CN209167451U - One kind not powering off DC earthing detection device - Google Patents
One kind not powering off DC earthing detection device Download PDFInfo
- Publication number
- CN209167451U CN209167451U CN201821676752.XU CN201821676752U CN209167451U CN 209167451 U CN209167451 U CN 209167451U CN 201821676752 U CN201821676752 U CN 201821676752U CN 209167451 U CN209167451 U CN 209167451U
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- relay
- normally
- closed contact
- coil
- direct current
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- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 238000011982 device technology Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 13
- 230000005611 electricity Effects 0.000 description 6
- 238000013024 troubleshooting Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Abstract
The utility model one kind does not power off DC earthing detection device, belongs to and does not power off DC earthing detection device technology field；Technical problem to be solved are as follows: one kind is provided and does not power off DC earthing detection device；Solve the technical solution of technical problem use are as follows: be spaced apart including direct current, rectifier, relay J1, J2；The coil of the relay J1 is J1.1, and the normally-closed contact of the relay J1 is J1.2；The coil of the relay J2 is J2.1, and the normally-closed contact of the relay J2 is J2.2；The DC supply input that direct current is spaced apart is arranged in the normally-closed contact J1.2, and the output end that direct current is spaced apart is arranged in the relay coil J2.1；The ac power input end of rectifier is arranged in the relay coil J1.1, and the output end of rectifier is arranged in the normally-closed contact J2.2；The output end of the relay coil J2.1 is simultaneously connected after connecing the output end of normally-closed contact J2.2 with direct-flow current consumer；The utility model installation is applied to substation secondary public direct-current system.
Description
Technical field
The utility model one kind does not power off DC earthing detection device, belongs to and does not power off DC earthing detection device technology neck
Domain.
Background technique
Common secondary public direct-current power-supply system is arranged in bus type in substation, so that electrical secondary system direct current occurs and connects
When ground problem, it is often necessary to " open line method " be used to be checked；But it when use " open line method " is checked, will lead to
The road DC supply interruption, protective device, control loop, remote signalling circuit in the road Jie Gai etc. occur straight in troubleshooting procedure
Stream disappear the phenomenon that, i.e., in the interval of the road troubleshooting procedure Zhong Jianggai direct current supply occur " unprotect operation ", " control loop break
The problems such as line "；If occurring short trouble in troubleshooting procedure, it will occur " relay fail ", " switch failure ", " without any
The generation of the matters of aggravation such as protection information feedback " and " failure propagation "；It is therefore necessary to existing DC earthing detection device
It improves.
Utility model content
The utility model is in order to overcome the deficiencies in the prior art, technical problem to be solved are as follows: provide one kind
DC earthing detection device is not powered off；In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model are as follows: one kind is not
DC earthing detection device is powered off, including direct current is spaced apart, rectifier, relay J1, J2；
The coil of the relay J1 is J1.1, and the normally-closed contact of the relay J1 is J1.2；
The coil of the relay J2 is J2.1, and the normally-closed contact of the relay J2 is J2.2；
The DC supply input that direct current is spaced apart, the relay coil J2.1 setting is arranged in the normally-closed contact J1.2
In the output end that direct current is spaced apart；
The ac power input end of rectifier is arranged in the relay coil J1.1, and the normally-closed contact J2.2 setting exists
The output end of rectifier；
The output end of the relay coil J2.1 is simultaneously connected after connecing the output end of normally-closed contact J2.2 with direct-flow current consumer.
The signal feedback end of the relay J1 and relay J2 is connected with monitoring computer.
What the utility model had compared with the existing technology has the beneficial effect that the utility model passes through in branch electrical equipment
With direct current be spaced apart between and connect the mode of rectifier, when carrying out DC earthing detection to electrical secondary system using open line method, effectively
DC supply interruption is avoided, dc switch tripping is caused, no feedback information reduces failure；The rectifier of installation can incite somebody to action
The power supply of ac circuit is converted to DC power supply through over commutation, is direct current electricity consumption branch continued power, the function switch is by relay
Device and contact are completed；The utility model structure is simple, and powered stable, function switch is accurate, can effectively reduce current supply circuit power loss
Incidence can be promoted the use of.
Detailed description of the invention
The utility model is described further with reference to the accompanying drawing:
Fig. 1 is the electrical block diagram of the utility model；
In figure: 1 is that direct current is spaced apart, 2 be rectifier.
Specific embodiment
As shown in Figure 1, the utility model one kind does not power off DC earthing detection device, including direct current be spaced apart 1, rectifier 2,
Relay J1, J2；
The coil of the relay J1 is J1.1, and the normally-closed contact of the relay J1 is J1.2；
The coil of the relay J2 is J2.1, and the normally-closed contact of the relay J2 is J2.2；
The DC supply input that direct current is spaced apart 1 is arranged in the normally-closed contact J1.2, and the relay coil J2.1 is set
It sets and is spaced apart 1 output end in direct current；
The ac power input end of rectifier 2, the normally-closed contact J2.2 setting is arranged in the relay coil J1.1
In the output end of rectifier 2；
The output end of the relay coil J2.1 is simultaneously connected after connecing the output end of normally-closed contact J2.2 with direct-flow current consumer.
