CN107123980A - Closed loop network running gear and its application process - Google Patents
Closed loop network running gear and its application process Download PDFInfo
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- CN107123980A CN107123980A CN201710190342.8A CN201710190342A CN107123980A CN 107123980 A CN107123980 A CN 107123980A CN 201710190342 A CN201710190342 A CN 201710190342A CN 107123980 A CN107123980 A CN 107123980A
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- 238000000034 method Methods 0.000 title claims description 13
- 230000008569 process Effects 0.000 title claims description 9
- 230000008878 coupling Effects 0.000 claims abstract description 33
- 238000010168 coupling process Methods 0.000 claims abstract description 33
- 238000005859 coupling reaction Methods 0.000 claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000007363 ring formation reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910001037 White iron Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H02J3/005—
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Abstract
The invention discloses a kind of closed loop network running gear, belong to technical field of power systems.The Electromagnetic coupling device includes three-phase, and each phase includes rectification side, DC/DC units and inverter side.The input of rectification side is used for treating that the first industrial frequency AC bus of Electromagnetic coupling is connected, the output end of rectification side is connected with the side of DC/DC units, the opposite side of DC/DC units is connected with the input of inverter side, and the output end of inverter side is used for treating that the second industrial frequency AC bus of Electromagnetic coupling is connected；Wherein, rectification side includes N number of the first full bridge unit being concatenated together, and inverter side includes N number of second of full bridge unit being concatenated together, and DC/DC units include N number of full-bridge rectification unit and N number of full-bridge inverting unit, and N is positive integer.The power distribution network is the specific application of one kind of the Electromagnetic coupling device.The Electromagnetic coupling device can realize the transmitted in both directions of four quadrant running and power, so as to ensure the security of closed loop network operation.
Description
Technical field
The present invention relates to technical field of power systems, more particularly to a kind of closed loop network running gear and application its
Power distribution network and its application process.
Background technology
Under current power market environment, power supply quality and power supply reliability are also to weigh electric company's core competitiveness
One of standard.For a long time, China's medium voltage distribution network uses closed loop design, the framework mode of open loop operation, in this mould mostly
Run under formula, power distribution network shows typical tree-shaped running status, electric current flows to load from single busbar one direction, although be easy to fortune
Row and management, facilitate the selection of protection device, but because under this operational mode, load obtains electric energy from single bus so that
Distribution network reliability is reduced.
Under conventional electrical distribution net open loop operation and the mode of partition running, want to improve distribution network reliability, can only
From equipment dependability and the other load transfering channels of increase, but these methods are improved, customer charge can not be all avoided from single
Power supply obtains the phenomenon of electric energy, and can not fundamentally solve the problem of distribution network reliability is relatively low.More than solving
Problem, on the basis of it with reference to external related power distribution network operating experience, Some Domestic power network also uses the fortune of Electromagnetic coupling
Line mode, this kind of power distribution network difference maximum with conventional electrical distribution net is exactly closed loop design, and Electromagnetic coupling effectively improves user's confession
Electric reliability.
Current China realizes the method that closed loop network operation is mostly interconnected using breaker, this device cyclization condition ratio
It is harsher, when performing Loop Closing Operation, it is necessary to meet that cyclization point voltage magnitude is consistent, cyclization point voltage-phase is consistent and
Both sides power distribution network short-circuit impedance such as matches at the necessary condition, once condition is unsatisfactory for,
- larger Alloy White Iron will be produced, cause cyclization to fail.
The content of the invention
In view of this, the power distribution network the invention provides a kind of closed loop network running gear and using it and its application side
Method, it can realize four quadrant running, it is ensured that the security of closed loop network operation, thus more suitable for practicality.
In order to reach above-mentioned first purpose, the technical scheme for the closed loop network running gear that the present invention is provided is as follows：
The closed loop network running gear that the present invention is provided include three-phase, each phase include rectification side, DC/DC units and
Inverter side,
The input of the rectification side is used for treating that the first industrial frequency AC bus of Electromagnetic coupling is connected,
The output end of the rectification side is connected with the side of the DC/DC units,
The opposite side of the DC/DC units is connected with the input of the inverter side,
The output end of the inverter side is used for treating that the second industrial frequency AC bus of Electromagnetic coupling is connected；
Wherein, the rectification side includes N number of the first full bridge unit being concatenated together, and the inverter side includes N number of level
Second of full bridge unit being linked togather, the DC/DC units include N number of full-bridge rectification unit and N number of full-bridge inverting unit, N
For positive integer.
The closed loop network running gear that the present invention is provided can be also applied to the following technical measures to achieve further.
Preferably, the first described full bridge unit includes the first full-bridge circuit and the first DC bus capacitor,
The first described full-bridge circuit is in parallel with the first described DC bus capacitor,
The output end of the first full bridge unit is connected with the input of the DC/DC units,
After the first N number of described full bridge unit is mutually cascaded, for female with first industrial frequency AC for treating Electromagnetic coupling
Line is connected.
-
Preferably, the DC/DC units include Converting Unit, transformer group and rectifying part,
The Converting Unit includes N number of full-bridge inverting unit,
The DC side of the full-bridge inverting unit is connected with the rectification side,
The AC of the full-bridge inverting unit is connected with the transformer group,
The rectifying part includes N number of full-bridge rectification unit,
The DC side of the full-bridge rectification unit is connected with the inverter side.
Preferably, the transformer group includes N number of single winding transformer, one end of each single winding transformer and institute
State Converting Unit to be connected, the other end of each single winding transformer is connected with the rectifying part.
Preferably, second of full bridge unit includes second of full-bridge circuit and second of DC capacitor,
Second of full-bridge circuit is in parallel with second of DC capacitor,
The DC side of second of full bridge unit is connected with the DC/DC units,
After the AC cascade of N number of second of full bridge unit, for being handed over second power frequency for treating Electromagnetic coupling
Bus is flowed to be connected.
In order to reach above-mentioned second purpose, the technical scheme for the power distribution network that the present invention is provided is as follows：
The power distribution network of the Electromagnetic coupling device provided using the present invention includes the first industrial frequency AC bus, the second industrial frequency AC
Busbar transformer group,
The input of the rectification side for the Electromagnetic coupling device that the present invention is provided is connected with the first industrial frequency AC bus,
The output end of the inverter side for the Electromagnetic coupling device that the present invention is provided is connected with the second industrial frequency AC bus,
The transformer group is respectively distributed to the first industrial frequency AC bus bar side and the second industrial frequency AC bus bar side.
The power distribution network that the present invention is provided can be also applied to the following technical measures to achieve further.
-
Preferably,
The first industrial frequency AC bus includes the first 110kV industrial frequency ACs bus and/or the first 35kV industrial frequency ACs are female
Line and/or the first 10kV industrial frequency AC buses；
The second industrial frequency AC bus includes the 2nd 110kV industrial frequency ACs bus and/or the 2nd 35kV industrial frequency ACs are female
Line and/or the 2nd 10kV industrial frequency AC buses.
Preferably, the first 35kV industrial frequency ACs bus and/or the 2nd 35kV industrial frequency ACs bus and/or first
Load is connected on 10kV industrial frequency ACs bus and/or the 2nd 10kV industrial frequency AC buses.
In order to reach above-mentioned 3rd purpose, the technical scheme of the application process for the power distribution network that the present invention is provided is as follows：
The application process for the power distribution network that the present invention is provided comprises the following steps：
It is Awaiting Overhaul side to define the circuit in the rectification side or inverter side where any transformer, and opposite side is then to treat
Shift side；
When the circuit of Awaiting Overhaul side needs maintenance, the corresponding industrial frequency AC of load of the detection in the Awaiting Overhaul side is female
Voltage magnitude and voltage phase difference on line；
According to the result of the voltage magnitude and phase difference, the Electromagnetic coupling device that the regulation present invention is provided so that be in
The load of the Awaiting Overhaul side is transferred to the side to be transferred；
Confirm that the load of the Awaiting Overhaul side is transferred into the side to be transferred；
The circuit of the Awaiting Overhaul side is disconnected, Awaiting Overhaul side line road is overhauled.
The closed loop network running gear that the embodiment of the present invention one is provided is after applied to power distribution network, when being connected to rectification side
Or the circuit where the transformer of inverter side needs maintenance, that is, when needing Loop Closing Operation in Distribution Network, can be obtained according to detection
Industrial frequency AC bus voltage magnitude and voltage phase difference, run closed loop network, so that by rectification side or inverter side
Load be transferred on the industrial frequency AC bus of offside, then disconnect again in the circuit where the transformer of Awaiting Overhaul side,
Overhauled, the power distribution network provided due to the present invention
Rectification side, DC/DC units and inverter side in-Electromagnetic coupling device have selected full-bridge circuit, can realize four
Quadrant runs the transmitted in both directions with power, and therefore, it enables to load to enter in the case where not powering off to Awaiting Overhaul transformer
Row maintenance, and ensure that the security of closed loop network operation.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is the electrical block diagram for the closed loop network running gear that the embodiment of the present invention one is provided；
Fig. 2 is the electrical block diagram for the power distribution network that the embodiment of the present invention two is provided；
Fig. 3 is the step flow chart of the application process for the power distribution network that the embodiment of the present invention three is provided.
Embodiment
A kind of the problem of present invention exists for solution prior art matching somebody with somebody there is provided closed loop network running gear and using it
Power network and its application process, it can realize four quadrant running, it is ensured that the security of closed loop network operation, thus more suitable for
It is practical.
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to the power distribution network according to closed loop network running gear proposed by the present invention and using it and its application
Method, its embodiment, structure, feature and its effect are described in detail as after.In the following description, a different " implementation
What example " or " embodiment " referred to is not necessarily same embodiment.In addition, special characteristic, structure or spy in one or more embodiments
Point can be combined by any suitable form.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, represents there may be
- three kinds of relations, for example, A and/or B, is specifically interpreted as：A and B can be included simultaneously, can with individualism A,
Can also individualism B, can possess above-mentioned three kinds of any situations.
Embodiment one
Referring to accompanying drawing 1, the closed loop network running gear that the embodiment of the present invention one is provided includes three-phase, and each phase includes
Rectification side 101, DC/DC units 102 and inverter side 103.The input (A/B/C) of rectification side 101 is used for treating Electromagnetic coupling
First industrial frequency AC bus is connected, and the output end of rectification side 101 is connected with the side of DC/DC units 102, DC/DC units 102
Opposite side is connected with the input of inverter side 103, and the output end (a/b/c) of inverter side 103 is used for second with treating Electromagnetic coupling
Industrial frequency AC bus is connected；Wherein, rectification side includes N number of the first full bridge unit 104 being concatenated together, and inverter side 103 is wrapped
N number of second of full bridge unit 108 being concatenated together is included, DC/DC units 102 include N number of full-bridge rectification unit 105 and N number of complete
Bridge inversion unit 106, N is positive integer.
The closed loop network running gear that the embodiment of the present invention one is provided is after applied to power distribution network, when being connected to rectification side
101 or inverter side 103 transformer where circuit need maintenance, that is, can be according to inspection when needing Loop Closing Operation in Distribution Network
The voltage magnitude and voltage phase difference of the industrial frequency AC bus measured, run closed loop network, thus by rectification side 101 or
The load of person's inverter side 103 is transferred on the industrial frequency AC bus of offside, and the transformer in Awaiting Overhaul side is then disconnected again
The circuit at place, is overhauled, rectification side 101, DC/DC units in the closed loop network running gear provided due to the present invention
102 and inverter side 103 selected full-bridge circuit, the transmitted in both directions of four quadrant running and power can be realized, therefore, it can
So that load is overhauled in the case where not powering off to Awaiting Overhaul transformer, and it ensure that the safety of closed loop network operation
Property.
Wherein, the first full bridge unit 104 includes the first full-bridge circuit and the first DC bus capacitor 108.The first
Full-bridge circuit is in parallel with the first DC bus capacitor 108, and the output end of the first full bridge unit 104 is defeated with DC/DC units 102
Enter end to be connected, after the mutually cascade of the first N number of full bridge unit 101, be used for
- with treating that the first industrial frequency AC bus of Electromagnetic coupling is connected.
Wherein, DC/DC units 102 include Converting Unit 105, transformer group and rectifying part 106.Converting Unit 105 is wrapped
Include N number of full-bridge inverting unit, the DC side of full-bridge inverting unit is connected with rectification side 101, the AC of full-bridge inverting unit with
Transformer group is connected, and rectifying part 106 includes N number of full-bridge rectification unit, DC side and the phase of inverter side 103 of full-bridge rectification unit
Even.
Wherein, transformer group includes N number of single winding transformer, one end and the phase of Converting Unit 105 of each single winding transformer
Even, the other end of each single winding transformer is connected with rectifying part 106.
Wherein, second of full bridge unit 107 includes second of full-bridge circuit and second of DC capacitor 111.Second complete
Bridge circuit is in parallel with second of DC capacitor 111, and the DC side of second of full bridge unit is connected with DC/DC units 102, and N number of
After the AC cascade of two kinds of full bridge units, for treating that the second industrial frequency AC bus of Electromagnetic coupling is connected.
Embodiment two
Referring to accompanying drawing 2, the power distribution network of the Electromagnetic coupling device provided using the embodiment of the present invention one is handed over including the first power frequency
Flow bus (201,203,205), the second industrial frequency AC bus (202,204,206) and transformer group (transformer 001, transformer
002nd, transformer 003, transformer 004).The rectification side for the Electromagnetic coupling device (207,208) that the embodiment of the present invention one is provided
Input (A1, B1, C1, A2, B2, C2) is connected (201,203,205) with the first industrial frequency AC bus, and the embodiment of the present invention one is carried
The output end (a1, b1, c1, a2, b2, c2) of the inverter side of the Electromagnetic coupling device (207,208) of confession is female with the second industrial frequency AC
Line (202,204,205) is connected, and transformer group (transformer 001, transformer 002, transformer 003, transformer 004) is distributed respectively
In the first industrial frequency AC bus (201,203,205) side and the second industrial frequency AC bus (202,204,206) side.
The closed loop network running gear that the embodiment of the present invention one is provided is after applied to power distribution network, when being connected to rectification side
101 or inverter side 103 transformer where circuit need maintenance, that is, need closed loop network
During-operation, the voltage magnitude and voltage phase difference of the industrial frequency AC bus that can be obtained according to detection make power distribution network
Electromagnetic coupling, so as to the load of rectification side 101 or inverter side 103 is transferred on the industrial frequency AC bus of offside, Ran Houzai
Disconnect in the circuit where the transformer of Awaiting Overhaul side, overhauled, the closed loop network operation provided due to the present invention
Rectification side 101, DC/DC units 102 and inverter side 103 in device have selected full-bridge circuit, can realize four quadrant running
With the transmitted in both directions of power, therefore, it enables to load to be overhauled in the case where not powering off to Awaiting Overhaul transformer, and
It ensure that the security of closed loop network operation.
Wherein, the first industrial frequency AC bus (201,203,205) includes the first 110kV industrial frequency ACs bus 201 and/or the
One 35kV industrial frequency ACs bus 203 and/or the first 10kV industrial frequency ACs bus 205；Second industrial frequency AC bus (202,204,
206) the 2nd 110kV industrial frequency ACs bus 202 and/or the 2nd 35kV industrial frequency ACs bus 204 and/or the 2nd 10kV power frequencies are included
Ac bus 206.
Wherein, the first 35kV industrial frequency ACs bus 203 and/or the 2nd 35kV industrial frequency ACs bus 204 and/or the first 10kV
Load is connected on the 10kV industrial frequency ACs bus 206 of industrial frequency AC bus 205 and/or the 2nd.
Embodiment three
Referring to accompanying drawing 3, the application process for the power distribution network that the embodiment of the present invention three is provided comprises the following steps：
Step S1：Appoint in the rectification side 101 or inverter side 103 of the closed loop network running gear that the definition present invention is provided
Circuit where one transformer is Awaiting Overhaul side, and opposite side is then side to be transferred；
Step S2：When the circuit of Awaiting Overhaul side needs maintenance, the corresponding power frequency of load of the detection in Awaiting Overhaul side is handed over
Flow voltage magnitude and voltage phase difference on bus；
Step S3：According to the result of voltage magnitude and phase difference, the Electromagnetic coupling device that the regulation present invention is provided so that place
Load in Awaiting Overhaul side is transferred to side to be transferred；
Step S4：Confirm that the load of Awaiting Overhaul side is transferred into side to be transferred；
-
Step S5：The circuit of Awaiting Overhaul side is disconnected, Awaiting Overhaul side line road is overhauled.
The closed loop network running gear that the embodiment of the present invention one is provided is after applied to power distribution network, when being connected to rectification side
101 or inverter side 103 transformer where circuit need maintenance, that is, can be according to inspection when needing Loop Closing Operation in Distribution Network
The voltage magnitude and voltage phase difference of the industrial frequency AC bus measured, run closed loop network, thus by rectification side 101 or
The load of person's inverter side 103 is transferred on the industrial frequency AC bus of offside, and the transformer in Awaiting Overhaul side is then disconnected again
The circuit at place, is overhauled, rectification side 101, DC/DC units in the closed loop network running gear provided due to the present invention
102 and inverter side 103 selected full-bridge circuit, the transmitted in both directions of four quadrant running and power can be realized, therefore, it can
So that load is overhauled in the case where not powering off to Awaiting Overhaul transformer, and it ensure that the safety of closed loop network operation
Property.
Specifically,
110kV industrial frequency ACs bus 201,202,35kV industrial frequency ACs bus 203,204,10kV industrial frequency ACs bus 205,
206, wherein 110kV industrial frequency ACs bus 201,202 is respectively that 35kV industrial frequency ACs are female by transformer 001 and transformer 002
Load conveys electric energy on line 203,204 and its bus, and 35kV industrial frequency ACs bus 203,204 by transformer 003 and becomes respectively
Depressor 004 is that 10kV industrial frequency ACs bus 205,206 conveys electric energy, when the circuit where transformer 001 needs maintenance, that is, is matched somebody with somebody
When power network needs Loop Closing Operation, in order that the load on 35kV industrial frequency ACs bus 203 and its bus is not powered off, detect respectively
Voltage magnitude and voltage phase difference on 35kV industrial frequency ACs bus 203 and 35kV industrial frequency ACs bus 204, according to testing result
Difference, using rational control strategy, the flexible ring device of control puts into operation, realizes that closed loop network is run, at the same by
Gradually the load on 35kV industrial frequency ACs bus 203, is to the last transferred to by becoming by the electric current of the flexible ring device of regulation flowing
On the 35kV industrial frequency AC buses that depressor 002 is powered, the circuit where transformer 001 then can be disconnected, is overhauled.Work as change
When circuit where depressor 003 needs maintenance, i.e., when power distribution network needs Loop Closing Operation, in order that 10kV industrial frequency ACs bus 205
And its bus
- on load do not power off, detect respectively on 10kV industrial frequency ACs bus 205 and 10kV industrial frequency ACs bus 206
Voltage magnitude and voltage phase difference, according to the difference of testing result, using rational control strategy, the flexible ring device of control is thrown
Enter operation, realize that closed loop network is run, while the gradually electric current of the flexible ring device of regulation flowing, to the last by 10kV works
Load on frequency ac bus 205 is transferred on the 10kV industrial frequency AC buses powered by transformer 004, then can disconnect change
Circuit where depressor 003, is overhauled.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (9)
1. a kind of closed loop network running gear, it is characterised in that including three-phase, each phase includes rectification side, DC/DC units
And inverter side,
The input of the rectification side is used for treating that the first industrial frequency AC bus of Electromagnetic coupling is connected,
The output end of the rectification side is connected with the side of the DC/DC units,
The opposite side of the DC/DC units is connected with the input of the inverter side,
The output end of the inverter side is used for treating that the second industrial frequency AC bus of Electromagnetic coupling is connected；
Wherein, the rectification side includes N number of the first full bridge unit being concatenated together, and the inverter side is associated in including N number of level
Second of full bridge unit together, the DC/DC units include N number of full-bridge rectification unit and N number of full-bridge inverting unit, and N is just
Integer.
2. closed loop network running gear according to claim 1, it is characterised in that the first described full bridge unit includes
The first full-bridge circuit and the first DC bus capacitor,
The first described full-bridge circuit is in parallel with the first described DC bus capacitor,
The output end of the first full bridge unit is connected with the input of the DC/DC units,
After the first N number of described full bridge unit is mutually cascaded, for the first industrial frequency AC bus phase for treating Electromagnetic coupling
Even.
3. closed loop network running gear according to claim 1, it is characterised in that the DC/DC units include inversion
Partly, transformer group and rectifying part,
The Converting Unit includes N number of full-bridge inverting unit,
The DC side of the full-bridge inverting unit is connected with the rectification side,
The AC of the full-bridge inverting unit is connected with the transformer group,
The rectifying part includes N number of full-bridge rectification unit,
The DC side of the full-bridge rectification unit is connected with the inverter side.
4. closed loop network running gear according to claim 3, it is characterised in that the transformer group includes N number of list
Winding transformer, one end of each single winding transformer is connected with the Converting Unit, each single winding transformer it is another
One end is connected with the rectifying part.
5. closed loop network running gear according to claim 1, it is characterised in that second of full bridge unit includes
Second of full-bridge circuit and second of DC capacitor,
Second of full-bridge circuit is in parallel with second of DC capacitor,
The DC side of second of full bridge unit is connected with the DC/DC units,
After the AC cascade of N number of second of full bridge unit, for female with second industrial frequency AC for treating Electromagnetic coupling
Line is connected.
6. the power distribution network of any described Electromagnetic coupling device in application Claims 1 to 5, it is characterised in that including the first work
Frequency ac bus, the second industrial frequency AC busbar transformer group,
The input of the rectification side of any described Electromagnetic coupling device and first industrial frequency AC are female in Claims 1 to 5
Line is connected,
The output end of the inverter side of any described Electromagnetic coupling device and second industrial frequency AC are female in Claims 1 to 5
Line is connected,
The transformer group is respectively distributed to the first industrial frequency AC bus bar side and the second industrial frequency AC bus bar side.
7. power distribution network according to claim 6, it is characterised in that
The first industrial frequency AC bus include the first 110kV industrial frequency ACs bus and/or the first 35kV industrial frequency ACs bus and/
Or the first 10kV industrial frequency AC bus；
The second industrial frequency AC bus include the 2nd 110kV industrial frequency ACs bus and/or the 2nd 35kV industrial frequency ACs bus and/
Or the 2nd 10kV industrial frequency AC bus.
8. power distribution network according to claim 7, it is characterised in that the first 35kV industrial frequency ACs bus and/or second
Connected respectively on 35kV industrial frequency ACs bus and/or the first 10kV industrial frequency ACs bus and/or the 2nd 10kV industrial frequency AC buses
There is load.
9. the application process of any described power distribution network in claim 6~8, it is characterised in that comprise the following steps：
It is Awaiting Overhaul side to define the circuit in the rectification side or inverter side where any transformer, and opposite side is then to be to be transferred
Side；
When the circuit of Awaiting Overhaul side needs maintenance, on the corresponding industrial frequency AC bus of load of the detection in the Awaiting Overhaul side
Voltage magnitude and voltage phase difference；
According to the result of the voltage magnitude and phase difference, any described Electromagnetic coupling device in Claims 1 to 5 is adjusted,
So that the load in the Awaiting Overhaul side is transferred to the side to be transferred；
Confirm that the load of the Awaiting Overhaul side is transferred into the side to be transferred；
The circuit of the Awaiting Overhaul side is disconnected, Awaiting Overhaul side line road is overhauled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200218 | 2016-12-22 | ||
| CN2016112002187 | 2016-12-22 |
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| CN107123980A true CN107123980A (en) | 2017-09-01 |
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| CN201710190342.8A Pending CN107123980A (en) | 2016-12-22 | 2017-03-28 | Closed loop network running gear and its application process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109149752A (en) * | 2018-08-15 | 2019-01-04 | 广东安朴电力技术有限公司 | A kind of cyclization turn power supply SOP device, system and method |
| WO2022033185A1 (en) * | 2020-08-11 | 2022-02-17 | 东南大学 | Module-shared flexible loop closing controller topology for power grid |
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