CN204330898U - A kind of bypass mobile box substation emergency repair vehicle low pressure kernel phase system - Google Patents
A kind of bypass mobile box substation emergency repair vehicle low pressure kernel phase system Download PDFInfo
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- CN204330898U CN204330898U CN201420745991.1U CN201420745991U CN204330898U CN 204330898 U CN204330898 U CN 204330898U CN 201420745991 U CN201420745991 U CN 201420745991U CN 204330898 U CN204330898 U CN 204330898U
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Abstract
The utility model provides a kind of bypass mobile box substation emergency repair vehicle low pressure kernel phase system, and a kind of bypass mobile box substation emergency repair vehicle low pressure kernel phase system, it comprises low pressure master control switch, the first and second outlet switchs, low pressure phase checking device and three-phase separate knife-like switch.Low pressure phase checking device, realizes according to current balance type principle.Intelligent controller and a mechanical interlocking device is also had between first outgoing line part of described three-phase separate knife-like switch and the second outgoing line part.System realizes simple loop switch by three-pole switch, and successively sending signal enters automatic phase checking device, by phase checking device, phase sequence is judged again, avoid the risk that the direct contact electrification busbar of people carries out nuclear phase, phase checking device display simultaneously obviously, can according to display adjustment primary connection loop rapidly.
Description
Technical field
The utility model relates to electric power electric construction field, particularly a kind of bypass mobile box substation emergency repair vehicle low pressure (380V) kernel phase system.
Background technology
The component devices such as the overground cable of distribution network system and gold utensil, often need carry out a large amount of maintenance every year; At present, such overhaul of the equipments mainly adopts the mode of interruption maintenance, and the raising required power supply reliability along with social development carries out overhaul of the equipments construction under proof load not power-off condition, become a kind of power distribution network maintenance operation in the urgent need to.
At present, using diesel-oil electric generator wagon as temporary source to the method that terminal user powers, once applied by trial in some upkeep operations, but; The shortcomings such as the power that this way exists is little, noise is large, air pollution is large, limiting it applies; And bypass hot line job method, overcome above-mentioned shortcoming, be widely applied.Bypass hot line job ultimate principle: at normal overground cable tip side parallel connection access bypass cable, substitute overground cable by bypass cable to power temporarily, thus under the condition that uninterrupted power supply is carried out to user, realize changing or maintenance overground cable and not having a power failure of annex thereof, recover former overground cable normal power supply after completing maintenance again and remove receipts bypass cable.
China's distribution overground cable adopts three-phase three-wire system, and generally often distance about 300m arranges place's tension force shaft tower and a breakpoint of cable, so that cable tensioning and examine and replace; Therefore, change or maintenance 1 section of overground cable, need bypass cable total length to be about more than 900m (general disjunction is every root 50m, adopts cable reel storage, so that construction is transported and launched to operate).The equipment of bypass hot line job process need, mainly comprises aerial lift device with insulated arm, bypass cable, cable accessory, on-load switch and switch bracket, supporting and tightener, insulate operation and safety appliance etc.
Can realizing by bypath system and load transfer plan car the replacing substation transformer that do not have a power failure, providing emergency power pack for faulty line or for protecting power supply.But, this car does not configure position display and the nuclear phase function of low voltage three-phase power phase at present, can only at low-tension distribution box or low-pressure line-outgoing disconnecting link place Check Phase Sequence manually when job execution, once phase sequence is to must adjusting and again checking, there is human time's wasting of resources during operation, and have the operational risk of reconfiguration primary connection repeatedly concurrently.
Utility model content
For the above technical matters existed, the utility model provides the device that can realize the automatic nuclear phase of low pressure in a kind of bypass load transfer plan car.By development low pressure nuclear phase instrument and wiring group reconfiguration, at the automatic nuclear phase in bypass load transfer plan car low-voltage busbar place, bypass load transfer plan car is made to have automatic nuclear phase and the function of fast speed adjustment phase sequence.
A kind of bypass mobile box substation emergency repair vehicle low pressure kernel phase system, it comprises low pressure master control switch, the first and second outlet switchs and low pressure phase checking device; Wherein, three three line input ends of low pressure master control switch are connected with transformer low voltage outgoing line side, and its output terminal is connected with three three line input ends of the first and second outlet switchs and the one or three three line input ends of low pressure phase checking device respectively; The output terminal of the first and second outlet switchs is connected with the two or three three line input ends of low pressure phase checking device; Low pressure phase checking device also comprises two ground terminals; The output terminal of the first and second outlet switchs is also connected to the first and second low voltage outlet terminals respectively.
Preferably, in low pressure phase checking device, the wherein line connecting resistance R in the one or three three line input ends
a, r
a, ground connection after adjustable resistance r; A wherein line connecting resistance R in two or three three line input ends
a', r
a', ground connection after adjustable resistance r ', at resistance R
awith R
a' after reometer G is set.
Preferably, nuclear phase instrument module also includes light emitting diode, according to the current values of reometer, shows.
Preferably, system neutral road is and carries out the circuit wrapped up that insulate.
A kind of bypass mobile box substation emergency repair vehicle low pressure kernel phase system, it comprises low pressure master control switch, the first and second outlet switchs, low pressure phase checking device and three-phase separate knife-like switch; Wherein, three three line input ends of low pressure master control switch are connected with transformer low voltage outgoing line side, and its output terminal is connected with three three line input ends of the first and second outlet switchs and the one or three three line input ends of low pressure phase checking device respectively; The output terminal of the first and second outlet switchs is input to the first outgoing line part of three-phase separate knife-like switch and three three line input ends of the second outgoing line part respectively, the two or three three line input ends of the first outgoing line part of three-phase separate knife-like switch and the output terminal access low pressure phase checking device of the second outgoing line part; Low pressure phase checking device also comprises two ground terminals; The output terminal of the first and second outlet switchs is also connected to the first and second low voltage outlet terminals respectively.
Preferably, intelligent controller and mechanical interlocking device is also had between the first outgoing line part of described three-phase separate knife-like switch and the second outgoing line part.
Preferably, in low pressure phase checking device, the wherein line connecting resistance R in the one or three three line input ends
a, r
a, ground connection after adjustable resistance r; A wherein line connecting resistance R in two or three three line input ends
a', r
a', ground connection after adjustable resistance r ', at resistance R
awith R
a' after reometer G is set.
Preferably, nuclear phase instrument module also includes light emitting diode, according to the current values of reometer, shows.
Preferably, system neutral road is and carries out the circuit wrapped up that insulate.
In the utility model, in the low tension loop of bypass mobile box substation emergency repair vehicle, low pressure phase checking device, three-cutter type separating switch are set up; Transform wiring group, will redistribute into and out of line side line road, and carried out insulating parcel, ensure that the risk of not burning phase checking device because insulation breakdown causes short circuit; According to newly added equipment attribute, nuclear phase operation concrete steps and code are formulated.System realizes simple loop switch by three-pole switch, and successively sending signal enters automatic phase checking device, by phase checking device, phase sequence is judged again, avoid the risk that the direct contact electrification busbar of people carries out nuclear phase, phase checking device display simultaneously obviously, according to display adjustment primary connection loop rapidly, can save manpower and time, avoid the waste of resource, ensure that safety in production.
Accompanying drawing explanation
Fig. 1 is the wiring diagram of bypass mobile box substation emergency repair vehicle in prior art;
Fig. 2 is the wiring diagram of this novel middle bypass mobile box substation emergency repair vehicle;
Fig. 3 be this novel in add the wiring diagram of three-phase separate knife-like switch;
Fig. 4 is the schematic diagram of this novel nuclear phase principle of device;
Fig. 5 is the structural drawing that this Three phase divides knife-like switch.
Embodiment
In order to make the technological means of this novel realization, creation characteristic, reach object and effect is easy to understand, below in conjunction with concrete accompanying drawing, structural principle of the present invention and principle of work be described in further details:
Embodiment one:
As shown in Figure of description 1, in prior art, the phase three-wire three (A, B, C) of the low-pressure line-outgoing side of bypass mobile box substation emergency repair vehicle is linked into low pressure master control switch, the output terminal of low pressure master control switch is linked into left side low-pressure line-outgoing switch and right side outlet switch respectively, left side low-pressure line-outgoing switch (a1, b1, c1) export left side low voltage outlet terminals to, right side low-pressure line-outgoing switch (a2, b2, c2) export right side low voltage outlet terminals to.Can only at low-tension distribution box or low-pressure line-outgoing disconnecting link place Check Phase Sequence manually when operation, once phase sequence is to must adjusting and again checking.
In order to overcome the problems referred to above, use the device as shown in instructions Fig. 2.The phase three-wire three (A, B, C) of the low-pressure line-outgoing side of bypass mobile box substation emergency repair vehicle is linked into low pressure master control switch, and the output terminal of low pressure master control switch is linked into three input ends of left side low-pressure line-outgoing switch and right side outlet switch and low pressure phase checking device respectively
the output terminal (a1, b1, c1) of left side low-pressure line-outgoing switch and the output terminal (a2 of right side low-pressure line-outgoing switch, b2, c2) be connected to input end (a1a2, the b1b2 of low pressure nuclear phase switch respectively, c1c2) and left/right low voltage outlet terminals; Remainder two the end ground connection of low pressure phase checking device.
The principle of low pressure nuclear phase is realized referring to the above-mentioned improvement of Figure of description 4 instructions.A, B, C and A ', B ', C ' be respectively the phase three-wire three treating nuclear phase, A line, voltage between A ' line and ground be UA, UA ', A line connecting resistance R
a, r
a, ground connection after adjustable resistance r, A ' line connecting resistance R
a', r
a', ground connection after adjustable resistance r ', the two branch roads stream that powers on is respectively i
gand i
a, at resistance R
awith R
a' after reometer G is set, on it, electric current Ig represents.According to broad sense alternating current bridge principle, when UA=UA ' time, by regulating r and r ' can make bridge balance, i.e. Ig=0, now, tested two ends electricity terminal voltage amplitude is identical with current potential.If both end voltage current potential is identical, and amplitude is not exclusively equal, regulate r and r ' still can make bridge balance, only have when two ends phase place is not identical, regulate r and r ' that bridge balance and Ig=0 can not be made, now tested both end voltage is out of phase, and nuclear phase instrument module, by judging phase place " whether Ig is 0 ", is then shown in equipment surface by light emitting diode.
In addition, will redistribute into and out of line side line road, and carry out insulating parcel, ensure that the risk of not burning phase checking device because insulation breakdown causes short circuit.
Embodiment two:
The phase sequence that system shown by Figure of description 2 can only realize one of them low tension loop is checked, and it still has weak point.For solving the problem, can three-phase separate knife-like switch be set in systems in which, to realize the operation of low-pressure side separate type nuclear phase.
As shown in Figure of description 3, the phase three-wire three (A, B, C) of the low-pressure line-outgoing side of bypass mobile box substation emergency repair vehicle is linked into low pressure master control switch, and the output terminal of low pressure master control switch is linked into three input ends of left side low-pressure line-outgoing switch and right side outlet switch and low pressure phase checking device respectively.The output terminal (a1, b1, c1) of left side low-pressure line-outgoing switch is connected to the left side outgoing line part (a1, b1, c1) of left side low voltage outlet terminals and three-phase separate knife-like switch; The output terminal (a2, b2, c2) of right side low-pressure line-outgoing switch is connected to the left side outgoing line part (a2, b2, c2) of right side low voltage outlet terminals and three-phase separate knife-like switch; The leading-out terminal (a1a2, b1b2, c1c2) of low pressure phase checking device is connected with the connection terminal (a1, b1, c1) of outlet terminal (a2, b2, c2) and right side outlet on the left of three-phase separate knife-like switch respectively.
The structure of three-phase separate knife-like switch is as shown in Figure of description 5, and it comprises two parts, and each part has three three line input and output sides respectively, and switch is controlled by intelligent controller and mechanical interlocking device, realizes switching.System realizes simple loop switch by three-pole switch, and successively sending signal enters automatic phase checking device, by phase checking device, phase sequence is judged again, avoid the risk that the direct contact electrification busbar of people carries out nuclear phase, phase checking device display simultaneously obviously, can according to display adjustment primary connection loop rapidly.
This type three-phase separate knife-switch structure reasonable volume is small and exquisite, be furnished with protective cover, has short circuit, overload, phase shortage, under-voltagely waits defencive function, noiseless operation, and dependable performance is stablized.Before nuclear phase operation, controller switches is put " automatically " position, during nuclear phase, three-phase separate knife-like switch is monitored sinistral power and east power respectively and shows running status, switch panel is provided with light emitting diode indicator cock combined floodgate situation, by three-phase separate knife-like switch realize different circuit successively conveying signal enter phase checking device and carry out phase sequence and check.
