CN112865129B - Static phase modifier - Google Patents
Static phase modifier Download PDFInfo
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- CN112865129B CN112865129B CN202110387116.5A CN202110387116A CN112865129B CN 112865129 B CN112865129 B CN 112865129B CN 202110387116 A CN202110387116 A CN 202110387116A CN 112865129 B CN112865129 B CN 112865129B
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- stator
- static phase
- alternating current
- phase
- phase modulator
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- 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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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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
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention provides a static phase modulator. In the invention, the static phase modifier refers to that the rotor of the phase modifier is replaced by the stator, so that the static phase modifier becomes a novel double-stator motor which is a non-rotor motor. The static phase modulator provided by the invention is separated from a synchronous or asynchronous running state, and also separated from all losses generated by rotation, so that the static phase modulator has a unique effect in some extra-high voltage alternating current and alternating current/direct current transmission networks. The static phase modulator provided by the invention has no rotating part, can be separated from starting equipment, can be quickly started and independently connected with the grid, so that the structural design is more flexible, the selectable parameters are wider in performance optimization, the installation and maintenance are simpler and more convenient, the static phase modulator is safer in actual operation, and the economic benefit is more considerable.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to the technical field of phase modulators.
Background
Along with the phenomena of high-proportion power electronics and high-proportion new energy grid connection, china pays more and more attention to the promotion of extra-high voltage engineering. As an important part of national strategy, the extra-high voltage engineering has important responsibility for promoting the development of the power industry and equipment manufacturing in China and guaranteeing the power supply and the national energy safety in China, and has the advantages of promoting large-scale and long-distance transportation and efficient and safe use of new energy and the like. However, although the extra-high voltage transmission has the advantages of large transmission capacity, long distance, low loss, high economic benefit and the like, the requirements on the existing equipment are much higher. In an extra-high voltage alternating current system, a direct current system and an alternating current-direct current system, along with the improvement of voltage grades, the volume and the weight of some equipment and the performance of some insulating materials are increased in a certain proportion, and the improvement of the weight of the motor enables the motor to consume energy in the same proportion in the processes of starting, braking and working mode switching. Compared with the traditional high-capacity synchronous phase modifier, the novel motor is separated from starting equipment and a starting process, and can greatly reduce loss caused by the rotation of a rotor and the operation of the starting equipment. The invention aims to further reduce the related loss of the extra-high voltage power transmission system.
Disclosure of Invention
The invention provides a static phase modulator, which mainly aims to reduce loss generated by rotation of a rotor during operation and maximally enhance the reactive power regulation characteristic of the phase modulator in an extra-high voltage transmission system. The method mainly has the following characteristics:
in the design of the static phase modifier structure, the rotor is considered to be removed, or the rotating speed of the rotor is regulated to be 0 and is kept unchanged, so that the static phase modifier is removed from parts such as a rotating shaft, an electric brush and the like, and the static phase modifier is also separated from starting equipment and a starting process, so that the response capability and the economic benefit of the static phase modifier are enhanced, and the loss caused by self rotation and the related starting process is greatly reduced;
in general, a static phase modulator has a double-stator structure and no rotor;
meanwhile, the structure of the motor is a traditional structure or a linear structure or any other structure which can meet the performance of the phase modulator, but no rotating part exists, and no starting equipment is attached;
in some specific structures, one stator of the double stators is used as a traditional stator, fixed and unchangeable three-phase alternating current is input to generate a rotating magnetic field, the stator evolved by the rotor is used as an excitation stator, and three-phase alternating current with the same frequency as the stator is input;
the above-mentioned three-phase alternating current in the excitation stator and the three-phase alternating current in the conventional stator are modified according to the structure of different static phase modulators in order to satisfy the optimization of the motor performance, and the phase difference between the two three-phase alternating currents in the same motor is generally unchanged.
Drawings
Fig. 1 is a conceptual diagram of a linear structure of a stationary phase modulator according to the present invention.
Wherein, 1 is traditional stator, 2 is excitation stator, 3 is the groove of traditional stator, 4 is the groove of excitation stator, 5 is motor housing.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Fig. 1 shows a conceptual diagram of a linear structure of a stationary phase modulator, which is only one of the structures mentioned in the present invention. The input of the traditional stator 1 is fixed and unchangeable three-phase alternating current, a rotating magnetic field is generated at the same time, the excitation stator is used as the key of the static phase modulator, the input is the same-frequency three-phase alternating current which has a certain phase difference with the traditional stator, the slots 3 of the traditional stator and the slots 4 of the excitation stator can be calculated, optimized and adjusted according to expected performance parameters, and the motor shell 5 can be changed according to the specific structure of the motor, so that the motor is simple and convenient.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (3)
1. A static phase modulator is characterized in that the structure is a double-stator structure without a rotor;
one stator of the double stators is used as a traditional stator, fixed and unchangeable three-phase alternating current is input to generate a rotating magnetic field, the stator evolved by the rotor is used as an excitation stator, and three-phase alternating current with the same frequency as the stator is input;
the corresponding phase of the three-phase alternating current in the excitation stator and the three-phase alternating current in the traditional stator needs to be modified according to the structures of different static phase modulators, and the phase difference of the same motor is not changed.
