CN203119751U - Third triple tuned AC filter - Google Patents
Third triple tuned AC filter Download PDFInfo
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- CN203119751U CN203119751U CN 201320089960 CN201320089960U CN203119751U CN 203119751 U CN203119751 U CN 203119751U CN 201320089960 CN201320089960 CN 201320089960 CN 201320089960 U CN201320089960 U CN 201320089960U CN 203119751 U CN203119751 U CN 203119751U
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- 239000003990 capacitor Substances 0.000 claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 description 16
- 238000001914 filtration Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
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- 238000011217 control strategy Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
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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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Abstract
The utility model relates to a triple tuned AC filter, which comprises three low-voltage capacitors C1, C2 and C3, three reactors L1-Ztr, L2 and L3, two resistors R1 and R2, and a reactor surge arrester F1. The reactor L1-Ztr is a high-voltage reactor. The low-voltage capacitor C2, the reactor L2 and the resistor R1 are connected in parallel to form a first resonant circuit. The low-voltage capacitor C3, the reactor L3 and the resistor R2 are connected in parallel to form a second resonant circuit. The first resonant circuit, the second resonant circuit and the high-voltage reactor L1-Ztr are orderly connected in series and then are connected in parallel with the reactor surge arrester F1 to form a circuit loop. One end of the circuit loop is connected in series with the low-voltage capacitor C1. According to the technical scheme of the utility model, the third triple tuned AC filter can be adapted to a convertor station used for accessing an ultra high voltage DC into an ultra high voltage AC power grid. Due to the adoption of the third triple tuned AC filter, various harmonic waves generated by a current converter can be filtered, while harmonic waves generated by the system are controlled within an acceptable range at the same time. The reactive power required by the current converter is also provided. Therefore, the normal operation of both the AC system and the DC system can be ensured.
Description
Technical field
The utility model relates to a kind of extra-high voltage direct-current and inserts the alternating current filter that extra-high-voltage alternating current line commutation station is used, and particularly is combined the three tuning alternating current filters that filtering uses with transformer about a kind of in the ultra high voltage current conversion station.
Background technology
The alternating current filter that the tradition current conversion station is used all is directly parallel on the ac bus by minor group switches, realizes converter harmonic filtration and reactive balance, and the harmonic wave that injects AC network is controlled within standard-required, guarantees the quality of power supply of AC network.Because traditional DC transmission engineering current conversion station alternating-current field busbar voltage is up to 500kV, so normally is equipped with 500kV filter minor group switches on the engineering.
High speed development along with Chinese national economy and power grid construction, carry out extra-high voltage direct-current and insert the inexorable trend that extra-high-voltage alternating current is the big electrical network of construction: by utilizing high-power, the remote conveying capacity of AC extra high voltage rack, solution 500kV grid short circuit electric current exceeds standard, the problem of circuit corridor anxiety, simultaneously can also promote big power network safety operation level, promote power network safety operation.Current conversion station alternating-current field busbar voltage rises to 1000kV in the extra-high-voltage alternating current scheme because extra-high voltage direct-current directly inserts, and therefore adopts original filter complete set technology scheme, needs to be equipped with the filter minor group switches that is applicable to the 1000kV ac bus.But still do not have the filter minor group switches that satisfies this requirement in the market, if the filter minor group switches is carried out brand-new research and development design, can greatly increase the complete investment cost of filter.
Insert the complete investment cost of extra-high-voltage alternating current current conversion station filter for reducing extra-high voltage direct-current, guarantee that the whole investment cost of current conversion station is rationally feasible, can satisfy harmonic wave control and reactive power compensation requirement simultaneously again, the utility model intends proposing a kind of novel alternating current filter.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of three tuning alternating current filters, this filter can be used in combination with transformer in the ultra high voltage current conversion station, the various harmonic waves that the filtering converter produces, the control system harmonic wave is in tolerance interval simultaneously, and providing the converter commutation required reactive power, assurance exchanges, direct current system is normally moved.
For achieving the above object, the utility model is taked following technical scheme:
A kind of three tuning alternating current filters is characterized in that: it is by three secondary capacitor C1, C2, C3, three reactor L1-Ztr, L2, L3, and two resistor R1, R2 and a reactor lightning arrester F1 constitute; Wherein, described reactor L1-Ztr is high voltage reactor; Described secondary capacitor C2, reactor L2, resistor R1 formation in parallel first resonant tank, described secondary capacitor C3, reactor L3, resistor R2 formation in parallel second resonant tank; After described first, second resonant tank and high voltage reactor L1-Ztr connect successively again with described reactor lightning arrester F1 formation one circuit loop in parallel, an end of the described circuit loop described secondary capacitor C1 that connects.
The utility model is owing to take above technical scheme, and it has the following advantages:
1, the utility model and the series connection of current conversion station transformer are on ac bus, carry out whole switching as group's filter, can effectively reduce the usage quantity of filter minor group switches, solve extra-high voltage direct-current and directly inserted the high problem of current conversion station harmonic wave control investment cost behind the extra-high-voltage alternating current electrical network.
2, the utility model two ends reactive-load compensation capacitor in parallel can utilize the original switching control strategy of current conversion station, finishes harmonic filtration, realizes the compensation of current conversion station reactive balance, can effectively reduce the complete cost of investment of current conversion station alternating-current field filter.
The utility model is simple in structure, and control is convenient, can be widely used in ± 800kV/ ± the 1100kV extra-high voltage direct-current directly inserts in the 1000kV AC network scheme through conventional structure transformer.
Description of drawings
Fig. 1 is that the utility model inserts current conversion station ac bus schematic diagram;
Fig. 2 is built-up circuit schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As shown in Figure 1, the utility model three tuned filters are by three secondary capacitor C1, C2, C3, three reactor L1-Ztr, L2, L3, and two resistor R1, R2 and a reactor lightning arrester F1 constitute.
Wherein, reactor L1-Ztr is high voltage reactor; Secondary capacitor C2, reactor L2, resistor R1 formation in parallel first resonant tank, secondary capacitor C3, reactor L3, resistor R2 formation in parallel second resonant tank; Formation one circuit loop in parallel with reactor lightning arrester F1 again after first, second resonant tank and the high voltage reactor L1-Ztr series connection, an end of this circuit loop secondary capacitor C1 that connects.
As shown in Figure 2, the utility model in use, two ends reactive-load compensation capacitor SC in parallel, and in the end of the secondary capacitor C1 current conversion station transformer Ztr (among the figure shown in the frame of broken lines) that is connected in series, the other end of transformer Ztr then is connected on the ac bus, thereby carries out whole switching with transformer Ztr as group's filter.
Concrete parameter of the present utility model can be selected in accordance with the following methods:
1) determines each harmonic number of times and the size that converter produces in the current conversion station.
2) parameter of Preliminary design three tuning alternating current filters.
3) optimize capacity and the short-circuit impedance that filter inserts converter, determine converter leakage reactance size.
4) build three tuning alternating current filter models, carry out system emulation in conjunction with transformer and calculate, guarantee that the AC system harmonic wave of current conversion station is in tolerance interval.
5) be optimized according to the parameter of simulation result to three tuning alternating current filters.
6) three tuning alternating current filters after will optimizing are brought in the system model again and are adjusted.
7) do not have the distribution of work and compensation principle according to system, determine the capacity of the reactive-load compensation capacitor in parallel with three tuning alternating current filters.
8) according to three tuning alternating current filter parameters after optimizing, determine the stress of each element in it.
The various embodiments described above only are used for explanation the utility model; wherein the structure of each parts, connected mode etc. all can change to some extent; every equivalents and improvement of carrying out on the basis of technical solutions of the utility model all should do not got rid of outside protection range of the present utility model.
Claims (1)
1. tuning alternating current filter is characterized in that: it is by three secondary capacitor C1, C2, C3, three reactor L1-Ztr, L2, L3, and two resistor R1, R2 and a reactor lightning arrester F1 constitute; Wherein, described reactor L1-Ztr is high voltage reactor; Described secondary capacitor C2, reactor L2, resistor R1 formation in parallel first resonant tank, described secondary capacitor C3, reactor L3, resistor R2 formation in parallel second resonant tank; After described first, second resonant tank and high voltage reactor L1-Ztr connect successively again with described reactor lightning arrester F1 formation one circuit loop in parallel, an end of the described circuit loop described secondary capacitor C1 that connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320089960 CN203119751U (en) | 2013-02-27 | 2013-02-27 | Third triple tuned AC filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320089960 CN203119751U (en) | 2013-02-27 | 2013-02-27 | Third triple tuned AC filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203119751U true CN203119751U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320089960 Expired - Lifetime CN203119751U (en) | 2013-02-27 | 2013-02-27 | Third triple tuned AC filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN203119751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490733A (en) * | 2018-12-07 | 2019-03-19 | 北京华天机电研究所有限公司 | A kind of high pressure low-pass filter and its design method |
-
2013
- 2013-02-27 CN CN 201320089960 patent/CN203119751U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490733A (en) * | 2018-12-07 | 2019-03-19 | 北京华天机电研究所有限公司 | A kind of high pressure low-pass filter and its design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: STATE GRID ECONOMIC AND TECHNOLOGICAL RESEARCH INSTITUTE Co.,Ltd. Patentee after: State Grid Corporation of China Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: State Power Economic Research Institute Patentee before: State Grid Corporation of China |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180104 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: STATE GRID ZHEJIANG ELECTRIC POWER Co.,Ltd. Patentee after: State Grid Corporation of China Co-patentee after: STATE GRID ECONOMIC AND TECHNOLOGICAL RESEARCH INSTITUTE Co.,Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: STATE GRID ECONOMIC AND TECHNOLOGICAL RESEARCH INSTITUTE Co.,Ltd. Patentee before: State Grid Corporation of China |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |