CN204190499U - Support the distribution line on-line monitoring acquisition terminal of solar energy power taking - Google Patents
Support the distribution line on-line monitoring acquisition terminal of solar energy power taking Download PDFInfo
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- CN204190499U CN204190499U CN201420736976.0U CN201420736976U CN204190499U CN 204190499 U CN204190499 U CN 204190499U CN 201420736976 U CN201420736976 U CN 201420736976U CN 204190499 U CN204190499 U CN 204190499U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 40
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000004146 energy storage Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 33
- 238000004891 communication Methods 0.000 claims description 9
- 229910018095 Ni-MH Inorganic materials 0.000 claims description 5
- 229910018477 Ni—MH Inorganic materials 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000007812 deficiency Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model discloses a kind of distribution line on-line monitoring acquisition terminal supporting solar energy power taking, for coordinating the ruuning situation to monitor distribution line with line-failure indicator, comprise the signal processing for monitoring ruuning situation, it sets up the photovoltaic automatic electricity getting part be electrically connected with described signal processing, for solar energy being converted to electric energy and output services voltage, comprise: photovoltaic battery panel, solar energy is converted to electric energy and carries out energy storage; Charging circuit, connects described photovoltaic battery panel, converts electrical energy into described operating voltage; And the switching circuit be connected between described photovoltaic battery panel and charging circuit, for controlling the direct connection between photovoltaic battery panel and described charging circuit, or control the direct connection of each circuit in described charging circuit.
Description
Technical field
The utility model embodiment relates generally to distribution distribution technique, particularly relates to a kind of distribution line on-line monitoring acquisition terminal supporting solar energy power taking.
Background technology
Distribution line long transmission distance, branch line are many, and how in network structure, its trouble shoot is very difficult.Distribution line on-line monitoring acquisition terminal matches with intelligent line fault detector, can the normal operation of Real-Time Monitoring circuit and fault generating process, detects and indicates short circuit and earth fault.This will to understand the operation conditions of circuit in real time to operation maintenance personnel for distribution line, location, maintenance etc. after fault occurs bring great convenience.
Because the distribution line multidigit of overhead line type is in field, the power supply of distribution line on-line monitoring terminal will run into great difficulty.Current common way uses in parallel with stand-by power supply for photovoltaic cell.By photovoltaic cell be reserve battery charge, photovoltaic cell rear guard distribution line in parallel with reserve battery on-line monitoring terminal is powered.Owing to need consider the rainy weather of many days, reserve battery need support the operation of more than 10 days of distribution line on-line monitoring terminal.
Because the power of photovoltaic cell is very large by weather effect, its output stage is unstable, thus effectively cannot control the charging current to reserve battery.Due to the high temperature at scene in outdoor summer, and lithium battery operation in high temperature environments has certain safety risks, and under some harsh conditions, lithium battery there will be the situations such as high temperature bulge even bursts.Therefore reserve battery many employings lead-acid battery and Ni-MH battery, and the memory effect of these two kinds of reserve batteries is all more serious.Irregular charging current will affect the useful life of these two kinds of batteries greatly.In addition, after the tele-release of reserve battery is complete, the output of photovoltaic cell can only be relied at short notice to be the energy supply of distribution line on-line monitoring acquisition terminal, and due to the power supply instability of photovoltaic cell, also just cannot to make distribution line on-line monitoring acquisition terminal steady operation.
Utility model content
The utility model solves aforementioned techniques defect, a kind of distribution line on-line monitoring acquisition terminal supporting solar energy power taking is provided, for coordinating the ruuning situation to monitor distribution line with line-failure indicator, comprise the signal processing for monitoring ruuning situation, its improvement is to set up the photovoltaic automatic electricity getting part be electrically connected with described signal processing, for solar energy being converted to electric energy and output services voltage, comprising: photovoltaic battery panel, solar energy being converted to electric energy and carrying out energy storage; Charging circuit, connects described photovoltaic battery panel, converts electrical energy into described operating voltage; And the switching circuit be connected between described photovoltaic battery panel and charging circuit, for controlling the direct connection between photovoltaic battery panel and described charging circuit, or control the direct connection of each circuit in described charging circuit.
In one embodiment, described charging circuit comprises: reserve battery, provides stable operating voltage when distribution line load long-time power output deficiency; Super capacitor, for carrying out buffer memory to the energy from photovoltaic battery panel at short notice, with the output voltage of stable photovoltaic battery panel and power, and stablize the charging current of described reserve battery and the operating voltage of described distribution line on-line monitoring acquisition terminal; And charge management circuit, connect between described reserve battery and super capacitor and select with the type according to reserve battery corresponding recharge logic to extend the life cycle of described reserve battery.
Super capacitor be a kind of between traditional capacitor and battery, there is the power supply of property, mainly rely on electric double layer and redox capacitance charge store electrical energy.But chemical reaction does not occur in the process of its energy storage, this thermal energy storage process is reversible.Therefore super capacitor has the obvious advantages such as power density is high, the discharge and recharge time is short, have extended cycle life, operating temperature range is wide.
Photovoltaic cell, super capacitor, reserve battery parallel connection use by the present embodiment, super capacitor is as a Buffer Pool, when by weather effect, power output changes photovoltaic battery panel, super capacitor bears the task into reserve battery charging at short notice, this stabilizes the charging current of reserve battery to a certain extent, thus whole charging flow can not be interrupted, improve the charge efficiency of reserve battery, also greatly improve the useful life of reserve battery.
Super capacitor uses with the in parallel of photovoltaic cell the power stage stablizing photovoltaic cell to a certain extent, after reserve battery is discharged, also can improves the power supply of distribution line on-line monitoring acquisition terminal to a certain extent, improves the operation stability of distribution line on-line monitoring acquisition terminal
In one embodiment, described recharge logic is in a predetermined period, detect described reserve battery service condition and current capacity, thus stablizes its output current.
In one embodiment, described switching circuit comprises the paralleling switch diode D2 be connected between photovoltaic battery panel and reserve battery, and D3 prevents described reserve battery to charge to super capacitor, or prevents photovoltaic battery panel to charge directly to reserve battery.In another embodiment, described switching circuit comprises the switching diode D1 be connected between described photovoltaic battery panel and reserve battery, prevents the electric energy of reserve battery to be back to described photovoltaic battery panel.
In one embodiment, described reserve battery selects Ni-MH battery or lead-acid battery.
In another embodiment, a kind of distribution line on-line monitoring acquisition terminal supporting solar energy power taking, for coordinating the ruuning situation to monitor three-phase distribution circuit with line-failure indicator, its Curve guide impeller is to comprise: the power supply connecting distribution line, it has high-tension line automatic electricity getting part, for obtaining operating voltage from distribution line, comprising: photovoltaic battery panel, the power conversion on distribution line is powered to carry out isolation to circuit secondary side; Charging circuit, is stored this energy and is converted to described operating voltage; And the switching circuit be connected between described photovoltaic battery panel and charging circuit, directly charge to described charging circuit for controlling photovoltaic battery panel; And communication ends, for wirelessly communicating to connect with described line-failure indicator and far-end main station system respectively.
In one embodiment, described line-failure indicator comprises A, B, C phase line-failure indicator be connected in respectively in A, B, C three-phase power line, connects described communication ends by infrared mode.
In one embodiment, described communication ends connects far-end main station system by WIFI or wired ethernet mode.
In one embodiment, described charging circuit comprises: reserve battery, provides stable operating voltage when distribution line load long-time power output deficiency; Super capacitor, for carrying out buffer memory to the energy from photovoltaic battery panel at short notice, with the output voltage of stable photovoltaic battery panel and power, and stablize the charging current of described reserve battery and the operating voltage of described distribution line on-line monitoring acquisition terminal; And charge management circuit, connect between described reserve battery and super capacitor and select with the type according to reserve battery corresponding recharge logic to extend the life cycle of described reserve battery.
In one embodiment, described recharge logic is in a predetermined period, detect described reserve battery service condition and current capacity, thus stablizes its output current.
In one embodiment, described switching circuit comprises the paralleling switch diode D2 be connected between photovoltaic battery panel and reserve battery, and D3 prevents described reserve battery to charge to super capacitor, or prevents photovoltaic battery panel to charge directly to reserve battery.
In one embodiment, described reserve battery selects Ni-MH battery or lead-acid battery.
The utility model technique effect is apparent, and compared with high pressure P T energy supply, photovoltaic battery panel reduces cost, avoids ferro resonance, greatly improves the fail safe of electrical network.Compared with photovoltaic cell energy supply, the confession stabilizability of photovoltaic battery panel increases greatly, and due to energy supply threshold electric current less, the effective power-on time therefore within a day also increases substantially.With under the cooperation of super capacitor, the line load fluctuation of part short time can be offset, further increase the stability of energy supply, meet the energy supply demand of distribution line on-line monitoring terminal, following advantage can be brought thus: more intactly can realize the charge and discharge process to reserve battery, thus add the useful life of reserve battery.The capacity of required reserve battery also decreases, thus also reduces the cost of whole device.After reserve battery is discharged, photovoltaic battery panel still can provide stable electric energy for distribution line on-line monitoring terminal.
Accompanying drawing explanation
Fig. 1 is the structure function block diagram of the distribution line on-line monitoring acquisition terminal supporting solar energy power taking;
Fig. 2 is the equalizer circuit figure for multistage super capacitor.
Embodiment
With reference to Fig. 1, support that the distribution line on-line monitoring acquisition terminal of solar energy power taking has set up a high-tension line automatic electricity getting part, for obtaining operating voltage from distribution line, comprising: photovoltaic battery panel 1, the power conversion on distribution line is powered to carry out isolation to circuit secondary side; Charging circuit, is stored this energy and is converted to described operating voltage; And the switching circuit be connected between described photovoltaic battery panel 1 and charging circuit, directly charge to described charging circuit for controlling photovoltaic battery panel.Distribution line on-line monitoring acquisition terminal coordinates with the intelligent line fault detector on distribution line, realizes the operation conditions to distribution line, fault generating process carries out Real-Time Monitoring, can detect and indicate the fault such as short circuit, ground connection.Meanwhile, by wireless or wire message way by the information real-time report that monitors to main station system, the state estimation run for circuit, the repairing of fault provide foundation, improve power supply quality.
In one embodiment, described charging circuit comprises: reserve battery 2, provides stable operating voltage when distribution line load long-time power output deficiency; Super capacitor 3, for carrying out buffer memory to the energy from photovoltaic battery panel at short notice, with the output voltage of stable photovoltaic battery panel and power, and stablize the charging current of described reserve battery and the operating voltage of described distribution line on-line monitoring acquisition terminal; And charge management circuit 4, connect between described reserve battery and super capacitor and select with the type according to reserve battery corresponding recharge logic to extend the life cycle of described reserve battery.
In one embodiment, described recharge logic is in a predetermined period, detect described reserve battery service condition and current capacity, thus stablizes its output current.
In one embodiment, described switching circuit comprises the paralleling switch diode D2 be connected between photovoltaic battery panel and reserve battery, and D3 prevents described reserve battery to charge to super capacitor, or prevents photovoltaic battery panel to charge directly to reserve battery.Described switching circuit comprises the switching diode D1 be connected between described photovoltaic battery panel and reserve battery, prevents the electric energy of reserve battery to be back to described photovoltaic battery panel.
In one embodiment, described reserve battery selects Ni-MH battery or lead-acid battery.
