CN105098786A - System and method for stabilizing voltage fluctuation of wind power micro-grid employing super capacitors - Google Patents
System and method for stabilizing voltage fluctuation of wind power micro-grid employing super capacitors Download PDFInfo
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- CN105098786A CN105098786A CN201510598999.9A CN201510598999A CN105098786A CN 105098786 A CN105098786 A CN 105098786A CN 201510598999 A CN201510598999 A CN 201510598999A CN 105098786 A CN105098786 A CN 105098786A
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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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The invention discloses a method for stabilizing voltage fluctuation of a wind power micro-grid employing super capacitors, and relates to the technical fields of micro-grids and wind power generation, in particular to wind power stabilization employing the super capacitors in the wind power micro-grid. The method is mainly applied to stabilization of the voltage fluctuation in the micro-grid which is composed of a wind power system. The invention provides a detailed principle and a system structure diagram for stabilizing the voltage fluctuation of the wind power micro-grid employing the super capacitors. The system comprises a wind power generation unit, a capacitance compensation device, a super capacitor bank, a two-way direct-current/direct-current (DC/DC) converter, a voltage source inverter and a filter circuit. As a super capacitor energy storage unit and a direct-current bus interface, the structure of the boost-buck two-way DC/DC converter is analyzed; and through pulse-width modulation (PWM) control, the duty ratios of switch tubes T1 and T2 are changed, so that charge and discharge control by the super capacitors is realized; the DC/DC converter is controlled by an outer voltage loop and inner current loop double-closed loop control strategy; and meanwhile, the specific control mode of power exchange by the super capacitors is provided.
Description
Technical field
The present invention relates to micro-capacitance sensor, technical field of wind power generation, be specifically related to a kind of ultracapacitor and stabilize wind-powered electricity generation micro-capacitance sensor voltage fluctuation system and method thereof.
Background technology
Wind-powered electricity generation is clean, pollution-free due to it, becomes the regenerative resource of most exploitation competitiveness.But wind-powered electricity generation is subject to the extraneous factor impacts such as wind speed change, power output has fluctuation and randomness, affects wind-powered electricity generation output reliability, and the quality of power supply needs to improve further.Especially along with the further raising of wind-powered electricity generation permeability, the impact of wind-powered electricity generation on micro-capacitance sensor can not be ignored.Supporting energy storage device is installed, takes certain energy storage control strategy, effectively can stabilize wind power fluctuation, promote micro-capacitance sensor power supply quality.Because Ultracapacitor Energy Storage has high power density, have extended cycle life, power handling capacity and response speed fast can be had by releasability fast, become and realize wind power and to fluctuate the effective means stabilized fast.
Summary of the invention
The object of the present invention is to provide and a kind ofly apply the method that ultracapacitor stabilizes the voltage fluctuation of wind-powered electricity generation micro-capacitance sensor.
A kind of ultracapacitor stabilizes wind-powered electricity generation micro-capacitance sensor voltage fluctuation system, and this system is made up of wind power generation unit, Electric capacity compensation device, bank of super capacitors, two-way DC/DC converter, voltage source inverter and filter circuit; This system comprises the two-way DC/DC converter of buck, bank of super capacitors energy-storage units is connected with DC bus, T1, T2 are full-controlled switch device, D1, D2 are antiparallel fly-wheel diode, controlled by PWM, change the duty ratio of T1, T2 switching tube, thus realize the charge and discharge control of ultracapacitor.
This system is carried and is carried out current transformer control by converter voltage outer shroud and current inner loop double-loop control strategy, reference voltage V
refwith converter output voltage V
dCcompare, send into voltage PI regulator, obtain high voltage side current control signal I
hV, this signal, through the process of signal operation mechanism, obtains reference current signal I
ref, and ultracapacitor measured current signal I
dCcompare, send into current PI adjuster, by PWM controller, output signal and break-make control is carried out to T1, T2.
System gives the control mode that bank of super capacitors carries out Power Exchange, when wind power output power is greater than given power, bank of super capacitors is charged, two-way DC/DC converter is operated in buck circuit pattern, when wind power output power is not enough, when being less than the given power of system, bank of super capacitors is discharged, and two-way DC/DC converter is operated in boost chopper pattern.
Accompanying drawing explanation
Fig. 1 application ultracapacitor stabilizes the system construction drawing of wind-powered electricity generation micro-capacitance sensor voltage fluctuation;
The two-way DC/DC transformer configuration figure of Fig. 2 buck;
Fig. 3 two-way DC/DC convertor controls policy construction figure.
Embodiment
In order to make to be engaged in wind power generation, energy storage technology pertinent art can understand the present invention program better, is described in detail with reference to the accompanying drawings to embodiment of the present invention.
Ultracapacitor stabilizes the structure chart of the system of wind-powered electricity generation micro-capacitance sensor voltage fluctuation as shown in Figure 1, and this system is made up of wind power generation unit, Electric capacity compensation device, bank of super capacitors, two-way DC/DC converter, voltage source inverter and filter circuit.Assuming that the stable operation of wind-powered electricity generation micro-grid system, wind-powered electricity generation unit and ultracapacitor energy storage unit, jointly to external power grid injecting power, are provided with merit, reactive power are respectively P
ref, Q
ref, when affecting by wind speed or extraneous factor, cause wind power to export as meritorious P
wIND, idle Q
wIND, ultracapacitor energy storage compensates fast, exports and gains merit for P
ref-P
wIND, idle is Q
ref-Q
wIND, then from external power grid, the power of injection is constant, thus can keeping system power-balance, and ME for maintenance is stablized.
Ultracapacitor energy storage unit and DC bus interface adopt the two-way DC/DC converter of buck, as shown in Figure 2, T1, T2 are full-controlled switch device, D1, D2 are antiparallel fly-wheel diode, controlled by PWM, change the duty ratio of T1, T2 switching tube, thus realize the charge and discharge control of ultracapacitor.DC/DC converter adopts the control strategy shown in Fig. 3, carries out current transformer control, reference voltage V by converter voltage outer shroud and current inner loop double-loop control strategy
refwith converter output voltage V
dCcompare, send into voltage PI regulator, obtain high voltage side current control signal I
hV, this signal, through the process of signal operation mechanism, obtains reference current signal I
ref, and ultracapacitor measured current signal I
dCcompare, send into current PI adjuster, by PWM controller, output signal and break-make control is carried out to T1, T2.When wind power output power is greater than given power, bank of super capacitors is charged, two-way DC/DC converter is operated in buck circuit pattern, when wind power output power is not enough, when being less than the given power of system, bank of super capacitors is discharged, and two-way DC/DC converter is operated in boost chopper pattern.
A kind of ultracapacitor stabilizes wind-powered electricity generation micro-capacitance sensor voltage fluctuation system, and this system is made up of wind power generation unit, Electric capacity compensation device, bank of super capacitors, two-way DC/DC converter, voltage source inverter and filter circuit; This system comprises the two-way DC/DC converter of buck, bank of super capacitors energy-storage units is connected with DC bus, T1, T2 are full-controlled switch device, D1, D2 are antiparallel fly-wheel diode, controlled by PWM, change the duty ratio of T1, T2 switching tube, thus realize the charge and discharge control of ultracapacitor.
This system is carried and is carried out current transformer control by converter voltage outer shroud and current inner loop double-loop control strategy, reference voltage V
refwith converter output voltage V
dCcompare, send into voltage PI regulator, obtain high voltage side current control signal I
hV, this signal, through the process of signal operation mechanism, obtains reference current signal I
ref, and ultracapacitor measured current signal I
dCcompare, send into current PI adjuster, by PWM controller, output signal and break-make control is carried out to T1, T2.
System gives the control mode that bank of super capacitors carries out Power Exchange, when wind power output power is greater than given power, bank of super capacitors is charged, two-way DC/DC converter is operated in buck circuit pattern, when wind power output power is not enough, when being less than the given power of system, bank of super capacitors is discharged, and two-way DC/DC converter is operated in boost chopper pattern.
See Fig. 1, present system provides the system construction drawing that an application ultracapacitor stabilizes the voltage fluctuation of wind-powered electricity generation micro-capacitance sensor, this system is made up of wind power generation unit, Electric capacity compensation device, bank of super capacitors, two-way DC/DC converter, voltage source inverter and filter circuit.
See Fig. 2, present system provides the two-way DC/DC transformer configuration figure of buck, realize ultracapacitor energy storage unit to be connected with DC bus, T1, T2 are full-controlled switch device, can adopt IGBT, D1, D2 are antiparallel fly-wheel diode, are controlled by PWM, change the duty ratio of T1, T2 switching tube, thus realize the charge and discharge control of ultracapacitor.
See Fig. 3, present system provides DC/DC convertor controls policy construction figure, carry out current transformer control by converter voltage outer shroud and current inner loop double-loop control strategy, reference voltage V
refwith converter output voltage V
dCcompare, send into voltage PI regulator, obtain high voltage side current control signal I
hV, this signal, through the process of signal operation mechanism, obtains reference current signal I
ref, and ultracapacitor measured current signal I
dCcompare, send into current PI adjuster, by PWM controller, output signal and break-make control is carried out to T1, T2.In system, according to system, pi regulator will carry out that ratio and integral parameter are selected, associated voltage and current signal can be obtained by checkout gear.
Above content is the detailed description done the present invention in conjunction with optimal technical scheme, can not assert that the concrete enforcement of invention is only limitted to these, for not departing from the simple deduction and replacement made under inventive concept prerequisite, all should be considered as protection scope of the present invention.
Claims (3)
1. ultracapacitor stabilizes a wind-powered electricity generation micro-capacitance sensor voltage fluctuation system, it is characterized in that: this system is made up of wind power generation unit, Electric capacity compensation device, bank of super capacitors, two-way DC/DC converter, voltage source inverter and filter circuit; This system comprises the two-way DC/DC converter of buck, bank of super capacitors energy-storage units is connected with DC bus, T1, T2 are full-controlled switch device, D1, D2 are antiparallel fly-wheel diode, controlled by PWM, change the duty ratio of T1, T2 switching tube, thus realize the charge and discharge control of ultracapacitor.
2. ultracapacitor stabilizes a wind-powered electricity generation micro-capacitance sensor voltage fluctuation method, it is characterized in that: this system is carried and carried out current transformer control by converter voltage outer shroud and current inner loop double-loop control strategy, reference voltage V
refwith converter output voltage V
dCcompare, send into voltage PI regulator, obtain high voltage side current control signal I
hV, this signal, through the process of signal operation mechanism, obtains reference current signal I
ref, and ultracapacitor measured current signal I
dCcompare, send into current PI adjuster, by PWM controller, output signal and break-make control is carried out to T1, T2.
3. a kind of ultracapacitor according to claim 1 stabilizes wind-powered electricity generation micro-capacitance sensor voltage fluctuation method, it is characterized in that: system gives the control mode that bank of super capacitors carries out Power Exchange, when wind power output power is greater than given power, bank of super capacitors is charged, two-way DC/DC converter is operated in buck circuit pattern, when wind power output power is not enough, when being less than the given power of system, bank of super capacitors is discharged, and two-way DC/DC converter is operated in boost chopper pattern.
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| CN201510598999.9A CN105098786A (en) | 2015-09-18 | 2015-09-18 | System and method for stabilizing voltage fluctuation of wind power micro-grid employing super capacitors |
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| CN201510598999.9A CN105098786A (en) | 2015-09-18 | 2015-09-18 | System and method for stabilizing voltage fluctuation of wind power micro-grid employing super capacitors |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680438A (en) * | 2016-02-29 | 2016-06-15 | 杰华特微电子（张家港）有限公司 | Power supply circuit and system and method thereof |
| CN106410932A (en) * | 2016-10-12 | 2017-02-15 | 许继电源有限公司 | Chained battery energy storage converter suitable for medium-voltage DC power distribution network and control method |
| CN107332273A (en) * | 2017-07-17 | 2017-11-07 | 国家电网公司 | A kind of extensive new energy access power grid cascading trouble-saving control device and method |
| CN107394813A (en) * | 2017-07-17 | 2017-11-24 | 国家电网公司 | A kind of wind-electricity integration cooperative control device and method based on energy-storage system |
| CN109861534A (en) * | 2019-03-13 | 2019-06-07 | 广州供电局有限公司 | Compensation device temporarily drops in DC voltage and compensation method temporarily drops in DC voltage |
| CN109861533A (en) * | 2019-03-13 | 2019-06-07 | 广州供电局有限公司 | Compensator temporarily drops in DC voltage |
| CN110011341A (en) * | 2019-03-13 | 2019-07-12 | 广州供电局有限公司 | Controlling device and method temporarily drop in DC voltage |
| CN110995017A (en) * | 2019-12-27 | 2020-04-10 | 散裂中子源科学中心 | High-voltage resonant network energy fluctuation control circuit and control method |
| CN116545261A (en) * | 2023-07-07 | 2023-08-04 | 深圳市鸿嘉利新能源有限公司 | DC converter for micro-grid, control method and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877488A (en) * | 2010-07-13 | 2010-11-03 | 东北电力大学 | Device for realizing low voltage ride-through capability of wind turbine generator system |
| CN102780229A (en) * | 2012-04-25 | 2012-11-14 | 北车风电有限公司 | Wind turbine power control system applying super capacitor |
| CN203850848U (en) * | 2014-05-30 | 2014-09-24 | 国家电网公司 | Supercapacitor-based grid-connected wind farm centralized energy-storage equipment |
| CN104184149A (en) * | 2014-08-21 | 2014-12-03 | 上海电力学院 | Voltage fluctuation stabilizing method based on sliding mode control and super-capacitor |
-
2015
- 2015-09-18 CN CN201510598999.9A patent/CN105098786A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877488A (en) * | 2010-07-13 | 2010-11-03 | 东北电力大学 | Device for realizing low voltage ride-through capability of wind turbine generator system |
| CN102780229A (en) * | 2012-04-25 | 2012-11-14 | 北车风电有限公司 | Wind turbine power control system applying super capacitor |
| CN203850848U (en) * | 2014-05-30 | 2014-09-24 | 国家电网公司 | Supercapacitor-based grid-connected wind farm centralized energy-storage equipment |
| CN104184149A (en) * | 2014-08-21 | 2014-12-03 | 上海电力学院 | Voltage fluctuation stabilizing method based on sliding mode control and super-capacitor |
Non-Patent Citations (1)
| Title |
|---|
| 顾静鸣等: "超级电容增强双馈风电机组电网低电压耐受能力的研究", 《电器与能效管理技术》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680438A (en) * | 2016-02-29 | 2016-06-15 | 杰华特微电子（张家港）有限公司 | Power supply circuit and system and method thereof |
| CN106410932A (en) * | 2016-10-12 | 2017-02-15 | 许继电源有限公司 | Chained battery energy storage converter suitable for medium-voltage DC power distribution network and control method |
| CN106410932B (en) * | 2016-10-12 | 2018-11-16 | 许继电源有限公司 | Chain type battery energy storage current transformer and control method suitable for middle straightening stream power distribution network |
| CN107332273A (en) * | 2017-07-17 | 2017-11-07 | 国家电网公司 | A kind of extensive new energy access power grid cascading trouble-saving control device and method |
| CN107394813A (en) * | 2017-07-17 | 2017-11-24 | 国家电网公司 | A kind of wind-electricity integration cooperative control device and method based on energy-storage system |
| CN109861534A (en) * | 2019-03-13 | 2019-06-07 | 广州供电局有限公司 | Compensation device temporarily drops in DC voltage and compensation method temporarily drops in DC voltage |
| CN109861533A (en) * | 2019-03-13 | 2019-06-07 | 广州供电局有限公司 | Compensator temporarily drops in DC voltage |
| CN110011341A (en) * | 2019-03-13 | 2019-07-12 | 广州供电局有限公司 | Controlling device and method temporarily drop in DC voltage |
| CN110995017A (en) * | 2019-12-27 | 2020-04-10 | 散裂中子源科学中心 | High-voltage resonant network energy fluctuation control circuit and control method |
| CN116545261A (en) * | 2023-07-07 | 2023-08-04 | 深圳市鸿嘉利新能源有限公司 | DC converter for micro-grid, control method and storage medium |
| CN116545261B (en) * | 2023-07-07 | 2023-11-24 | 深圳市鸿嘉利新能源有限公司 | DC converter for micro-grid, control method and storage medium |
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Application publication date: 20151125 |
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