CN212060444U - Distribution network automation debugging device - Google Patents
Distribution network automation debugging device Download PDFInfo
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- CN212060444U CN212060444U CN201922280061.9U CN201922280061U CN212060444U CN 212060444 U CN212060444 U CN 212060444U CN 201922280061 U CN201922280061 U CN 201922280061U CN 212060444 U CN212060444 U CN 212060444U
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Abstract
The utility model discloses an automatic debugging device for distribution network, which comprises a recloser with an input end connected with an alternating current power supply and an output end connected with an inlet wire of a 1# cable distribution box; the inlet wire of the 1# cable distribution box is connected with the inlet wire of the 1# protection device to form an input loop; the outgoing line of the 1# protection device is connected with the outgoing line of the 1# cable distribution box to form a setting loop, the outgoing line of the 1# cable distribution box is connected with the incoming line end of the 2# cable distribution box, and the incoming line of the 2# cable distribution box is connected with the incoming line of the 2# protection device to form an overcurrent loop; the outgoing line of the 2# cable distribution box is connected with an alternating current power supply, the outgoing line of the 2# cable distribution box is further connected with the outgoing line of the 2# protection device to form a fault loop, the adjustable load A is connected with the 1# cable distribution box to form a relay protection loop, and the adjustable load B is connected with the 2# cable distribution box to form a fault loop. The utility model discloses though the structure is simple and convenient, but can realize the automatic tactics debugging overall process of analog line all switch action circumstances.
Description
Technical Field
The utility model relates to a join in marriage net debugging technical field, in particular to join in marriage net automation debugging device.
Background
When the distribution network automation strategy is debugged, reclosing of the switch in the station is involved, and the line switches are respectively distributed and installed, so that the traditional relay protection debugging device can only debug the switch and cannot meet the field debugging requirement of completely simulating the strategy action. How to fully simulate the line running condition, such as faithfully reflecting the action condition of the switch after strategy starting, becomes a main problem of field debugging. For example, when a 10kV line runs normally, the 1# cable distribution box and the 2# cable distribution box are distributed in different places, and when the automation strategy is debugged on site, because of the limitation of regional distribution and relay protection debugging devices, the protection debugging can be performed only for the local cable control switch, and the current and voltage automation strategy of the whole feedback line cannot be debugged.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a distribution network automation debugging device aims at overcoming above problem.
In order to achieve the above object, the utility model provides a distribution network automation debugging device, including recloser, 1# cable distribution box, 2# cable distribution box, 1# protection device, 2# protection device, adjustable load A, adjustable load B, recloser input end connects alternating current power supply, and its output end connects 1# cable distribution box inlet wire end; the inlet wire end of the 1# cable distribution box is also connected with an inlet wire cabinet of the 1# protection device to form an input current acquisition loop and an input voltage acquisition loop; the 1# protection device outlet cabinet is connected with the 1# cable distribution box outlet end to form a setting current acquisition loop and a setting voltage acquisition loop, the 1# cable distribution box outlet end is connected with the 2# cable distribution box inlet end, and the 2# cable distribution box inlet end is connected with the 2# protection device inlet cabinet to form an overcurrent current acquisition loop and an overcurrent voltage acquisition loop; the outlet end of the 2# cable tapping box is connected with an alternating current power supply, the outlet end of the 2# cable tapping box is further connected with an outlet cabinet of a 2# protection device to form a fault current collection loop and a fault voltage collection loop, the adjustable load A is connected with the load end of the 1# cable tapping box to form a relay protection loop, and the adjustable load B is connected with the load end of the 2# cable tapping box to form a fault loop.
Preferably, the 1# cable distribution box comprises cable buses UA1, UB1, a current transformer L1, a voltage transformer J1, and a 1# incoming line switch group, wherein the 1# incoming line switch group comprises a 1# input current switch and a 1# input voltage switch, an alternating current power line IA1 output by the recloser passes through a current transformer L1 to be connected with an input end of the 1# current switch, and an output end of the 1# input current switch is connected with a line bus UA 1; alternating voltage UN1 that the coincidence ware is exported connects 1# input voltage switch's input, 1# input voltage switch's output connects cable bus UB1, be equipped with sampling point a between the connection of current transformer L1 and 1# input current switch's input, 1# input voltage switch's input is equipped with sampling point b, voltage transformer J1 gathers sampling point a, the voltage between b just connects 1# protection device inlet wire cabinet and forms the input voltage collection return circuit, 1# protection device inlet wire cabinet connects current transformer L1 and forms the input current collection return circuit.
Preferably, the 1# cable distribution box further includes a 1# load switch group, and the 1# load switch group is respectively disposed between the adjustable load a and the connections of the cable buses UA1 and UB1, and is used for controlling the communication of the relay protection circuit.
Preferably, the 1# cable distribution box further comprises a current transformer L2, a voltage transformer J2 and a 1# outgoing switch group, wherein the 1# outgoing switch group comprises a 1# setting current switch and a 1# setting voltage switch, the input end of the 1# setting current switch sequentially penetrates through the current transformer L2 and the current transformer L3 and then is connected with the inlet end of the 2# cable distribution box, and the output end of the 1# setting current switch is connected with a cable bus UA 1; the output end of the 1# setting voltage switch is connected with a cable bus UB1, a sampling point c is arranged between the input end of the 1# setting current switch and the connection of a current transformer L2, a sampling point d is arranged at the input end of the 1# setting voltage switch, a voltage transformer J2 is connected with the voltage between the sampling points c and d and is connected with a 1# protection device outgoing line cabinet to form a setting voltage acquisition loop, and the 1# protection device outgoing line cabinet is connected with a current transformer L21 to form a setting current acquisition loop.
Preferably, the 2# cable distribution box comprises cable buses UA2, UB2, a current transformer L3, a voltage transformer J3, and a 2# incoming line switch group, wherein the 2# incoming line switch group comprises a 2# overcurrent current switch and a 2# overcurrent voltage switch, an input end of the 1# outgoing line current switch sequentially passes through the current transformer L2 and the current transformer L3 and then is connected with an input end of the 2# overcurrent current switch, and an output end of the 2# overcurrent current switch is connected with the cable bus UA 2; the input end of the No. 2 overcurrent voltage switch is connected with the input end of the No. 1 setting voltage switch, the output end of the No. 2 voltage switch is connected with a cable bus UB2, a sampling point e is arranged between the connection of the input ends of the current transformer L3 and the No. 2 current switch, the input end of the No. 2 voltage switch is provided with a sampling point f, the voltage transformer J3 collects the voltage between the sampling point e and the sampling point f and is connected with the No. 2 protection device inlet cabinet to form an overcurrent voltage collection circuit, and the No. 2 protection device inlet cabinet is connected with the current transformer L3 to form an overcurrent current collection circuit.
Preferably, the 2# cable distribution box comprises a current transformer L4, a voltage transformer J4 and a 2# outlet switch group, the 2# outgoing line switch group comprises a 2# fault current switch and a 2# fault voltage switch, the input end of the 2# fault current switch penetrates through a current transformer L4 and then is connected with an alternating current power supply UA2, the output end of the 2# fault current switch is connected with a cable bus UA2, the input end of the 2# fault voltage switch is connected with an alternating current power supply UN2, the output end of the 2# fault voltage switch is connected with a cable bus UB2, a sampling point g is arranged between the input end of the 2# fault current switch and the current transformer L4, a sampling point h is arranged between the input end of the 2# fault voltage switch and the alternating current power supply UN2, a voltage transformer J4 collects the voltage between the sampling point g and the h and is connected with a 2# protection device outgoing line cabinet to form a fault voltage collection circuit, and a 2# protection device outgoing line cabinet.
Preferably, the 2# cable distribution box further comprises 2# load switch groups, and the 2# load switch groups are respectively arranged between the adjustable load B and the connections of the cable buses UA2 and UB2 and are used for controlling the communication of the fault loop.
Preferably, the alternating current power supply is connected with a two-phase loop of a 10KV line, and 220V alternating current power supply analog line voltage is applied.
Preferably, the recloser is an electronically automatically controlled recloser.
Preferably, the current transformers L1 and L2 are used for converting the low-transformation-ratio loop current to the 1# protection device, the voltage transformers J1 and J2 are used for converting the voltage to the same sampling voltage of the 1# protection device, the current transformers L3 and L4 are used for converting the low-transformation-ratio loop current to the 2# protection device, and the voltage transformers J3 and J4 are used for converting the voltage to the same sampling voltage of the 2# protection device.
The utility model adopts the technical proposal that the AC power supply two-phase loop enters from the simulation position of the recloser to the inlet switch of the 1# cable distribution box and flows out from the outlet switch thereof to enter the inlet switch of the 2# cable distribution box, the load switch of the 1# cable distribution box and the load switch of the 2# cable distribution box respectively carry load operation, the 1# cable distribution box and the 2# cable respectively connect boxes rely on respective inlet cabinets and outlet cabinet protection devices to form an input current acquisition loop, an input voltage acquisition loop, a setting current acquisition loop, a setting voltage acquisition loop, an overcurrent current acquisition loop, an overcurrent voltage acquisition loop, a fault current acquisition loop, a fault voltage acquisition loop, a through current protection loop and a fault loop, the circuit fault is simulated through the switching of the switches in the loops, the switching of the protection action of the recloser is controlled, the recloser simulates the switching of the switch in the AC power supply station, to implement a distribution automation action policy. The utility model discloses though the structure is simple and convenient, but can realize the automatic tactics debugging overall process of analog line all switch action circumstances.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1, the utility model provides a distribution network automation debugging device, which comprises a recloser, a 1# cable distribution box, a 2# cable distribution box, a 1# protection device, a 2# protection device, an adjustable load a and an adjustable load B, wherein the input end of the recloser is connected with an alternating current power supply, and the output end of the recloser is connected with the inlet end of the 1# cable distribution box; the inlet wire end of the 1# cable distribution box is also connected with an inlet wire cabinet of the 1# protection device to form an input current acquisition loop and an input voltage acquisition loop; the 1# protection device outlet cabinet is connected with the 1# cable distribution box outlet end to form a setting current acquisition loop and a setting voltage acquisition loop, the 1# cable distribution box outlet end is connected with the 2# cable distribution box inlet end, and the 2# cable distribution box inlet end is connected with the 2# protection device inlet cabinet to form an overcurrent current acquisition loop and an overcurrent voltage acquisition loop; the outlet end of the 2# cable tapping box is connected with an alternating current power supply, the outlet end of the 2# cable tapping box is further connected with an outlet cabinet of a 2# protection device to form a fault current collection loop and a fault voltage collection loop, the adjustable load A is connected with the load end of the 1# cable tapping box to form a relay protection loop, and the adjustable load B is connected with the load end of the 2# cable tapping box to form a fault loop.
In the embodiment of the utility model, the utility model discloses an input current collection return circuit, input voltage collection return circuit, the current collection return circuit of setting, the voltage collection return circuit of setting, the current collection return circuit that overflows, the voltage collection return circuit that overflows, the fault current collection return circuit, the fault voltage collection return circuit, through electric protection return circuit, the fault return circuit, through the switching of cable shunting case switch, analog line trouble, the switching of control recloser protection action, recloser simulation alternating current power supply in-station switch to carry out distribution network automation action strategy.
The utility model discloses a connection between recloser, adjustable load A, 1# cable distribution box, 2# cable distribution box, adjustable load B, 1# protection device, the 2# protection device simulates the circuit operation completely, and the action condition of true reaction switch after the strategy starts ensures the correct action of circuit automation tactics. The utility model discloses though the structure is simple and convenient, but can realize the automatic tactics debugging overall process of analog line all switch action circumstances.
Preferably, the 1# cable distribution box comprises cable buses UA1, UB1, a current transformer L1, a voltage transformer J1, and a 1# incoming line switch group, wherein the 1# incoming line switch group comprises a 1# input current switch and a 1# input voltage switch, an alternating current power line IA1 output by the recloser passes through a current transformer L1 to be connected with an input end of the 1# current switch, and an output end of the 1# input current switch is connected with a line bus UA 1; alternating voltage UN1 that the coincidence ware is exported connects 1# input voltage switch's input, 1# input voltage switch's output connects cable bus UB1, be equipped with sampling point a between the connection of current transformer L1 and 1# input current switch's input, 1# input voltage switch's input is equipped with sampling point b, voltage transformer J1 gathers sampling point a, the voltage between b just connects 1# protection device inlet wire cabinet and forms the input voltage collection return circuit, 1# protection device inlet wire cabinet connects current transformer L1 and forms the input current collection return circuit.
Preferably, the 1# cable distribution box further includes a 1# load switch group, and the 1# load switch group is respectively disposed between the adjustable load a and the connections of the cable buses UA1 and UB1, and is used for controlling the communication of the relay protection circuit.
Preferably, the 1# cable distribution box further comprises a current transformer L2, a voltage transformer J2 and a 1# outgoing switch group, wherein the 1# outgoing switch group comprises a 1# setting current switch and a 1# setting voltage switch, the input end of the 1# setting current switch sequentially penetrates through the current transformer L2 and the current transformer L3 and then is connected with the inlet end of the 2# cable distribution box, and the output end of the 1# setting current switch is connected with a cable bus UA 1; the output end of the 1# setting voltage switch is connected with a cable bus UB1, a sampling point c is arranged between the input end of the 1# setting current switch and the connection of a current transformer L2, a sampling point d is arranged at the input end of the 1# setting voltage switch, a voltage transformer J2 is connected with the voltage between the sampling points c and d and is connected with a 1# protection device outgoing line cabinet to form a setting voltage acquisition loop, and the 1# protection device outgoing line cabinet is connected with a current transformer L21 to form a setting current acquisition loop.
Preferably, the 2# cable distribution box comprises cable buses UA2, UB2, a current transformer L3, a voltage transformer J3, and a 2# incoming line switch group, wherein the 2# incoming line switch group comprises a 2# overcurrent current switch and a 2# overcurrent voltage switch, an input end of the 1# outgoing line current switch sequentially passes through the current transformer L2 and the current transformer L3 and then is connected with an input end of the 2# overcurrent current switch, and an output end of the 2# overcurrent current switch is connected with the cable bus UA 2; the input end of the No. 2 overcurrent voltage switch is connected with the input end of the No. 1 setting voltage switch, the output end of the No. 2 voltage switch is connected with a cable bus UB2, a sampling point e is arranged between the connection of the input ends of the current transformer L3 and the No. 2 current switch, the input end of the No. 2 voltage switch is provided with a sampling point f, the voltage transformer J3 collects the voltage between the sampling point e and the sampling point f and is connected with the No. 2 protection device inlet cabinet to form an overcurrent voltage collection circuit, and the No. 2 protection device inlet cabinet is connected with the current transformer L3 to form an overcurrent current collection circuit.
Preferably, the 2# cable distribution box comprises a current transformer L4, a voltage transformer J4 and a 2# outlet switch group, the 2# outgoing line switch group comprises a 2# fault current switch and a 2# fault voltage switch, the input end of the 2# fault current switch penetrates through a current transformer L4 and then is connected with an alternating current power supply UA2, the output end of the 2# fault current switch is connected with a cable bus UA2, the input end of the 2# fault voltage switch is connected with an alternating current power supply UN2, the output end of the 2# fault voltage switch is connected with a cable bus UB2, a sampling point g is arranged between the input end of the 2# fault current switch and the current transformer L4, a sampling point h is arranged between the input end of the 2# fault voltage switch and the alternating current power supply UN2, a voltage transformer J4 collects the voltage between the sampling point g and the h and is connected with a 2# protection device outgoing line cabinet to form a fault voltage collection circuit, and a 2# protection device outgoing line cabinet.
Preferably, the 2# cable distribution box further comprises 2# load switch groups, and the 2# load switch groups are respectively arranged between the adjustable load B and the connections of the cable buses UA2 and UB2 and are used for controlling the communication of the fault loop.
In the embodiment of the utility model, the utility model discloses a recloser-circuit-switch-adjustable load device wiring, directly gather voltage at the same sampling point of each voltage transformer, and/or increase miniature transformer and alternate to protection device same grade sampling voltage and little transformation ratio current transformer and gather return current to protection device.
Preferably, the alternating current power supply is connected with a two-phase loop of a 10KV line, and 220V alternating current power supply analog line voltage is applied.
Preferably, the recloser is an electronically automatically controlled recloser.
Preferably, the current transformers L1 and L2 are used for converting the low-transformation-ratio loop current to the 1# protection device, the voltage transformers J1 and J2 are used for converting the voltage to the same sampling voltage of the 1# protection device, the current transformers L3 and L4 are used for converting the low-transformation-ratio loop current to the 2# protection device, and the voltage transformers J3 and J4 are used for converting the voltage to the same sampling voltage of the 2# protection device.
An actual operation example:
firstly, setting parameters such as quick break of a recloser, reclosing times, delay time 5S, an overcurrent protection fixed value and the like, switching on an alternating-current power supply 220V, switching on the recloser, switching on an inlet switch assembly, an outlet switch assembly and a load switch assembly of the 1# cable distribution box, switching on the inlet switch assembly and the load switch assembly of the 2# cable distribution box, and adjusting an adjustable load A to enable the line running current not to exceed the protection set fixed value. When a fault loop controlled by a load switch of the simulation 2# cable distribution box has a fault, the adjustable load B is adjusted to enable the line running current to be larger than an overcurrent protection fixed value, and when the set protection action time is reached, the recloser carries out overcurrent protection action and the recloser switch is opened. The 1# cable distribution box inlet switch, the outlet switch and the 2# cable distribution box inlet switch are switched off due to voltage loss and are delayed for 5S, the reclosers are successfully reclosed, the 1# cable distribution box inlet switch and the outlet switch are successfully switched on due to power-on delay, and the circuit is provided with an adjustable load A which normally runs. And after the power-on delay, the 2# cable tapping box inlet switch is switched on, and because of the switching-on to a fault line, the recloser trips because of protection action, and meanwhile, the 1# cable tapping box inlet switch, the outlet switch and the 2# cable tapping box inlet switch are switched off because of voltage loss, and meanwhile, the 2# cable tapping box inlet switch judges that the fault reason is that a fault circuit controlled by a load switch of the 2# cable tapping box fails, and the 2# cable tapping box inlet switch is switched on and off in a locking mode. Reclosing after the delay of the recloser is 5S, and the line inlet switch and the line outlet switch of the 1# cable distribution box are successfully closed due to the power-on delay, so that the circuit is provided with an adjustable load A which normally runs. And the 2# cable distribution box inlet switch is closed and locked, and the fault point is successfully isolated by the line. Through the automatic debugging device, the action condition of the switch on the line is completely simulated, and the on-site debugging requirement of the automatic strategy is met.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. An automatic distribution network debugging device is characterized by comprising a recloser, a 1# cable distribution box, a 2# cable distribution box, a 1# protection device, a 2# protection device, an adjustable load A and an adjustable load B, wherein the input end of the recloser is connected with an alternating current power supply, and the output end of the recloser is connected with the inlet wire end of the 1# cable distribution box; the inlet wire end of the 1# cable distribution box is also connected with an inlet wire cabinet of the 1# protection device to form an input current acquisition loop and an input voltage acquisition loop; the 1# protection device outlet cabinet is connected with the 1# cable distribution box outlet end to form a setting current acquisition loop and a setting voltage acquisition loop, the 1# cable distribution box outlet end is connected with the 2# cable distribution box inlet end, and the 2# cable distribution box inlet end is connected with the 2# protection device inlet cabinet to form an overcurrent current acquisition loop and an overcurrent voltage acquisition loop; the outlet end of the 2# cable tapping box is connected with an alternating current power supply, the outlet end of the 2# cable tapping box is further connected with an outlet cabinet of a 2# protection device to form a fault current collection loop and a fault voltage collection loop, the adjustable load A is connected with the load end of the 1# cable tapping box to form a relay protection loop, and the adjustable load B is connected with the load end of the 2# cable tapping box to form a fault loop.
2. The distribution network automation debugging device of claim 1, wherein the # 1 cable distribution box comprises cable buses UA1, UB1, a current transformer L1, a voltage transformer J1, and a # 1 incoming line switch group, wherein the # 1 incoming line switch group comprises a # 1 input current switch and a # 1 input voltage switch, the ac current line IA1 output by the recloser passes through the current transformer L1 to be connected with the input end of the # 1 current switch, and the output end of the # 1 input current switch is connected with the cable bus UA 1; alternating voltage UN1 that the coincidence ware is exported connects 1# input voltage switch's input, 1# input voltage switch's output connects cable bus UB1, be equipped with sampling point a between the connection of current transformer L1 and 1# input current switch's input, 1# input voltage switch's input is equipped with sampling point b, voltage transformer J1 gathers sampling point a, the voltage between b just connects 1# protection device inlet wire cabinet and forms the input voltage collection return circuit, 1# protection device inlet wire cabinet connects current transformer L1 and forms the input current collection return circuit.
3. The distribution network automation debugging device of claim 1, wherein the # 1 cable distribution box further comprises a # 1 load switch group, and the # 1 load switch group is respectively arranged between the adjustable load a and the connection of the cable buses UA1 and UB1, and is used for controlling the communication of the relay protection circuit.
4. The distribution network automation debugging device of claim 2, wherein the # 1 cable distribution box further comprises a current transformer L2, a voltage transformer J2 and a # 1 outlet switch group, wherein the # 1 outlet switch group comprises a # 1 setting current switch and a # 1 setting voltage switch, an input end of the # 1 setting current switch sequentially passes through the current transformer L2 and the current transformer L3 and then is connected with an inlet end of the # 2 cable distribution box, and an output end of the # 1 setting current switch is connected with a cable bus UA 1; the output end of the 1# setting voltage switch is connected with a cable bus UB1, a sampling point c is arranged between the input end of the 1# setting current switch and the connection of a current transformer L2, a sampling point d is arranged at the input end of the 1# setting voltage switch, a voltage transformer J2 is connected with the voltage between the sampling points c and d and is connected with a 1# protection device outgoing line cabinet to form a setting voltage acquisition loop, and the 1# protection device outgoing line cabinet is connected with a current transformer L21 to form a setting current acquisition loop.
5. The distribution network automation debugging device of claim 4, wherein the 2# cable distribution box comprises cable buses UA2, UB2, a current transformer L3, a voltage transformer J3, and a 2# incoming switch group, wherein the 2# incoming switch group comprises a 2# overcurrent current switch and a 2# overcurrent voltage switch, an input end of the 1# outgoing current switch sequentially passes through the current transformer L2 and the current transformer L3 and then is connected with an input end of the 2# overcurrent current switch, and an output end of the 2# overcurrent current switch is connected with the cable bus UA 2; the input end of the No. 2 overcurrent voltage switch is connected with the input end of the No. 1 setting voltage switch, the output end of the No. 2 voltage switch is connected with a cable bus UB2, a sampling point e is arranged between the connection of the input ends of the current transformer L3 and the No. 2 current switch, the input end of the No. 2 voltage switch is provided with a sampling point f, the voltage transformer J3 collects the voltage between the sampling point e and the sampling point f and is connected with the No. 2 protection device inlet cabinet to form an overcurrent voltage collection circuit, and the No. 2 protection device inlet cabinet is connected with the current transformer L3 to form an overcurrent current collection circuit.
6. The distribution network automation debugging device of claim 1, wherein the 2# cable distribution box comprises a current transformer L4, a voltage transformer J4 and a 2# outlet switch group, wherein the 2# outlet switch group comprises a 2# fault current switch and a 2# fault voltage switch, an input end of the 2# fault current switch passes through the current transformer L4 and is connected with an alternating current power supply UA2, an output end of the 2# fault current switch is connected with a cable bus UA2, an input end of the 2# fault voltage switch is connected with an alternating current power supply UN2, an output end of the 2# fault voltage switch is connected with a cable bus UB2, a sampling point g is arranged between the input end of the 2# fault current switch and the current transformer L4, a sampling point h is arranged between the input end of the 2# fault voltage switch and the alternating current power supply UN2, the voltage transformer J4 collects voltage between the sampling points g and h and is connected with a 2# protection device outlet cabinet to form a fault voltage, the 2# protection device outlet cabinet is connected with a current transformer L4 to form a fault current acquisition loop.
7. The distribution network automation debugging device of claim 1 wherein the # 2 cable distribution box further comprises # 2 load switch groups, the # 2 load switch groups being respectively disposed between the adjustable load B and the connections of the cable buses UA2 and UB2 for controlling the communication of the fault loop.
8. The distribution network automation debugging device of claim 1 wherein the ac power source is connected to a two-phase loop of a 10KV line, applying a 220V ac power source analog line voltage.
9. The distribution network automation debugging device of claim 1 wherein the recloser employs an electronically automatically controlled recloser.
10. The distribution network automation debugging device of claim 4 wherein the current transformers L1, L2 low-ratio loop current to 1# protection device, the voltage transformers J1, J2 transform the voltage to the same sampling voltage of 1# protection device, the current transformers L3, L4 low-ratio loop current to 2# protection device, the voltage transformers J3, J4 transform the voltage to the same sampling voltage of 2# protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922280061.9U CN212060444U (en) | 2019-12-16 | 2019-12-16 | Distribution network automation debugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922280061.9U CN212060444U (en) | 2019-12-16 | 2019-12-16 | Distribution network automation debugging device |
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| CN212060444U true CN212060444U (en) | 2020-12-01 |
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| CN201922280061.9U Active CN212060444U (en) | 2019-12-16 | 2019-12-16 | Distribution network automation debugging device |
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