In another embodiment, a kind of distribution line on-line monitoring acquisition terminal supporting solar energy power taking, for coordinating the ruuning situation to monitor three-phase distribution circuit with line-failure indicator, its Curve guide impeller is to comprise: the power supply connecting distribution line, it has high-tension line automatic electricity getting part, for obtaining operating voltage from distribution line, comprising: photovoltaic battery panel, the power conversion on distribution line is powered to carry out isolation to circuit secondary side; Charging circuit, is stored this energy and is converted to described operating voltage; And the switching circuit be connected between described photovoltaic battery panel and charging circuit, directly charge to described charging circuit for controlling photovoltaic battery panel; And communication ends, for wirelessly communicating to connect with described line-failure indicator and far-end main station system respectively.
In one embodiment, described line-failure indicator comprises A, B, C phase line-failure indicator be connected in respectively in A, B, C three-phase power line, described communication ends is connected by infrared mode, by short-distance wireless, wheel inquiry is carried out to three-phase intelligent line-failure indicator, obtain the real-time current of three-phase line, detection line to earth electric field, judge the malfunctions such as the phase fault of circuit, single-phase earthing.
In one embodiment, described communication ends connects far-end main station system by WIFI or wired ethernet mode, is connected with main station system by GPRS wireless public network, and by the real-time current of three-phase line, to earth electric field timing report main station system.And by malfunction real-time report such as the phase fault of circuit, single-phase earthings to main website.To improve the response speed of fault, improve power supply quality.
In one embodiment as shown in figure 2, because the principle of super capacitor limit, the nominal of monomer super capacitor is withstand voltage general at 2.7V, and the excursion of photovoltaic cell voltage is comparatively large, and its rated voltage is considerably beyond 2.7V.Monomer super capacitor must use the requirement that could meet voltage by plural serial stage thus.For making energy mean allocation input voltage between serial connected super electric capacity, then must at super capacitor two ends and on the equalizer circuit shown in Fig. 2, wherein P end is connected with the positive pole of super capacitor 3, N end is connected with the negative pole of super capacitor 3, when the voltage of multistage super capacitor is lower than 2.7V voltage knee, and illustrated switching tube Q21 conducting, triode Q22 ends, circuit presents blocking characteristics, only has minimum leakage current to flow through, can not affect the voltage levvl of super capacitor 3 in circuit.And when the voltage of super capacitor is higher than 2.7V voltage knee, Q21 ends, Q22 conducting, and circuit presents stable state diode circuit characteristic, electric current presents with voltage increase and sharply increases, and voltage by clamper in diode U21, unnecessary electric current is released by multiple shunt resistance, or discharging the electric charge that overcharges, circuit voltage can not higher than 2.7V, the automatically equalizing voltage function therefore between this circuit realiration super capacitor.
Claims (10)
1. support the distribution line on-line monitoring acquisition terminal of solar energy power taking, for coordinating the ruuning situation to monitor distribution line with line-failure indicator, comprise the signal processing for monitoring ruuning situation, it is characterized in that setting up the photovoltaic automatic electricity getting part be electrically connected with described signal processing, for solar energy being converted to electric energy and output services voltage, comprising:
Photovoltaic battery panel, is converted to electric energy by solar energy and carries out energy storage;
Charging circuit, connects described photovoltaic battery panel, converts electrical energy into described operating voltage; And
Being connected to the switching circuit between described photovoltaic battery panel and charging circuit, for controlling the direct connection between photovoltaic battery panel and described charging circuit, or controlling the direct connection of each circuit in described charging circuit.
2. the distribution line on-line monitoring acquisition terminal of support solar energy according to claim 1 power taking, it is characterized in that, described charging circuit comprises:
Reserve battery, provides stable operating voltage when distribution line load long-time power output deficiency;
Super capacitor, for carrying out buffer memory to the energy from photovoltaic battery panel at short notice, with the output voltage of stable photovoltaic battery panel and power, and stablize the operating voltage of the charging current of described reserve battery and the distribution line on-line monitoring acquisition terminal of described support solar energy power taking; And
Charge management circuit, connects between described reserve battery and super capacitor and selects with the type according to reserve battery corresponding recharge logic to extend the life cycle of described reserve battery.
3. the distribution line on-line monitoring acquisition terminal of support solar energy according to claim 2 power taking, it is characterized in that, described recharge logic is in a predetermined period, detect described reserve battery service condition and current capacity, thus stablizes its output current.
4. the distribution line on-line monitoring acquisition terminal of support solar energy according to claim 2 power taking, it is characterized in that, described switching circuit comprises the paralleling switch diode D2 be connected between photovoltaic battery panel and reserve battery, D3, prevent described reserve battery to charge to super capacitor, or prevent photovoltaic battery panel to charge directly to reserve battery.
5. the distribution line on-line monitoring acquisition terminal of support solar energy according to claim 2 power taking, it is characterized in that, described switching circuit comprises the switching diode D1 be connected between described photovoltaic battery panel and reserve battery, prevents the electric energy of reserve battery to be back to described photovoltaic battery panel.
6. the distribution line on-line monitoring acquisition terminal of support solar energy according to claim 2 power taking, is characterized in that: described reserve battery selects Ni-MH battery or lead-acid battery.
7. support the distribution line on-line monitoring acquisition terminal of solar energy power taking for one kind, for coordinating the ruuning situation to monitor three-phase distribution circuit with line-failure indicator, it is characterized in that comprising: the power supply connecting distribution line, it has high-tension line automatic electricity getting part, for obtaining operating voltage from distribution line, comprising:
Photovoltaic battery panel, powers the power conversion on distribution line to carry out isolation to circuit secondary side;
Charging circuit, is stored this energy and is converted to described operating voltage; And
Being connected to the switching circuit between described photovoltaic battery panel and charging circuit, for controlling the direct connection between photovoltaic battery panel and described charging circuit, or controlling the direct connection of each circuit in described charging circuit; And
Communication ends, for wirelessly communicating to connect with described line-failure indicator and far-end main station system respectively.
8. the distribution line on-line monitoring acquisition terminal of support solar energy according to claim 7 power taking, it is characterized in that: described line-failure indicator comprises A, B, C phase line-failure indicator be connected in respectively in A, B, C three-phase power line, connects described communication ends by infrared mode.
9. the distribution line on-line monitoring acquisition terminal of support solar energy according to claim 7 power taking, is characterized in that: described communication ends connects far-end main station system by WIFI or wired ethernet mode.
10. the distribution line on-line monitoring acquisition terminal of support solar energy according to claim 7 power taking, it is characterized in that, described charging circuit comprises:
Reserve battery, provides stable operating voltage when distribution line load long-time power output deficiency;
Super capacitor, for carrying out buffer memory to the energy from photovoltaic battery panel at short notice, with the output voltage of stable photovoltaic battery panel and power, and stablize the charging current of described reserve battery and the operating voltage of described distribution line on-line monitoring acquisition terminal; And
Charge management circuit, connects between described reserve battery and super capacitor and selects with the type according to reserve battery corresponding recharge logic to extend the life cycle of described reserve battery.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736976.0U CN204190499U (en) | 2014-11-28 | 2014-11-28 | Support the distribution line on-line monitoring acquisition terminal of solar energy power taking |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420736976.0U CN204190499U (en) | 2014-11-28 | 2014-11-28 | Support the distribution line on-line monitoring acquisition terminal of solar energy power taking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377832A (en) * | 2014-11-28 | 2015-02-25 | 国家电网公司 | Distribution line online monitoring and collecting terminal supporting solar electricity getting |
| CN104898757A (en) * | 2015-03-16 | 2015-09-09 | 国家电网公司 | Power output control method of electric power acquisition system |
-
2014
- 2014-11-28 CN CN201420736976.0U patent/CN204190499U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377832A (en) * | 2014-11-28 | 2015-02-25 | 国家电网公司 | Distribution line online monitoring and collecting terminal supporting solar electricity getting |
| CN104377832B (en) * | 2014-11-28 | 2017-05-31 | 国家电网公司 | Support the distribution line on-line monitoring acquisition terminal of solar energy power taking |
| CN104898757A (en) * | 2015-03-16 | 2015-09-09 | 国家电网公司 | Power output control method of electric power acquisition system |
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