CN104218663A - Uninterrupted power supply (UPS) direct current power supply port device for connecting direct current power supply with transformer substation direct current bus - Google Patents
Uninterrupted power supply (UPS) direct current power supply port device for connecting direct current power supply with transformer substation direct current bus Download PDFInfo
- Publication number
- CN104218663A CN104218663A CN201410476847.7A CN201410476847A CN104218663A CN 104218663 A CN104218663 A CN 104218663A CN 201410476847 A CN201410476847 A CN 201410476847A CN 104218663 A CN104218663 A CN 104218663A
- Authority
- CN
- China
- Prior art keywords
- direct current
- power supply
- ups
- bus
- switch
- 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.)
- Pending
Links
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
Disclosed is an uninterrupted power supply (UPS) direct current power supply port device for connecting a direct current power supply with a transformer substation direct current bus. The UPS direct current power supply port device comprises a fifth switch Q5, a second inverting unit A3, a second rectification unit A4 and a second direct current isolation transformer B2, a direct current input end of the second inverting unit A3 is connected with a transformer substation direct current bus ZM through a second switch Q2, an alternating current output end of the second inverting unit A3 is connected with an alternating current input end of the second rectification unit A4 through the second direct current isolation transformer B2, a direct current output end of the second rectification unit A4 is connected with an anode of a diode D through the fifth switch Q5, and the anode of the diode D is connected with a direct current input end ZI of a UPS device. According to the UPS direct current power supply port device for connecting the direct current power supply with the transformer substation direct current bus, the transformer substation direct current bus is isolated from an inner circuit of the UPS device, and the circuit relation is absent between the transformer substation direct current bus and the UPS device. By means of the UPS direct current power supply port device for connecting the direct current power supply with the transformer substation direct current bus, inner faults of the UPS device can not affect a direct current bus system, and decreasing of inner insulation of the UPS device can not lead to decreasing of insulation of the direct current bus.
Description
Technical field
The invention belongs to transformer station's uninterrupted power supply technical field, particularly relate to a kind of DC power supply and be connected to UPS DC power supply interface arrangement on transforming plant DC bus.
Background technology
UPS device is uninterruptible power system.It provides reliable source of power for some instrument and meter high to power quality requirements, when grid collapses, can provide and continuously power.Transformer station self has direct-flow storage battery group to be that DC load is powered, and therefore for reducing investment outlay, in transformer station, UPS device itself does not configure batteries, and DC power supply is drawn from transforming plant DC bus, and its structure is as Fig. 1;
As shown in Figure 1, described UPS device comprises: the first switch Q1, second switch Q2, the 3rd switch Q3, the 4th switch Q4, transformer B, rectification unit A1, inversion unit A2, static switch DK and DC-isolation diode D; Wherein: the first switch Q1, second switch Q2, the 3rd switch Q3 and the 4th switch Q4, static switch DK are commutator; Transformer B is for exchanging isolating transformer, and rectification unit A1 is ac-dc converter device, and inversion unit A2 is AC/DC inverter, and static switch DK is the noncontacting switch be made up of power electronic device, and DC-isolation diode D is power diode.
The first described alternating current input power supplying is connected with the input of rectification unit A1 with transformer B through the first switch Q1 successively, the output of rectification unit A1 is direct-flow input end ZI, be connected with the input of inversion unit A2, the output of inversion unit A2 is connected with an input of the 3rd switch Q3, and another input of the 3rd switch Q3 is connected with the second alternating current input power supplying; The output of the 3rd switch Q3 is connected with the input of the 4th switch Q4; One end of static switch DK is connected with the second alternating current input power supplying, and the other end is connected with the input of the 4th switch Q4; The output of the 4th switch Q4 is the power output end of this UPS device, is connected with load; The input of second switch Q2 is connected with transforming plant DC bus ZM, and output is connected with the anode of DC-isolation diode D, and the negative electrode of DC-isolation diode D is connected with direct-flow input end ZI; The two ends of transforming plant DC bus ZM are connected with DC load with batteries respectively.
Because the UPS device in transformer station itself does not arrange batteries, its direct-flow input end ZI is connected on transforming plant DC bus ZM through DC-isolation diode D and second switch Q2.Under this connected mode, when there is the fault such as DC earthing or insulation reduction in UPS device inside, capital causes the DC system grounding on transforming plant DC bus ZM or insulation to reduce, when the rectification unit A1 of this UPS device or inversion unit A2 breaks down, namely during input and output two terminal shortcircuit, alternating current 220V voltage directly will seal on transforming plant DC bus ZM by DC-isolation diode D and second switch Q2, because the DC load on transforming plant DC bus ZM mostly is protection, control, measure and control device, seal in after interchange to device and primary equipment very harmful, very likely cause protection incorrect operation, a switch point conjunction by mistake by mistake, abnormal signal send, transformer station's reliable power supply is run and works the mischief.In addition, if the transformer station put into operation re-starts UPS plant modification, will relate to more loop and device, therefore complicated construction technique, wastes time and energy.
Summary of the invention
In order to solve the problem, a kind of DC power supply is the object of the present invention is to provide to be connected to UPS DC power supply interface arrangement on transforming plant DC bus.
In order to achieve the above object, DC power supply provided by the invention is connected to UPS DC power supply interface arrangement on transforming plant DC bus and comprises: the 5th switch Q5, the second inversion unit A3, the second rectification unit A4 and the second DC-isolation transformer B2; Wherein: the direct-flow input end of the second inversion unit A3 is connected with transforming plant DC bus ZM by second switch Q2, the ac output end of the second inversion unit A3 is connected with the ac input end of the second rectification unit A4 by the second DC-isolation transformer B2, the DC output end of the second rectification unit A4 is connected with the anode of diode D by the 5th switch Q5, and the anode of diode D is connected with the direct-flow input end ZI of UPS device.
The second described inverter A3 is AC/DC inverter.
The second described rectification unit A4 is ac-dc converter device.
The second described transformer B2 is for exchanging isolating transformer.
The 5th described switch Q5 is manual electric switch.
DC power supply provided by the invention is connected to UPS DC power supply interface arrangement on transforming plant DC bus and forms a DC-DC code converter by an inversion unit, isolating transformer, a rectification unit; The transformer station's UPS DC power supply that is applicable to put into operation is connected to person on DC bus, before UPS accesses transforming plant DC bus, series connection adds this device, be equivalent to first by draw from the direct current inversion of DC bus be alternating current, after isolating transformer electromagnetic isolation, alternating current is rectified into direct current again, UPS device and transforming plant DC bus are contacted, the impact on direct current system when thoroughly solving UPS plant failure and irregular operating without any loop.And the wiring of this device is simple, affect less on load and secondary circuit.
The effect of this interface arrangement:
This interface arrangement thoroughly by the DC bus of transformer station and the isolation of UPS device internal circuit, does not have the contact on circuit both making.After using this device, the internal fault of UPS device can not impact DC bus system.UPS device built-in electrical insulation reduces also can not cause DC bus insulation reduction, improves the stability that transforming plant DC electrical secondary system is run, eliminates potential faults.
Accompanying drawing explanation
Fig. 1 is a kind of UPS apparatus structure schematic diagram of prior art.
Fig. 2 is that DC power supply provided by the invention is connected to UPS DC power supply interface arrangement structural representation on transforming plant DC bus.
Embodiment
Be connected to UPS DC power supply interface arrangement on transforming plant DC bus below in conjunction with the drawings and specific embodiments to DC power supply provided by the invention to be described in detail.
DC power supply provided by the invention is connected to UPS DC power supply interface arrangement on transforming plant DC bus, is applicable to the transformer station UPS device that puts into operation as shown in Figure 1, and its series connection accesses between second switch Q2 and DC-isolation diode D;
As shown in Figure 2, this interface arrangement comprises: the 5th switch Q5, the second inversion unit A3, the second rectification unit A4 and the second DC-isolation transformer B2; Wherein: the direct-flow input end of the second inversion unit A3 is connected with transforming plant DC bus ZM by second switch Q2, the ac output end of the second inversion unit A3 is connected with the ac input end of the second rectification unit A4 by the second DC-isolation transformer B2, the DC output end of the second rectification unit A4 is connected with the anode of diode D by the 5th switch Q5, and the anode of diode D is connected with the direct-flow input end ZI of UPS device.
The second described inverter A3 is AC/DC inverter, for being exported by the converting direct-current power into alternating-current power of input.
The second described rectification unit A4 is ac-dc converter device, exports for the alternating current of input being converted to direct current.
The second described transformer B2 is interchange isolating transformer, for realizing isolation and the voltage transitions of AC power.
The 5th described switch Q5 is manual electric switch.
DC power supply provided by the invention is connected to UPS DC power supply interface arrangement on transforming plant DC bus, be equivalent to before UPS device access DC bus ZM, add an inversion-isolation change-rectification unit, UPS device and transforming plant DC bus are contacted, the impact on direct current system when thoroughly solving UPS plant failure and irregular operating without any loop.And wiring is simple, affect less on load and secondary circuit.Be applicable to put into operation the transformation of transformer station UPS device, can greatly improve DC bus-bar voltage quality, insulation level and power supply reliability.
Claims (5)
1. DC power supply is connected to a UPS DC power supply interface arrangement on transforming plant DC bus, it is characterized in that: this interface arrangement comprises: the 5th switch Q5, the second inversion unit A3, the second rectification unit A4 and the second DC-isolation transformer B2; Wherein: the direct-flow input end of the second inversion unit A3 is connected with transforming plant DC bus ZM by second switch Q2, the ac output end of the second inversion unit A3 is connected with the ac input end of the second rectification unit A4 by the second DC-isolation transformer B2, the DC output end of the second rectification unit A4 is connected with the anode of diode D by the 5th switch Q5, and the anode of diode D is connected with the direct-flow input end ZI of UPS device.
2. DC power supply according to claim 1 is connected to UPS DC power supply interface arrangement on transforming plant DC bus, it is characterized in that: the second described inverter A3 is AC/DC inverter.
3. DC power supply according to claim 1 is connected to UPS DC power supply interface arrangement on transforming plant DC bus, it is characterized in that: the second described rectification unit A4 is ac-dc converter device.
4. DC power supply according to claim 1 is connected to UPS DC power supply interface arrangement on transforming plant DC bus, it is characterized in that: the second described transformer B2 is for exchanging isolating transformer.
5. DC power supply according to claim 1 is connected to UPS DC power supply interface arrangement on transforming plant DC bus, it is characterized in that: the 5th described switch Q5 is manual electric switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476847.7A CN104218663A (en) | 2014-09-18 | 2014-09-18 | Uninterrupted power supply (UPS) direct current power supply port device for connecting direct current power supply with transformer substation direct current bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410476847.7A CN104218663A (en) | 2014-09-18 | 2014-09-18 | Uninterrupted power supply (UPS) direct current power supply port device for connecting direct current power supply with transformer substation direct current bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104218663A true CN104218663A (en) | 2014-12-17 |
Family
ID=52099896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410476847.7A Pending CN104218663A (en) | 2014-09-18 | 2014-09-18 | Uninterrupted power supply (UPS) direct current power supply port device for connecting direct current power supply with transformer substation direct current bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104218663A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006129634A (en) * | 2004-10-29 | 2006-05-18 | Toshiba Mitsubishi-Electric Industrial System Corp | Uninterruptible power supply unit |
| CN202135054U (en) * | 2011-06-30 | 2012-02-01 | 珠海中瑞电力科技有限公司 | DC multi power supply conversion apparatus |
| CN203326700U (en) * | 2013-06-03 | 2013-12-04 | 滁州继保电气科技有限公司 | Uninterruptible power supply (UPS) power supply system |
-
2014
- 2014-09-18 CN CN201410476847.7A patent/CN104218663A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006129634A (en) * | 2004-10-29 | 2006-05-18 | Toshiba Mitsubishi-Electric Industrial System Corp | Uninterruptible power supply unit |
| CN202135054U (en) * | 2011-06-30 | 2012-02-01 | 珠海中瑞电力科技有限公司 | DC multi power supply conversion apparatus |
| CN203326700U (en) * | 2013-06-03 | 2013-12-04 | 滁州继保电气科技有限公司 | Uninterruptible power supply (UPS) power supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Emhemed et al. | The effectiveness of using IEC61660 for characterising short-circuit currents of future low voltage DC distribution networks | |
| CN207442450U (en) | A kind of voltage stabilizing device based on ultracapacitor energy storage | |
| CN109687463B (en) | AC/DC hybrid micro-grid structure integrated with distribution transformer rectifier | |
| CN202693701U (en) | Power unit body detection platform | |
| CN203813534U (en) | High-voltage capacitance electricity-taking device | |
| CN203674797U (en) | Station power microgrid main wiring system | |
| CN102882393B (en) | Power supply device for converter valve of static VAR generator | |
| CN103248134A (en) | Electric energy extracting device for cable partial discharge on-line detection | |
| CN203101606U (en) | Power supply and electronic product aging device | |
| CN206077059U (en) | A kind of terminal lightning protection HVDC no-break power unit | |
| CN202772663U (en) | AC-DC uninterrupted power supply system for communication device | |
| CN207732508U (en) | A kind of ups system | |
| CN205921525U (en) | A electrical power generating system for die casting machine or injection molding machine | |
| CN104218663A (en) | Uninterrupted power supply (UPS) direct current power supply port device for connecting direct current power supply with transformer substation direct current bus | |
| CN103576034A (en) | Detection device of charger power module | |
| CN201041956Y (en) | Power supply circuit for control circuit in high voltage device | |
| CN210181142U (en) | Inverter test system | |
| CN103746443A (en) | Alternating-current and direct-current power taking method for secondary circuit power supply of converter | |
| CN104218657A (en) | Improved DC bus type UPS device | |
| CN207851174U (en) | A kind of inverter test device | |
| CN202276189U (en) | Control power supply dual-channel power supplying device for high voltage inverter | |
| CN218733383U (en) | Mobile charging device | |
| CN203983813U (en) | A kind of 35kV combined transformer for photovoltaic generation | |
| CN217240397U (en) | Automatic switching supply device for direct-current emergency power supply and direct-current power supply system | |
| CN203135585U (en) | Four-in-one device integrating functions of protection, control, measurement and reactive power switch and used for transformer substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141217 |