CN202142903U - Transition power box with monitoring and warning functions - Google Patents
Transition power box with monitoring and warning functions Download PDFInfo
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- CN202142903U CN202142903U CN201120226026U CN201120226026U CN202142903U CN 202142903 U CN202142903 U CN 202142903U CN 201120226026 U CN201120226026 U CN 201120226026U CN 201120226026 U CN201120226026 U CN 201120226026U CN 202142903 U CN202142903 U CN 202142903U
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- 230000007704 transition Effects 0.000 title claims abstract description 28
- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 230000007306 turnover Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Abstract
The utility model discloses a transition power box with monitoring and warning functions. A charging device is parallely connected to positive and negative direct-current buses via a direct-current circuit breaker QK2. An accumulator is parallely connected with a fuse and a voltmeter which are serially connected, then is serially connected with a current diverter FL, and then is parallely connected with the positive and negative direct-current buses via a direct-current circuit breaker QK1. The current diverter is connected with an ammeter. The positive and negative direct-current buses are connected with one, two or more groups of load outgoing lines via direct-current circuit breakers QK3 and display lamps. Two ends of a voltage monitoring circuit with the warning function and two ends of an insulating monitoring circuit with the warning function are respectively parallely connected with the positive and negative direct-current buses via two fuses. When a direct-current screen is to be replaced, the transition power box is applied, and all one needs to do is to connect a direct-current load of the to-be-replaced direct-current screen to the load outgoing lines of the transition power box. The transition power box of the utility model is safe to use, makes wiring operation easy and is capable of in-time monitoring and automatic warning.
Description
Technical field
The utility model relates to the transition instrument of direct current cabinet replacing overhaul in a kind of transformer station.
Background technology
Violate the direct current cabinet that perhaps surpasses operation time limit component aging that anti-accident measures requires in the transformer station, replacing all need carry out large repairs.The direct current system that sectionalized single busbar connection moves when the direct current cabinet overhaul is changed, needs to be with the dc load on the direct current cabinet that needs replacing with standby battery group access transition screen and by the transition screen.The simple transition device that adopts at present is for being fixed on the general insurance insulation on the metallic plate, and the metallic plate insulation is fixed in the transition screen.The positive and negative dc bus of batteries and this transition screen section is drawn in insurance termination up and down.Mainly there is following problem in such structure: 1. common insurance operating characteristics is poor, and cooperates inconsistently with the subordinate on-load switch is differential, does not satisfy the anti-accident measures requirement.2. general insurance does not have arc extinction performance, when arranged side by side standby battery group, causes strong spark easily, and personnel are damaged.3. the different direct current cabinets structures of different substation have nothing in common with each other, and it is fixing to cause transition apparatus to be not suitable for all screen positions, sometimes even need the interim fixing metallic plate of transforming, directly influence job schedule.4. supervision needs the staff to adopt universal instrument to measure realization, can not accomplish real-time monitoring.5. the outlet of transition screen load is few, does not have unnecessary power supply to connect on transition is shielded and draws the position to the dc load on the direct current cabinet that needs to change, and can only a way switch crimping multichannel load on the transition screen, causes generation overheated, the virtual connection phenomenon easily.
The utility model content
The purpose of the utility model is exactly to solve the problems referred to above that exist in the prior art; A kind of transition power supply box with supervision and warning function is provided; Use this transition power supply box when changing direct current cabinet, need only the load outlet that the dc load of the direct current cabinet band of changing is directly received the transition power supply box, its wiring is simple; Safe in utilization, can accomplish monitoring in real time and report to the police automatically.
For realizing above-mentioned purpose; The technical solution of the utility model is: a kind of transition power supply box with supervision and warning function, and it comprises casing, fixed panel, storage battery, charger, positive and negative dc bus, one group, two groups or many group load outlet, insulating monitoring circuit and voltage watchdog circuit; Charger is connected in parallel on the positive and negative dc bus through dc circuit breaker QK2, after storage battery and insurance of connecting and the voltmeter parallel connection, is connected in parallel on the positive and negative dc bus through dc circuit breaker QK1 behind the shunt FL that connects again, and shunt connects ammeter; On the positive and negative dc bus also through being connected one group, two groups or the outlet of many group loads behind each dc circuit breaker QK3 and the display lamp respectively; The voltage watchdog circuit two ends of band warning function are connected in parallel on the positive and negative dc bus through two insurances respectively with the insulating monitoring circuit two ends of band warning function.
Above-mentioned described voltage watchdog circuit is made up of voltage supervision relay and alarm DL; The normally opened contact of the overvoltage coil of voltage supervision relay is with after the normally-closed contact of under-voltage coil is parallelly connected; After alarm DL connects; Again with parallelly connected under-voltage coil and overvoltage coils from parallel connection of coils after, two ends respectively through two insurance RD4, RD5 be connected in parallel on positive and negative dc bus+HM ,-HM is last.
Above-mentioned described insulating monitoring circuit comprises insulating monitoring relay and alarm DL2, and the insulating monitoring relay is made up of the normally opened contact K2-1 of the normally opened contact K1-1 of coil K1, coil K1, coil K2, coil; After the resistance R 1 of balance bridge and R2 series connection back and normally opened contact K1-1 that connects and the coil K2 parallel connection, again with normally opened contact K2-1 that connects and alarm DL-1 parallel connection after, two ends respectively through two insure RD2, RD3 be connected in parallel on positive and negative dc bus+HM ,-HM is last; Pass through coil K1 ground connection between resistance R 1 and the R2.
Above-mentioned said casing, fixed panel all can be opened, have on the casing connect the turnover cable that draws into and out of the line through wires hole.Make things convenient for fastening, the replacing of components and parts, avoid the extruding of case lid cable.
Because the utility model has adopted such scheme; Storage battery, charger, positive and negative dc bus, load outlet, insulating monitoring circuit and voltage watchdog circuit are arranged in the transition power supply box, and it has simulated the structure of a simple direct current cabinet, so; Need only the load outlet that the dc load of the direct current cabinet band of changing is directly received the transition power supply box; Need not re-use the direct current cabinet of working and make the transition screen, its wiring is simple, and is safe in utilization.Its input, lead-out terminal all can bear the 20A electric current and flow through, but dc circuit breaker QK3 bearing load 25A electric current flow through, current carrying capacity is strong, its volume is little, easy to carry.Voltage supervision relay, on-line monitoring positive and negative DC bus-bar voltage in service, in case positive and negative DC bus-bar voltage exceeds range of operation, voltage supervision relay will move, buzzer is reported to the police, and reminds the staff in time to adjust busbar voltage; The insulating monitoring relay is kept watch on direct current system insulation situation, in case insulation reduction situation takes place direct current system, buzzer is reported to the police, and the prompting staff quits work immediately and searches earth fault; Can accomplish monitoring in real time and report to the police automatically, safe to use.D.C. voltmeter, ammeter are kept watch on positive and negative DC bus-bar voltage, charger output current and dc load situation of change.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model;
Fig. 2 is the structural representation of voltage watchdog circuit in the circuit of the utility model;
Fig. 3 is the structural representation of insulating monitoring circuit in the circuit of the utility model.
Embodiment
As shown in Figure 1, present embodiment comprise casing, fixed panel, storage battery E, charger, positive and negative dc bus+HM ,-HM, five groups of loads outlet 1,2,3,4,5, insulating monitoring circuit and voltage watchdog circuit.Charger through dc circuit breaker QK2 be connected in parallel on positive and negative dc bus+HM ,-HM is last; After storage battery E and insurance RD1 that connects and the voltmeter PV parallel connection; Connect again behind the shunt FL through dc circuit breaker QK1 be connected in parallel on positive and negative dc bus+HM ,-HM is last, shunt connects ammeter PA.Positive and negative dc bus+HM ,-HM is last also through connected load outlet 1 respectively behind each dc circuit breaker QK3 and the display lamp L, load outlet 2, load outlet 3, load outlet 4 and load outlet 5.The voltage watchdog circuit is made up of voltage supervision relay and alarm DL; The normally opened contact KVU-1 of the overvoltage coil KVU of voltage supervision relay is with after the normally-closed contact KVO-1 of under-voltage coil KVO is parallelly connected; After alarm DL connects; Again with parallelly connected under-voltage coil KVO and overvoltage coil KVU parallel connection after, two ends respectively through two insurance RD4, RD5 be connected in parallel on positive and negative dc bus+HM ,-HM is last.The insulating monitoring circuit comprises insulating monitoring relay and alarm DL2, and the insulating monitoring relay is made up of the normally opened contact K2-1 of the normally opened contact K1-1 of coil K1, coil K1, coil K2, coil; After the resistance R 1 of balance bridge and R2 series connection back and normally opened contact K1-1 that connects and the coil K2 parallel connection, again with normally opened contact K2-1 that connects and alarm DL-1 parallel connection after, two ends respectively through two insure RD2, RD3 be connected in parallel on positive and negative dc bus+HM ,-HM is last; Pass through coil K1 ground connection between resistance R 1 and the R2.Casing, fixed panel all can be opened, have on the casing connect the turnover cable that draws into and out of the line through wires hole.
Claims (5)
1. one kind has and keeps watch on and the transition power supply box of warning function, and it is characterized in that: it comprises casing, fixed panel, storage battery, charger, positive and negative dc bus, one group, two groups or many group load outlet, insulating monitoring circuit and voltage watchdog circuit; Charger is connected in parallel on the positive and negative dc bus through dc circuit breaker QK2, after storage battery and insurance of connecting and the voltmeter parallel connection, is connected in parallel on the positive and negative dc bus through dc circuit breaker QK1 behind the shunt FL that connects again, and shunt connects ammeter; On the positive and negative dc bus also through being connected one group, two groups or the outlet of many group loads behind each dc circuit breaker QK3 and the display lamp respectively; The voltage watchdog circuit two ends of band warning function are connected in parallel on the positive and negative dc bus through two insurances respectively with the insulating monitoring circuit two ends of band warning function.
2. the transition power supply box with supervision and warning function according to claim 1; It is characterized in that: described voltage watchdog circuit is made up of voltage supervision relay and alarm DL; The normally opened contact of the overvoltage coil of voltage supervision relay is with after the normally-closed contact of under-voltage coil is parallelly connected; After alarm DL connects, again with parallelly connected under-voltage coil and overvoltage coils from parallel connection of coils after, two ends respectively through two insurance RD4, RD5 be connected in parallel on positive and negative dc bus+HM ,-HM is last.
3. according to claim 1 or 2 described transition power supply boxs with supervision and warning function; It is characterized in that: described insulating monitoring circuit comprises insulating monitoring relay and alarm DL2, and the insulating monitoring relay is made up of the normally opened contact K2-1 of the normally opened contact K1-1 of coil K1, coil K1, coil K2, coil; After the resistance R 1 of balance bridge and R2 series connection back and normally opened contact K1-1 that connects and the coil K2 parallel connection, again with normally opened contact K2-1 that connects and alarm DL-1 parallel connection after, two ends respectively through two insure RD2, RD3 be connected in parallel on positive and negative dc bus+HM ,-HM is last; Pass through coil K1 ground connection between resistance R 1 and the R2.
4. according to claim 3 have keep watch on and the transition power supply box of warning function, it is characterized in that: described casing, fixed panel all can be opened, have on the casing connect the turnover cable that draws into and out of the line through wires hole.
According to claim 1 or 2 described have keep watch on and the transition power supply boxs of warning function, it is characterized in that: described casing, fixed panel all can be opened, have on the casing connect the turnover cable that draws into and out of the line through wires hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120226026U CN202142903U (en) | 2011-06-30 | 2011-06-30 | Transition power box with monitoring and warning functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120226026U CN202142903U (en) | 2011-06-30 | 2011-06-30 | Transition power box with monitoring and warning functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202142903U true CN202142903U (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120226026U Expired - Fee Related CN202142903U (en) | 2011-06-30 | 2011-06-30 | Transition power box with monitoring and warning functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202142903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938541A (en) * | 2012-11-30 | 2013-02-20 | 国家电网公司 | Direct current (DC) charged transition box |
-
2011
- 2011-06-30 CN CN201120226026U patent/CN202142903U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938541A (en) * | 2012-11-30 | 2013-02-20 | 国家电网公司 | Direct current (DC) charged transition box |
| CN102938541B (en) * | 2012-11-30 | 2016-04-27 | 国网冀北电力有限公司廊坊供电公司 | The charged transition case of direct current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20180630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |