CN217931995U - Remote electric leakage test system - Google Patents
Remote electric leakage test system Download PDFInfo
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- CN217931995U CN217931995U CN202221503488.6U CN202221503488U CN217931995U CN 217931995 U CN217931995 U CN 217931995U CN 202221503488 U CN202221503488 U CN 202221503488U CN 217931995 U CN217931995 U CN 217931995U
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- 238000012360 testing method Methods 0.000 title claims abstract description 125
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 239000013307 optical fiber Substances 0.000 claims abstract description 9
- 230000003068 static effect Effects 0.000 claims description 6
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 6
- 239000003245 coal Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
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- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The utility model provides a long-range electric leakage test system, include: the system comprises a power monitoring host, a first ring network switch, an optical fiber ring network, a second ring network switch, an intrinsic safety type transmission substation and a remote electric leakage test device; the power monitoring host is connected with a first ring network switch, the first ring network switch and a second ring network switch are respectively connected with an optical fiber ring network, wherein the first ring network switch is used for being installed in a centralized control room, and the second ring network switch is used for being installed underground; the second ring network switch is connected with the intrinsic safety type transmission substation; the intrinsic safety type transmission substation is communicated with the remote electric leakage test device through a wireless network; the remote electric leakage test device at least comprises an electric leakage test outlet which is a normally open contact interface; the leakage test operation of the low-voltage power distribution device can be remotely controlled.
Description
Technical Field
The utility model relates to a low pressure distribution device's in pit test system, especially a long-range electric leakage test system.
Background
The underground low-voltage distribution devices such as coal mines and the like are generally provided with comprehensive protection devices, so that the leakage protection of a low-voltage main switch and the leakage selection protection of a low-voltage branch switch can be reliably realized; in order to ensure the normal action of the comprehensive protection device and the power supply safety, the underground trip test of the running condition of the comprehensive protection device is required every day according to the relevant regulations in the coal mine safety regulations; in the past, when manual operation is adopted, workers are required to reach an underground substation to complete the leakage test operation of each low-voltage distribution device, and time and labor are wasted.
Disclosure of Invention
To exist not enough among the prior art, the embodiment of the utility model provides a long-range electric leakage test system can long-rangely control, realizes replacing the artifical testing process who presses the electric leakage test button of integrated protection device to accomplish long-range electric leakage test, realize the long-range unmanned operation of low pressure distribution device leak hunting. In order to realize the technical purpose, the embodiment of the utility model adopts the technical scheme that:
an embodiment of the utility model provides a long-range electric leakage test system, include: the system comprises a power monitoring host, a first ring network switch, an optical fiber ring network, a second ring network switch, an intrinsic safety type transmission substation and a remote electric leakage test device;
the power monitoring host is connected with a first ring network switch, the first ring network switch and a second ring network switch are respectively connected with an optical fiber ring network, wherein the first ring network switch is used for being installed in a centralized control room, and the second ring network switch is used for being installed underground; the second ring network switch is connected with the intrinsic safety type transmission substation; the intrinsic safety type transmission substation is communicated with the remote electric leakage test device through a wireless network;
the remote electric leakage test device at least comprises an electric leakage test outlet which is a normally open contact interface; one end of a leakage test outlet of the remote leakage test device is connected with one end of a secondary side of the transformer T1, the other end of the secondary side of the transformer T1 is connected with one end of the fuse F2, the other end of the fuse F2 is connected with one end of a coil of the leakage test contactor K1, and the other end of the coil of the leakage test contactor K1 is connected with the other end of the leakage test outlet of the remote leakage test device; one end of a power input interface of the remote leakage test device is connected with one end of the secondary side of the transformer T1, and the other end of the power input interface is connected with the other end of the fuse F2;
two ends of a normally open contact K1-1 of the contactor K1 for the leakage test are respectively connected with two ends of a leakage test button AN1 in parallel; one end of the electric leakage test button AN1 is connected with a phase live wire through a resistor R7, and the other end of the electric leakage test button AN1 is connected with AN auxiliary grounding electrode;
the primary of the transformer T1 is used for connecting two-phase live wires.
Furthermore, the remote electric leakage test device further comprises a reset outlet, wherein the reset outlet is a normally open contact interface and is used for being connected to a reset button of the low-voltage distribution device in parallel to remotely control the reset operation of the low-voltage distribution device.
Furthermore, the remote leakage testing device further comprises a closing outlet, wherein the closing outlet is a normally open contact interface and is used for being connected to a closing button of the low-voltage distribution device in parallel to remotely control the closing operation of the low-voltage distribution device.
Furthermore, the remote leakage test device further comprises a switching-off outlet, wherein the switching-off outlet is a normally open contact interface and is used for being connected to a switching-off button of the low-voltage distribution device in parallel to remotely control the switching-off operation of the low-voltage distribution device.
Furthermore, the remote electric leakage test device also comprises an electric leakage test signal input interface which is effective in high level; the leakage test signal input interface is connected with one end of a normally open switch, and the other end of the normally open switch is connected with positive voltage provided by the public end of the remote leakage test device.
Furthermore, the remote electric leakage test device also comprises a switch-on position signal input interface which is effective in high level; one end of an auxiliary normally open contact of a breaker of the low-voltage distribution device is connected with positive voltage, and the other end of the auxiliary normally open contact of the breaker is connected with a brake position signal input interface.
Further, the remote electric leakage test device further comprises a zero sequence current input interface.
Furthermore, the primary side of the transformer T1 comprises two ends and a middle tap, one end of the primary side of the transformer T1 is connected with a live wire of one phase through a fuse F1, the other end of the primary side of the transformer T1 is connected with one static end of the single-pole double-throw switch SW1, the middle tap of the primary side of the transformer T1 is connected with the other static end of the single-pole double-throw switch SW1, and the moving end of the single-pole double-throw switch SW1 is connected with the live wire of the other phase.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is:
1) After the low-voltage distribution device is upgraded, the electrical connection of the original low-voltage switch is not changed, the in-place electric leakage test function of the original low-voltage switch is not changed, and the remote electric leakage test and the in-place electric leakage test are effective.
2) The remote electric leakage test device is connected through a wireless network, so that later maintenance is facilitated, and the position of the remote electric leakage test device is moved along with the low-voltage power distribution device in the using process.
3) The device has multiple remote control functions, and can respectively control the reset operation, the closing operation and the opening operation of the low-voltage distribution device in a remote way.
4) The switching-on position signal input interface is arranged, so that the switching-on state of the low-voltage power distribution device can be remotely monitored.
Drawings
Fig. 1 is a network topology diagram of a remote leakage testing system according to an embodiment of the present invention.
Fig. 2 is a wiring diagram of the remote leakage testing device in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, an embodiment of the present invention provides a remote leakage testing system, which includes a power monitoring host, a first ring network switch, an optical fiber ring network, a second ring network switch, an intrinsically safe transmission substation, and a remote leakage testing device;
the power monitoring host is connected with a first ring network switch, the first ring network switch and a second ring network switch are respectively connected with an optical fiber ring network, wherein the first ring network switch is used for being installed in a centralized control room, and the second ring network switch is used for being installed underground; the second ring network switch is connected with the intrinsic safety type transmission substation; the intrinsic safety type transmission substation is communicated with the remote electric leakage test device through a wireless network;
in this embodiment, the intrinsically safe transmission substation is a Lora master station, and the remote leakage test device includes a Lora wireless communication module as a Lora substation; therefore, one intrinsic safety type transmission substation can be communicated with a plurality of remote electric leakage test devices through the Lora wireless network; the intrinsically safe transmission substation completes the conversion between the Ethernet and the Lora wireless network;
in this embodiment, the remote leakage testing device is mainly composed of a single chip microcomputer and at least comprises a leakage testing outlet, wherein the leakage testing outlet is a normally open contact interface;
table 1 shows the definition of each terminal of the remote leakage test apparatus;
the terminals 1 and 2 are reset outlets, the reset outlets are normally open contact interfaces and are connected to a reset button of the low-voltage distribution device in parallel, and the reset operation of the low-voltage distribution device can be remotely controlled;
the terminals 3 and 4 are closing outlets which are normally open contact interfaces and are connected to a closing button of the low-voltage distribution device in parallel, and the closing operation of the low-voltage distribution device can be controlled remotely;
the terminals 5 and 6 are leakage test outlets which are normally open contact interfaces and are connected to a leakage test button of the low-voltage distribution device after passing through the alternating-current contactor, so that the leakage test operation of the low-voltage distribution device can be remotely controlled;
the terminals 7 and 8 are opening outlets which are normally open contact interfaces and are connected to an opening button of the low-voltage distribution device in parallel, and the opening operation of the low-voltage distribution device can be controlled remotely;
the terminal 9 is a leakage test signal input interface, when the local accessed leakage test signal is at a high level, a leakage test outlet is closed for 2 seconds, and one local leakage test operation is completed;
the terminal 10 is a switch-on position signal input interface, and if one end of an auxiliary normally open contact of a breaker of the low-voltage distribution device is connected with positive voltage and the other end is connected with the switch-on position signal input interface, the switch-on state of the low-voltage distribution device can be monitored;
the terminal 11 is a standby signal input interface;
the terminals 13 and 14 are zero sequence current input interfaces, are used for being externally connected with a zero sequence current transformer and are used for monitoring the zero sequence current amplitude during the leakage test;
the terminals 15 and 16 are power input interfaces; the input alternating current voltage is 36 v-245 v;
TABLE 1
As shown in fig. 2, one end of the leakage test outlet of the remote leakage test device is connected to one end of the secondary side of the transformer T1, the other end of the secondary side of the transformer T1 is connected to one end of the fuse F2, the other end of the fuse F2 is connected to one end of the coil of the leakage test contactor K1, and the other end of the coil of the leakage test contactor K1 is connected to the other end of the leakage test outlet of the remote leakage test device; one end of a power input interface of the remote leakage test device is connected with one end of the secondary side of the transformer T1, and the other end of the power input interface is connected with the other end of the fuse F2;
the two ends of a normally open contact K1-1 of the contactor K1 for the leakage test are respectively connected with the two ends of a leakage test button AN1 in parallel; one end of the electric leakage test button AN1 is connected with a phase live wire through a resistor R7, and the other end of the electric leakage test button AN1 is connected with AN auxiliary grounding electrode;
the primary side of the transformer T1 is used for connecting two-phase live wires;
the remote leakage test device is used for transforming the remote leakage test function of the existing low-voltage power distribution device without changing the structure and the control function of the original switch;
when a remote electric leakage test is needed, a remote electric leakage test instruction is sent out through the power monitoring host, the Lora wireless communication is transmitted to the remote electric leakage test device through the optical fiber ring network, the single chip microcomputer in the remote electric leakage test device controls the electric leakage test outlet to be closed, the coil of the contactor K1 for the electric leakage test is electrified, the normally open contact K1-1 of the contactor K1 for the electric leakage test is closed, the manual pressing of the electric leakage test button AN1 is replaced, and the remote electric leakage test is realized.
When an in-situ leakage test is needed, connecting a leakage test signal input interface with one end of a normally open switch, and connecting the other end of the normally open switch with a positive voltage VCC provided by a common end of a remote leakage test device; and when the normally open switch is closed, the leakage test outlet is closed for 2 seconds, and one on-site leakage test operation is completed.
In addition, the remote leakage test device in the embodiment of the application also provides a reset outlet, a closing outlet and an opening outlet, and can respectively remotely control the reset operation, the closing operation and the opening operation of the low-voltage distribution device; meanwhile, whether the low-voltage power distribution device is successfully switched on or not can be remotely monitored through the switching-on position signal input interface.
As optimization of the embodiment, the primary of the transformer T1 includes two ends and a middle tap, one end of the primary of the transformer T1 is connected to a phase live wire through a fuse F1, the other end of the primary of the transformer T1 is connected to one static end of the single-pole double-throw switch SW1, the middle tap of the primary of the transformer T1 is connected to the other static end of the single-pole double-throw switch SW1, and the moving end of the single-pole double-throw switch SW1 is connected to the other phase live wire; by switching the single-pole double-throw switch SW1, the transformer T1 can be applied to two alternating voltages of 660v/1140 v.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (8)
1. A remote electrical leakage testing system, comprising: the system comprises a power monitoring host, a first ring network switch, an optical fiber ring network, a second ring network switch, an intrinsic safety type transmission substation and a remote electric leakage test device;
the power monitoring host is connected with a first ring network switch, the first ring network switch and a second ring network switch are respectively connected with an optical fiber ring network, wherein the first ring network switch is used for being installed in a centralized control room, and the second ring network switch is used for being installed underground; the second ring network switch is connected with the intrinsic safety type transmission substation; the intrinsic safety type transmission substation is communicated with the remote electric leakage test device through a wireless network;
the remote electric leakage test device at least comprises an electric leakage test outlet which is a normally open contact interface; one end of a leakage test outlet of the remote leakage test device is connected with one end of a secondary side of the transformer T1, the other end of the secondary side of the transformer T1 is connected with one end of the fuse F2, the other end of the fuse F2 is connected with one end of a coil of the leakage test contactor K1, and the other end of the coil of the leakage test contactor K1 is connected with the other end of the leakage test outlet of the remote leakage test device; one end of a power input interface of the remote leakage test device is connected with one end of the secondary side of the transformer T1, and the other end of the power input interface is connected with the other end of the fuse F2;
two ends of a normally open contact K1-1 of the contactor K1 for the leakage test are respectively connected with two ends of a leakage test button AN1 in parallel; one end of the electric leakage test button AN1 is connected with a phase live wire through a resistor R7, and the other end of the electric leakage test button AN1 is connected with AN auxiliary grounding electrode;
the primary of the transformer T1 is used for connecting two-phase live wires.
2. The remote electrical leakage test system of claim 1,
the remote electric leakage test device further comprises a reset outlet which is a normally open contact interface and is used for connecting to a reset button of the low-voltage distribution device and remotely controlling the reset operation of the low-voltage distribution device.
3. A remote electric leakage test system as claimed in claim 1,
the remote electric leakage test device further comprises a closing outlet which is a normally open contact interface and is used for being connected to a closing button of the low-voltage distribution device in parallel to remotely control the closing operation of the low-voltage distribution device.
4. The remote electrical leakage test system of claim 1,
the remote leakage test device further comprises a separating brake outlet which is a normally open contact interface and is used for being connected to a separating brake button of the low-voltage distribution device in parallel to remotely control the separating brake operation of the low-voltage distribution device.
5. The remote electrical leakage test system of claim 1,
the remote electric leakage test device also comprises an electric leakage test signal input interface which is effective in high level; the leakage test signal input interface is connected with one end of a normally open switch, and the other end of the normally open switch is connected with positive voltage provided by the public end of the remote leakage test device.
6. The remote electrical leakage test system of claim 1,
the remote electric leakage test device also comprises a switch-on position signal input interface which is effective in high level; one end of an auxiliary normally open contact of a breaker of the low-voltage distribution device is connected with positive voltage, and the other end of the auxiliary normally open contact of the breaker is connected with a brake position signal input interface.
7. The remote electrical leakage test system of claim 1,
the remote electric leakage test device further comprises a zero sequence current input interface.
8. The remote electrical leakage test system of claim 1,
the transformer T1 primary side comprises two ends and a middle tap, one end of the transformer T1 primary side is connected with one phase live wire through a fuse F1, the other end of the transformer T1 primary side is connected with one static end of a single-pole double-throw switch SW1, the middle tap of the transformer T1 primary side is connected with the other static end of the single-pole double-throw switch SW1, and the moving end of the single-pole double-throw switch SW1 is connected with the other phase live wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221503488.6U CN217931995U (en) | 2022-06-15 | 2022-06-15 | Remote electric leakage test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221503488.6U CN217931995U (en) | 2022-06-15 | 2022-06-15 | Remote electric leakage test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217931995U true CN217931995U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221503488.6U Expired - Fee Related CN217931995U (en) | 2022-06-15 | 2022-06-15 | Remote electric leakage test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217931995U (en) |
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2022
- 2022-06-15 CN CN202221503488.6U patent/CN217931995U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |