Activation protection device for direct-current power supply battery

Abstract

The utility model belongs to the field of battery activation protection devices, and relates to a direct-current power supply battery activation protection device. The device is characterized in that the device comprises an AC mutual switching module (1), and a lightning arrester module (2) electrically connected with the AC mutual switching module (1); a first circuit breaker module (100) is also electrically connected with the alternating current mutual switching module (1); a high-frequency power supply module (600) is electrically connected with the first circuit breaker module (100); the fifth circuit breaker module (500) is electrically connected with a second current and voltage detection module (900); and the other end of the second current and voltage detection module (900) is electrically connected with a second battery pack module (6). The method has the advantages that the second battery pack module is protected through the circuit breaker, in the activation process of the direct-current power supply battery, a standby battery exists after alternating-current power loss and high-frequency module faults, and the reliability and safety of the activation process of the direct-current power supply battery are improved.

Description

Technical Field

[0001] The invention belongs to the field of battery activation protection devices and relates to a direct current power supply battery activation protection device. Background Art

[0002] With the widespread application of DC power supply equipment, people have higher and higher requirements for the maintenance of DC power supply systems. The maintenance of DC power supply mainly includes cleaning dust, tightening wiring, equipment monitoring and inspection, battery activation charge and discharge test, etc. Among them, battery activation charge and discharge test is the most important maintenance. Through charge and discharge test, the activity of battery is stimulated, the service life of battery is extended, the replacement cycle is extended, the cost is saved, and the standard of energy saving and environmental protection can be achieved.

[0003] The three core components of the DC system of the State Grid system substation and large and small user substations are high-frequency rectifier modules, monitoring systems and batteries. Because the system contains batteries, if the AC power supply of the substation is stable for a long time, the battery part cannot be activated by charging and discharging, and the battery capacity will gradually decrease. Therefore, the power system stipulates that new batteries must be artificially activated after 2 to 3 years of operation, that is, the batteries must be deeply charged and discharged to maintain the battery capacity as much as possible and extend the battery life.

[0004] The prior art DC power supply battery activation protection device does not have a backup battery and a corresponding monitoring device during the battery activation process, so there is a risk of power failure due to AC power failure and high-frequency module failure, resulting in low reliability and poor safety of the battery activation process. Summary of the invention

[0005] The present invention aims to solve the problem that the DC power supply battery activation protection device in the prior art has no backup battery and corresponding monitoring device during the battery activation process, so that there is a risk of power failure due to AC power failure and high-frequency module failure of the equipment, resulting in low reliability and poor safety during the battery activation process. A DC power supply battery activation protection device is proposed, which is characterized by comprising an AC mutual transfer module, and a lightning arrester module electrically connected to the AC mutual transfer module;

[0006] A first circuit breaker module is also electrically connected to the AC mutual switching module;

[0007] A high-frequency power supply module is electrically connected to the first circuit breaker module;

[0008] A second circuit breaker module is electrically connected to the high-frequency power supply module;

[0009] The second circuit breaker module is electrically connected to the third circuit breaker module and the control bus module respectively;

[0010] The third circuit breaker module is electrically connected to the fifth circuit breaker module and the fuse module respectively;

[0011] The fuse module is electrically connected to the fourth circuit breaker module and the first current and voltage detection module respectively;

[0012] A discharger module is electrically connected to the fourth circuit breaker module;

[0013] A first battery module is electrically connected to the first current and voltage detection module;

[0014] The fifth circuit breaker module is electrically connected to the second current and voltage detection module;

[0015] The other end of the second current and voltage detection module is electrically connected to the second battery module.

[0016] According to the above-mentioned DC power supply battery activation protection device, it is characterized in that:

[0017] The first circuit breaker module includes: an eleventh circuit breaker QF11, a twelfth circuit breaker QF12, a thirteenth circuit breaker QF13, a fourteenth circuit breaker QF14, and a fifteenth circuit breaker QF15;

[0018] The high-frequency power supply module includes: an eleventh rectifier U11, a twelfth rectifier U12, a thirteenth rectifier U13, a fourteenth rectifier U14, and a fifteenth rectifier U15;

[0019] The eleventh circuit breaker QF11, the twelfth circuit breaker QF12, the thirteenth circuit breaker QF13, the fourteenth circuit breaker QF14, and the fifteenth circuit breaker QF15 are electrically connected to one end of the eleventh rectifier U11, the twelfth rectifier U12, the thirteenth rectifier U13, the fourteenth rectifier U14, and the fifteenth rectifier U15 respectively;

[0020] The second circuit breaker module includes: a second circuit breaker QF2;

[0021] The other ends of the eleventh rectifier U11, the twelfth rectifier U12, the thirteenth rectifier U13, the fourteenth rectifier U14, and the fifteenth rectifier U15 are electrically connected to one end of the second circuit breaker QF2 respectively;

[0022] The control bus module includes: control bus KM;

[0023] The third circuit breaker module includes: a third circuit breaker QF3;

[0024] The other end of the second circuit breaker QF2 is electrically connected to the control bus KM and one end of the third circuit breaker QF3 respectively;

[0025] The fuse module includes: fuse FU0;

[0026] The fifth circuit breaker module includes: a fifth circuit breaker QF5;

[0027] The other end of the third circuit breaker QF3 is electrically connected to one end of the fuse FU0 and one end of the fifth circuit breaker QF5 respectively;

[0028] The fourth circuit breaker module includes: a fourth circuit breaker QF4;

[0029] The first current and voltage detection module includes: a first ammeter voltage PA1, a first resistor RA1, and a first voltmeter PV1;

[0030] The other end of the fuse FU0 is electrically connected to the fourth circuit breaker QF4, one end of the first ammeter PA1, one end of the first resistor RA1, and one end of the first voltmeter PV1 respectively;

[0031] The first resistor RA1 is electrically connected to the other end of the first ammeter PA1 and the other end of the first voltmeter PV1 respectively;

[0032] The second current and voltage detection module includes: a second ammeter voltage PA2, a second resistor RA2, and a second voltmeter PV2;

[0033] The other end of the fifth circuit breaker QF5 is electrically connected to one end of the second ammeter voltage PA2, one end of the second resistor RA2, and one end of the second voltmeter PV2;

[0034] The second resistor RA2 is electrically connected to the other ends of the second ammeter PA2 and the second voltmeter PV2;

[0035] The first battery pack module includes: a first battery pack BAT1, and the second battery pack module includes: a backup battery pack BAT2;

[0036] The first voltmeter PV1 is electrically connected to the first battery BAT1 ; the second voltmeter PV2 is electrically connected to the backup battery group BAT2 .

[0037] According to the DC power supply battery activation protection device described above, it is characterized in that the models of the eleventh circuit breaker QF11, the twelfth circuit breaker QF12, the thirteenth circuit breaker QF13, the fourteenth circuit breaker QF14 and the fifteenth circuit breaker QF15 are all GM653328-16A.

[0038] According to the DC power supply battery activation protection device described above, it is characterized in that the models of the eleventh rectifier U11, the twelfth rectifier U12, the thirteenth rectifier U13, the fourteenth rectifier U14 and the fifteenth rectifier U15 are all HD22010-3.

[0039] According to the above-mentioned DC power supply battery activation protection device, it is characterized in that: the model of the second circuit breaker QF2 is: GM32M2328R63A.

[0040] According to the above-mentioned DC power supply battery activation protection device, it is characterized in that: the model of the third circuit breaker QF3 is GM5-250G / 2 / G-250A+AX.

[0041] According to the above-mentioned DC power supply battery activation protection device, it is characterized in that: the model of the fourth circuit breaker QF4 is GM32M2300R63A.

[0042] According to the DC power supply battery activation protection device described above, it is characterized in that: the model of the fifth circuit breaker QF5 is GM5-125M / 2TM 125A.

[0043] According to the DC power supply battery activation protection device described above, it is characterized in that: the model of the first ammeter PA1 and the second ammeter PA1 are both LNF0-100A; the model of the first voltmeter PV1 and the second voltmeter PV2 are both LNF0-450A.

[0044] According to the DC power supply battery activation protection device described above, it is characterized in that: the model of the fuse FU0 is RT16-250A; the model of the first battery pack BAT1 is DJ200-2V / 200Ah, and the model of the backup battery pack BAT2 is DJM-40 / 12V.

[0045] The advantages of the present invention compared with the prior art are:

[0046] 1. The present invention protects the backup battery group BAT2 circuit through the fifth circuit breaker QF5. During the entire battery activation process, the DC system does not need to worry about the risks of AC power failure and high-frequency module failure, thereby improving the reliability and safety of the battery activation process.

[0047] 2. The connection of the backup battery pack and the discharge of the original battery pack of the present invention are both monitored in real time for voltage and current, which can avoid power outages caused by sudden situations such as AC power outages or module failures, and ensure the operation of important equipment in the substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic diagram of the structure of a DC power supply battery activation protection device in the prior art.

[0049] Figure 2 A simplified structural diagram of the DC power supply battery activation protection device of the present invention.

[0050] Figure 3 A schematic structural diagram of a DC power supply battery activation protection device of the present invention. DETAILED DESCRIPTION

[0051] Preferred Embodiments

[0052] A DC power supply battery activation protection device comprises an AC mutual investment module 1, and a lightning arrester module 2 is electrically connected to the AC mutual investment module 1;

[0053] A first circuit breaker module 100 is also electrically connected to the AC mutual switching module 1;

[0054] A high frequency power supply module 600 is electrically connected to the first circuit breaker module 100;

[0055] A second circuit breaker module 200 is electrically connected to the high frequency power module 600;

[0056] The second circuit breaker module 200 is electrically connected to the third circuit breaker module 300 and the control bus module 3;

[0057] The third circuit breaker module 300 is electrically connected to the fifth circuit breaker module 500 and the fuse module 700;

[0058] The fuse module 700 is electrically connected to the fourth circuit breaker module 400 and the first current and voltage detection module 800;

[0059] A discharger module 4 is electrically connected to the fourth circuit breaker module 400;

[0060] A first battery module 5 is electrically connected to the first current and voltage detection module 800;

[0061] The fifth circuit breaker module 500 is electrically connected to the second current and voltage detection module 900;

[0062] The other end of the second current and voltage detection module 900 is electrically connected to the second battery module 6 .

[0063] The AC mutual investment module includes an AC mutual investment device HT;

[0064] The eleventh circuit breaker QF11, the twelfth circuit breaker QF12, the thirteenth circuit breaker QF13, the fourteenth circuit breaker QF14, and the fifteenth circuit breaker QF15;

[0065] The high frequency power supply module 600 includes: an eleventh rectifier U11, a twelfth rectifier U12, a thirteenth rectifier U13, a fourteenth rectifier U14, and a fifteenth rectifier U15;

[0066] The eleventh circuit breaker QF11, the twelfth circuit breaker QF12, the thirteenth circuit breaker QF13, the fourteenth circuit breaker QF14, and the fifteenth circuit breaker QF15 are electrically connected to one end of the eleventh rectifier U11, the twelfth rectifier U12, the thirteenth rectifier U13, the fourteenth rectifier U14, and the fifteenth rectifier U15 respectively;

[0067] The second circuit breaker module 200 includes: a second circuit breaker QF2;

[0068] The other ends of the eleventh rectifier U11, the twelfth rectifier U12, the thirteenth rectifier U13, the fourteenth rectifier U14, and the fifteenth rectifier U15 are electrically connected to one end of the second circuit breaker QF2 respectively;

[0069] The control bus module 3 includes: a control bus KM;

[0070] The third circuit breaker module 300 includes: a third circuit breaker QF3;

[0071] The other end of the second circuit breaker QF2 is electrically connected to the control bus KM and one end of the third circuit breaker QF3 respectively;

[0072] The fuse module 700 includes: a fuse FU0;

[0073] The fifth circuit breaker module 500 includes: a fifth circuit breaker QF5;

[0074] The other end of the third circuit breaker QF3 is electrically connected to one end of the fuse FU0 and one end of the fifth circuit breaker QF5 respectively;

[0075] The fourth circuit breaker module 400 includes: a fourth circuit breaker QF4;

[0076] The first current and voltage detection module 800 includes: a first ammeter voltage PA1, a first resistor RA1, and a first voltmeter PV1;

[0077] The other end of the fuse FU0 is electrically connected to the fourth circuit breaker QF4, one end of the first ammeter PA1, one end of the first resistor RA1, and one end of the first voltmeter PV1 respectively;

[0078] The first resistor RA1 is electrically connected to the other end of the first ammeter PA1 and the other end of the first voltmeter PV1 respectively;

[0079] The second current and voltage detection module 900 includes: a second ammeter voltage PA2, a second resistor RA2, and a second voltmeter PV2;

[0080] The other end of the fifth circuit breaker QF5 is electrically connected to one end of the second ammeter voltage PA2, one end of the second resistor RA2, and one end of the second voltmeter PV2;

[0081] The second resistor RA2 is electrically connected to the other ends of the second ammeter PA2 and the second voltmeter PV2;

[0082] The first battery module 5 includes: a first battery pack BAT1, and the second battery module 6 includes: a backup battery pack BAT2;

[0083] The first voltmeter PV1 is electrically connected to the first battery BAT1 ; the second voltmeter PV2 is electrically connected to the backup battery group BAT2 .

[0084] The models of the eleventh circuit breaker QF11, the twelfth circuit breaker QF12, the thirteenth circuit breaker QF13, the fourteenth circuit breaker QF14 and the fifteenth circuit breaker QF15 are all GM653328-16A.

[0085] The models of the eleventh rectifier U11, the twelfth rectifier U12, the thirteenth rectifier U13, the fourteenth rectifier U14 and the fifteenth rectifier U15 are all HD22010-3.

[0086] The model of the second circuit breaker QF2 is: GM32M2328R63A.

[0087] The model of the third circuit breaker QF3 is GM5-250G / 2 / G-250A+AX.

[0088] The model of the fourth circuit breaker QF4 is GM32M2300R63A.

[0089] The model of the fifth circuit breaker QF5 is GM5-125M / 2TM 125A.

[0090] The models of the first ammeter PA1 and the second ammeter PA1 are both LNF0-100A; the models of the first voltmeter PV1 and the second voltmeter PV2 are both LNF0-450A.

[0091] The model of the fuse FU0 is RT16-250A; the model of the first battery pack BAT1 is DJ200-2V / 200Ah, and the model of the backup battery pack BAT2 is DJM-40 / 12V.

[0092] The DC power supply battery activation protection device also includes a feed-out module, which includes: a first display light 2H1-a fifteenth display light 2H15, a twenty-first circuit breaker 2QF1-a thirty-fifth circuit breaker 2QF15; a first display light 2H1-a fifteenth display light 2H15 is connected in parallel between the positive pole +KM of the control bus and the negative pole -KM of the control bus of the AC mutual investment module, and each of the first display light 2H1-a fifteenth display light 2H15 is respectively connected in series with the twenty-first circuit breaker 2QF1-a thirty-fifth circuit breaker 2QF15.

[0093] The discharger module 4 includes: a discharger FD; connecting the backup battery group BAT2 to one end of the fifth circuit breaker QF5, and then connecting the discharger FD to one end of the fourth circuit breaker QF4. After completing the wiring of the two sets of equipment, disconnect the third circuit breaker QF3, remove the fuse FU0, and observe that the voltage of the backup battery BAT2 is normal through the second voltmeter PV2, and then respectively put into the third circuit breaker QF3 and the fifth circuit breaker QF5. At this time, the backup battery group BAT2 is connected to the device, and the charging current is observed to be normal, without false connection or open circuit; the fourth circuit breaker QF4 switch is put into activation discharge of the first battery group BAT1, and the discharge voltage and discharge current are observed to be normal through the first voltmeter PV1 and the first ammeter PA1, and the constant current discharge of the first battery group BAT1 is completed, and deep activation is performed. The entire activation process, through the protection of each circuit breaker module, the monitoring of each current and voltage detection module, and the connection of the backup battery group BAT2, can avoid power failure caused by sudden situations caused by AC power failure or module failure, and ensure the operation of important equipment in the substation.

[0094] The DC power supply battery activation protection device reduces the risk of DC power failure during the battery activation process for substation maintenance personnel, thereby ensuring the stability and reliability of the operation of DC equipment during the battery activation process.

Claims

1. DC power supply battery activation protection device, characterized in that: It comprises an AC mutual switching module (1), and a lightning arrester module (2) electrically connected to the AC mutual switching module (1); A first circuit breaker module (100) is also electrically connected to the AC mutual switching module (1); A high-frequency power supply module (600) is electrically connected to the first circuit breaker module (100); A second circuit breaker module (200) is electrically connected to the high-frequency power supply module (600); The second circuit breaker module (200) is electrically connected to the third circuit breaker module (300) and the control bus module (3); The third circuit breaker module (300) is electrically connected to the fifth circuit breaker module (500) and the fuse module (700); The fuse module (700) is electrically connected to the fourth circuit breaker module (400) and the first current and voltage detection module (800); A discharger module (4) is electrically connected to the fourth circuit breaker module (400); A first battery module (5) is electrically connected to the first current and voltage detection module (800); The fifth circuit breaker module (500) is electrically connected to a second current and voltage detection module (900); The other end of the second current and voltage detection module (900) is electrically connected to a second battery module (6).

2. The DC power supply battery activation protection device according to claim 1, characterized in that: The first circuit breaker module (100) comprises: an eleventh circuit breaker QF11, a twelfth circuit breaker QF12, a thirteenth circuit breaker QF13, a fourteenth circuit breaker QF14, and a fifteenth circuit breaker QF15; The high-frequency power supply module (600) comprises: an eleventh rectifier U11, a twelfth rectifier U12, a thirteenth rectifier U13, a fourteenth rectifier U14, and a fifteenth rectifier U15; The eleventh circuit breaker QF11, the twelfth circuit breaker QF12, the thirteenth circuit breaker QF13, the fourteenth circuit breaker QF14, and the fifteenth circuit breaker QF15 are electrically connected to one end of the eleventh rectifier U11, the twelfth rectifier U12, the thirteenth rectifier U13, the fourteenth rectifier U14, and the fifteenth rectifier U15 respectively; The second circuit breaker module (200) comprises: a second circuit breaker QF2; The other ends of the eleventh rectifier U11, the twelfth rectifier U12, the thirteenth rectifier U13, the fourteenth rectifier U14, and the fifteenth rectifier U15 are electrically connected to one end of the second circuit breaker QF2 respectively; The control bus module (3) comprises: a control bus KM; The third circuit breaker module (300) comprises: a third circuit breaker QF3; The other end of the second circuit breaker QF2 is electrically connected to the control bus KM and one end of the third circuit breaker QF3 respectively; The fuse module (700) comprises: a fuse FU0; The fifth circuit breaker module (500) comprises: a fifth circuit breaker QF5; The other end of the third circuit breaker QF3 is electrically connected to one end of the fuse FU0 and one end of the fifth circuit breaker QF5 respectively; The fourth circuit breaker module (400) comprises: a fourth circuit breaker QF4; The first current and voltage detection module (800) comprises: a first ammeter voltage PA1, a first resistor RA1, and a first voltmeter PV1; The other end of the fuse FU0 is electrically connected to the fourth circuit breaker QF4, one end of the first ammeter PA1, one end of the first resistor RA1, and one end of the first voltmeter PV1 respectively; The first resistor RA1 is electrically connected to the other end of the first ammeter PA1 and the other end of the first voltmeter PV1 respectively; The second current and voltage detection module (900) comprises: a second ammeter voltage PA2, a second resistor RA2, and a second voltmeter PV2; The other end of the fifth circuit breaker QF5 is electrically connected to one end of the second ammeter voltage PA2, one end of the second resistor RA2, and one end of the second voltmeter PV2; The second resistor RA2 is electrically connected to the other ends of the second ammeter PA2 and the second voltmeter PV2; The first battery pack module (5) comprises: a first battery pack BAT1, and the second battery pack module (6) comprises: a backup battery pack BAT2; The first voltmeter PV1 is electrically connected to the first battery BAT1 ; the second voltmeter PV2 is electrically connected to the backup battery group BAT2 .

3. The DC power supply battery activation protection device according to claim 2, characterized in that: The models of the eleventh circuit breaker QF11, the twelfth circuit breaker QF12, the thirteenth circuit breaker QF13, the fourteenth circuit breaker QF14 and the fifteenth circuit breaker QF15 are all GM653328-16A.

4. The DC power supply battery activation protection device according to claim 2 or 3, characterized in that: The models of the eleventh rectifier U11, the twelfth rectifier U12, the thirteenth rectifier U13, the fourteenth rectifier U14 and the fifteenth rectifier U15 are all HD22010-3.

5. The DC power supply battery activation protection device according to claim 4, characterized in that: The model of the second circuit breaker QF2 is: GM32M2328R63A.

6. The DC power supply battery activation protection device according to claim 2 or 5, characterized in that: The model of the third circuit breaker QF3 is GM5-250G / 2 / G-250A+AX.

7. The DC power supply battery activation protection device according to claim 6, characterized in that: The model of the fourth circuit breaker QF4 is GM32M2300R63A.

8. The DC power supply battery activation protection device according to claim 7, characterized in that: The model of the fifth circuit breaker QF5 is GM5-125M / 2TM 125A.

9. The DC power supply battery activation protection device according to claim 7 or 8, characterized in that: The models of the first ammeter PA1 and the second ammeter PA2 are both LNF0-100A; the models of the first voltmeter PV1 and the second voltmeter PV2 are both LNF0-450A.

10. The DC power supply battery activation protection device according to claim 9, characterized in that: The model of the fuse FU0 is RT16-250A; the model of the first battery pack BAT1 is DJ200-2V / 200Ah, and the model of the backup battery pack BAT2 is DJM-40 / 12V.

Images