CN103516046A - Photovoltaic and super-capacitor type alternating-current and direct-current integrated power source used in mobile substation - Google Patents
Photovoltaic and super-capacitor type alternating-current and direct-current integrated power source used in mobile substation Download PDFInfo
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- CN103516046A CN103516046A CN201210200049.2A CN201210200049A CN103516046A CN 103516046 A CN103516046 A CN 103516046A CN 201210200049 A CN201210200049 A CN 201210200049A CN 103516046 A CN103516046 A CN 103516046A
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Abstract
The invention relates to a photovoltaic and super-capacitor type alternating-current and direct-current integrated power source used in a mobile substation. The photovoltaic and super-capacitor type alternating-current and direct-current integrated power source comprises a three-phase power source main loop, an energy storage device, and a photovoltaic power generation device. The photovoltaic and super-capacitor type alternating-current and direct-current integrated power source is characterized in that two phases of the three-phase power source main loop are connected with an alternating-current load circuit through circuit breakers respectively, one phase of the three-phase power source main loop is connected with the alternating-current load circuit through a disconnecting switch, an inverter alternating-current input circuit breaker and an inverter, and the output of the photovoltaic power generation device is connected in parallel to the output end of the disconnecting switch in the three-phase power source main loop through the disconnecting switch. The energy storage device is the power source is a super-capacitor device. A low-voltage discharge output circuit is formed by a multi-level direct-current conversion circuit. According to the invention, the substation is combined with the solar photovoltaic power generation system and the super-capacitor, so the alternating-current and direct-current output integration can be realized, and the reliability of power supply can be ensured.
Description
Technical field
The present invention relates to a kind of transforming plant source apparatus, particularly photovoltaic and super capacitor AC/DC integrated power supply for a kind of mobile substation.
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.While meeting urban district large-area power-cuts; in order to save city's electric resources; the a lot of equipment of transformer station has 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, the demand, the needs that are difficult to meet intelligent substation equipment frequent movement often detect 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 by solar energy and Novel energy storage apparatus and photovoltaic and super capacitor AC/DC integrated power supply for mobile substation that existing alterating and direct current source apparatus is combined.
The object of the present invention is achieved like this: photovoltaic and super capacitor AC/DC integrated power supply for a kind of mobile substation, comprise three phase mains major loop, energy storage device, photovoltaic power generation apparatus, it is characterized in that passing through respectively circuit breaker Q F1 in the two-phase of three phase mains major loop, QF2 is connected with AC load circuit, one mutually by isolating switch G1, inverter exchanges 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 form the power supply major loop by the external mains-supplied of transformer station, or provide two-phase and photovoltaic power generation apparatus that the power supply major loop of individual event power supply is provided by the external civil power of transformer station, or by photovoltaic power generation apparatus, provided the power supply major loop of individual event power supply, three phase mains major loop and photovoltaic power generation apparatus are connected with energy storage device by isolating switch G1, G2 and circuit breaker Q F4, charging module DMK1-4, contactor KM1 respectively, form photovoltaic charged loop or transformer station's power source charges loop, energy storage device output is connected with DC load circuit.
Described energy storage device is super-capacitor device, mainly ultracapacitor, capacitor voltage equalizing device, voltage monitor, the regular picture output circuit and the low pressure discharge output circuit that are connected between ultracapacitor and load circuit, consists of.
Described low pressure discharge output circuit is to consist of the multistage DC transfer circuit of exporting different electric pressures, 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, realize alternating current-direct current output integrated, guarantee 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, and the load of exporting by reasonable disposition three-phase guarantees electrical network three-phase equilibrium.Utilize the charging rate of ultracapacitor fast, the feature of high power density, arranges the Voltage-output of different stage, can make capacitor discharge reach the limit of voltage, makes 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 main Shi You of the present invention transformer station three phase mains major loop 1, photovoltaic power generation apparatus 2, super-capacitor device 3 form.The three-phase alternating current input terminal 4 of transformer station's three phase mains major loop is connected with transformer with station, wherein, A, B are mutually respectively through exchanging input circuit breaker Q F1, QF2 output AC electricity to AC load circuit 5, C is through exchanging input isolating switch G1, inverter interchange input circuit breaker Q F3, inverter MK1 output AC electricity to AC load circuit 5, the in the situation that of C cross streams electricity dead electricity, direct current is through contactor KM5 input inverter, the alternating current of inversion, to AC load circuit 5, is also provided with electric current, voltage dial gauge PA1, PV1 in C phase line simultaneously.
Photovoltaic power generation apparatus is to consist of photovoltaic battery panel and inverter, its output is through isolating switch G2 and receive the output that exchanges input isolating switch G1 in three phase mains major loop, by this syndeton, can form the power supply major loop by the external mains-supplied of transformer station; By the external civil power of transformer station, provide two-phase and photovoltaic power generation apparatus that the power supply major loop of individual event power supply is provided; The power supply major loop of individual event power supply is provided by photovoltaic power generation apparatus.The output of photovoltaic power generation apparatus is also that super-capacitor device 3 be connected with charging module DMK1-4, capacitor charging contactor KM1, current/voltage dial gauge PA2, PV2 with energy storage device by isolating switch G2, the total input of interchange circuit breaker Q F4, the C 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, the total input of interchange circuit breaker Q F4 mutually, form photovoltaic charged loop or transformer station's power source charges loop, the capacitor in super-capacitor device charges.On capacitor charging contactor KM1 and be connected to charging bypass breaker QF6.
Ultracapacitor, capacitor voltage equalizing device, voltage monitor has formed 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 is established three grades of DC transfer circuit, by direct current input contactor KM1-3 and DC power supplier DYBH1-3, formed, 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 is changed circuit breaker to DC load circuit through low-voltage electric energy.
In order to reach stable access photovoltaic power generation apparatus in three phase mains major loop, guarantee power supply three-phase equilibrium, adopted and in AC/DC integrated power supply, done output configuration, exchanging output, be hung on out of phase bus.For civil power used, solar energy, Ultracapacitor Energy Storage can according to priority be powered according to on-the-spot different situations, adopted the parts such as isolating switch to control simultaneously.
AC/DC integrated power supply is when normal, in three phase mains major loop, adopt A, the external civil power of B Xiang Wei transformer station, C is according to priority sequentially first provided by photovoltaic power generation apparatus mutually, when the load of going up mutually as C has exceeded photovoltaic generation power grade, photovoltaic power generation grid-connected inverter is exported the external civil power of ，You transformer station by power-limiting and is provided.
When the external mains failure of transformer station, the AC load of A, B phase is by automatic disconnection.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 sequentially, first by photovoltaic power generation apparatus, provided, and when load has exceeded photovoltaic generation power grade, part energy is provided by ultracapacitor electric discharge.
When transformer station has a power failure, photovoltaic power generation apparatus is during because of the fault of equipment itself or photovoltaic cell off-capacity, and DC load circuit will all be discharged and be provided by ultracapacitor.Energy storage device adopts ultracapacitor to discharge to greatest extent electric energy, and having overcome use storage battery can not be lower than 180 VDC, otherwise will damage the problem of storage battery.By voltage monitor, super capacitor is monitored in real time, 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, by low pressure discharge output circuit, continue as DC load circuit supply, low pressure discharge output circuit arranges three grades of DC transfer circuit, wherein first order DC transfer circuit is exported 120-180VDC, second level DC transfer circuit output 80-120VDC, third level DC transfer circuit output 50-80VDC, carries out the switching of DC transfer circuit at different levels according to the monitoring result of voltage monitor.For guaranteeing the continuity of power supply, while avoiding switching under critical voltage, there is output disruption, during design, in handoff procedure, done buffered, as when 180VDC has been arrived in ultracapacitor voltage drop, start first order DC transfer circuit, KM2 is closed for direct current input contactor; When ultracapacitor voltage continues to drop to 120V, first start second level DC transfer circuit, KM3 is closed for direct current input contactor, after second level DC transfer circuit is stable, cut off again direct current input contactor KM2 in first order DC transfer circuit, by that analogy, realize and automatically switching, guarantee for electrical stability.Voltage monitor also carries out charge protection for the protection of ultracapacitor.
Claims (3)
- Photovoltaic and super capacitor AC/DC integrated power supply for 1.Yi Zhong mobile substation, comprise three phase mains major loop, energy storage device, photovoltaic power generation apparatus, it is characterized in that passing through respectively circuit breaker Q F1 in the two-phase of three phase mains major loop, QF2 is connected with AC load circuit, one mutually by isolating switch G1, inverter exchanges 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 form the power supply major loop by the external mains-supplied of transformer station, or provide two-phase and photovoltaic power generation apparatus that the power supply major loop of individual event power supply is provided by the external civil power of transformer station, or by photovoltaic power generation apparatus, provided the power supply major loop of individual event power supply, three phase mains major loop and photovoltaic power generation apparatus are connected with energy storage device by isolating switch G1, G2 and circuit breaker Q F4, charging module DMK1-4, contactor KM1 respectively, form photovoltaic charged loop or transformer station's power source charges loop, energy storage device output is connected with DC load circuit.
- 2. photovoltaic and super capacitor AC/DC integrated power supply for mobile substation according to claim 1, it is characterized in that described energy storage device is super-capacitor device, mainly by ultracapacitor, capacitor voltage equalizing device, voltage monitor, the regular picture output circuit and the low pressure discharge output circuit that are connected between ultracapacitor and load circuit, formed.
- 3. photovoltaic and super capacitor AC/DC integrated power supply for mobile substation according to claim 1, it is characterized in that described low pressure discharge output circuit is to consist of the multistage DC transfer circuit of exporting different electric pressures, 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 |
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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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| 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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| CN103516046B CN103516046B (en) | 2015-12-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106998099A (en) * | 2017-02-27 | 2017-08-01 | 国网福建省电力有限公司 | Mobile energy storage for power supply system access withdrawal control method in the case of uninterrupted power supply |
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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US11034367B2 (en) | 2016-08-30 | 2021-06-15 | Crrc Zhuzhou Locomotive Co., Ltd | Diesel multiple unit, and electricity supply system and traction control method therefor |
| CN106998099A (en) * | 2017-02-27 | 2017-08-01 | 国网福建省电力有限公司 | Mobile energy storage for power supply system access withdrawal control method in the case of uninterrupted power supply |
| 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 |
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| CN103516046B (en) | 2015-12-16 |
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