CN2166554Y - Direct-current power-supply cabinet - Google Patents
Direct-current power-supply cabinet Download PDFInfo
- Publication number
- CN2166554Y CN2166554Y CN 93223344 CN93223344U CN2166554Y CN 2166554 Y CN2166554 Y CN 2166554Y CN 93223344 CN93223344 CN 93223344 CN 93223344 U CN93223344 U CN 93223344U CN 2166554 Y CN2166554 Y CN 2166554Y
- Authority
- CN
- China
- Prior art keywords
- direct current
- air switch
- current air
- cabinet
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a direct-current power-supply cabinet with novel connection structure. The utility model is suitable for transformer substations below 220 kV, and medium and small power generating plants, and is used for the driving power supply for the direct-current power utilization load, protection and measurement signal systems and high-voltage switch devices. The charging floating charge component, the power feed component and the battery of the utility model are respectively arranged in the charging cabinet, the power feed cabinet and the electric cell cabinet. Under the normal operation state, the voltage-reducing element is not switched on. When in accident, the voltage-reducing element automatically switches on. The utility model has the advantages of energy saving and difficult damage of the components of the cabinet.
Description
The utility model relates to a kind of DC power cabinet of electric power system, is applicable to the following transformer station of 220kv, middle-size and small-size power plant, as the driving power of direct current power load, protection, measuring-signal system and high voltage switchgear.
DC power cabinet normally is made up of charging floating charge components and parts, feed components and parts and battery pack, in the present DC power cabinet, the mode of connection of charging floating charge components and parts, feed components and parts and battery pack, as shown in Figure 1, the DC power cabinet decompression device of this draw bail, the normal phase is in conducting, febrile state, i.e. power consumption, the interior temperature rise of cabinet is high again, easily causes components and parts to damage; Battery pack is installed with cabinet with charging floating charge components and parts, feed components and parts, and battery corrosion gas is to corrosion of elements in the cabinet.
The purpose of this utility model provides a kind of DC power cabinet of new structure, and it has energy-conservation, the interior non-damageable characteristics of element of cabinet.
The purpose of this utility model is achieved in that a kind of DC power cabinet, it is made up of charging floating charge components and parts, feed components and parts and battery pack, charging floating charge components and parts, feed components and parts and battery pack are contained in respectively in charging cabinet, feeder cabinet, the battery rack, charging floating charge components and parts comprise: the rectifier U of band tap, direct current air switch 1Q
1, 1Q
2The feed components and parts comprise: the direct current air switch 3Q that the output direct current is used
1～n, 4Q
1～n, direct current air switch 5Q, test with direct current air switch 2Q, fuse F, when normally moving during not conducting accident automatic conducting select voltage drop element GD, insulating monitoring element, the voltage of step-down shelves to supervise element automatically; Their electric connecting relation is as follows: the rectifier U ac input end of band tap connects extraneous three phase mains, dc output end output two-way voltage, and one the tunnel through direct current air switch 1Q
2, control bus L
1+, insulating monitoring element, voltage supervision element, meet the direct current air switch 3Q that the output direct current is used
1～nAnother road meets direct current air switch 1Q
1Two-way is divided in the back, and one the tunnel meets battery pack G through fuse F, and another road is respectively through direct current air switch 5Q, closing bus bar L
2+Meet the direct current air switch 4Q that the output direct current is used
1～nAnd meeting the direct current air switch 2Q that tests usefulness, voltage drop element A point meets control bus L
1+, the B point engages lock bus L
2+
The utility model has the advantages that, because the DC power cabinet that has adopted said structure to connect, the B point through voltage drop element GD with after the A point connects, under the normal operating conditions, not conducting between B, A, energy-conservation, element is not fragile, and battery pack G is contained in separately in the cabinet, and battery corrosion gas can not corrode element in the adjacent cabinet.
Fig. 1 is that former DC power supply cabinet connects single line schematic diagram;
Fig. 2 is that the utility model structure connects single line schematic diagram;
Fig. 3 is a present embodiment structure wiring schematic diagram;
Fig. 4 is a present embodiment appearance structure schematic diagram;
Fig. 5 is a present embodiment voltage drop element structure line schematic diagram;
Fig. 6 is a present embodiment voltage drop element change over switch break-make schematic diagram;
The utility model is described in further detail below in conjunction with accompanying drawing:
Embodiment 1:
A kind of DC power cabinet, it is made up of charging floating charge components and parts, feed components and parts and battery pack, and charging floating charge components and parts, feed components and parts and battery pack are contained in respectively in charging cabinet 3, feeder cabinet 4, the battery rack 5;
Charging floating charge components and parts comprise: the rectifier U of band tap, direct current air switch 1Q
1, 1Q
2The feed components and parts comprise: the direct current air switch 3Q that band inserts bus and the output direct current of the warning of threading off is used
1～n, 4Q
1～n, direct current air switch 5Q, test be with the fuse F of direct current air switch 2Q, band remote alarms contact
1, F
2, normally-closed contact K, rectifier diode V
2, V
1, resistance R, adjustable resistance W, ammeter PA, voltmeter PV, when normally moving during not conducting accident automatic conducting select voltage drop element GD, insulating monitoring element 1, the voltage supervision element 2 of step-down shelves automatically;
Their electric connecting relation is as follows: the rectifier U ac input end of band tap connects extraneous three phase mains, and dc output end output two-way voltage is leaded up to direct current air switch 1Q
2, through direct current air switch 5Q, negative busbar L-and positive bus-bar L
1+, the direct current air switch 3Q that tape splicing inserts bus and threads off and report to the police
1～n, another road is by direct current air switch 1Q
1Meet battery pack G, battery pack G positive and negative electrode is connected to the fuse F of band remote alarms contact respectively
1And F
2, fuse F
1Through rectifier diode V
1After meet positive bus-bar L
2+, fuse F
2Meet negative busbar L-, rectifier diode V
2, after resistance R, adjustable resistance W, the ammeter PA series connection, with rectifier diode V
1Parallel connection, contact K is in parallel with resistance R and adjustable resistance W, battery pack G goes up and voltmeter PV is arranged, when normally moving during not conducting accident automatic conducting select the B point of step-down shelves voltage drop element GD to meet positive bus-bar L automatically
2+, the A point meets positive bus-bar L
1+, the C point meets negative busbar L-, closing bus bar L
2+The direct current air switch 4Q that tape splicing inserts bus and threads off and report to the police
1～n, negative busbar L-and positive bus-bar L
1+On be connected to insulating monitoring element 1 and voltage supervision element 2.
Shown in Fig. 5,6, wherein, voltage drop element GD is by n retaining diode GD
1～n, n control relay K
1～n, a sample resistance R
1With manual change-over switch S with (n+1) individual normally opened contact, and terminal board is formed, the voltage difference during more than or equal to 2 operate as normal of A, B), the amplitude of every grade of step-down decides n is that (overall presure drop refers to: according to overall presure drop, as: the voltage difference during 2 operate as normal of supposition present embodiment AB is 40V, every grade of pressure drop is 8V, then selects n=5 for use;
Their electrical wiring relation is as follows: 5 voltage stabilizing didoe GD
1～5Be connected in series positive high voltage end and positive bus-bar L successively
2+Be connected, terminals are B, positive low-voltage end and positive bus-bar L
1+Be connected, terminals are A, a normally-closed contact (K of control relay in the corresponding cross-over connection of two interpolars of every grade of voltage stabilizing didoe
1～5), 0 ° of position of setting change over switch S, 1.～2. pairing normally opened contact is connected in the automatic step-down sample circuit, 1. is connected with B, 2. connects binding post 1, sample resistance R
1An end be connected with the A point, the other end is connected to 4 ends of terminal board, 5 control relay coil K
1～5An end parallel connection after connect with the A point, the other end of each control relay coil is connected to 8,6 of terminal board respectively, 2,3,5,7 ends, 1,8 of terminal board, 6,2,3,5,7,4 terminate in the conventional comparison circuit, when the S selection was 1.～2. closed, circuit can be carried out the function of automatic adjusting step-down shelves.
Manual change over switch S is set with 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, and list in table corresponding normally opened contact position, and * expression is connected.
One end of each manual change-over switch S normally opened contact joins with the coil of corresponding control relay, and the other end is connected with negative busbar L-.
The rectifier of the band tap of present embodiment, band insert bus and the direct current air switch of reporting to the police of threading off, the fuse of band remote alarms contact are device that market supplies.
This DC power cabinet can have the identical charging of two covers, float charger.According to the requirement of main electrical scheme, output dc voltage uses for charge in batteries, floating charge and routine load individually or simultaneously.The utility model is selected a cover charging, float charger for use.
This DC power cabinet has three kinds of operating states:
1. main charging:
Open direct current air switch 1Q
2, 5Q, closed direct current air switch 1Q
1, contact K, rectifier U is with current constant mode, supplies with galvanic current stream to storage battery G, when storage battery was done the activation test, test can be as discharge switch with direct current air switch 2Q.
2. equalizing charge:
Adopt the constant voltage and current limiting mode to power closed direct current air switch 1Q
1, 1Q
2, 5Q and contact K, rectifier U output two-way voltage, the one tunnel through direct current air switch 1Q
1, contact K is to storage battery G charging, another road is through direct current air switch 1Q
2, 5Q is to control bus L
1+Power supply, B point through voltage drop element GD with after the A point connects, under the normal operating conditions, not conducting between B, A, the shared negative pole of two-way voltage.
3. floating charge:
Adopt the constant voltage mode to power closed direct current air switch 1Q
1, 1Q
2, 5Q, opened nodes K, the defeated U of rectifier goes out two-way voltage, the one tunnel through direct current air switch 1Q
1, diode V
2, resistance R, adjustable resistance W, PA be to storage battery G floating charge, another road is through direct current air switch 1Q
2, 5Q is to control bus L
1+Power supply, B point through voltage drop element with after the A point connects, under the normal operating conditions, not conducting between B, A, the shared negative pole of two-way voltage.
During accident, alternating current interrupts, and rectifier U does not have direct voltage output, this moment by storage battery through voltage drop element GD to control bus L
1+Power supply guarantees to control bus L
1+Power supply continuously.
Claims (3)
1, a kind of DC power cabinet, it is made up of charging floating charge components and parts, feed components and parts and battery pack, it is characterized in that: charging floating charge components and parts, feed components and parts and battery pack are contained in respectively in charging cabinet (3), feeder cabinet (4), the battery rack (5), charging floating charge components and parts comprise: the rectifier U of band tap, direct current air switch 1Q
1, 1Q
2The feed components and parts comprise: the direct current air switch 3Q that the output direct current is used
L～n, 4Q
1～n, direct current air switch 5Q, test with direct current air switch 2Q, fuse F, when normally moving during not conducting accident automatic conducting select voltage drop element GD, insulating monitoring element (1), the voltage of step-down shelves to supervise element (2) automatically; Their electric connecting relation is as follows; The rectifier U ac input end of band tap connects extraneous three phase mains, dc output end output two-way voltage, and one the tunnel through direct current air switch 1Q
2, control bus L
1+, insulating monitoring element (1), voltage supervision element (2), meet the direct current air switch 3Q that the output direct current is used
1～nAnother road meets direct current air switch 1Q
1Two-way is divided in the back, and one the tunnel meets battery pack G through fuse F, and another road is respectively through direct current air switch 5Q, closing bus bar L
2+Meet the direct current air switch 4Q that the output direct current is used
1～NAnd meeting the direct current air switch 2Q that tests usefulness, voltage drop element A point meets control bus L
1+, the B point engages lock bus L
2+
2, DC power cabinet as claimed in claim 1 is characterized in that: the direct current air switch 3Q that the output direct current is used
1～n, 4Q
1～nIt is the direct current air switch that band inserts bus and threads off and report to the police.
3, DC power cabinet as claimed in claim 1 or 2 is characterized in that: fuse F is the fuse of band remote alarms contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93223344 CN2166554Y (en) | 1993-09-06 | 1993-09-06 | Direct-current power-supply cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93223344 CN2166554Y (en) | 1993-09-06 | 1993-09-06 | Direct-current power-supply cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2166554Y true CN2166554Y (en) | 1994-05-25 |
Family
ID=33801688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93223344 Expired - Fee Related CN2166554Y (en) | 1993-09-06 | 1993-09-06 | Direct-current power-supply cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2166554Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074994A (en) * | 2010-12-10 | 2011-05-25 | 温州电力局 | Charging device of direct-current (DC) system |
| CN111884199A (en) * | 2020-08-03 | 2020-11-03 | 国网山东省电力公司寿光市供电公司 | Super capacitor direct current device |
-
1993
- 1993-09-06 CN CN 93223344 patent/CN2166554Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074994A (en) * | 2010-12-10 | 2011-05-25 | 温州电力局 | Charging device of direct-current (DC) system |
| CN102074994B (en) * | 2010-12-10 | 2013-03-13 | 温州电力局 | Charging device of direct-current (DC) system |
| CN111884199A (en) * | 2020-08-03 | 2020-11-03 | 国网山东省电力公司寿光市供电公司 | Super capacitor direct current device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |