current transformer LH2 is connected between ac bus.
8. according to claim 1, the high pressure ferromagnetic resonance analogue test platform of 2,3,4,5,6 or 7, which is characterized in that described
Analogue test platform further includes the interface of a test product, is connect by switch G6 with the 38.5KV ac bus.
9. high pressure ferromagnetic resonance analogue test platform according to claim 3, which is characterized in that described capacitor C1, C2 and
The capacitance of C3 is 0.01~0.05 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810783658.2A CN108828418A (en) | 2018-07-17 | 2018-07-17 | High pressure ferromagnetic resonance analogue test platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810783658.2A CN108828418A (en) | 2018-07-17 | 2018-07-17 | High pressure ferromagnetic resonance analogue test platform |
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| Publication Number | Publication Date |
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| CN108828418A true CN108828418A (en) | 2018-11-16 |
Family
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| CN201810783658.2A Pending CN108828418A (en) | 2018-07-17 | 2018-07-17 | High pressure ferromagnetic resonance analogue test platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672958A (en) * | 2019-10-15 | 2020-01-10 | 云南电网有限责任公司文山供电局 | Test device for testing excitation characteristic of voltage transformer |
| CN111813000A (en) * | 2020-06-11 | 2020-10-23 | 广西电网有限责任公司电力科学研究院 | Method and device for simulating ferromagnetic resonance of power distribution network real-time test platform |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110672958A (en) * | 2019-10-15 | 2020-01-10 | 云南电网有限责任公司文山供电局 | Test device for testing excitation characteristic of voltage transformer |
| CN111813000A (en) * | 2020-06-11 | 2020-10-23 | 广西电网有限责任公司电力科学研究院 | Method and device for simulating ferromagnetic resonance of power distribution network real-time test platform |
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