The signal feedback end of the relay J1 and relay J2 is connected with monitoring computer.
The utility model installation is applied to the secondary circuit with electric system such as electric system, railway system；Using normal
" open line method " DC earthing of rule checks method, will cause junior's direct current system is powered in troubleshooting procedure device power loss, circuit
The problems such as power loss, easily causes the generation of the accidents such as relay fail, switch failure；The utility model may be implemented not power off progress
The method of DC earthing investigation shortens the power-off time of DC loop in the process of running, when reducing the unprotect operation in circuit
Between, and the stable operation of secondary public direct-current system can be reinforced, it is horizontal effectively to promote substation secondary O&M.
The utility model can find suitable second electricity for junior's direct current system of substation secondary public direct-current system
Source provides continual and steady electric power for junior's direct current system to realize the seamless switching of DC power supply during " drawing road "
Supply；When specifically used, the utility model carries out rectification using AC power source in standing and switches out DC power supply, and rectifier is installed
It is spaced apart between electricity consumption branch in direct current, and designs the connection of a kind of while " cutting off former DC power supply " " investment second source "
Dynamic switch.
The design requirement of the linked switch is spaced apart in direct current installs relay and movement contact with the both ends of rectifier；Having
Body in use, relay coil J2.1 on DC loop persistently it is electric so that its normally-closed contact J2.2 is in an off state, make
The rectifier obtained on ac circuit is in off state, due to that cannot be formed into a loop, is mounted on the relay of rectifier input
Coil J1.1 continues power loss, so that its normally-closed contact J1.2 is persistently closed, guarantees to protect between direct current electricity consumption branch and DC power supply
Hold connection；When using open line method detection DC earthing situation, direct current is spaced apart possible disconnection, causes DC loop to disconnect, at this time
Relay coil J2.1 power loss, and its normally-closed contact J2.2 closure is controlled, the ac circuit of detection device is connected, at this time relay
Coil J1.1 obtain it is electric, control its normally-closed contact J1.2 disconnection, further disconnect DC loop, when ac circuit connect when, rectification
Device can export the 220V alternating current of input for 220V direct current through over commutation, continue as direct current electricity consumption branch and provide direct current
Source.
Equipment is checked using the utility model, it is ensured that lower system normal power supply and direct current system are between the superior and the subordinate
Connection without electricity, it is convenient that DC earthing problem is fast and accurately checked；It is arranged using the DC earthing that do not power off of the utility model
The constant current source not powered off can be provided by looking into equipment, and on the basis of not powering off, and Zhan Nei the superior and the subordinate direct current can also be isolated
The zero potential position of system, if DC earthing problem is located in the branch, higher level's direct current system will restore normal；For convenience of to control
The monitoring of switch is made, the relay used is specially signal relay, and the signal feedback end of signal relay can move relay
Make and the data unified feedbacks such as electriferous state to monitoring computer carries out monitoring management, facilitates and staff is notified to exclude in time directly
Flow back to the power loss hidden danger on road.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (2)
1. one kind does not power off DC earthing detection device, it is characterised in that: be spaced apart (1), rectifier (2), relay including direct current
J1,J2；
The coil of the relay J1 is J1.1, and the normally-closed contact of the relay J1 is J1.2；
The coil of the relay J2 is J2.1, and the normally-closed contact of the relay J2 is J2.2；
The normally-closed contact J1.2 setting is spaced apart the DC supply input of (1), the relay coil J2.1 setting in direct current
It is spaced apart the output end of (1) in direct current；
In the ac power input end of rectifier (2), the normally-closed contact J2.2, which is arranged, to exist for the relay coil J1.1 setting
The output end of rectifier (2)；
The output end of the relay coil J2.1 is simultaneously connected after connecing the output end of normally-closed contact J2.2 with direct-flow current consumer.
2. one kind according to claim 1 does not power off DC earthing detection device, it is characterised in that: the relay J1 and
The signal feedback end of relay J2 is connected with monitoring computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821676752.XU CN209167451U (en) | 2018-10-16 | 2018-10-16 | One kind not powering off DC earthing detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821676752.XU CN209167451U (en) | 2018-10-16 | 2018-10-16 | One kind not powering off DC earthing detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209167451U true CN209167451U (en) | 2019-07-26 |
Family
ID=67333894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821676752.XU Active CN209167451U (en) | 2018-10-16 | 2018-10-16 | One kind not powering off DC earthing detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209167451U (en) |
-
2018
- 2018-10-16 CN CN201821676752.XU patent/CN209167451U/en active Active
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