CN211579596U - DC system load migration equipment - Google Patents
DC system load migration equipment Download PDFInfo
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- CN211579596U CN211579596U CN201921999257.7U CN201921999257U CN211579596U CN 211579596 U CN211579596 U CN 211579596U CN 201921999257 U CN201921999257 U CN 201921999257U CN 211579596 U CN211579596 U CN 211579596U
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Abstract
The utility model relates to a direct current system load migration equipment. The direct-current system load transfer equipment comprises a power distribution box, an air switch arranged on the power distribution box, a branch circuit two-core aviation socket, an LED indicator lamp and a main power supply two-core aviation socket; the direct current system load migration equipment further comprises a power supply wire tray mechanism and a branch connection mechanism, wherein the power supply wire tray mechanism and the branch connection mechanism are arranged outside the power distribution box and can be connected with the power distribution box. The utility model can improve the transformation efficiency of the direct current system of the transformer substation, and eliminate the waiting time waste in the power failure process of primary equipment; the risk that the primary equipment is out of protection due to power failure of the protection device is effectively reduced; manpower cost is saved, two operators are required to operate when primary equipment is powered off, the tool can be used for operating without the need of powering off the primary equipment, and certain threat can be caused to the stability of a power grid when the primary equipment is powered off; the standardization of the operation tool and the standardization of the acceptance check operation are realized.
Description
Technical Field
The utility model relates to a technical field of equipment, more specifically relates to direct current system load migration equipment.
Background
The relay protection device and the automation equipment of the transformer substation almost adopt direct current power supplies for power supply. With the development of recent years, the power supply standards of the substation devices for the direct current power supply are higher and higher. The direct current power supply load distribution of many transformer substations does not meet the requirements nowadays, and the direct current system configuration of many transformer substations is too lagged, and direct current equipment is seriously aged, so that the technical transformation of the direct current equipment is needed. However, in the process of transforming and replacing the dc system, the relay protection device and the automation equipment need to be changed to a new dc system in a live state, and it is ensured that the protection device and the automation equipment operating in the process of changing are not powered off, once the relay protection device and the automation equipment are powered off, the system is not protected once and the device sends an alarm signal, which seriously affects the safe and stable operation of the power grid. However, in the process of transformation, due to the fact that connecting pieces or connecting wires on corresponding terminal rows of certain protection screen direct current cables cannot be shifted, new direct current cables cannot be connected according to standards under the condition that the protection device and the automation equipment are not powered off, so that the protection device and the corresponding protection device cannot be connected until power failure is applied once, the safe and stable operation of a power grid is influenced, and the working efficiency of load migration and transformation is reduced.
The traditional method is adopted, and under the condition of a complex direct-current power supply circuit, if a power supply circuit wiring terminal has no standby terminal, wiring can be performed. At the moment, the power failure of equipment has to be applied once, and the old direct current system power supply cable can be removed after the power failure of the equipment is waited to be connected with a new direct current system power supply cable. The following disadvantages exist with the conventional methods:
the direct current system has low transformation efficiency, can eliminate the waste of waiting time in the power failure process of primary equipment, and has long construction period; manpower cost is wasted, and two operators are required for operation when one device is powered off; the power failure of primary equipment can cause certain risks to the stability of a power grid.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving above-mentioned technical problem to a certain extent at least, provide DC system load migration equipment, utilize this equipment, can realize under the DC power supply circuit condition of complicacy, and can ensure under the uninterrupted power condition, realize migrating to new DC system relay protection device and automatic device power supply.
The technical scheme of the utility model is that: the direct-current system load transfer equipment comprises a power distribution box, an air switch arranged on the power distribution box, a branch circuit two-core aviation socket, an LED indicator lamp and a main power supply two-core aviation socket;
the direct current system load migration equipment further comprises a power supply wire tray mechanism and a branch connection mechanism, wherein the power supply wire tray mechanism and the branch connection mechanism are arranged outside the power distribution box and can be connected with the power distribution box.
Furthermore, air switch, branch road two-core aviation socket, LED pilot lamp all locate on the upper surface of block terminal. The quantity of air switch, branch circuit two-core aviation socket, LED pilot lamp all be a plurality ofly. The above elements are arranged on the upper surface of the distribution box, so that the operation is easy, and the display effect is obvious.
Furthermore, the two-core aviation socket of main power supply is arranged on the side wall of the distribution box, so that the operation is convenient.
Furthermore, power supply line dish mechanism include power supply line dish, two core aviation plugs of total power, power conductor, total power connection plug, power conductor winding on power supply line dish, two core aviation plugs of total power are connected to power conductor one end, total power connection plug is connected to the other end, two core aviation plugs of total power peg graft two core aviation sockets of total power.
Furthermore, the power supply wire disc is a disc, and a support is arranged at the bottom of the disc. The disc can enable the power supply lead to be wound, and the support can support the disc.
Furthermore, the branch connecting mechanism comprises a branch connecting lead and a branch connecting plug connected with the branch connecting lead.
Furthermore, a box cover is further arranged on the upper portion of the distribution box, and the box cover is hinged with the distribution box. Being provided with a hinged lid makes the distribution box safer.
The direct current system load migration equipment can provide a reliable bypass power supply for a relay protection device and automation equipment by utilizing the equipment, ensures that the device reliably supplies power, and is used for dismantling an old direct current power supply cable, connecting the old direct current power supply cable and completing direct current system load migration. The high-pass diode is connected with a power supply wire coil, a branch circuit connecting plug, a main power supply connecting plug and a branch circuit connecting wire. One end of a wire of the power supply wire disc is connected to a standby air-open terminal of the direct-current system feeder screen through a main power supply connecting plug; the two-core aviation plug of the main power supply is connected with the other end of the wire coil wire and can be connected to a two-core aviation socket of the main power supply of the equipment to provide direct-current power supply for the equipment; the air switch is connected in series with the main power supply loop and each branch circuit, is in a disconnected state before use, and isolates the main power supply and the branch circuits; the LED indicator lamps are connected in parallel to each branch circuit and can indicate whether the connecting plug is reliably connected with the relay protection device and the power terminal of the automation equipment or not; the high-pass diode can supply power to the relay protection device and the one-way bypass of the automation equipment through load current, and prevents the direct current system from being influenced by the circulation when two sets of direct current system ring networks are used; the branch circuit two-core aviation socket is used for connecting branch circuit connecting wires with the aviation plug and is used for connecting a relay protection device and an automatic equipment power supply terminal with the equipment.
Compared with the prior art, the beneficial effects are: the utility model can improve the transformation efficiency of the direct current system of the transformer substation, and eliminate the waiting time waste in the power failure process of primary equipment; the risk that the primary equipment is out of protection due to power failure of the protection device is effectively reduced; manpower cost is saved, two operators are required to operate when primary equipment is powered off, the tool can be used for operating without the need of powering off the primary equipment, and certain threat can be caused to the stability of a power grid when the primary equipment is powered off; the standardization of the operation tool and the standardization of the acceptance check operation are realized.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the circuit principle of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
As shown in fig. 1 and 2, the dc system load transfer device includes a distribution box 1, an air switch 2 disposed on the distribution box 1, a branch two-core aviation socket 3, an LED indicator 4, and a main power two-core aviation socket 5;
the direct current system load transfer device further comprises a power supply wire tray mechanism and a branch connection mechanism, wherein the power supply wire tray mechanism and the branch connection mechanism are arranged outside the power distribution box 1 and can be connected with the power distribution box 1.
The two-core aviation socket 5 of the main power supply is arranged on the side wall of the distribution box 1.
The power supply wire disc mechanism comprises a power supply wire disc 8, a main power supply two-core aviation plug 6, a power supply lead 7 and a main power supply connecting plug 10, wherein the power supply lead 7 is wound on the power supply wire disc 8, one end of the power supply lead 7 is connected with the main power supply two-core aviation plug 6, the other end of the power supply lead is connected with the main power supply connecting plug 10, and the main power supply two-core aviation plug 6 is connected with the main power supply two-core aviation socket 5 in a plugging mode.
The power supply wire disc 8 is a disc, and a support is arranged at the bottom of the disc.
The branch connecting mechanism comprises a branch connecting lead 11 and a branch connecting plug 9 connected with the branch connecting lead 11.
The upper part of the distribution box 1 is also provided with a box cover 12. The box cover 12 is hinged with the distribution box 1.
As shown in fig. 2, the circuit includes a bypass LED indicator 100, an air switch 200, and a high pass diode 300.
As in fig. 1 and 2, the working principle is as follows: the device can be reliably connected into a relay protection device and a direct current power supply terminal of automation equipment in operation, and provides a reliable bypass power supply for the device, so that the purposes of removing or adjusting an old direct current system power supply cable and connecting a new direct current system power supply cable are achieved. And the power supply wire coil 8 is used for connecting the device to a direct current feeder screen and providing a direct current power supply for the device. One end of a branch connecting wire 11 is connected with a connecting jack of the distribution box 1 through an aviation plug, and a branch connecting plug 9 at the other end can be fastened on an air switch connecting terminal of the relay protection device, so that a reliable bypass power supply is provided for the relay protection device and the automation equipment. Air switch 2 is in the off-state before using, and when branch connection plug 9 inserts electrified relay protection device and automation equipment power supply terminal, the bright positive negative pole of instruction of emitting diode pilot lamp inserts correctly, plays and prevents mistake access effect, drops into air switch 2 when main power indicator, branch power indicator are bright, realizes the bypass power supply. The high-pass diode 300 can prevent the circulation current from occurring when the bypass power supply voltage is high and the relay protection device and the automation equipment power supply voltage is low.
The power supply wire coil 8 provides a telescopic wire, one end of the power supply wire coil is connected to the power distribution box main power supply two-core aviation socket 5 through the main power supply two-core aviation plug 6, and the other end of the power supply wire coil is connected to a standby air-break wiring terminal of the direct current system feeder screen through the main power supply connecting plug 10 during working, so that power is provided for the power distribution box 1. The direct current main power supply connected to the distribution box 1 is divided into a plurality of branches through the air switch 2, each branch is connected to the two-core aviation socket 3 of the corresponding branch, and the on-off of the branches can be controlled through the air switch 2. The DC main power supply is connected with a light emitting diode in parallel and used for monitoring the polarity of the main power supply. The diode of each branch is used for monitoring whether a branch connecting plug connected with a relay protection device and a power terminal of the automation equipment is reliably connected, and simultaneously, whether the polarity of the plug connection is correct can be monitored, and when the branch light-emitting diode is bright, an air switch can be switched in, so that short-circuit faults caused by misoperation can be prevented.
The utility model discloses a concrete application as follows: the air switch of the air branch is disconnected before the use, a main power supply connecting plug at one end of a wire coil is connected into a standby air switch wiring terminal of a new direct-current screen and an old direct-current screen to provide power for a distribution box, then the equipment branch connecting plug is connected to a power terminal of an operating relay protection device and an automatic equipment, when a light-emitting diode corresponding to the branch is on and a main power supply light-emitting diode is on, the polarity of the main power supply is the same as that of the branch, the air switch can be switched on, a bypass power supply is provided for the relay protection device and the automatic equipment, then an old direct-current power supply cable can be detached, a new power supply cable is connected, and the relay protection device is prevented from.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. The direct-current system load transfer equipment comprises a power distribution box (1), an air switch (2) arranged on the power distribution box (1), a branch circuit two-core aviation socket (3), an LED indicator lamp (4) and a main power supply two-core aviation socket (5); the method is characterized in that: the direct current system load migration equipment further comprises a power supply wire coil mechanism and a branch connection mechanism, wherein the power supply wire coil mechanism and the branch connection mechanism are arranged outside the distribution box (1) and can be connected with the distribution box (1);
the air switch (2), the branch circuit two-core aviation socket (3) and the LED indicator lamp (4) are all arranged on the upper surface of the distribution box (1);
the upper part of the distribution box (1) is also provided with a box cover (12);
the box cover (12) is hinged with the distribution box (1).
2. The direct current system load migration apparatus according to claim 1, wherein: the air switch (2), the branch circuit two-core aviation socket (3) and the LED indicating lamps (4) are all in a plurality of numbers.
3. The direct current system load migration apparatus according to claim 2, wherein: the main power supply two-core aviation socket (5) is arranged on the side wall of the distribution box (1).
4. The direct current system load migration apparatus according to claim 1, wherein: the power supply line dish mechanism include power supply line dish (8), two core aviation plugs of total power (6), power conductor (7), total power connection plug (10), power conductor (7) winding on power supply line dish (8), two core aviation plugs of total power (6) are connected to power conductor (7) one end, total power connection plug (10) are connected to the other end, two core aviation plugs of total power (6) are pegged graft and are held two core aviation socket (5).
5. The direct current system load migration apparatus according to claim 4, wherein: the power supply wire disc (8) is a disc, and a support is arranged at the bottom of the disc.
6. The direct current system load migration apparatus according to claim 1, wherein: the branch connecting mechanism comprises a branch connecting lead (11) and a branch connecting plug (9) connected with the branch connecting lead (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921999257.7U CN211579596U (en) | 2019-11-18 | 2019-11-18 | DC system load migration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921999257.7U CN211579596U (en) | 2019-11-18 | 2019-11-18 | DC system load migration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211579596U true CN211579596U (en) | 2020-09-25 |
Family
ID=72531299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921999257.7U Active CN211579596U (en) | 2019-11-18 | 2019-11-18 | DC system load migration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211579596U (en) |
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2019
- 2019-11-18 CN CN201921999257.7U patent/CN211579596U/en active Active
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