CN208334556U - High pressure ferromagnetic resonance analogue test platform - Google Patents
High pressure ferromagnetic resonance analogue test platform Download PDFInfo
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- CN208334556U CN208334556U CN201821130660.1U CN201821130660U CN208334556U CN 208334556 U CN208334556 U CN 208334556U CN 201821130660 U CN201821130660 U CN 201821130660U CN 208334556 U CN208334556 U CN 208334556U
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Abstract
The utility model 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 utility model 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 utility model belongs to electric system 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.
Utility model content
Technical problem to be solved in the utility model is to overcome defect described above, provides a kind of 10-35kV high pressure iron
Magnetic resonance analogue test platform, for studying generation and the system direct-to-ground capacitance, electromagnetic potential transformer excitation spy of ferromagnetic resonance
Property etc. every design parameter relationship, facilitate influence of the research resonance to the electrical equipment of access power distribution network.
To solve the problems, such as techniques described above, the utility model provides a kind of high pressure ferromagnetic resonance analogue test platform,
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 the step-up transformer P is connect with the 38.5kV ac bus, the low-pressure side of step-up transformer P with
The 0.4kV AC power source connection；
The voltage transformer pt 1 is connect by corresponding switch G2 with the 38.5kV ac bus, voltage transformer
The PT1 other 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, and earthing switch KM1's is another
One end ground connection.
Further, current transformer LH1 described in the utility model is grounded again after connecting with nonlinear resistance R1, described non-thread
Property resistance R1 on be parallel with switch KM2, be also parallel on nonlinear resistance R1 one it is right for detecting the voltage transformer pt 1
The voltage transformer pt 2 of ground voltage.
Further, capacitor group described in the utility model is three groups, and three group capacitors are C1, C2 and C3, the capacitor
The capacity ratio of C1, C2 and C3 are 1:2:4；The capacitance of described capacitor C1, C2 and C3 are 0.01~0.05 μ F.
Further, earthing switch KM1 described in the utility model is grounded after connecting with current transformer LH3.
Further, voltage transformer pt 1 described in the utility model with to being provided with corresponding fuse between inductive switch G2
RD。
Further, Zinc-Oxide Arrester MOA, the zinc oxide are connected on 38.5kV ac bus described in the utility model
Arrester MOA includes the nonlinear resistance R2 connecting respectively with each bus, the nonlinear resistance R2 other end ground connection.
Further, current transformer is connected between capacitor described in the utility model and the 38.5kV ac bus
LH2。
Preferably, analogue test platform described in the utility model further includes the interface of a test product, by switch G6 with
The 38.5kV ac bus connection.
LH1 described in the utility model is used to detect the current waveform for flowing through voltage transformer pt 1 when forming ferromagnetic resonance,
LH3 is for detecting the current waveform for flowing through fault point when earthing switch KM1 is closed the ground fault to be formed.
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.
The utility model has the beneficial effects that the utility model passes through the combination collocation of multiple capacitors and voltage transformer,
And by earthing switch triggering simulation resonance generation, facilitate research resonance generate with voltage transformer items design parameter it
Between relationship；Meanwhile the combination of multiple capacitors facilitates to form different resonance, completes multiple analog.
Detailed description of the invention
Fig. 1 is the utility model principle figure.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
High pressure ferromagnetic resonance analogue test platform described in the utility model, 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 height of the step-up transformer P
Pressure 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；It is described
Voltage transformer pt 1 is connect by corresponding switch G2 with the 38.5kV ac bus, 1 other end of voltage transformer pt and electricity
It is grounded after current transformer LH1 connection；The capacitor passes through corresponding switch respectively and connects with the 38.5kV ac bus
It connects；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 described in the utility model is grounded again after connecting with nonlinear resistance R1, described non-thread
Property resistance R1 on be parallel with switch KM2, be also parallel on nonlinear resistance R1 one it is right for detecting the voltage transformer pt 1
The voltage transformer pt 2 of ground voltage.
Further, capacitor group described in the utility model is three groups, and three group capacitors are C1, C2 and C3, the capacitor
The capacity ratio of C1, C2 and C3 are 1:2:4；The capacitance of described capacitor C1, C2 and C3 are 0.01~0.05 μ F.
Further, earthing switch KM1 described in the utility model is grounded after connecting with current transformer LH3.
Further, voltage transformer pt 1 described in the utility model with to being provided with corresponding fuse between inductive switch G2
RD。
Further, Zinc-Oxide Arrester MOA, the zinc oxide are connected on 38.5kV ac bus described in the utility model
Arrester MOA includes the nonlinear resistance R2 connecting respectively with each bus, the nonlinear resistance R2 other end ground connection.
Further, current transformer is connected between capacitor described in the utility model and the 38.5kV ac bus
LH2。
Preferably, analogue test platform described in the utility model further includes the interface of a test product, by switch G6 with
The 38.5kV ac bus connection.
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, the capacity ratio of capacitor C1:C2: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 utility model further includes one and connect with Devices to test
Spare interface, spare interface is connect with 38.5kV ac bus by switch G6, for example connects station local coordinate frame to be measured, convenient
Carry out 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 (dotted box portion of label 1 in attached drawing 1), and 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 (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 described in the utility model realizes that resonance test is very simple, puts into selected capacitor, then
It is closed KM1, opens the generation of excitation ferromagnetic resonance again later.Different resonance frequencies can be formed by the combination of C1, C2 and C3
Parameter 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 |
|---|---|---|---|
| CN201821130660.1U CN208334556U (en) | 2018-07-17 | 2018-07-17 | High pressure ferromagnetic resonance analogue test platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821130660.1U CN208334556U (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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| CN208334556U true CN208334556U (en) | 2019-01-04 |
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| CN201821130660.1U Active CN208334556U (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 |
|---|---|---|---|---|
| CN108828418A (en) * | 2018-07-17 | 2018-11-16 | 云南电网有限责任公司红河供电局 | High pressure ferromagnetic resonance analogue test platform |
| CN110854857A (en) * | 2019-09-30 | 2020-02-28 | 中国电力科学研究院有限公司 | Oscillation starting loop and control method thereof |
-
2018
- 2018-07-17 CN CN201821130660.1U patent/CN208334556U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828418A (en) * | 2018-07-17 | 2018-11-16 | 云南电网有限责任公司红河供电局 | High pressure ferromagnetic resonance analogue test platform |
| CN110854857A (en) * | 2019-09-30 | 2020-02-28 | 中国电力科学研究院有限公司 | Oscillation starting loop and control method thereof |
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