2. A static phase modifier as claimed in claim 1 which is capable of being disconnected from the starting apparatus and of being quickly and independently operated in a grid-tie.
3. The stationary phase modulator of claim 1 wherein the motor structure is a conventional structure or a linear structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387116.5A CN112865129B (en) | 2021-04-08 | 2021-04-08 | Static phase modifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387116.5A CN112865129B (en) | 2021-04-08 | 2021-04-08 | Static phase modifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112865129A CN112865129A (en) | 2021-05-28 |
| CN112865129B true CN112865129B (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110387116.5A Active CN112865129B (en) | 2021-04-08 | 2021-04-08 | Static phase modifier |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109962479A (en) * | 2019-03-28 | 2019-07-02 | 国网山东省电力公司电力科学研究院 | A kind of synchronous capacitor electric parameter distribution joint discrimination method based on alternating iteration optimization |
| CN110212671A (en) * | 2019-05-22 | 2019-09-06 | 湖北研道特磁科技有限公司 | A kind of super-pressure phase modifier system applied in ultra-high voltage converter station |
| CN111835018A (en) * | 2020-04-30 | 2020-10-27 | 南京理工大学 | Synchronous phase modulator starting grid-connected circuit based on time sequence hybrid excitation control and control method |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1173584B (en) * | 1962-06-14 | 1964-07-09 | Licentia Gmbh | Phase shifter |
| GB1159583A (en) * | 1965-10-05 | 1969-07-30 | Central Electr Generat Board | Improvements in or relating to the Control of Electrical Machines |
| SE513083C2 (en) * | 1997-09-30 | 2000-07-03 | Abb Ab | Synchronous compensator system and the use of such and phase compensation method in a high voltage field |
| CN100377478C (en) * | 2004-07-14 | 2008-03-26 | 华中科技大学 | Energy-storing phase modulation motor |
| CN202153699U (en) * | 2011-08-11 | 2012-02-29 | 浙江雷润机电科技有限公司 | Self-starting permanent magnetic outer rotor type three phase synchronous motor |
| CN104701860A (en) * | 2013-12-06 | 2015-06-10 | 广西大学 | Novel reactive voltage-regulating optimizing device of asynchronous motor |
| CN106026122B (en) * | 2016-06-24 | 2018-11-02 | 河海大学 | A kind of method that asynchronous excitation integrates phase modifier and its reactive-load compensation and active balance |
| CN107240930A (en) * | 2017-06-18 | 2017-10-10 | 长沙无道工业设计有限公司 | One kind is based on double-fed type wind generator system |
| CN107947186B (en) * | 2017-11-23 | 2021-06-18 | 国网江苏省电力有限公司检修分公司 | Starting control method for accessing high-voltage direct-current transmission inversion side to synchronous phase modulator |
| CN108306309A (en) * | 2018-03-28 | 2018-07-20 | 上海电气电站设备有限公司 | The remodeling method and synchronous capacitor group of turbine power generation unit |
| CN108539755B (en) * | 2018-04-19 | 2020-01-17 | 国网湖北省电力有限公司电力科学研究院 | Large synchronous phase modulator starting method based on VVSG technology |
| CN109301883B (en) * | 2018-10-30 | 2021-09-17 | 河海大学 | Double-stator synchronous phase modulator with energy stored in rotor and control method thereof |
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2021
- 2021-04-08 CN CN202110387116.5A patent/CN112865129B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109962479A (en) * | 2019-03-28 | 2019-07-02 | 国网山东省电力公司电力科学研究院 | A kind of synchronous capacitor electric parameter distribution joint discrimination method based on alternating iteration optimization |
| CN110212671A (en) * | 2019-05-22 | 2019-09-06 | 湖北研道特磁科技有限公司 | A kind of super-pressure phase modifier system applied in ultra-high voltage converter station |
| CN111835018A (en) * | 2020-04-30 | 2020-10-27 | 南京理工大学 | Synchronous phase modulator starting grid-connected circuit based on time sequence hybrid excitation control and control method |
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| CN112865129A (en) | 2021-05-28 |
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