CN207612055U - A kind of Distribution Network Failure automatic station-keeping system - Google Patents
A kind of Distribution Network Failure automatic station-keeping system Download PDFInfo
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- CN207612055U CN207612055U CN201721905798.XU CN201721905798U CN207612055U CN 207612055 U CN207612055 U CN 207612055U CN 201721905798 U CN201721905798 U CN 201721905798U CN 207612055 U CN207612055 U CN 207612055U
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Abstract
The utility model is related to a kind of Distribution Network Failure automatic station-keeping systems, DC grid and the first conversion equipment are electrically connected, first conversion equipment is electrically connected with the first measuring device and control module respectively, first measuring device is electrically connected with control module, DC grid is connect by inverter with AC network, AC network and the second conversion equipment are electrically connected, second conversion equipment is electrically connected with control module and the second measuring device respectively, DC grid includes DC detecting module and direct current protecting module, DC detecting module and direct current protecting module is all arranged in every DC loop of DC grid, the AC network includes exchange detection module and harmonics module, the every circuit setting exchange detection module and harmonics module of AC network.The utility model can be carried out at the same time detection to DC grid and AC network, to improve detection efficiency, be convenient for quick failure judgement position.
Description
Technical field
The utility model is related to technical field of electric power, more particularly to a kind of Distribution Network Failure automatic station-keeping system.
Background technology
Power distribution network is since circuit is longer, and path situation is complicated, and user is more, sometimes because of external force destruction, plant maintenance, operation
The reasons such as improper, can cause the failures such as short circuit, open circuit.Once distribution network failure occurs, it is necessary first to fault location, simultaneously
It takes timely measure and coverage is avoided to expand.It is existing with network positioning system largely be directed to high-tension line, positioning time compared with
It is long, and for the area with wind-power electricity generation, solar power generation, the electric current that above-mentioned green energy resource generates is direct current, direct current
It is incorporated to AC network, increases the difficulty of Distribution Network Failure positioning.
Utility model content
In order to solve problems in the prior art, Distribution Network Failure can quickly be judged to the utility model by providing one kind, be disconnected
Fault loop, lower-cost Distribution Network Failure automatic station-keeping system.
Specific technical solution is as follows：A kind of Distribution Network Failure automatic station-keeping system, including DC grid, AC network, inversion
Device, the first conversion equipment, the first measuring device, the second conversion equipment, the second measuring device and control module, the DC grid
It being electrically connected with the first conversion equipment, the first conversion equipment is electrically connected with the first measuring device and control module respectively, and first
Measuring device and control module are electrically connected, and DC grid is connect by inverter with AC network, AC network and second turn
Changing device is electrically connected, and the second conversion equipment is electrically connected with control module and the second measuring device respectively, and DC grid includes
DC detecting module and direct current protecting is all arranged in every DC loop of DC detecting module and direct current protecting module, DC grid
Module, the AC network include exchange detection module and harmonics module, every circuit setting exchange inspection of AC network
Survey module and harmonics module.
It is the attached technical scheme of the utility model below.
Preferably, first conversion equipment includes the first conversion circuit and the first relay, the first relay
Have it is multiple, multiple first relays respectively with the first conversion circuit be electrically connected, each DC detecting module with one first after
Electric appliance is electrically connected, and the first conversion circuit is connect with control module.
Preferably, first relay includes the first control units and the second control unit, DC detecting module packet
Divider and current divider are included, divider is connect with the first control units, and current divider is connect with the second control unit, the first measuring device packet
Galvanometer and voltmeter are included, galvanometer is connect with the second control unit, and voltmeter is connect with the first control units.
Preferably, second conversion equipment includes the second conversion circuit and the second relay, the second relay
Have multiple, multiple second relays are electrically connected with the second conversion circuit respectively, it is each exchange detection module and one second after
Electric appliance is electrically connected, and the second conversion circuit is connect with control module.The testing principle of above-mentioned AC network is identical as direct current, passes through
Above-mentioned technical proposal can judge the open circuit of which ac circuit or short circuit, to disconnect corresponding circuit.
Preferably, second relay includes third control unit and the 4th control unit, exchanges detection module packet
Transformer and current transformer are included, transformer is connect with third control unit, and current transformer is connect with the 4th control unit, the second measuring device packet
Galvanometer and voltmeter are included, galvanometer is connect with the 4th control unit, and voltmeter is connect with third control unit.
Preferably, second control unit includes coil and main contact, there are two main contact is set, each main contact
It is arranged between current transformer and galvanometer, coil is electrically connected with conversion circuit.
The technique effect of the utility model：A kind of Distribution Network Failure automatic station-keeping system of the utility model can be to direct current
Net and AC network are carried out at the same time detection, to improve detection efficiency, are convenient for quick failure judgement position；It moreover has been found that therefore
After hindering circuit, circuit can be quickly disconnected, protection power grid overall operation is stablized.
Description of the drawings
Fig. 1 is a kind of frame diagram of Distribution Network Failure automatic station-keeping system of the utility model embodiment.
Fig. 2 is the frame diagram of first conversion equipment of the utility model embodiment.
Fig. 3 is the frame diagram of second conversion equipment of the utility model embodiment.
Fig. 4 is the frame diagram of the 4th control unit of the utility model embodiment.
Specific implementation mode
In the following, the substantive distinguishing features and advantage of the utility model are further described in conjunction with example, but this practicality is new
Type is not limited to listed embodiment.
As shown in Figures 1 to 4, a kind of Distribution Network Failure automatic station-keeping system of the present embodiment includes DC grid 1, alternating current
Net 2, inverter 3, the first conversion equipment 4, the first measuring device 5, the second conversion equipment 6, the second measuring device 7 and control module
8, the DC grid 1 and the first converter 4 are electrically connected, the first conversion equipment 4 respectively with the first measuring device 5 and control mould
Block 8 is electrically connected, and the first measuring device 5 is electrically connected with control module 8.DC grid 1 passes through inverter 3 and AC network 2
Connection, AC network 2 and the second conversion equipment 6 are electrically connected, and the second conversion equipment 6 is measured with control module 8 and second respectively
Device 7 is electrically connected.DC grid 1 includes DC detecting module 11 and direct current protecting module 12, every direct current of DC grid
DC detecting module and direct current protecting module is all arranged in circuit.The AC network 2 includes exchanging detection module 21 and exchanging guarantor
Protect module 22, the every circuit setting exchange detection module and harmonics module of AC network.In above-mentioned technical proposal, direct current
The direct current of power grid is incorporated to AC network by inverter, passes through the first conversion equipment 4 so that multiple direct currents of DC grid are examined
It surveys module to be connected to the first measuring device successively, to detect whether each DC loop breaks down successively.Likewise, passing through
Second conversion equipment and the second measuring device, detect whether each ac circuit breaks down successively.When a certain direct current or exchange
When circuit is broken down, by direct current protecting module and harmonics module, corresponding circuit can be disconnected, to prevent safety
Risk.Direct current protecting module and harmonics module can be breakers.
In the present embodiment, first conversion equipment 4 includes the first conversion circuit 41 and the first relay 42, the first relay
Device 42 have it is multiple, multiple first relays 42 respectively with the first conversion circuit 41 be electrically connected, each DC detecting module 11 with
One the first relay 42 is electrically connected, and the first conversion circuit 41 is connect with control module 8.It can be controlled by the first relay 42
DC detecting module processed is turned on or off with the first measuring device 5, and controlling different first relays by the first conversion circuit leads
Logical, the same time, only there are one the first relays to be connected.
In the present embodiment, first relay 42 includes the first control units 421 and the second control unit 422, DC detecting
Module 11 includes divider 111 and current divider 112, and divider 111 is connect with the first control units 421, and current divider 112 and second is controlled
Portion 422 processed connects.First measuring device 5 includes galvanometer 51 and voltmeter 52, and galvanometer 51 is connect with the second control unit 422,
Voltmeter 52 is connect with the first control units 422.Through the above technical solutions, when some the first relay is connected, then its first
Control unit and the second control unit are both turned on, and when the first relay is not turned on, the first, second control unit is not turned on.To logical
The electric current and voltage of corresponding DC loop can be measured by crossing galvanometer and voltmeter, when electric current is too small or voltage is excessive, be judged
For open circuit or short circuit, corresponding circuit is disconnected to control direct current protecting module.
In the present embodiment, second conversion equipment 6 includes the second conversion circuit 61 and the second relay 62, the second relay
Device 62 has multiple, and multiple second relays are electrically connected with the second conversion circuit 61 respectively, each to exchange detection module 21 and one
A second relay is electrically connected, and the second conversion circuit is connect with control module.The testing principle and direct current of above-mentioned AC network
It is identical, through the above technical solutions, the open circuit of which ac circuit or short circuit can be judged, to disconnect corresponding circuit.
In the present embodiment, second relay 62 includes third control unit 621 and the 4th control unit 622, exchange detection
Module 21 includes transformer 211 and current transformer 212, and transformer 211 is connect with third control unit, and current transformer 212 and the 4th controls
Portion 622 connects, and the second measuring device 7 includes galvanometer 71 and voltmeter 72, and galvanometer connect with the 4th control unit, voltmeter and
Third control unit connects.In above-mentioned technical proposal, by transformer and current transformer, by the voltage and current of alternating current be converted into compared with
Small voltage and current measures judgement.
In the present embodiment, first relay and the second relay are the identical relay of structure, the 4th control unit 622
Including coil 10 and contact 20, coil is connect with the second conversion circuit 61, and contact switches between A points and B points, when contact and A
When point contact, relay disconnects, when contact and B point contacts, relay conducting.
A kind of Distribution Network Failure automatic station-keeping system of the present embodiment can be carried out at the same time inspection to DC grid and AC network
It surveys, to improve detection efficiency, is convenient for quick failure judgement position；It moreover has been found that after fault loop, can quickly disconnect back
Road, protection power grid overall operation are stablized.
It should be pointed out that above-mentioned preferred embodiment is only to illustrate the technical concepts and features of the utility model, purpose
It is the content for allowing person skilled in the art that can understand the utility model and implements according to this, this reality can not be limited with this
With novel protection domain.It is all according to equivalent change or modification made by the spirit of the present invention essence, should all cover in this reality
Within novel protection domain.
Claims (6)
1. a kind of Distribution Network Failure automatic station-keeping system, which is characterized in that including DC grid, AC network, inverter, first turn
Changing device, the first measuring device, the second conversion equipment, the second measuring device and control module, the DC grid and first turn
Changing device is electrically connected, and the first conversion equipment is electrically connected with the first measuring device and control module respectively, the first measuring device
It is electrically connected with control module, DC grid is connect by inverter with AC network, AC network and the second conversion equipment electricity
Property connection, the second conversion equipment is electrically connected with control module and the second measuring device respectively, and DC grid includes DC detecting
DC detecting module and direct current protecting module, institute is all arranged in every DC loop of module and direct current protecting module, DC grid
It includes exchange detection module and harmonics module to state AC network, every circuit setting exchange detection module of AC network and
Harmonics module.
2. Distribution Network Failure automatic station-keeping system as described in claim 1, which is characterized in that first conversion equipment includes the
One conversion circuit and the first relay, the first relay have multiple, and multiple first relays are electrical with the first conversion circuit respectively
Connection, each DC detecting module are electrically connected with first relay, and the first conversion circuit is connect with control module.
3. Distribution Network Failure automatic station-keeping system as claimed in claim 2, which is characterized in that first relay includes first
Control unit and the second control unit, DC detecting module include divider and current divider, and divider is connect with the first control units, shunting
Device is connect with the second control unit, and the first measuring device includes galvanometer and voltmeter, and galvanometer is connect with the second control unit, voltage
Table is connect with the first control units.
4. Distribution Network Failure automatic station-keeping system as claimed in claim 3, which is characterized in that second conversion equipment includes the
Two conversion circuits and the second relay, the second relay have multiple, and multiple second relays are electrical with the second conversion circuit respectively
Connection, each to exchange detection module and the second relay electric connection, the second conversion circuit is connect with control module, above-mentioned
The testing principle of AC network is identical as direct current, through the above technical solutions, can judge the open circuit of which ac circuit or short circuit,
To disconnect corresponding circuit.
5. Distribution Network Failure automatic station-keeping system as claimed in claim 4, which is characterized in that second relay includes third
Control unit and the 4th control unit, exchange detection module includes transformer and current transformer, and transformer is connect with third control unit, unsteady flow
Device is connect with the 4th control unit, and the second measuring device includes galvanometer and voltmeter, and galvanometer is connect with the 4th control unit, voltage
Table is connect with third control unit.
6. Distribution Network Failure automatic station-keeping system as claimed in claim 5, which is characterized in that second control unit includes coil
And main contact, there are two main contact is set, each main contact is arranged between current transformer and galvanometer, and coil and conversion circuit are electrical
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721905798.XU CN207612055U (en) | 2017-12-29 | 2017-12-29 | A kind of Distribution Network Failure automatic station-keeping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721905798.XU CN207612055U (en) | 2017-12-29 | 2017-12-29 | A kind of Distribution Network Failure automatic station-keeping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207612055U true CN207612055U (en) | 2018-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721905798.XU Active CN207612055U (en) | 2017-12-29 | 2017-12-29 | A kind of Distribution Network Failure automatic station-keeping system |
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| Country | Link |
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| CN (1) | CN207612055U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289843A (en) * | 2020-03-30 | 2020-06-16 | 云南电网有限责任公司电力科学研究院 | MMC-MTDC system direct-current line interelectrode fault distance measurement method |
-
2017
- 2017-12-29 CN CN201721905798.XU patent/CN207612055U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289843A (en) * | 2020-03-30 | 2020-06-16 | 云南电网有限责任公司电力科学研究院 | MMC-MTDC system direct-current line interelectrode fault distance measurement method |
| CN111289843B (en) * | 2020-03-30 | 2022-04-12 | 云南电网有限责任公司电力科学研究院 | MMC-MTDC system direct-current line interelectrode fault distance measurement method |
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