The foregoing is only the preferred embodiment of the utility model patent, be not limited to this patent, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in the utility model patent.
Claims (9)
1. a bypass mobile box substation emergency repair vehicle low pressure kernel phase system, it comprises low pressure master control switch, the first and second outlet switchs and low pressure phase checking device; Wherein, three three line input ends of low pressure master control switch are connected with transformer low voltage outgoing line side, and its output terminal is connected with three three line input ends of the first and second outlet switchs and the one or three three line input ends of low pressure phase checking device respectively; The output terminal of the first and second outlet switchs is connected with the two or three three line input ends of low pressure phase checking device; Low pressure phase checking device also comprises two ground terminals; The output terminal of the first and second outlet switchs is also connected to the first and second low voltage outlet terminals respectively.
2. system according to claim 1, is characterized in that, in described low pressure phase checking device, and the wherein line connecting resistance R in the one or three three line input ends
a, r
a, ground connection after adjustable resistance r; A wherein line connecting resistance R in two or three three line input ends
a', r
a', ground connection after adjustable resistance r ', at resistance R
awith R
a' after reometer G is set.
3. system according to claim 2, is characterized in that, described system also includes light emitting diode, according to the current values of reometer, shows.
4. the system that one of claim 1-3 is described, is characterized in that system neutral road is and carries out the circuit wrapped up that insulate.
5. a bypass mobile box substation emergency repair vehicle low pressure kernel phase system, it comprises low pressure master control switch, the first and second outlet switchs, low pressure phase checking device and three-phase separate knife-like switch; Wherein, three three line input ends of low pressure master control switch are connected with transformer low voltage outgoing line side, and its output terminal is connected with three three line input ends of the first and second outlet switchs and the one or three three line input ends of low pressure phase checking device respectively; The output terminal of the first and second outlet switchs is input to the first outgoing line part of three-phase separate knife-like switch and three three line input ends of the second outgoing line part respectively, the two or three three line input ends of the first outgoing line part of three-phase separate knife-like switch and the output terminal access low pressure phase checking device of the second outgoing line part; Low pressure phase checking device also comprises two ground terminals; The output terminal of the first and second outlet switchs is also connected to the first and second low voltage outlet terminals respectively.
6. system according to claim 5, is characterized in that, also has intelligent controller and mechanical interlocking device between the first outgoing line part of described three-phase separate knife-like switch and the second outgoing line part.
7. system according to claim 5, is characterized in that, in described low pressure phase checking device, and the wherein line connecting resistance R in the one or three three line input ends
a, r
a, ground connection after adjustable resistance r; A wherein line connecting resistance R in two or three three line input ends
a', r
a', ground connection after adjustable resistance r ', at resistance R
awith R
a' after reometer G is set.
8. system according to claim 7, is characterized in that, system also includes light emitting diode, according to the current values of reometer G, shows.
9. the system that one of claim 5-8 is described, it is characterized in that, system also comprises shell and button, and system neutral road is carries out the circuit wrapped up that insulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420745991.1U CN204330898U (en) | 2014-12-01 | 2014-12-01 | A kind of bypass mobile box substation emergency repair vehicle low pressure kernel phase system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420745991.1U CN204330898U (en) | 2014-12-01 | 2014-12-01 | A kind of bypass mobile box substation emergency repair vehicle low pressure kernel phase system |
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| CN204330898U true CN204330898U (en) | 2015-05-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390872A (en) * | 2018-11-05 | 2019-02-26 | 国网浙江省电力有限公司杭州供电公司 | It is a kind of to be turned based on the moving load for bypassing Live line maintenance method for system |
| CN113162040A (en) * | 2021-04-29 | 2021-07-23 | 西安热工研究院有限公司 | System and method for non-pressure nuclear phase of high-voltage station power supply of power plant |
-
2014
- 2014-12-01 CN CN201420745991.1U patent/CN204330898U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390872A (en) * | 2018-11-05 | 2019-02-26 | 国网浙江省电力有限公司杭州供电公司 | It is a kind of to be turned based on the moving load for bypassing Live line maintenance method for system |
| CN113162040A (en) * | 2021-04-29 | 2021-07-23 | 西安热工研究院有限公司 | System and method for non-pressure nuclear phase of high-voltage station power supply of power plant |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |