CN214122422U - Switching device for realizing storage battery charging and discharging test - Google Patents
Switching device for realizing storage battery charging and discharging test Download PDFInfo
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- CN214122422U CN214122422U CN202022754756.9U CN202022754756U CN214122422U CN 214122422 U CN214122422 U CN 214122422U CN 202022754756 U CN202022754756 U CN 202022754756U CN 214122422 U CN214122422 U CN 214122422U
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Abstract
The application discloses realize experimental auto-change over device of battery charge-discharge includes: working storage battery pack and standby storage battery pack; the working storage battery pack is connected to the main circuit through a first switch; the standby storage battery pack is connected to the main circuit through a second switch; the working storage battery pack is connected with the storage battery discharge test circuit through a third switch and is connected with the storage battery charge test circuit through a fourth switch; and the third switch and the fourth switch are both positioned on one side of the first switch close to the working storage battery pack. The structure can ensure that two groups of storage batteries are connected in parallel for a short time in the storage battery switching process of a user, and the direct current bus is ensured to be supplied with power by the storage battery pack all the time, so that the direct current voltage loss risk caused by the loss of a storage battery power supply in the storage battery switching process is avoided, and the power failure probability in a transformer substation is reduced. The switching device for the storage battery charge and discharge test can reduce the direct current voltage loss risk, improve the switching speed of the storage battery and improve the working efficiency of the charge and discharge test.
Description
Technical Field
The utility model relates to a power grid transformer substation technical field, concretely relates to realize experimental auto-change over device of battery charge-discharge.
Background
The transformer substation is a main intermediate link of power supply, and a plurality of control devices in the transformer substation need direct current power supply, so that each transformer substation is required to be provided with a storage battery, so that the transformer substation can still be supplied with direct current power supplied by the storage battery under the condition of mains supply outage, and a remote control system can continuously monitor the transformer substation remotely. Especially, the existing unattended substation is the main form in the power grid system, and for the substation, the problem of ensuring the state of the substation to be always in the remote monitoring of the control center is very important.
For a substation, a storage battery checking charge and discharge test is the only item of forced periodic inspection for a storage battery pack, and is also the best method for checking whether the storage battery capacity is sufficient. The requirements of general management regulations for transformer operation and maintenance of national grid company are as follows: the newly installed battery pack needs to be subjected to a full-check charge-discharge test once in two years after 4 years of operation and then once every year.
Because the connection between the storage battery and the main circuit needs to be disconnected in the storage battery checking charge-discharge test, a storage battery pack is arranged for a general transformer substation, and a group of storage batteries are used for standby; the problem of direct current voltage loss caused by the loss of a storage battery power supply of a transformer substation can be caused by improper switching between the working storage battery pack and the standby storage battery pack.
The storage battery switching device is convenient and reliable and has short working period and large maintenance amount aiming at the charge-discharge test of the storage battery pack. How to solve the above problems in an effective manner has become an important issue.
SUMMERY OF THE UTILITY MODEL
The application provides a realize experimental auto-change over device of battery charge-discharge to solve the direct current that exists in the current battery switching process and lose the direct current that causes and lose the pressure risk.
The application provides a switching device for realizing a storage battery charge-discharge test, which comprises a working storage battery pack and a standby storage battery pack; the working storage battery pack is connected to the main circuit through a first switch; the standby storage battery pack is connected to the main circuit through a second switch; the working storage battery pack is connected with the storage battery discharge test circuit through a third switch and is connected with the storage battery charge test circuit through a fourth switch; and the third switch and the fourth switch are both positioned on one side of the first switch close to the working storage battery pack.
Optionally, a first voltage or current detection meter is arranged between the first switch and the working battery pack.
Optionally, a second voltage or current detection meter is arranged between the second switch and the working battery pack.
Optionally, the main circuit is provided with a third voltage or current detection meter.
Optionally, the first switch, the second switch, the third switch, and the first voltage or current detection meter, the second voltage or current detection meter, and the third voltage or current detection meter are disposed on a surface of the switching device housing for operation and observation; and the surface of the switching device shell is also provided with a working storage battery terminal, a standby storage battery terminal and a battery output terminal. The working storage battery pack and the standby storage battery pack can be arranged in the switching device shell, and at the moment, the battery output binding post is used for connecting out direct current output by the storage battery pack. The working storage battery pack and the standby storage battery pack can also be arranged outside the shell of the switching device, and only the switch and the detection meter are installed in the shell of the switching device through the connection of the working storage battery terminal and the standby storage battery terminal.
Optionally, a spare storage battery pack and a discharge instrument serving as a discharge test circuit are arranged on the switching device body.
Compared with the prior art, the utility model has the advantages of it is following:
the application provides a switching device for realizing a storage battery charge-discharge test, which comprises a working storage battery pack and a standby storage battery pack; the working storage battery pack is connected to the main circuit through a first switch; the standby storage battery pack is connected to the main circuit through a second switch; the working storage battery pack is connected with the storage battery discharge test circuit through a third switch and is connected with the storage battery charge test circuit through a fourth switch; and the third switch and the fourth switch are both positioned on one side of the first switch close to the working storage battery pack. The structure can ensure that two groups of storage batteries are connected in parallel for a short time in the storage battery switching process of a user, and the direct current bus is ensured to be supplied with power by the storage battery pack all the time, so that the direct current voltage loss risk caused by the loss of a storage battery power supply in the storage battery switching process is avoided, and the power failure probability in a transformer substation is reduced. Therefore, the switching device for the storage battery charge-discharge test can reduce the direct-current voltage loss risk, improve the on-off speed of the storage battery and improve the working efficiency of the charge-discharge test.
Drawings
Fig. 1 is a schematic structural diagram of a switching device for implementing a battery charge-discharge test according to an embodiment of the present application.
Fig. 2 is a schematic circuit diagram of a switching device for implementing a battery charge/discharge test according to an embodiment of the present application.
Detailed Description
The working storage battery pack is used for ensuring that the transformer substation can normally work when alternating current is in power failure, so that direct current voltage loss of the transformer substation caused by the power failure of the alternating current is avoided, a relay protection device of the transformer substation is refused to operate, a motion system cannot realize four remote control (remote measurement, remote signaling, remote control and remote regulation), and the transformer substation is dispatched to lose monitoring and control; therefore, in the process of performing charge and discharge tests on the working storage battery pack, the working storage battery pack needs to be switched to a standby storage battery pack to supply power to the substation system. The application provides a realize experimental auto-change over device of battery charge-discharge and is used for solving this problem.
The switching device for the battery charge/discharge test will be described in detail below.
The embodiment of the present application provides a switching device for implementing a battery charge and discharge test, please refer to fig. 1, where fig. 1 is a schematic structural diagram of the switching device for implementing the battery charge and discharge test provided in the embodiment of the present application; fig. 2 is a schematic circuit diagram of the switching device for realizing the battery charge/discharge test. This realize experimental auto-change over device of battery charge-discharge includes: the secondary battery pack comprises an active battery pack 11, a spare battery pack 12, a first switch QF1, a second switch QF2, a third switch QF3 and a fourth switch QF 4.
In the embodiment of the application, the method comprises the following steps: working storage battery pack and standby storage battery pack; the working battery pack 11 is connected to the main circuit through a first switch QF 1; the spare battery pack 12 is connected to the main circuit through a second switch QF 2; the main circuit is a direct current circuit for supplying power to substation equipment by a storage battery; the working storage battery pack 11 is connected with a storage battery discharge test circuit through a third switch QF3 and is connected with a storage battery charge test circuit through a fourth switch QF 4; in this embodiment, the battery discharge test circuit is a discharge instrument 13, and the discharge instrument is a device designed for daily maintenance, capacity detection and testing of the load capacity of the dc power supply for the battery pack (24V, 48V, 110V, 220V, 400V, 600V) in the power, telecommunication, railway, battery manufacturing enterprises or other industries, and may be a universal discharge instrument device. The third switch QF3 and the fourth switch QF4 are both located on the side of the first switch QF1 close to the working battery pack 11.
In order to monitor the external power supply of the battery pack, a first voltage or current detection meter 101 is provided between the first switch QF1 and the working battery pack 11. Fig. 1 and 2 show a case where the voltage detection tables are arranged in parallel; the current detection meter can also be arranged in a series connection mode, and the detection meter is used for detecting the external power supply condition of the storage battery no matter what type of detection meter is arranged. The voltage or current detection tables mentioned below are the same and are not described again.
Similarly, a second voltage or current detection meter 102 is provided between the second switch QF2 and the active battery pack 11. Fig. 1 and 2 show a case where a voltage detection table is provided.
Similarly, the main circuit is provided with a third voltage or current detection table 103. Fig. 1 and 2 show a case where a voltage detection table is provided.
The above equipment can be arranged in a chassis to form a complete equipment; one possible solution is that the first switch QF1, the second switch QF2, the third switch QF3, and the first voltage or current detecting table 101, the second voltage or current detecting table 102, and the third voltage or current detecting table 103 are disposed on the housing surface of the switching device chassis for operation and observation; and the surface of the shell is also provided with a working storage battery terminal, a standby storage battery terminal and a battery output terminal. The working storage battery pack 11, the standby storage battery pack 12, the discharging instrument 13 and the like can be arranged in the switching device body, and at the moment, the battery output terminal is used for connecting out direct current output by the storage battery pack. The working battery pack 11 and the standby battery pack 12 can also be arranged outside the switching device body, and are connected through the working battery terminal and the standby battery terminal, and only the switches, the detection meters and the discharge instrument 13 are installed in the switching device body. Another reasonable option is that a spare storage battery pack 12 is arranged in the switching device case, when a substation equipped with a single storage battery pack needs to perform a storage battery charging and discharging test, the switching device is directly carried to the site to perform the test, and meanwhile, the spare storage battery pack 12 is provided.
Specifically, referring to fig. 2, when the working battery pack 11 is connected to the main circuit, the circuit switch QF0 is first turned on, and the main circuit is provided with the third voltage or current detection table 103, so that whether the main circuit is working normally can be determined according to the third voltage or current detection table 103. The working battery pack 11 is connected to the main circuit by closing the first switch QF 1; a first voltage or current detection table 101 is arranged between the first switch QF1 and the working battery pack 11, and whether the working battery pack 11 is normally connected can be judged according to the first voltage or current detection table 101.
When the operating battery pack 11 is subjected to the charge-discharge test, the following process may be performed with reference to fig. 2:
step 1: the spare battery pack 12 is connected to the main circuit by closing the second switch QF 2; a second voltage or current detection table 102 is arranged between the second switch QF2 and the backup battery pack 12, and whether the backup battery pack 12 is normally connected can be determined according to the second voltage or current detection table 102.
Step 2: the working battery pack 11 is disconnected from the main circuit by disconnecting the first switch QF 1;
and step 3: the working storage battery pack 11 disconnects the storage battery charging test circuit by disconnecting the fourth switch QF 4;
and 4, step 4: the working storage battery pack 11 is connected with a storage battery discharge test circuit by closing the third switch QF 3;
and 5: after the discharging is finished, the working storage battery pack 11 disconnects the storage battery discharging test circuit by disconnecting the third switch QF 3; the working storage battery pack 11 is connected with a storage battery charging test circuit by closing the fourth switch QF 4;
step 6: after the working storage battery pack 11 is charged, the working storage battery pack 11 disconnects the storage battery charging test circuit by disconnecting the fourth switch QF 4;
and 7: the working storage battery pack 11 is connected into the main circuit by closing the first switch QF1, and the working storage battery pack 11 is recovered to be connected into the main circuit;
and 8: the backup battery pack 12 is detached from the main circuit by opening the second switch QF 2.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make modifications and changes without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a realize experimental auto-change over device of battery charge-discharge which characterized in that includes: working storage battery pack and standby storage battery pack; the working storage battery pack is connected to the main circuit through a first switch; the standby storage battery pack is connected to the main circuit through a second switch; the working storage battery pack is connected with the storage battery discharge test circuit through a third switch and is connected with the storage battery charge test circuit through a fourth switch; and the third switch and the fourth switch are both positioned on one side of the first switch close to the working storage battery pack.
2. The switching device for realizing the charge-discharge test of the storage battery according to claim 1, wherein a first voltage or current detection meter is arranged between the first switch and the working battery pack.
3. The switching device for realizing the charge-discharge test of the storage battery according to claim 2, wherein a second voltage or current detection meter is arranged between the second switch and the working battery pack.
4. The switching device for realizing the charge-discharge test of the storage battery according to claim 3, wherein the main circuit is provided with a third voltage or current detection meter.
5. The switching device for realizing the charge and discharge test of the storage battery according to claim 4, wherein the first switch, the second switch and the first voltage or current detection meter, the second voltage or current detection meter and the third voltage or current detection meter are arranged on the surface of the shell of the switching device body for operation and observation; and the surface of the shell is also provided with a working storage battery terminal, a standby storage battery terminal and a battery output terminal.
6. The switching device for realizing the charge and discharge test of the storage battery according to claim 4, wherein a spare storage battery pack and a discharge instrument as a discharge test circuit are arranged on the switching device body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022754756.9U CN214122422U (en) | 2020-11-24 | 2020-11-24 | Switching device for realizing storage battery charging and discharging test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022754756.9U CN214122422U (en) | 2020-11-24 | 2020-11-24 | Switching device for realizing storage battery charging and discharging test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214122422U true CN214122422U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022754756.9U Active CN214122422U (en) | 2020-11-24 | 2020-11-24 | Switching device for realizing storage battery charging and discharging test |
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| Country | Link |
|---|---|
| CN (1) | CN214122422U (en) |
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- 2020-11-24 CN CN202022754756.9U patent/CN214122422U/en active Active
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