CN111130139A - Low-high voltage cascading failure ride-through control method for double-fed wind generating set - Google Patents
Low-high voltage cascading failure ride-through control method for double-fed wind generating set Download PDFInfo
- Publication number
- CN111130139A CN111130139A CN202010009002.2A CN202010009002A CN111130139A CN 111130139 A CN111130139 A CN 111130139A CN 202010009002 A CN202010009002 A CN 202010009002A CN 111130139 A CN111130139 A CN 111130139A
- Authority
- CN
- China
- Prior art keywords
- voltage
- low
- high voltage
- grid
- power grid
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000008859 change Effects 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 12
- 238000011217 control strategy Methods 0.000 claims description 11
- 230000001052 transient effect Effects 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 claims description 2
- 238000010248 power generation Methods 0.000 abstract description 4
- 238000011897 real-time detection Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/12—Circuit arrangements for AC mains or AC distribution networks for adjusting voltage in AC networks by changing a characteristic of the network load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/102—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for limiting effects of transients
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/105—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for increasing the stability
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
本发明涉及一种双馈型风力发电机组低高压连锁故障穿越控制方法，属于风力发电技术领域。本发明针对电网低高电压连锁故障这种特殊情况，通过实时检测电网电压，通过SOGI锁相环快速准确的得出电网电压正序矢量标幺值，并结合低穿结束标志信号，快速判断低高压连锁故障的发生；电网发生低高压连锁故障时，同步进行网侧变流器、Chopper电路、转子侧变流器三者相配合共同作用的协调控制，有效提高了双馈风力发电机组在电网发生低高电压连锁故障时风机不脱网运行的可靠性，并保证故障穿越期间，变流器持续的有功输出；根据电网低高压突变幅度，确定脉冲封锁的时间，简单高效地提高系统低高压连锁故障的穿越能力。
The invention relates to a low-voltage cascading fault ride-through control method for a doubly-fed wind power generating set, and belongs to the technical field of wind power generation. Aiming at the special case of low-voltage and high-voltage cascading faults in the power grid, the invention can quickly and accurately obtain the per-unit value of the positive-sequence vector of the power grid voltage through real-time detection of the power grid voltage through the SOGI phase-locked loop, and combined with the low-penetration end sign signal to quickly determine the low voltage The occurrence of high-voltage cascading faults; when low-voltage cascading faults occur in the power grid, the coordinated control of the grid-side converter, the chopper circuit, and the rotor-side converter is performed synchronously, which effectively improves the grid-side converter, the chopper circuit, and the rotor-side converter. When low and high voltage cascading faults occur, the reliability of the fan’s operation without being disconnected from the grid is ensured, and the continuous active power output of the converter is guaranteed during the fault ride-through period. The ability to travel through cascading failures.
Description
Technical Field
The invention relates to a low-high voltage cascading failure ride-through control method for a double-fed wind generating set, and belongs to the technical field of wind power generation.
Background
The proportion of wind power generation in energy structures in China is increasing day by day, and in order to ensure the stability of an electric power system, a national power grid company puts forward higher requirements on the non-grid-disconnection stable operation of a wind power generator set under the condition of grid voltage faults, and sets up related technical standards. The double-fed wind generating set is a wind generating set which is widely applied to the current wind field, and is the most sensitive to the grid fault.
According to the national standard of wind turbine generator grid connection, the wind turbine generator has low voltage ride through capability and high voltage ride through capability under the condition of grid faults. At present, the requirements of a power grid for low-voltage ride-through capability and high-voltage ride-through capability of a wind generating set are made based on sudden voltage drop or sudden voltage rise of the power grid under the condition of a normal power grid. Aiming at the special condition that a power grid is linked with a high-voltage fault after a low-voltage fault or linked with a low-voltage fault after a high-voltage fault, although no mandatory requirement is made in a wind turbine generator grid-connection standard, the power grid-connection standard is listed in a test specification as a selectable test item. When the power grid is in a low-high voltage cascading failure, the transient process of the system is more unstable, and the failure condition is worse. The traditional high voltage ride through control strategy may cause the failure of the wind turbine generator. The traditional high-voltage ride-through control strategy is suitable for the grid fault that the grid voltage is suddenly increased from a rated Pu value to a voltage value between 1.1Pu and 1.3Pu, and the maximum sudden change of the grid voltage is 0.3 Pu. However, when the low-voltage linkage high-voltage fault occurs, the grid voltage suddenly rises from 0.2Pu to 0.9Pu to 1.1Pu to 1.3Pu, the maximum sudden change of the grid voltage is 1.1Pu, and the grid fault condition is worse. Obviously, the traditional high voltage ride through control strategy is not suitable for the special case of cascading high voltage faults after the low voltage faults of the power grid. If the traditional high-voltage ride-through control strategy is still adopted when the grid voltage is low and the voltage is linked to the high voltage, the off-grid shutdown of the doubly-fed wind turbine generator is easily caused, and the low and high voltage linked fault ride-through of the grid cannot be completed.
Disclosure of Invention
The invention aims to solve the technical problem of a low-high voltage cascading failure ride-through control strategy of a wind generating set.
In order to solve the above problems, the technical scheme adopted by the invention is to provide a low-high voltage cascading failure ride-through control method for a doubly-fed wind generating set, which comprises the following steps:
step 1: detecting the voltage of the power grid in real time, and obtaining a per unit value Ug of a positive sequence vector of the voltage of the power grid through a second-order generalized integrator SOGI phase-locked loop+；
Step 2: judging the power grid voltage positive sequence vector per unit value Ug+Whether greater than 1.1 pu;
and step 3: if Ug+If the voltage is larger than 1.1pu, simultaneously detecting whether the LVRT _ End is 1, and if the voltage is 1, entering a low-high voltage cascading failure ride-through mode; wherein, LVRT _ End is a low voltage ride through End mark signal, the mark is set to 1 when the low voltage ride through is finished, and is maintained to be clear 0 for a period of time for judging the low and high voltage cascading failure;
and 4, step 4: after entering a low-high voltage cascading failure traversing mode, synchronously performing coordination control of the cooperation and combined action of a network side converter, a direct current unloading Chopper circuit and a rotor side converter, spending a transient process of voltage transition during low-high voltage cascading failure, simultaneously restraining rotor overcurrent, preventing the input of a Crowbar circuit at the rotor side, and ensuring the continuous active power output of the converter during the fault traversing;
a. blocking the grid-side converter pulse immediately, and starting timing by a pulse blocking timer; the system fault shutdown caused by overlarge transient impact current of the grid-side converter due to large voltage mutation amplitude and violent transition process of the low-high voltage cascading failure of the power grid and even the damage of hardware such as power devices and the like are avoided;
b. raising the threshold values of the upper limit and the lower limit of the operating voltage of the Chopper circuit to the parameter values corresponding to the low-high voltage cascading failures immediately; when the voltage of the direct-current bus is larger than the upper limit threshold value, the Chopper circuit is switched on to discharge, and when the voltage of the direct-current bus is smaller than the lower limit threshold value, the Chopper circuit is switched off to not discharge; the Chopper circuit releases energy which is injected into a direct current bus from a grid-side converter and a rotor-side converter in a voltage sudden change dynamic process, the fluctuation of the voltage of the direct current bus is controlled within a certain safety range, and support is provided for the stable operation of the converter;
c. the rotor-side converter adopts a single-current closed-loop control strategy, and an active current given value is directly calculated according to an active power instruction value of a master control system of the wind turbine generator set, so that the active output of the wind turbine generator set is guaranteed; the given reactive current value is directly given according to the high voltage ride through standard of the wind turbine generator;
and 5: calculating the low and high voltage sudden change amplitude of the power grid, and determining the time of grid side pulse locking according to the difference of the low and high voltage sudden change amplitudes; the general principle is that the larger the sudden change amplitude is, the longer the blocking time is, and the blocking time is generally less than 4 power grid periods, so that the recovery of the transient process of the system is facilitated; meanwhile, the convenience and operability in practical application are considered;
step 6: detecting that the pulse blocking timing time is up, unlocking the network side pulse, and lifting a direct-current bus voltage set value according to the power grid voltage value after the voltage suddenly rises;
and 7: detecting the power grid voltage at the same time during the low-high voltage cascading failure ride-through period, and judging the power grid voltage positive sequence vector per unit value Ug+Whether less than 1.05 pu;
and 8: if Ug+And if the voltage is less than 1.05pu, the low-high voltage cascading failure ride-through is finished, the double closed-loop control strategy of the rotor-side converter is recovered, the upper and lower limit threshold values of the Chopper circuit are recovered, and the voltage set value of the direct-current bus is recovered.
Preferably, the time of mesh-side pulse latching is determined in step 5, and the latching time t can be determined by using the following formula:
The invention provides an effective control method aiming at the special condition of low-high voltage cascading failure of a power grid, effectively improves the reliability of the doubly-fed wind generating set that a fan does not break off the grid when the low-high voltage cascading failure occurs in the power grid, and ensures the continuous active output of a converter during the fault ride-through period.
Compared with the prior art, the invention has the following beneficial effects:
according to the method, the grid voltage is detected in real time, the per unit value of the grid voltage positive sequence vector is rapidly and accurately obtained through the SOGI phase-locked loop, and the occurrence of the low-voltage and high-voltage cascading failure can be rapidly judged by combining a low-voltage-through end marking signal; when a low-voltage and high-voltage cascading failure occurs in a power grid, coordinated control of cooperation and combined action of the grid-side converter, the Chopper circuit and the rotor-side converter is synchronously performed, so that the reliability of non-grid-disconnection operation of a fan when the low-voltage and high-voltage cascading failure occurs in the power grid of the double-fed wind generating set is effectively improved, and the continuous active power output of the converter is ensured during the fault ride-through period; according to the low-high voltage sudden change amplitude of the power grid, the pulse blocking time is determined, and the ride-through capability of the low-high voltage cascading failure of the system is simply and efficiently improved.
Drawings
FIG. 1 is a flow chart of a low-high voltage cascading failure ride-through control method of a double-fed wind generating set according to the invention;
FIG. 2 is a schematic structural diagram of a double-fed wind power generation system of the present invention;
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:
as shown in fig. 1 and 2, the invention provides a low-high voltage cascading failure ride-through control method for a double-fed wind generating set;
the method comprises the following steps:
step 1: detecting the voltage of the power grid in real time, and obtaining a per unit value Ug of the positive sequence vector of the voltage of the power grid through the SOGI phase-locked loop+；
Step 2: judging the power grid voltage positive sequence vector per unit value Ug+Whether greater than 1.1 pu;
and step 3: if Ug+And if the LVRT _ End is larger than 1.1pu, simultaneously detecting whether the LVRT _ End is 1, and if the LVRT _ End is 1, entering a low-high voltage cascading failure ride-through mode.
The LVRT _ End is a low voltage ride through End mark signal, the mark is set to be 1 when the low voltage ride through is ended, and the clear 0 is maintained for a period of time for judging the low and high voltage cascading failure.
And 4, step 4: after entering a low-high voltage cascading failure traversing mode, the coordination control of the cooperation and combined action of the grid-side converter, the direct-current unloading Chopper circuit and the rotor-side converter is synchronously carried out, the transient process of voltage transition during low-high voltage cascading failure is used, the rotor overcurrent is restrained, the input of a Crowbar circuit on the rotor side is prevented, and the continuous active power output of the converter during the fault traversing is ensured.
a. The grid side converter pulses are immediately blocked, and simultaneously the pulse blocking timer starts to time. The system fault shutdown caused by overlarge transient impact current of the grid-side converter due to large voltage mutation amplitude and violent transition process of the low-high voltage cascading failure of the power grid and even the damage of hardware such as power devices and the like are avoided;
b. and immediately raising the threshold value of the upper limit and the lower limit of the operating voltage of the Chopper circuit to the parameter value corresponding to the low-high voltage cascading failure. When the voltage of the direct current bus is larger than the upper limit threshold value, the Chopper circuit is switched on to discharge, and when the voltage of the direct current bus is smaller than the lower limit threshold value, the Chopper circuit is switched off to not discharge. The Chopper circuit releases energy which is injected into a direct current bus from a grid-side converter and a rotor-side converter in a voltage sudden change dynamic process, the fluctuation of the voltage of the direct current bus is controlled within a certain safety range, and support is provided for the stable operation of the converter;
c. the rotor-side converter adopts a single-current closed-loop control strategy, and an active current given value is directly calculated according to an active power instruction value of a master control system of the wind turbine generator set, so that the active output of the wind turbine generator set is guaranteed; the given reactive current value is directly given according to the high voltage ride through standard of the wind turbine generator. The dynamic response performance of the system is greatly improved, the instability of the rotor current transient process is further restrained, and the recovery of the grid voltage is supported.
And 5: and calculating the low and high voltage sudden change amplitude of the power grid, and determining the time of the grid side pulse locking according to the difference of the low and high voltage sudden change amplitudes. The general principle is that the blocking time is longer when the sudden change amplitude is larger, and the blocking time is generally less than 4 grid periods so as to facilitate the recovery of the transient process of the system. Considering both the convenience and operability in practical applications, the latch-up time t can be determined using the following equation:
Step 6: and when the pulse blocking timing time is up, unlocking the network side pulse, and lifting the voltage set value of the direct current bus according to the voltage value of the power network after the voltage suddenly rises.
And 7: detecting the power grid voltage at the same time during the low-high voltage cascading failure ride-through period, and judging the power grid voltage positive sequence vector per unit value Ug+Whether or not less than 1.05 pu.
And 8: if Ug+And if the voltage is less than 1.05pu, the low-high voltage cascading failure ride-through is finished, the double closed-loop control strategy of the rotor-side converter is recovered, the upper and lower limit threshold values of the Chopper circuit are recovered, and the voltage set value of the direct-current bus is recovered.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (2)
1. A double-fed wind generating set low-high voltage cascading failure ride-through control method is characterized by comprising the following steps:
step 1: detecting the voltage of the power grid in real time, and obtaining a per unit value Ug of a positive sequence vector of the voltage of the power grid through a second-order generalized integrator SOGI phase-locked loop+；
Step 2: judging the power grid voltage positive sequence vector per unit value Ug+Whether greater than 1.1 pu;
and step 3: if Ug+If the voltage is larger than 1.1pu, simultaneously detecting whether the LVRT _ End is 1, and if the voltage is 1, entering a low-high voltage cascading failure ride-through mode; wherein, LVRT _ End is a low voltage ride through End mark signal, the mark is set to 1 when the low voltage ride through is finished, and is maintained to be clear 0 for a period of time for judging the low and high voltage cascading failure;
and 4, step 4: after entering a low-high voltage cascading failure traversing mode, synchronously performing coordination control of the cooperation and combined action of a network side converter, a direct current unloading Chopper circuit and a rotor side converter, spending a transient process of voltage transition during low-high voltage cascading failure, simultaneously restraining rotor overcurrent, preventing the input of a Crowbar circuit at the rotor side, and ensuring the continuous active power output of the converter during the fault traversing;
a. blocking the grid-side converter pulse immediately, and starting timing by a pulse blocking timer;
b. raising the threshold values of the upper limit and the lower limit of the operating voltage of the Chopper circuit to the parameter values corresponding to the low-high voltage cascading failures immediately; when the voltage of the direct-current bus is larger than the upper limit threshold value, the Chopper circuit is switched on to discharge, and when the voltage of the direct-current bus is smaller than the lower limit threshold value, the Chopper circuit is switched off to not discharge; the Chopper circuit releases energy which is injected into a direct current bus from a grid-side converter and a rotor-side converter in a voltage sudden change dynamic process, the fluctuation of the voltage of the direct current bus is controlled within a certain safety range, and support is provided for the stable operation of the converter;
c. the rotor-side converter adopts a single-current closed-loop control strategy, and an active current given value is directly calculated according to an active power instruction value of a master control system of the wind turbine generator set, so that the active output of the wind turbine generator set is guaranteed; the given reactive current value is directly given according to the high voltage ride through standard of the wind turbine generator;
and 5: calculating the low and high voltage sudden change amplitude of the power grid, and determining the time of grid side pulse locking according to the difference of the low and high voltage sudden change amplitudes;
step 6: detecting that the pulse blocking timing time is up, unlocking the network side pulse, and lifting a direct-current bus voltage set value according to the power grid voltage value after the voltage suddenly rises;
and 7: detecting the power grid voltage at the same time during the low-high voltage cascading failure ride-through period, and judging the power grid voltage positive sequence vector per unit value Ug+Whether less than 1.05 pu;
and 8: if Ug+And if the voltage is less than 1.05pu, the low-high voltage cascading failure ride-through is finished, the double closed-loop control strategy of the rotor-side converter is recovered, the upper and lower limit threshold values of the Chopper circuit are recovered, and the voltage set value of the direct-current bus is recovered.
2. The method for controlling the low-high voltage cascading failure ride-through of the doubly-fed wind generating set according to claim 1, wherein the method comprises the following steps: in the step 5, the time of the net side pulse latching is determined, and the latching time t can be determined by using the following formula:
wherein
For the per unit value of the positive sequence vector when the high voltage of the cascading failure power grid is stable,
the method is a per unit value of the positive sequence vector when the low voltage of the cascading failure power grid is stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010009002.2A CN111130139B (en) | 2020-01-06 | 2020-01-06 | A low-voltage cascading fault ride-through control method for doubly-fed wind turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010009002.2A CN111130139B (en) | 2020-01-06 | 2020-01-06 | A low-voltage cascading fault ride-through control method for doubly-fed wind turbines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111130139A true CN111130139A (en) | 2020-05-08 |
| CN111130139B CN111130139B (en) | 2021-06-08 |
Family
ID=70487132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010009002.2A Active CN111130139B (en) | 2020-01-06 | 2020-01-06 | A low-voltage cascading fault ride-through control method for doubly-fed wind turbines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111130139B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725839A (en) * | 2020-06-29 | 2020-09-29 | 南通大学 | A low-voltage fault ride-through control system for full-power wind turbines |
| CN112523875A (en) * | 2020-12-01 | 2021-03-19 | 广西玉柴机器股份有限公司 | Control method for override function of marine engine |
| CN113241791A (en) * | 2021-05-20 | 2021-08-10 | 国网江苏省电力有限公司经济技术研究院 | Off-grid judgment method for high-voltage fault of wind turbine generator |
| CN113765146A (en) * | 2021-11-09 | 2021-12-07 | 四川大学 | Double-fed induction fan fault ride-through system and method under direct-current commutation failure |
| CN113991734A (en) * | 2021-10-26 | 2022-01-28 | 中国华能集团清洁能源技术研究院有限公司 | A doubly-fed wind turbine control system and method with high voltage ride-through capability |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103227477A (en) * | 2013-03-27 | 2013-07-31 | 许继集团有限公司 | High voltage ride through control method for double-fed wind generator |
| CN104362667A (en) * | 2014-10-16 | 2015-02-18 | 中国人民解放军装甲兵工程学院 | Cooperative control method of high and low voltage ride-through for doubly-fed wind turbine set |
| EP3214719A1 (en) * | 2016-03-03 | 2017-09-06 | General Electric Company | System and method for controlling dc link voltage of a power converter for doubly-fed induction generators |
| CN109149640A (en) * | 2018-09-18 | 2019-01-04 | 四川大学 | Promote the processing method and system of double-fed fan motor unit cascading failure ride-through capability |
| CN109617125A (en) * | 2019-01-02 | 2019-04-12 | 上海交通大学 | High and low voltage ride-through system and method for doubly-fed wind turbine based on stator string impedance |
-
2020
- 2020-01-06 CN CN202010009002.2A patent/CN111130139B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103227477A (en) * | 2013-03-27 | 2013-07-31 | 许继集团有限公司 | High voltage ride through control method for double-fed wind generator |
| CN104362667A (en) * | 2014-10-16 | 2015-02-18 | 中国人民解放军装甲兵工程学院 | Cooperative control method of high and low voltage ride-through for doubly-fed wind turbine set |
| EP3214719A1 (en) * | 2016-03-03 | 2017-09-06 | General Electric Company | System and method for controlling dc link voltage of a power converter for doubly-fed induction generators |
| CN109149640A (en) * | 2018-09-18 | 2019-01-04 | 四川大学 | Promote the processing method and system of double-fed fan motor unit cascading failure ride-through capability |
| CN109617125A (en) * | 2019-01-02 | 2019-04-12 | 上海交通大学 | High and low voltage ride-through system and method for doubly-fed wind turbine based on stator string impedance |
Non-Patent Citations (2)
| Title |
|---|
| 徐海亮等: "考虑动态无功支持的双馈风电机组高电压穿越控制策略", 《中国电机工程学报》 * |
| 王思远: "MW级大型风力发电机组高压穿越技术研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111725839A (en) * | 2020-06-29 | 2020-09-29 | 南通大学 | A low-voltage fault ride-through control system for full-power wind turbines |
| CN112523875A (en) * | 2020-12-01 | 2021-03-19 | 广西玉柴机器股份有限公司 | Control method for override function of marine engine |
| CN112523875B (en) * | 2020-12-01 | 2022-08-12 | 广西玉柴机器股份有限公司 | Control method for override function of marine engine |
| CN113241791A (en) * | 2021-05-20 | 2021-08-10 | 国网江苏省电力有限公司经济技术研究院 | Off-grid judgment method for high-voltage fault of wind turbine generator |
| CN113241791B (en) * | 2021-05-20 | 2022-07-29 | 国网江苏省电力有限公司经济技术研究院 | An off-grid determination method for high-voltage faults of wind turbines |
| CN113991734A (en) * | 2021-10-26 | 2022-01-28 | 中国华能集团清洁能源技术研究院有限公司 | A doubly-fed wind turbine control system and method with high voltage ride-through capability |
| CN113991734B (en) * | 2021-10-26 | 2023-09-01 | 中国华能集团清洁能源技术研究院有限公司 | Doubly-fed wind turbine generator control system and method with high voltage ride through capability |
| CN113765146A (en) * | 2021-11-09 | 2021-12-07 | 四川大学 | Double-fed induction fan fault ride-through system and method under direct-current commutation failure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111130139B (en) | 2021-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111130139B (en) | A low-voltage cascading fault ride-through control method for doubly-fed wind turbines | |
| CN111146809B (en) | Grid-connected inverter transient stability control method based on improved phase-locked loop | |
| CN103326368B (en) | Double-fed fan motor unit dynamic reactive current direct control method during electric network fault | |
| CN104935006B (en) | A kind of high voltage crossing control method | |
| Rafiee et al. | Enhancement of the LVRT capability for DFIG-based wind farms based on short-circuit capacity | |
| CN111509765A (en) | A fault ride-through control strategy for a true bipolar flexible-straight island system in a unipolar blocking fault scenario | |
| CN110867895B (en) | A high-voltage ride-through control method for wind turbines | |
| CN105633999A (en) | High-voltage crossing control method and device under imbalanced sudden rise of power grid voltage | |
| CN111884256A (en) | High voltage ride through method and system for new energy unit | |
| CN108711883B (en) | Coordinated fault ride-through method for wind farms connected to the grid via flexible DC transmission | |
| Liu et al. | High voltage ride-through of grid-side converter for PMSG based directly driven wind turbines | |
| CN115133569A (en) | Fault ride-through method for permanent magnet direct-drive fan connected to grid via low-frequency power transmission | |
| CN105024402A (en) | High voltage ride-through method of doubly-fed wind turbine generator set | |
| CN106300415B (en) | A low-voltage ride-through method for combination of brushless doubly-fed wind turbines | |
| CN106300371B (en) | A low-voltage ride-through method for a wound brushless doubly-fed wind turbine | |
| Ouyang et al. | An improved control method of fault ride-through for DPMWT-based wind farm considering coupling effect of HVDC transmission system | |
| CN112232009B (en) | Method and device for calculating short-circuit current in the whole process of low-voltage ride-through of DFIG | |
| CN113991734A (en) | A doubly-fed wind turbine control system and method with high voltage ride-through capability | |
| Ding et al. | Low Voltage Ride Through of Doubly-fed Wind Farm Based on STATCOM with Fuzzy PI Control | |
| CN111969647A (en) | Converter transient instability stabilization control method and device based on state resetting | |
| CN113937817A (en) | Universal double-fed wind turbine generator low-voltage ride-through hierarchical control method | |
| CN117791480B (en) | New energy equivalent modeling method and system for asymmetric fault short circuit calculation | |
| CN113224795B (en) | Wind power grid-connected system transient stability control method based on automatic voltage regulation | |
| CN113162120B (en) | Wind power grid-connected system transient stability control method based on automatic virtual resistance compensation | |
| CN110571870A (en) | A new energy power generation unit power control method and system based on DC fault |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20241219 Address after: Room 3255, Zone A, 3rd Floor, Building 2, No. 715 Yingshun Road, Qingpu District, Shanghai, 2017 Patentee after: Shanghai Electric Group Transmission and Distribution Equipment Co.,Ltd. Country or region after: China Address before: 30F, No.8 Xingyi Road, Changning District, Shanghai 200050 Patentee before: Shanghai Electric Group Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |