CN217692778U - Automatic throw-in device for direct current bus power loss - Google Patents
Automatic throw-in device for direct current bus power loss Download PDFInfo
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- CN217692778U CN217692778U CN202220993099.XU CN202220993099U CN217692778U CN 217692778 U CN217692778 U CN 217692778U CN 202220993099 U CN202220993099 U CN 202220993099U CN 217692778 U CN217692778 U CN 217692778U
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Abstract
The utility model belongs to the technical field of power-off automatic input devices, in particular to a power-off automatic input device for a direct-current bus; the device comprises a device shell, wherein a central control device is arranged in the device shell, the central control device is electrically connected with a first voltage transmitter and a second voltage transmitter, a voltage comparator is arranged in the central control device, a working power supply is also arranged in the device shell, the working power supply is respectively electrically connected with the first voltage transmitter, the second voltage transmitter and the central control device, a communicating bus is also arranged in the device shell, a first silicon controlled rectifier and a first diode are arranged in the middle of one communicating bus, and a second silicon controlled rectifier and a second diode are arranged in the middle of the other communicating bus; the utility model discloses can realize each other of two sets of DC power supply for reserve to effectively solve because of the problem that battery trouble leads to the generating line to lose the electricity, improve the reliability of direct current system operation, avoid causing serious equipment damage incident because DC power supply loses.
Description
Technical Field
The utility model belongs to the technical field of lose the electric automatic input device, concretely relates to direct current generating line loses electric automatic input device.
Background
The direct-current power supply system of the transformer substation provides power for the protection, control and automatic device, and is the premise of correct action of relay protection; when the charging device normally operates, the charging device bears frequent load and simultaneously charges the storage battery pack to supplement self-discharge of the storage battery pack so as to enable the storage battery pack to be in a standby state in a full-capacity state, and under the condition of system failure, the charging device is unstable in work, and the storage battery pack continues to provide direct-current power supply for the load, so that the protection and the normal work of the automatic device can be guaranteed; at present, 220 KV transformer stations are all configured by double sets of direct currents, and the two sets of direct currents are operated in a splitting mode; in recent years, a plurality of substation direct-current power supply buses lose power, the protection device loses power, and only the far backup protection action is performed, so that serious equipment accidents are caused; two sets of direct current power supply systems of the transformer substation are not allowed to run in parallel for a long time, each set of direct current power supply of the transformer substation, whether being a 220 KV transformer substation or a 110 KV transformer substation, is independently run when being normal, and because the reason that the direct current system loses the power supply is mainly the problem of a storage battery, a certain set of direct current system is likely to lose the power supply during running; for a 220 KV transformer substation, the protection of a 220 KV system is in double-set configuration, one set of direct current system is lost (namely one set of protection is lost), the other set of direct current system runs normally (the other set of protection runs normally), and faults can be removed correctly when the faults occur; for a 110 kV transformer substation, the protection is in a single-set configuration, partial primary equipment is out of protection due to loss of a direct-current power supply, the protection is rejected and the device is out of level, and a serious equipment accident can be caused; after the transformer substation realizes the configuration of two sets of direct currents, in order to prevent serious consequences possibly caused by the loss of any set of direct current power supply, a direct current bus power-off automatic input device needs to be developed, the device is connected between two direct current buses, the two sets of direct current power supplies are mutually standby, the problem of bus power-off caused by storage battery faults is effectively solved, the running reliability of a direct current system is improved, and serious equipment damage events caused by the loss of the direct current power supplies are avoided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's is not enough, and provide a rational in infrastructure, convenient to use's direct current generating line loses the automatic device that drops into of electricity, inserts the device between two sections direct current generating lines, can realize each other of two sets of DC power supply for reserve to effectively solve because of the problem that the battery trouble leads to the generating line to lose the electricity, improve the reliability of direct current system operation, avoid because DC power supply loses and cause serious equipment damage incident.
The purpose of the utility model is realized like this: the direct current bus power-loss automatic input device comprises a device shell, wherein a central control device is arranged in the device shell, the central control device is electrically connected with a first voltage transmitter and a second voltage transmitter, a voltage comparator is arranged in the central control device, a working power supply is also arranged in the device shell, the working power supply is respectively and electrically connected with the first voltage transmitter, the second voltage transmitter and the central control device, a communication bus is also arranged in the device shell, a first silicon controlled rectifier and a first diode are arranged in the middle of one communication bus, a second silicon controlled rectifier and a second diode are arranged in the middle of the other communication bus, the connection directions of the first diode and the second diode are opposite, the first voltage transmitter is connected with the left end part of the communication bus, and the second voltage transmitter is connected with the right end part of the communication bus; the device comprises a shell, a communication bus and a device shell, wherein the device shell is provided with a front end face and a rear end face, the front end face of the device shell is provided with a front end face and a rear end face, the front end face is provided with a front end and a rear end face, the rear end face is provided with a rear end face and a rear end face, the front end face is provided with a front end section bus inlet and outlet port, the rear end face is provided with a rear end section bus inlet and outlet port, the front end section bus inlet and outlet port is connected with the front end of the communication bus, the front end section bus inlet and outlet port is connected with the rear end of the communication bus.
The device is characterized in that an I section bus voltmeter and an II section bus voltmeter are arranged on the front end face of the shell, the I section bus voltmeter is electrically connected with the first voltage transmitter, and the II section bus voltmeter is electrically connected with the second voltage transmitter.
The central control device is electrically connected with one of the communicating buses through a first protection resistor, and the central control device is electrically connected with the other communicating bus through a second protection resistor.
The device shell is characterized in that a device nameplate is further arranged on the front end face of the device shell, and the device nameplate is arranged on the lower portion of the front end face of the device shell.
The lower part of the rear end face of the device shell is provided with an end face heat dissipation opening, and the lower part of the side face of the device shell is provided with a side face heat dissipation opening.
A heat sink is disposed inside the device housing, and various electrical components inside the device housing are disposed on the heat sink.
And the communicating bus is also provided with a working switch which is a linked switch capable of cutting off and closing the two communicating buses.
The working power supply is also electrically connected with the communicating bus.
The utility model has the advantages that: the utility model relates to a direct current bus power-off automatic input device, a central control device is electrically connected with a first voltage transmitter and a second voltage transmitter, a voltage comparator is arranged in the central control device, a working power supply is respectively and electrically connected with the first voltage transmitter, the second voltage transmitter and the central control device, the power supplies can be provided for the two, a first silicon controlled rectifier and a first diode are arranged in the middle of one communicating bus, a second silicon controlled rectifier and a second diode are arranged in the middle of the other communicating bus, the connecting directions of the first diode and the second diode are opposite, a first voltage transmitter is connected with the left end part of the communicating bus, a second voltage transmitter is connected with the right end part of the communicating bus, an external set I of direct current power supplies can be connected with the left end part of the communicating bus through a set I bus inlet and outlet port, an external set II of direct current power supplies can be connected with the right end part of the communicating bus through a set II bus inlet and outlet port, the first voltage transmitter and the second voltage transmitter respectively detect the working voltages of the set I of direct current power supplies and the set II of direct current power supplies and transmit the processed voltage signals to a central control device, and a voltage comparator in the central control device judges the voltages, under normal conditions, the direct current voltages of the two sets of direct current power supplies are approximately equal, the voltage comparator does not output, the corresponding first silicon controlled rectifier and the second silicon controlled rectifier are not conducted, no relation exists between the two sets of direct currents, when the abnormal voltage of the set II of direct current power supplies is reduced, the voltage comparator measures that the voltage difference value of the direct current buses at two ends reaches a certain threshold value, the first silicon controlled rectifier and the second silicon controlled rectifier are conducted through the output of the voltage comparator, the bus is communicated and conducted, and the set I direct current power supply supplies power to the set II direct current power supplies so that the set II direct current power supplies do not lose power; the first silicon controlled rectifier is connected with the first diode in series, and the second silicon controlled rectifier is connected with the second diode in series, so that the connected bus can only be conducted in a single direction, and the series-parallel connection of two sets of direct current power supply systems can be effectively prevented when elements are damaged; the utility model discloses a direct current generating line loses electric automatic input device can realize each other of two sets of DC power supply for reserve to effectively solve because of the problem that the battery trouble leads to the generating line to lose the electricity, improve the reliability of direct current system operation, avoid because DC power supply loses and causes serious equipment damage incident.
Drawings
Fig. 1 is a front view of the automatic direct current bus power-off switching device of the present invention.
Fig. 2 is a rear view structure diagram of the automatic direct current bus power-off switching device of the present invention.
Fig. 3 is the inside heat radiation structure schematic diagram that the automatic input device of the utility model discloses direct current bus loses electric and looks sideways at.
Fig. 4 is the internal structure and schematic diagram of the automatic input device for the power failure of the dc bus of the present invention.
In the figure: 1. the device comprises a shell 2, a first-section bus voltmeter 3, a second-section bus voltmeter 4, a device nameplate 5, a first-section bus inlet and outlet port 6, a second-section bus inlet and outlet port 7, an end face heat dissipation port 8, a side face heat dissipation port 9, a cooling fin 10, a communication bus 11, a working switch 12, a first protective resistor 13, a first controllable silicon 14, a second diode 15, a first diode 16, a second controllable silicon 17, a second protective resistor 18, a second voltage transmitter 19, a central control device 20, a working power supply 21 and a first voltage transmitter.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1-4, the automatic direct current bus power-off switching device includes a device housing 1, a central control device 19 is disposed inside the device housing 1, the central control device 19 is electrically connected to a first voltage transmitter 21 and a second voltage transmitter 18, a voltage comparator is disposed inside the central control device 19, a working power supply 20 is further disposed inside the device housing 1, the working power supply 20 is electrically connected to the first voltage transmitter 21, the second voltage transmitter 18 and the central control device 19, a communication bus 10 is further disposed inside the device housing 1, a first thyristor 13 and a first diode 15 are disposed in a middle of one of the communication buses 10, a second thyristor 16 and a second diode 14 are disposed in a middle of the other communication bus 10, a connection direction of the first diode 15 and the second diode 14 is opposite, the first voltage transmitter 21 is connected to a left end of the communication bus 10, and the second voltage 18 is connected to a right end of the communication bus 10; the device comprises a device shell 1 and is characterized in that a first-section bus inlet and outlet port 5 and a second-section bus inlet and outlet port 6 are arranged on the rear end face of the device shell 1, the first-section bus inlet and outlet port 5 is connected with the left end of a communication bus 10, and the second-section bus inlet and outlet port 6 is connected with the right end of the communication bus 10.
The utility model discloses a direct current bus loses electric automatic input device, central control unit 19 electricity is connected with first voltage transmitter 21 and second voltage transmitter 18, be provided with the voltage comparator in the central control unit 19, operating power supply 20 is connected with first voltage transmitter 21, second voltage transmitter 18 and central control unit 19 electricity respectively, can provide the power for them, the middle part of a communicating bus 10 is provided with first silicon controlled rectifier 13 and first diode 15, the middle part of another communicating bus 10 is provided with second silicon controlled rectifier 16 and second diode 14, the direction of connection of first diode 15 and second diode 14 is opposite, first voltage transmitter 21 is connected with the left end portion of communicating bus 10, second voltage transmitter 18 is connected with the right end portion of communicating bus 10, external I set of direct current power supply accessible I section bus advances exit port 5 and is connected with the left end of communicating bus 10, an external set II of direct current power supply can be connected with the right end of a communication bus 10 through a section II bus inlet and outlet port 6, a first voltage transmitter 21 and a second voltage transmitter 18 respectively detect the working voltage of the set I of direct current power supply and the set II of direct current power supply and transmit the processed voltage signal to a central control device 19, a voltage comparator in the central control device 19 judges the voltage, under the normal condition, the direct current voltages of the two sets of direct current power supply are approximately equal, the voltage comparator does not output, the corresponding first silicon controlled rectifier 13 and the second silicon controlled rectifier 16 are not conducted, no relation exists between the two sets of direct currents, when the abnormal voltage reduction of the set II of direct current power supply occurs, the voltage comparator outputs after the voltage difference value of the direct current buses at two ends reaches a certain threshold value, the first silicon controlled rectifier 13 and the second silicon controlled rectifier 16 are conducted, the communication bus 10 is conducted, the I set of direct current power supply supplies power to the II set of direct current power supply, so that the II set of direct current power supply does not lose power; the first controllable silicon 13 is connected with the first diode 15 in series, and the second controllable silicon 16 is connected with the second diode 14 in series, so that the communication bus 10 can only be conducted in a single direction, and the series-parallel connection of two direct current power supply systems can be effectively prevented when elements are damaged; the utility model discloses a direct current bus loses electric automatic input device, can realize each other of two sets of DC power supply for reserve to effectively solve because of the battery trouble leads to the problem that the generating line loses electric, improve the reliability of direct current system operation, avoid because DC power supply loses and causes serious equipment damage incident.
Example 2
As shown in fig. 1-4, the automatic direct current bus power-off switching device includes a device housing 1, a central control device 19 is disposed inside the device housing 1, the central control device 19 is electrically connected to a first voltage transmitter 21 and a second voltage transmitter 18, a voltage comparator is disposed inside the central control device 19, a working power supply 20 is further disposed inside the device housing 1, the working power supply 20 is electrically connected to the first voltage transmitter 21, the second voltage transmitter 18 and the central control device 19, a communication bus 10 is further disposed inside the device housing 1, a first thyristor 13 and a first diode 15 are disposed in a middle of one of the communication buses 10, a second thyristor 16 and a second diode 14 are disposed in a middle of the other communication bus 10, a connection direction of the first diode 15 and the second diode 14 is opposite, the first voltage transmitter 21 is connected to a left end of the communication bus 10, and the second voltage 18 is connected to a right end of the communication bus 10; the device comprises a device shell 1 and is characterized in that a first-section bus inlet and outlet port 5 and a second-section bus inlet and outlet port 6 are arranged on the rear end face of the device shell 1, the first-section bus inlet and outlet port 5 is connected with the left end of a communication bus 10, and the second-section bus inlet and outlet port 6 is connected with the right end of the communication bus 10.
For better effect, be provided with I section busbar voltmeter 2 and II section busbar voltmeter 3 on the preceding terminal surface of device casing 1, I section busbar voltmeter 2 with first voltage transmitter 21 is electric is connected mutually, II section busbar voltmeter 3 with second voltage transmitter 18 is electric is connected mutually, two mains voltage of convenient monitoring.
For better effect, the central control device 19 is electrically connected with one of the communication buses 10 through a first protection resistor 12, and the central control device 19 is electrically connected with the other communication bus 10 through a second protection resistor 17, so that the central control device 19 is effectively protected.
For better effect, a device nameplate 4 is further arranged on the front end face of the device shell 1, and the device nameplate 4 is arranged on the lower portion of the front end face of the device shell 1, so that device information can be conveniently displayed.
For better effect, the lower part of the rear end face of the device shell 1 is provided with an end face heat dissipation port 7, and the lower part of the side face of the device shell 1 is provided with a side face heat dissipation port 8, so that heat dissipation is facilitated.
For better effect, a heat sink 9 is provided inside the device case 1, and each electrical component inside the device case 1 is provided on the heat sink 9, thereby improving heat dissipation efficiency.
For better effect, the communication bus 10 is further provided with a working switch 11, and the working switch 11 is a linked switch capable of cutting off and closing the two communication buses 10 to protect the device.
For better effect, the working power supply 20 is also electrically connected to the communication bus bar 10 to be charged by the power supply.
The utility model discloses a direct current bus loses electric automatic input device, central control unit 19 electricity is connected with first voltage transmitter 21 and second voltage transmitter 18, be provided with the voltage comparator in the central control unit 19, working power supply 20 is connected with first voltage transmitter 21, second voltage transmitter 18 and central control unit 19 electricity respectively, can provide the power for them, the middle part of one intercommunication generating line 10 is provided with first silicon controlled rectifier 13 and first diode 15, the middle part of another intercommunication generating line 10 is provided with second silicon controlled rectifier 16 and second diode 14, the direction of connection of first diode 15 and second diode 14 is opposite, first voltage transmitter 21 is connected with the left end of intercommunication generating line 10, second voltage transmitter 18 is connected with the right end of intercommunication generating line 10, external I set of direct current power supply accessible I section generating line business turn over port 5 is connected with the left end of intercommunication generating line 10, an external set II of direct current power supply can be connected with the right end of a communication bus 10 through a section II bus inlet and outlet port 6, a first voltage transmitter 21 and a second voltage transmitter 18 respectively detect the working voltage of the set I of direct current power supply and the set II of direct current power supply and transmit the processed voltage signal to a central control device 19, a voltage comparator in the central control device 19 judges the voltage, under the normal condition, the direct current voltages of the two sets of direct current power supply are approximately equal, the voltage comparator does not output, the corresponding first silicon controlled rectifier 13 and the second silicon controlled rectifier 16 are not conducted, no relation exists between the two sets of direct currents, when the abnormal voltage reduction of the set II of direct current power supply occurs, the voltage comparator outputs after the voltage difference value of the direct current buses at two ends reaches a certain threshold value, the first silicon controlled rectifier 13 and the second silicon controlled rectifier 16 are conducted, the communication bus 10 is conducted, the I set of direct current power supply supplies power to the II set of direct current power supply, so that the II set of direct current power supply does not lose power; the first controllable silicon 13 is connected with the first diode 15 in series, and the second controllable silicon 16 is connected with the second diode 14 in series, so that the communication bus 10 can only be conducted in a single direction, and the series-parallel connection of two direct current power supply systems can be effectively prevented when elements are damaged; the utility model discloses a direct current bus loses electric automatic input device, can realize each other of two sets of DC power supply for reserve to effectively solve because of the battery trouble leads to the problem that the generating line loses electric, improve the reliability of direct current system operation, avoid because DC power supply loses and causes serious equipment damage incident.
Claims (8)
1. Direct current bus loses electric automatic input device, and it includes device casing (1), its characterized in that: a central control device (19) is arranged in the device shell (1), the central control device (19) is electrically connected with a first voltage transmitter (21) and a second voltage transmitter (18), a voltage comparator is arranged in the central control device (19), a working power supply (20) is further arranged in the device shell (1), the working power supply (20) is respectively and electrically connected with the first voltage transmitter (21), the second voltage transmitter (18) and the central control device (19), a communication bus (10) is further arranged in the device shell (1), a first thyristor (13) and a first diode (15) are arranged in the middle of one communication bus (10), a second thyristor (16) and a second diode (14) are arranged in the middle of the other communication bus (10), the connection directions of the first diode (15) and the second diode (14) are opposite, the transmitter (21) is connected with the left end of the communication bus (10), and the second voltage transmitter (18) is connected with the bus (10); the device is characterized in that a first-section bus inlet and outlet port (5) and a second-section bus inlet and outlet port (6) are arranged on the rear end face of the device shell (1), the first-section bus inlet and outlet port (5) is connected with the left end of the communication bus (10), and the second-section bus inlet and outlet port (6) is connected with the right end of the communication bus (10).
2. The automatic throw-in device for the direct current bus in the power failure according to claim 1, characterized in that: be provided with I section busbar voltmeter (2) and II section busbar voltmeter (3) on the preceding terminal surface of device casing (1), I section busbar voltmeter (2) with first voltage transmitter (21) electricity is connected mutually, II section busbar voltmeter (3) with second voltage transmitter (18) electricity is connected mutually.
3. The automatic throw-in device for the direct current bus in the power failure according to claim 1, characterized in that: the central control device (19) is electrically connected with one of the communication buses (10) through a first protection resistor (12), and the central control device (19) is electrically connected with the other communication bus (10) through a second protection resistor (17).
4. The automatic throw-in device for the direct current bus in the power failure according to claim 1, characterized in that: the device is characterized in that a device nameplate (4) is further arranged on the front end face of the device shell (1), and the device nameplate (4) is arranged on the lower portion of the front end face of the device shell (1).
5. The automatic direct-current bus power-loss switching device according to claim 1, characterized in that: the device is characterized in that an end face heat dissipation port (7) is formed in the lower portion of the rear end face of the device shell (1), and a side face heat dissipation port (8) is formed in the lower portion of the side face of the device shell (1).
6. The automatic throw-in device for the direct current bus in the power failure according to claim 5, characterized in that: a heat sink (9) is arranged inside the device housing (1), and each electric component inside the device housing (1) is arranged on the heat sink (9).
7. The automatic throw-in device for the direct current bus in the power failure according to claim 1, characterized in that: the communication bus (10) is also provided with a working switch (11), and the working switch (11) is a linked switch capable of cutting off and closing the two communication buses (10).
8. The automatic direct-current bus power-loss switching device according to claim 1, characterized in that: the working power supply (20) is also electrically connected with the communication bus (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220993099.XU CN217692778U (en) | 2022-04-27 | 2022-04-27 | Automatic throw-in device for direct current bus power loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220993099.XU CN217692778U (en) | 2022-04-27 | 2022-04-27 | Automatic throw-in device for direct current bus power loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217692778U true CN217692778U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220993099.XU Active CN217692778U (en) | 2022-04-27 | 2022-04-27 | Automatic throw-in device for direct current bus power loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217692778U (en) |
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2022
- 2022-04-27 CN CN202220993099.XU patent/CN217692778U/en active Active
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