CN207164225U - DC power system feeder assembly fault isolation device - Google Patents
DC power system feeder assembly fault isolation device Download PDFInfo
- Publication number
- CN207164225U CN207164225U CN201721110424.9U CN201721110424U CN207164225U CN 207164225 U CN207164225 U CN 207164225U CN 201721110424 U CN201721110424 U CN 201721110424U CN 207164225 U CN207164225 U CN 207164225U
- Authority
- CN
- China
- Prior art keywords
- electrical equipment
- isolation
- module
- input
- power system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 74
- 238000012546 transfer Methods 0.000 claims abstract description 28
- 230000005611 electricity Effects 0.000 claims abstract description 11
- 238000004146 energy storage Methods 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses a kind of DC power system feeder assembly fault isolation device, purpose is, being capable of isolated fault loop in transformer station or power plant DC power system O＆M maintenance engineering, load not dead electricity can be made simultaneously, used technical scheme is：Including the input module being sequentially connected, isolation module and output module, input module includes the input terminal being sequentially connected and first protection electrical equipment/isolation electrical equipment, input terminal connects electric power loop, isolation module includes at least one isolated form electric energy transfer element, first protection electrical equipment/isolation electrical equipment is connected to the input of isolated form electric energy transfer element, output module includes second protection electrical equipment/isolation electrical equipment being sequentially connected and lead-out terminal, the output end of second protection electrical equipment/isolation electrical equipment connection isolated form electric energy transfer element, lead-out terminal is connected to DC loop to be isolated.
Description
Technical field
The utility model belongs to DC power system fortune inspection field, and in particular to a kind of DC power system feeder assembly event
Hinder isolating device.
Background technology
In transformer station or power plant, the power supply that meets of the DC power system as protection, control, do not allow typically to stop
Electricity, therefore, feeder assembly electrical equipment (such as direct current air switch, DC leakage flow sensor) concatenate in the loop, because
This, when said elements are being changed, safeguarded, general is difficult to accomplish to make loop not power off.Further, since the limitation of supervising device
Property, when DC power system produces ground connection, exchange is scurried into or two groups of direct currents mutually alter failure, it is impossible to fault branch is selected, at this
In the case of kind, operation maintenance personnel can be judged insignificant loop by " open line method ", that is, is broken the loop of doubtful generation failure, seen
Examine whether the system failure releases, prove that broken loop is fault loop if releasing, but for important protection,
Control loop does not allow then to break, and so as to cause, malfunction elimination difficulty is big, time length.Based on above-mentioned O＆M present situation, do not have also at present
There is a kind of technology to realize that the failure of DC power system feeder assembly is temporarily isolating, so as to determine whether that the system failure is returned
Road, while make load not dead electricity.
Utility model content
In order to solve the problems of the prior art, the utility model proposes one kind in transformer station or power plant dc source system
Unite in O＆M maintenance engineering, can isolated fault loop, while the DC power system feeder assembly of load not dead electricity can be made
Fault isolation device.
In order to realize the above object technical scheme is used by the utility model：Including be sequentially connected input module,
Isolation module and output module, input module include the input terminal being sequentially connected and first protection electrical equipment/isolation electrical equipment, input
Terminal connects electric power loop, and isolation module includes at least one isolated form electric energy transfer element, first protection electrical equipment/isolation electrical equipment
The input of isolated form electric energy transfer element is connected to, output module includes second protection electrical equipment/isolation electrical equipment being sequentially connected
And lead-out terminal, the output end of the second protection electrical equipment/isolation electrical equipment connection isolated form electric energy transfer element, lead-out terminal are connected to
DC loop to be isolated.
The isolated form electric energy transfer element is the DC/DC conversion equipments or AC/DC conversion equipments of input and output isolation.
Energy-storage travelling wave tube is provided with the isolated form electric energy transfer element, energy-storage travelling wave tube is connected with charging module.
The energy-storage travelling wave tube is battery or super capacitor.
The first protection electrical equipment/isolation electrical equipment is connected with input indicating member, the second protection electrical equipment/isolation electrical equipment connection
There is output indication unit.
The input indicating member and output indication unit are in indicator lamp, voltage measurement module and current measurement module
One or two.
It is described first protection electrical equipment/isolation electrical equipment and second protection electrical equipment/isolation electrical equipment be breaker, disconnecting switch or
Relay.
The input module, isolation module and output module are arranged in the cavity of closing.
The input terminal and lead-out terminal include at least two poles.
The electric power loop is DC loop or ac circuit.
Compared with prior art, the input terminal connection electric power loop of the utility model input module, the first protection electrical equipment/
Isolate electrical equipment and insulation blocking is carried out to input, isolation module includes at least one isolated form electric energy transfer element, can transmitted
Electric energy, colleague can realize that input and output connect DC loop to be isolated in isolation electrically, the lead-out terminal of output module,
Second protection electrical equipment/isolation electrical equipment carries out insulation blocking to output end, is examined in transformer station or power plant DC power system O＆M
Repair in engineering, using the utility model come isolated fault loop, while load not dead electricity can be made.
Further, isolated form electric energy transfer element of the present utility model uses the DC/DC conversion equipments of input and output isolation
Or AC/DC conversion equipments, energy-storage travelling wave tube is provided with isolated form electric energy transfer element, and energy-storage travelling wave tube is battery or super electricity
Hold, energy storage member is connected with charging module, DC loop to be isolated is powered using energy-storage travelling wave tube, further ensures this
The reliability of utility model.
Further, the state of input and output end is shown using indicating member and output indication unit is inputted, be easy to
Working condition of the present utility model is understood in time.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the technical schematic diagram of embodiment one；
Fig. 3 is the technical schematic diagram of embodiment two；
Fig. 4 is the technical schematic diagram of embodiment three；
Wherein, 1- input modules, 2- isolation modules, 3- output modules, 4- cavitys, 11- input terminals, 12- first are protected
Electrical equipment/isolation electrical equipment, 13- input indicating member, 21- isolated form electric energy transfer element, 22- energy-storage travelling wave tubes, 31- lead-out terminals,
32- second protects electrical equipment/isolation electrical equipment, 33- output indication units.
Embodiment
With reference to specific embodiment and Figure of description the utility model is further explained explanation.
Referring to Fig. 1, the utility model includes input module 1, isolation module 2 and the output module 3 being sequentially connected, and inputs mould
Block 1, isolation module 2 and output module 3 are arranged in the cavity 4 of closing；Input module 1 includes the input terminal being sequentially connected
11st, first protection electrical equipment/isolation electrical equipment 12 and input indicating member 13；Isolation module 2 can transmit electric energy including at least one,
And input and output are in the isolated form electric energy transfer element 21 being electrically isolated；Output module 3 includes the lead-out terminal being sequentially connected
31st, the second protection electrical equipment and/or isolation electrical equipment 32 and output indication unit 33, input terminal 11 connect electric power loop, isolation mode
Block 2 includes at least one isolated form electric energy transfer element 21, and first protection electrical equipment/isolation electrical equipment 12 is connected to isolated form electric energy biography
The input of defeated element 21, the second protection electrical equipment/isolation electrical equipment 32 connect the output end of isolated form electric energy transfer element 21, output
Terminal 31 is connected to DC loop to be isolated.
The input terminal 11 of input module 1 comprises at least two poles, and each pole is mutually isolated, if input is direct current,
If setting two poles, two poles are respectively negative or positive electrode；If input is exchange, if setting two poles, one of pole is started to exchange fire
Line, another pole connecting to neutral line, or two poles connect two live wires；First protection electrical equipment/isolation electrical equipment 12, which is one, to be realized
Closure or the electrical equipment disconnected, can be breaker, disconnecting switch or relay；Input indicating member 13 is can to indicate to input shape
The element and/or module of state, an indicator lamp or voltage measurement module can be included, can also be current measurement mould
Block, or the combination of above two element or module.
Isolation module 2 includes that electric energy can be transmitted, and input and output are in the isolated form electric energy transfer element being electrically isolated
21, can be the DC/DC conversion equipments of input and output isolation or the AC/DC conversion equipments of input and output isolation；Isolation
Module 2 can also set one group of energy-storage travelling wave tube 22, such as battery or super capacitor, if setting battery or super capacitor,
It must be provided with charging module to charge for it, charging module can be placed in inside the cavity 4 of closing, can also be placed in outside it.
The input terminal 31 of output module 3 comprises at least two poles, and each pole is mutually isolated, using two poles,
Two poles are respectively negative or positive electrode；Second protection electrical equipment/isolation electrical equipment 32 is one and closes or disconnect with that can realize
Electrical equipment, can be breaker or disconnecting switch or relay；Output indication unit 33 can indicate input state
Element and/or module, an indicator lamp or voltage measurement module can be included, can also be current measurement module, or
The combination of person's above two element or module.
The cavity 4 of closing can be cabinet/tool box of metal shell or cabinet/tool box of plastic casing.
Embodiment one：Referring to Fig. 2, isolated form electric energy transfer element 21 realizes failure using isolated form DC/DC conversion equipments
The isolation in loop, input terminal 11 connect standby DC loop, include two poles of positive pole and negative pole；First protection electrical equipment/isolation
Electrical equipment 12 is the device for switching that can connect input terminal 11 and isolated form electric energy transfer element 21, can be with defencive function
Breaker or the disconnecting switch without defencive function or the outside relay controlled；Input indicating member 13
, can be with letter comprising an a voltmeter V and/or ammeter A or measurement voltage and/or the module for measuring electric current
Single one load indicator lamp instruction of use, when first protection electrical equipment/isolation electrical equipment 12 closes so that isolated form electric energy transfer element
21 inputs obtain it is electric after, input 13 stateful change of indicating member, for the prompting to user；Isolated form electric energy transfer element 21
It is that an input and output are mutually isolated, the device of electric energy transmission can be done, the present embodiment uses DC/DC devices, general to use
Power electronics realize, because the voltage of the same straight-flow system of transformer station or power plant is basically identical, therefore, DC/DC devices it is defeated
Voltage is basically identical depending on entering output；After the output of DC/DC devices, an output indication unit 33 can be set, include an electricity
Table V and/or an ammeter A or measurement voltage and/or the module for measuring electric current are pressed, can also be simply with one
Load indicator lamp instruction, when DC/DC devices export so that output end obtain it is electric after, the 33 stateful change of output indication unit, be used for
Prompting to user；Second protection electrical equipment/isolation electrical equipment is that can connect input terminal 31 and the device for switching of isolating device 21,
Can be the breaker with defencive function or without defencive function disconnecting switch or outside control after
Electrical equipment；Lead-out terminal 31 includes two poles of positive pole and negative pole, for connecting DC loop to be isolated.
Embodiment two：Referring to Fig. 3, the present embodiment realizes the isolation of fault loop using isolated form AC/DC modular converters.It is defeated
Enter terminal 11 and connect standby ac circuit, if single phase ac loop, comprising L poles and the pole of N poles two, if three-phase alternating current
Loop, then comprising A poles, B poles and C poles；First protection electrical equipment/isolation electrical equipment 12 is electric for that can connect input terminal 11 and isolated form
The device for switching of energy transfer element 21, can be the breaker with defencive function or keeping apart without defencive function
Pass or the relay of outside control；Input indicating member 13 includes an a voltmeter V and/or ammeter A,
It can be the module for measuring voltage and/or measuring electric current, simply can also be indicated with a load indicator lamp, when the first protection
Electrical equipment/isolation electrical equipment 12 closes so that the input of isolated form electric energy transfer element 21 obtain it is electric after, input indicating member 13 it is stateful
Change, for the prompting to user, different from embodiment one, input indicating member wants the voltage and/or electricity of energy test cross stream
Stream；Isolated form electric energy transfer element 21 is that an input and output are mutually isolated, can do the device of electric energy transmission, the present embodiment
Using AC/DC devices, typically realized using power electronics；After the output of AC/DC devices, an output indication unit can be set
33, can be with comprising an a voltmeter V and/or ammeter A or measurement voltage and/or the module for measuring electric current
It is simple to be indicated with a load indicator lamp, when the output of AC/DC devices so that output end obtain it is electric after, output indication unit 33 has
State change, for the prompting to user, different from embodiment one, output indication unit will can test cross stream voltage and/
Or electric current；Second protection electrical equipment/isolation electrical equipment 32 is that can connect opening for input terminal 31 and isolated form electric energy transfer element 21
Powered-down device, can be the breaker with defencive function or the disconnecting switch without defencive function or outside control
The relay of system；Lead-out terminal 31 includes two poles of positive pole and negative pole, for connecting DC loop to be isolated.
Embodiment three：Referring to Fig. 4, the present embodiment is powered using energy-storage travelling wave tube 22 to DC loop to be isolated, energy storage member
Part 22 can be battery or super capacitor, and energy-storage travelling wave tube need to set at least one charging circuit, can give energy storage member
Part supplements energy.
In transformer station or power plant DC power system O＆M maintenance engineering, returned using the utility model come isolated fault
Road, while load not dead electricity can be made, the repair and replacement to fault loop are facilitated, and ensure that loop does not power off, do not influence
The normal work of DC power system.
Claims (10)
1. DC power system feeder assembly fault isolation device, it is characterised in that including be sequentially connected input module (1),
Isolation module (2) and output module (3), input module (1) include the input terminal (11) that is sequentially connected and first protect electrical equipment/
Isolate electrical equipment (12), input terminal (11) connection electric power loop, isolation module (2) includes at least one isolated form electric energy transmission unit
Part (21), first protection electrical equipment/isolation electrical equipment (12) are connected to the input of isolated form electric energy transfer element (21), output module
(3) the second protection electrical equipment/isolation electrical equipment (32) and lead-out terminal (31) being sequentially connected, the second protection electrical equipment/isolation electricity are included
The output end of device (32) connection isolated form electric energy transfer element (21), lead-out terminal (31) are connected to DC loop to be isolated.
2. DC power system feeder assembly fault isolation device according to claim 1, it is characterised in that the isolation
Type electric energy transfer element (21) is the DC/DC conversion equipments or AC/DC conversion equipments of input and output isolation.
3. DC power system feeder assembly fault isolation device according to claim 2, it is characterised in that the isolation
Energy-storage travelling wave tube (22) is provided with type electric energy transfer element (21), energy-storage travelling wave tube (22) is connected with charging module.
4. DC power system feeder assembly fault isolation device according to claim 3, it is characterised in that the energy storage
Element (22) is battery or super capacitor.
5. DC power system feeder assembly fault isolation device according to claim 1, it is characterised in that described first
Protection electrical equipment/isolation electrical equipment (12) is connected with input indicating member (13), and second protection electrical equipment/isolation electrical equipment (32) is connected with defeated
Go out indicating member (33).
6. DC power system feeder assembly fault isolation device according to claim 5, it is characterised in that the input
Indicating member (13) and output indication unit (33) be one kind in indicator lamp, voltage measurement module and current measurement module or
Two kinds.
7. DC power system feeder assembly fault isolation device according to claim 1, it is characterised in that described first
It is breaker, disconnecting switch or relay to protect electrical equipment/isolation electrical equipment (12) and second protection electrical equipment/isolation electrical equipment (32).
8. DC power system feeder assembly fault isolation device according to claim 1, it is characterised in that the input
Module (1), isolation module (2) and output module (3) are arranged in the cavity (4) of closing.
9. DC power system feeder assembly fault isolation device according to claim 1, it is characterised in that the input
Terminal (11) and lead-out terminal (31) include at least two poles.
10. DC power system feeder assembly fault isolation device according to claim 1, it is characterised in that the electricity
Resource loop is DC loop or ac circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721110424.9U CN207164225U (en) | 2017-08-31 | 2017-08-31 | DC power system feeder assembly fault isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721110424.9U CN207164225U (en) | 2017-08-31 | 2017-08-31 | DC power system feeder assembly fault isolation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207164225U true CN207164225U (en) | 2018-03-30 |
Family
ID=61719967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721110424.9U Active CN207164225U (en) | 2017-08-31 | 2017-08-31 | DC power system feeder assembly fault isolation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207164225U (en) |
-
2017
- 2017-08-31 CN CN201721110424.9U patent/CN207164225U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103487678B (en) | A kind of portable power module test macro and test method | |
| CN202004479U (en) | Discharging device of single-group storage battery of DC system | |
| CN104979894A (en) | RMU uninterrupted power supply load transfer method | |
| CN103419643A (en) | High voltage distribution control method and high voltage distribution control device | |
| CN202602134U (en) | Portable DC system load transfer auxiliary tank | |
| CN111579897B (en) | Experimental platform for evaluating performance of power distribution and utilization system of full-direct-current building | |
| CN208571394U (en) | A kind of photovoltaic power generation box-type substation based on intelligent controller | |
| CN109274182A (en) | The long-range integrated monitoring platform of DC power supply | |
| CN107086537B (en) | Prevent the disconnecting device and cutting-off method of the debugging primary equipment electrification of substation's relay protection | |
| CN102074994B (en) | Charging device of direct-current (DC) system | |
| Monadi et al. | Implementation of the differential protection for MVDC distribution systems using real-time simulation and hardware-in-the-loop | |
| CN207939072U (en) | A kind of high voltage switch cabinet electricity check trolley | |
| CN206451954U (en) | A kind of mobile DC power supply is transferred screen temporarily | |
| CN203444008U (en) | High-voltage charge display locking device | |
| CN207164225U (en) | DC power system feeder assembly fault isolation device | |
| CN110942692B (en) | Intelligent debugging and training system and method for auxiliary power supply of urban railway passenger car | |
| CN109324306B (en) | GIS equipment current transformer error testing system and construction method thereof | |
| CN207010200U (en) | Prevent the powered shearing device of transformer station's relay protection debugging primary equipment | |
| CN204012651U (en) | A kind of direct current leakage protection circuit | |
| CN108321788B (en) | Power switching device and power supply and distribution system | |
| CN203543694U (en) | High voltage power distribution control device | |
| CN2930032Y (en) | Novel high voltage switch cabinet | |
| CN202949204U (en) | Intelligent fault detecting and elimination system of circuit breaker | |
| CN207601193U (en) | It is a kind of from mutual nuclear phase display device | |
| CN111443281B (en) | Electrical blocking device and circuit breaker or isolating switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |