CN207039285U - External power source accesses low-voltage power supply system device - Google Patents
External power source accesses low-voltage power supply system device Download PDFInfo
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- CN207039285U CN207039285U CN201720915967.1U CN201720915967U CN207039285U CN 207039285 U CN207039285 U CN 207039285U CN 201720915967 U CN201720915967 U CN 201720915967U CN 207039285 U CN207039285 U CN 207039285U
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- phase sequence
- power supply
- supply system
- external power
- power source
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Abstract
The utility model discloses a kind of external power source to access low-voltage power supply system device, is related to defeated change distribution technique field；Including primary circuit and secondary circuit, the primary circuit is connected by breaker and cable accessing port and formed, and phase sequence relay is connected between the breaker and the cable accessing port；The normally opened contact of the secondary circuit including the phase sequence relay is connected the correct indicating circuit of the phase sequence to be formed with the correct indicator lamp of phase sequence, and the normally-closed contact and phase sequence mistake indicator lamp of the phase sequence relay are connected the phase sequence mistake indicating circuit to be formed.The problem of the utility model can solve wiring existing for prior art time-consuming, and potential safety hazard is big, and power supply reliability is low.
Description
Technical field
Defeated change distribution technique field is the utility model is related to, it is especially a kind of to be used in low-voltage power supply system dead electricity when side
Just the device of the external power sources such as generator or generator car, is quickly accessed.
Background technology
Low-voltage power supply system is as being transported to electricity, for the important system of electricity consumption, its reliability directly determine whole power train
System, customer charge can normal operation, therefore in low-voltage power supply system dead electricity, correctly external power is accessed in time, kept
Whole power system, customer charge normal operation are particularly important.And existing external power access way is presented to open low pressure
Line screen rear cable room, using cable bolt-connection, there is problems with for this mode：
1. time-consuming for wiring：Low pressure feeder line screen rear cable room narrow space, position is compact, the screen cabinet of different model producer
Structure is different, wiring difficulty.Judge indicator function without phase simultaneously so that each wiring needs repeated disassembled and assembled, expends the time
It is long, generally require 30 minutes to 2 hours.
2. security risk is big：The existing mode of connection, in whole external power supply power supply process, low pressure feeder line screen back door is all
Opening-wide state, and connection cable room it is exposed charged metal position it is more, increase personnel electric shock risk.
3. power supply reliability is low：Because low pressure feeder line screen back door will keep opening-wide state, exist in power supply process
The possibility that toy enters, the risk for causing phase fault to trip.
Utility model content
The purpose of this utility model is to provide a kind of external power source access low-voltage power supply system device, and it can solve existing
Wiring existing for technology the problem of time-consuming, and potential safety hazard is big, and power supply reliability is low.
In order to solve the above problems, the technical solution adopted in the utility model is：This external power source accesses low-voltage power supply
System and device, including primary circuit and secondary circuit, the primary circuit are connected by breaker and cable accessing port and formed, in institute
State and be connected with phase sequence relay between breaker and the cable accessing port；The secondary circuit includes the phase sequence relay
Normally opened contact is connected the correct indicating circuit of the phase sequence to be formed with the correct indicator lamp of phase sequence, the normally-closed contact of the phase sequence relay and
Phase sequence mistake indicator lamp is connected the phase sequence mistake indicating circuit to be formed.
In above-mentioned technical proposal, more specifically scheme can also be：The secondary circuit also includes the phase sequence relay
The tripping coil of the normally-closed contact of device and the breaker is connected the trip circuit to be formed.
Further：The cable accessing port is 380 volts of three-phase four-wire system aviation plugs.
Further：The cable accessing port is four independent single-core plugs of 1000 volts and following voltage class.
Further：The powered indicator lamp of bus is connected between the phase line of the primary circuit and zero line.
By adopting the above-described technical solution, the utility model compared with prior art, has an advantageous effect in that：This reality
Cable accessing port is provided with new, external power source can be accessed with fast and easy, while is provided with phase sequence relay, in low-voltage power supply system
In the case that there is decompression in system, if external power source is connected with cable accessing port, and by phase sequence relay to external power source
Whether correctly judged with the phase sequence of system, load end equipment operation exception when avoiding input external power phase sequence mistake, section
The time of wiring is saved.
Brief description of the drawings
Fig. 1 is the wiring schematic diagram of embodiment 1.
Fig. 2 is the wiring schematic diagram of embodiment 2.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples：
Embodiment 1
External power source access low-voltage power supply system device shown in Fig. 1, including primary circuit and secondary circuit, primary circuit
Connected and formed by circuit breaker Q 1 and cable accessing port X, phase sequence relay is connected between circuit breaker Q 1 and cable accessing port X
KPH；The normally opened contact of secondary circuit including the phase sequence relay KPH phase sequence to be formed of being connected with the correct indicator lamp H2 of phase sequence correctly refers to
Show circuit, phase sequence relay KPH normally-closed contact and phase sequence mistake indicator lamp H3 are connected the phase sequence mistake indicating circuit to be formed, phase
Sequence relay KPH normally-closed contact and the tripping coil of circuit breaker Q 1 are connected the trip circuit to be formed；Phase line in primary circuit
The powered indicator lamp H1 of bus is connected between zero line.The present apparatus is arranged in low pressure feeder line screen.
Device installation and debugging：At the beginning of installation and debugging, the tripping coil of circuit breaker Q 1 does not access the normally closed of phase sequence relay KPH
On contact；During low-voltage power supply system normal operation, the powered indicator lamp H1 of bus is bright, closes circuit breaker Q 1, if bus power supply phase
Sequence is consistent with phase sequence relay KHP, and phase sequence relay KHP starts, its normally opened contact closure, and the correct indicator lamp H2 lamps of phase sequence are bright；
If bus power phase and phase sequence relay KHP are inconsistent, phase sequence relay KHP does not start, and its normally-closed contact remains closed,
Phase sequence mistake indicating circuit obtains electric, and phase sequence mistake indicator lamp H3 lamps are bright, while trip circuit obtains electric, and circuit breaker Q 1 can not close a floodgate,
Now, change phase sequence relay KHP three-phases inlet wire is extremely consistent with bus power phase, and the correct indicator lamp H2 lamps of phase sequence are bright, debugging
Finish.
External power accesses：
1. checking that the powered indicator lamp H1 of bus does not work, circuit breaker Q 1 is in " separating brake " position；
2. generator（Car）Cable accessing port X1 is inserted Deng external power cable, starts generator（Car）External power is sent into, such as
Fruit external power phase sequence is consistent with phase sequence relay KHP, and phase sequence relay KHP starts, and its normally opened contact closure, phase sequence correctly indicates
Lamp H2 lamps are bright, and it is bright to low-voltage power supply system power transmission, the powered indicator lamp H1 of bus to close circuit breaker Q 1；If external power phase sequence and phase
Sequence relay KHP is inconsistent, and phase sequence relay KHP does not start, and its normally-closed contact remains closed, phase sequence mistake indicator lamp H3 lamps
Bright, the tripping coil of circuit breaker Q 1 obtains electric, and circuit breaker Q 1 can not close a floodgate, change external power phase sequence to phase sequence relay KHP three-phases
Phase sequence is consistent, and the correct indicator lamp H2 lamps of phase sequence are bright.Circuit breaker Q 1 is closed to low-voltage power supply system power transmission, the powered indicator lamp H1 of bus
It is bright.
In the present embodiment, cable accessing port X is 380 volts of three-phase four-wire system aviation plugs.
Embodiment 2
External power source access low-voltage power supply system device shown in Fig. 2, including primary circuit and secondary circuit, primary circuit
Connected and formed by circuit breaker Q 1 and cable accessing port X, phase sequence relay is connected between circuit breaker Q 1 and cable accessing port X
KPH；The normally opened contact of secondary circuit including the phase sequence relay KPH phase sequence to be formed of being connected with the correct indicator lamp H2 of phase sequence correctly refers to
Show circuit, phase sequence relay KPH normally-closed contact and phase sequence mistake indicator lamp H3 are connected the phase sequence mistake indicating circuit to be formed, phase
Sequence relay KPH normally-closed contact and the tripping coil of circuit breaker Q 1 are connected the trip circuit to be formed；Phase line in primary circuit
The powered indicator lamp H1 of bus is connected between zero line.The present apparatus is arranged in low pressure feeder line screen.In the present embodiment, cable accessing port
X is four independent single-core plugs of 1000 volts and following voltage class.
Other principles are same as Example 1.
Claims (7)
1. a kind of external power source accesses low-voltage power supply system device, including primary circuit and secondary circuit, it is characterised in that：It is described
Primary circuit is by breaker（Q1）And cable accessing port（X）Series connection is formed, in the breaker（Q1）With the cable accessing port
（X）Between be connected with phase sequence relay（KPH）；The secondary circuit includes the phase sequence relay（KPH）Normally opened contact with
The correct indicator lamp of phase sequence（H2）The correct indicating circuit of phase sequence that series connection is formed, the phase sequence relay（KPH）Normally-closed contact and
Phase sequence mistake indicator lamp（H3）The phase sequence mistake indicating circuit that series connection is formed.
2. external power source according to claim 1 accesses low-voltage power supply system device, it is characterised in that：The secondary circuit
Also include the phase sequence relay（KPH）Normally-closed contact and the breaker（Q1）Tripping coil connect to be formed tripping operation electricity
Road.
3. external power source according to claim 1 or 2 accesses low-voltage power supply system device, it is characterised in that：The cable
Access port（X）For 380 volts of three-phase four-wire system aviation plugs.
4. external power source according to claim 1 or 2 accesses low-voltage power supply system device, it is characterised in that：The cable
Access port（X）For 1000 volts and four independent single-core plugs of following voltage class.
5. external power source according to claim 1 or 2 accesses low-voltage power supply system device, it is characterised in that：Described one
The powered indicator lamp of bus is connected between the phase line and zero line of minor loop（H1）.
6. external power source according to claim 3 accesses low-voltage power supply system device, it is characterised in that：Once returned described
The powered indicator lamp of bus is connected between the phase line and zero line on road（H1）.
7. external power source according to claim 4 accesses low-voltage power supply system device, it is characterised in that：Once returned described
The powered indicator lamp of bus is connected between the phase line and zero line on road（H1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720915967.1U CN207039285U (en) | 2017-07-26 | 2017-07-26 | External power source accesses low-voltage power supply system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720915967.1U CN207039285U (en) | 2017-07-26 | 2017-07-26 | External power source accesses low-voltage power supply system device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207039285U true CN207039285U (en) | 2018-02-23 |
Family
ID=61462727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720915967.1U Expired - Fee Related CN207039285U (en) | 2017-07-26 | 2017-07-26 | External power source accesses low-voltage power supply system device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207039285U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433118A (en) * | 2020-11-16 | 2021-03-02 | 国网山东省电力公司聊城供电公司 | 10kV medium-voltage power generation vehicle anti-misoperation simulation device and method |
| CN113541242A (en) * | 2021-06-24 | 2021-10-22 | 广西电网有限责任公司钦州供电局 | Storage battery pack open circuit monitoring and voltage loss compensation device |
-
2017
- 2017-07-26 CN CN201720915967.1U patent/CN207039285U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112433118A (en) * | 2020-11-16 | 2021-03-02 | 国网山东省电力公司聊城供电公司 | 10kV medium-voltage power generation vehicle anti-misoperation simulation device and method |
| CN112433118B (en) * | 2020-11-16 | 2022-07-01 | 国网山东省电力公司聊城供电公司 | Anti-misoperation simulation device and method for 10kV medium-voltage power generation vehicle |
| CN113541242A (en) * | 2021-06-24 | 2021-10-22 | 广西电网有限责任公司钦州供电局 | Storage battery pack open circuit monitoring and voltage loss compensation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 |