CN103516046B - Mobile substation photovoltaic and super capacitor AC/DC integrated power supply - Google Patents
Mobile substation photovoltaic and super capacitor AC/DC integrated power supply Download PDFInfo
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- CN103516046B CN103516046B CN201210200049.2A CN201210200049A CN103516046B CN 103516046 B CN103516046 B CN 103516046B CN 201210200049 A CN201210200049 A CN 201210200049A CN 103516046 B CN103516046 B CN 103516046B
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- 239000003990 capacitor Substances 0.000 title claims abstract description 24
- 238000010248 power generation Methods 0.000 claims abstract description 24
- 238000004146 energy storage Methods 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The present invention relates to a kind of mobile substation photovoltaic and super capacitor AC/DC integrated power supply, comprise three phase mains major loop, energy storage device, photovoltaic power generation apparatus, it is characterized in that connecting respectively by circuit breaker AC load circuit in the two-phase of three phase mains major loop, one passes through isolating switch mutually, inverter ac input circuit breaker, inverter is connected with AC load circuit, the output of photovoltaic power generation apparatus is by isolating switch and receive the output of isolating switch in three phase mains major loop, its energy storage device is super-capacitor device, low pressure discharge output circuit is made up of multistage DC transfer circuit, the present invention adopts transformer station and solar photovoltaic generation system, ultracapacitor combines, realize alternating current-direct current and export integration, ensure the reliability of power supply.
Description
Technical field
The present invention relates to a kind of transforming plant source apparatus, particularly a kind of mobile substation photovoltaic and super capacitor AC/DC integrated power supply.
Background technology
Existing transformer station generally adopts single circuit power supply, and what the important transformer station of minority adopted is double circuit power supply.When meeting urban district large-area power-cuts; in order to save city's electric resources; the a lot of equipment of transformer station is had to rely on DC back-up power supply as power supplies such as storage batterys, and the shortcoming of storage battery is that useful life is short, is difficult to meet the demand of intelligent substation equipment frequent movement, needs often carry out detecting and safeguard, needs arrange under-voltage protection, easy contaminated environment etc.
Summary of the invention
The object of the present invention is to provide a kind of mobile substation photovoltaic of being combined with existing alterating and direct current source apparatus by solar energy and Novel energy storage apparatus and super capacitor AC/DC integrated power supply.
The object of the present invention is achieved like this: a kind of mobile substation photovoltaic and super capacitor AC/DC integrated power supply, comprise three phase mains major loop, energy storage device, photovoltaic power generation apparatus, it is characterized in that two-phase at three phase mains major loop is respectively by circuit breaker Q F1, QF2 is connected with AC load circuit, one phase is by isolating switch G1, inverter ac input circuit breaker Q F3, inverter MK1 is connected with AC load circuit, the output of photovoltaic power generation apparatus is by isolating switch G2 and receive the output of isolating switch G1 in three phase mains major loop, by the setting of isolating switch, can be formed by the power supply major loop of the external mains-supplied of transformer station, or the power supply major loop providing two-phase and photovoltaic power generation apparatus to provide individual event to power by the external civil power of transformer station, or the power supply major loop providing individual event to power by photovoltaic power generation apparatus, three phase mains major loop and photovoltaic power generation apparatus are connected with energy storage device respectively by isolating switch G1, G2 and circuit breaker Q F4, charging module DMK1-4, contactor KM1, form photovoltaic charged loop or transformer station's power source charges loop, energy storage device exports and is connected with DC load circuit.
Described energy storage device is super-capacitor device, primarily of ultracapacitor, capacitor voltage equalizing device, voltage monitor, is connected to regular picture output circuit between ultracapacitor and load circuit and low pressure discharge output circuit is formed.
Described low pressure discharge output circuit is made up of the multistage DC transfer circuit exporting different electric pressure, and its input is connected with ultracapacitor, and output is connected with load circuit through low-voltage electric energy conversion circuit breaker.
Feature of the present invention is: adopt transformer station to combine with solar photovoltaic generation system, ultracapacitor, realizes alternating current-direct current and exports integration, ensure the reliability of power supply.Utilize photovoltaic generation, save electric energy, photovoltaic generating system adopts the mode of single-phase grid-connected access, and input cost is low, and sexual valence is high, the load exported by reasonable disposition three-phase, ensures electrical network three-phase equilibrium.Utilize the charging rate of ultracapacitor fast, the feature of high power density, the voltage arranging different stage exports, and capacitor discharge can be made to reach the limit of voltage, make full use of the electric energy of storage.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, 2, the present invention is mainly made up of transformer station's three phase mains major loop 1, photovoltaic power generation apparatus 2, super-capacitor device 3.The three-phase alternating current input terminal 4 of transformer station's three phase mains major loop is connected with station local coordinate frame, wherein, A, B phase is respectively through exchanging input circuit breaker Q F1, QF2 output AC electricity to AC load circuit 5, C phase is through exchanging input isolating switch G1, inverter ac input circuit breaker Q F3, inverter MK1 output AC electricity to AC load circuit 5, when C cross streams electricity dead electricity, direct current inputs inverter through contactor KM5, the alternating current of inversion, to AC load circuit 5, C phase line is also provided with electric current, voltage dial gauge PA1, PV1 simultaneously.
Photovoltaic power generation apparatus is made up of photovoltaic battery panel and inverter, it exports through isolating switch G2 and receives in three phase mains major loop the output exchanging input isolating switch G1, by this syndeton, can be formed by the power supply major loop of the external mains-supplied of transformer station; The power supply major loop providing two-phase and photovoltaic power generation apparatus to provide individual event to power by the external civil power of transformer station; The power supply major loop providing individual event to power by photovoltaic power generation apparatus.The output of photovoltaic power generation apparatus is also connected with energy storage device and super-capacitor device 3 with charging module DMK1-4, capacitor charging contactor KM1, current/voltage dial gauge PA2, PV2 by isolating switch G2, interchange total input circuit breaker Q F4, the C phase of three phase mains major loop is connected with super-capacitor device 3 with charging module DMK1-4, capacitor charging contactor KM1, current/voltage dial gauge PA2, PV2 by isolating switch G1, interchange total input circuit breaker Q F4, form photovoltaic charged loop or transformer station's power source charges loop, to the capacitor charging in super-capacitor device.Capacitor charging contactor KM1 is connected to charged bypass circuit breaker Q F6.
Ultracapacitor, capacitor voltage equalizing device, voltage monitor constitutes ultracapacitor current supply circuit, this loop can be connected with DC load circuit 6 by regular picture output circuit, regular picture output circuit is provided with electric current, voltage dial gauge PA3, PV3, also can be connected with DC load circuit by low pressure discharge output circuit 7, low pressure discharge output circuit is multistage DC transfer circuit, the present embodiment establishes three grades of DC transfer circuit, input contactor KM1-3 and DC power supplier DYBH1-3 by direct current to form, wherein, the output voltage of one-level DC transfer circuit is 120-180VDC, the output voltage of secondary DC transfer circuit is 80-120VDC, the output voltage of three grades of DC transfer circuit is 50-80VDC, input through low-voltage electric energy conversion circuit breaker to DC load circuit.
In order to stable access photovoltaic power generation apparatus in three phase mains major loop can be reached, ensure power supply three-phase equilibrium, have employed and do output configuration in AC/DC integrated power supply, interchange output is hung on out of phase bus.Simultaneously in order to make civil power used, solar energy, Ultracapacitor Energy Storage according to priority can power according to the different situations at scene, have employed the parts such as isolating switch and controlling.
AC/DC integrated power supply is when normal, adopt A, B phase for the external civil power of transformer station in three phase mains major loop, C phase according to priority order is first provided by photovoltaic power generation apparatus, when the load in C phase is beyond photovoltaic generation power grade, power-limiting exports by photovoltaic power generation grid-connected inverter, is provided by the external civil power of transformer station.
When the external mains failure of transformer station, the AC load of A, B phase will disconnect automatically.C phase load will be provided by photovoltaic power generation apparatus.Wherein AC load circuit is all provided by photovoltaic power generation apparatus, and DC load circuit according to priority order, first provided by photovoltaic power generation apparatus, when load is beyond photovoltaic generation power grade, part energy is discharged by ultracapacitor to be provided.
When transformer station has a power failure, when photovoltaic power generation apparatus is because of the fault of equipment itself or photovoltaic cell off-capacity, DC load circuit will all be provided by ultracapacitor electric discharge.Energy storage device adopts ultracapacitor can discharge electric energy to greatest extent, overcomes and uses storage battery lower than 180VDC, otherwise can not will damage the problem of storage battery.Monitored in real time super capacitor by voltage monitor, ultracapacitor, when normal capacity, is directly DC load circuit supply by regular picture output circuit.When the voltage on capacitor is low to moderate 180VDC, DC load circuit supply is continued as by low pressure discharge output circuit, low pressure discharge output circuit arranges three grades of DC transfer circuit, wherein first order DC transfer circuit exports 120-180VDC, second level DC transfer circuit exports 80-120VDC, third level DC transfer circuit exports 50-80VDC, carries out the switching of DC transfer circuit at different levels according to the monitoring result of voltage monitor.For ensureing the continuity of power supply, occur when switching under avoiding critical voltage exporting disruption, in handoff procedure, done buffered during design, as when 180VDC has been arrived in ultracapacitor voltage drop, start first order DC transfer circuit, direct current input contactor KM2 closes; When ultracapacitor voltage continues to drop to 120V, first start second level DC transfer circuit, direct current input contactor KM3 closes, after second level DC transfer circuit is stable, cut off direct current input contactor KM2 in first order DC transfer circuit again, by that analogy, realize automatically switching, ensure for electrical stability.Voltage monitor also carries out charge protection for the protection of ultracapacitor.
Claims (1)
1. a mobile substation photovoltaic and super capacitor AC/DC integrated power supply, comprise three phase mains major loop, energy storage device, photovoltaic power generation apparatus, it is characterized in that two-phase at three phase mains major loop is respectively by circuit breaker Q F1, QF2 is connected with AC load circuit, one phase is by isolating switch G1, inverter ac input circuit breaker Q F3, inverter MK1 is connected with AC load circuit, the output of photovoltaic power generation apparatus is by isolating switch G2 and receive the output of isolating switch G1 in three phase mains major loop, by the setting of isolating switch, formed by the power supply major loop of the external mains-supplied of transformer station, or the power supply major loop providing two-phase and photovoltaic power generation apparatus to provide individual event to power by the external civil power of transformer station, or the power supply major loop providing individual event to power by photovoltaic power generation apparatus, three phase mains major loop and photovoltaic power generation apparatus are connected with energy storage device respectively by isolating switch G1, G2 and circuit breaker Q F4, charging module DMK1-4, contactor KM1, form photovoltaic charged loop or transformer station's power source charges loop, energy storage device exports and is connected with DC load circuit, described energy storage device is super-capacitor device, primarily of ultracapacitor, capacitor voltage equalizing device, voltage monitor, is connected to regular picture output circuit between ultracapacitor and load circuit and low pressure discharge output circuit is formed, described low pressure discharge output circuit is made up of the multistage DC transfer circuit exporting different electric pressure, and its input is connected with ultracapacitor, and output is connected with load circuit through low-voltage electric energy conversion circuit breaker.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210200049.2A CN103516046B (en) | 2012-06-18 | 2012-06-18 | Mobile substation photovoltaic and super capacitor AC/DC integrated power supply |
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| CN201210200049.2A CN103516046B (en) | 2012-06-18 | 2012-06-18 | Mobile substation photovoltaic and super capacitor AC/DC integrated power supply |
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| CN103516046A CN103516046A (en) | 2014-01-15 |
| CN103516046B true CN103516046B (en) | 2015-12-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106274508A (en) | 2016-08-30 | 2017-01-04 | 中车株洲电力机车有限公司 | A kind of Diesel Multiple Unit and electric power system thereof and traction control method |
| CN106998099B (en) * | 2017-02-27 | 2020-03-27 | 国网福建省电力有限公司 | Mobile energy storage power supply system access and exit control method under uninterrupted power supply condition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237691A (en) * | 2011-07-06 | 2011-11-09 | 东北大学 | Wind energy and solar energy grid-connected generation system and control method thereof |
| CN202798137U (en) * | 2012-06-18 | 2013-03-13 | 辽宁省电力有限公司大连供电公司 | Photovoltaic and super-capacitor AC (alternating current)-DC (direct current) integrated power supply for mobile substation |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237691A (en) * | 2011-07-06 | 2011-11-09 | 东北大学 | Wind energy and solar energy grid-connected generation system and control method thereof |
| CN202798137U (en) * | 2012-06-18 | 2013-03-13 | 辽宁省电力有限公司大连供电公司 | Photovoltaic and super-capacitor AC (alternating current)-DC (direct current) integrated power supply for mobile substation |
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| CN103516046A (en) | 2014-01-15 |
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