CN202651795U - High-voltage dynamic reactive power compensator - Google Patents
High-voltage dynamic reactive power compensator Download PDFInfo
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- CN202651795U CN202651795U CN2012201481700U CN201220148170U CN202651795U CN 202651795 U CN202651795 U CN 202651795U CN 2012201481700 U CN2012201481700 U CN 2012201481700U CN 201220148170 U CN201220148170 U CN 201220148170U CN 202651795 U CN202651795 U CN 202651795U
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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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- 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
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model provides a high-voltage dynamic reactive power compensator, comprising a filter capacitor bank FC branch allowing grouping adjustment of the capacity and an adjustable reactor MCR branch, wherein the FC branch and the MCR branch are connected in parallel with a system compensation bus via respective isolating switches. The compensation bus is connected with a system high-voltage bus via an outgoing line of the compensator. In the utility model, the adjustable reactor with low capacity and the high-capacity filter capacitor bank allowing grouping adjustment of the capacity are integrated into one piece, not only satisfying the continuous, rapid and high-capacity reactive power compensation requirement of a system load, but also solving the harmonic pollution to the system from the compensator. The high-voltage dynamic reactive power compensator of the utility model is used to improve the power factor of an electric network, adjust the voltage, enable the harmonic suppression and reduce the transmission loss, improving the utilization rate of the electric network and guaranteeing safe and economical operation of the system.
Description
Technical field
The utility model belongs to a kind of Electrical Power System Dynamic reactive power compensator, especially a kind of dynamic reactive compensation device of realizing 3-35kV electric pressure distribution system of the sector applications such as electric power, metallurgy, petrochemical industry, building materials is specifically related to the adjustable reactor of a kind of saturation of magnetic path (MCR).
Background technology
At present, for satisfying the compensation needs in the idle rapid fluctuations place that specific load causes in the system, main compensation equipment is the capacitor group of classification switching and can realizes stepless adjustable state type reactive power compensator (Static Var Compensator is called for short SVC).The capacitor group of grade switching is arranged, and its compensation characteristic is unsmooth, and compensation precision is not high, can't adapt to the reactive power compensation demand that load changes occasion fast.The SVC product can address this problem effectively, and maturation and reliability height are used widely relatively with fast response time, technology for it.
The existing SVC product in domestic market mainly contains two kinds of forms: a kind of TCR(of being thyristor-controlled reactor) Controlled Reactor type SVC, a kind of is MCR type magnetic valve type controllable reactor type SVC.TCR type SVC occurs early, and traction is higher, has fast response time, the characteristics that noise is little, temperature rise is low; But the harmonic pollution that produces when having operation is serious, and reliability and stability are not high, and equipment is complicated, cost is high, the shortcoming that the operation maintenance workload is large, expense is high; In contrast to this, MCR type SVC is ripe product progressively over past ten years, adopt the thyristor control high voltage of the little electric current of low-voltage, the saturation of large power reactor, SVC compares with the TCR type, harmonic pollution when having operation is lighter, reliability and stability are higher, equipment is simple, volume is little, the characteristics that the operation maintenance workload is little, but owing to adopted the magnetic amplification principle, noise of equipment is larger, and temperature rise, response speed are slow than TCR, between 0.1-0.3S, still can satisfy the reactive power compensation demand of most of industrial and mineral occasion.
Existing MCR type SVC equipment, FC(filtering compensation branch road wherein) part is basic is the fixing capacitor group of switching, practical condition according to existing enterprise, rapid fluctuations load wherein is (such as arc furnace, rolling mill etc.) usually only account for the part that full factory loads, move simultaneously with the most load that changes stage by stage, therefore, if compensate the reactive requirement of all loads with MCR type SVC, exist utilization rate of equipment and installations low, the problem that cost performance is low, simultaneously, MCR type SVC in the course of the work also can the generating portion harmonic wave, needs fixing FC part that this is suppressed.
Summary of the invention
Technical problem for above-mentioned existence, the utility model proposes a kind of high-voltage dynamic reactive compensation device based on the magnetic valve type controllable reactor type, with the purpose that realizes reducing network loss, raising power supplying efficiency, improving power supply quality, this device compensation precision is high, compensation characteristic is level and smooth, and making and operating cost are low.
The technical solution of the utility model is: comprise filtering capacitor group FC branch road and a Regulatable reactor MCR branch road of the pondage of can dividing into groups that is connected in parallel on the system balance bus, FC branch road and MCR branch road link to each other with the compensation bus by isolating switch separately; The compensation bus links to each other with the system high pressure bus through the compensation arrangement outlet.
Described FC branch road comprises fling-cut switch, filtering capacitor and the filter reactor of coupled in series.
The said fling-cut switch of described FC branch road is vacuum contactor.
Described MCR branch road includes one group of MCR Regulatable reactor that connects with leg-of-mutton type of attachment.
The current signal and the system high pressure bus voltage signal that also comprise an acquisition system point of incoming cables, by the CPU computing, the idle amount that the system that calculates is required is sent control command with this, controls the FC branch road microcomputerized controller of the switching of corresponding FC branch road; FC branch road microcomputerized controller is connected with the fling-cut switch of FC branch road.
Also comprise one with current signal and the bus voltage signal of point of incoming cables, by FC branch road microcomputerized controller CPU calculation process, by different requirements, realize minute phase control, power factor controlling and idle control in control algolithm; By the control signal that exciting part produces the silicon controlled conducting state is carried out phase shifting control, and then realize the MCR branch road control protected location of dynamic adjustments MCR branch road perception reactive current.
Described MCR branch road control protected location comprises control guard block, exciting part and monitor component.
Described FC branch road also comprises voltage input signal and the second current transformer current input signal of FC branch road and the FC branch protection unit of output protection output signal of a receiving system high voltage bus; FC branch protection unit one end links to each other with the system high pressure bus through voltage transformer; the other end is connected with the second current transformer, and the second current transformer is loaded between fling-cut switch and the filtering capacitor.
Operation principle of the present utility model is: the FC branch road mainly satisfies the reactive requirement that changes stage by stage in the system, this part capacity is divided into several capacitor groups, calculate the reactive requirement amount by microcomputerized controller according to the electric current, the voltage signal that detect, send control command, the switching of control respective branch is realized the coarse adjustment of System Reactive Power demand; The MCR branch road is then pressed the variation of system loading, and it is perceptual idle that the control magnetic valve type controllable reactor is exported, and to absorb the unnecessary capacitive reactive power of FC branch road output, realizes the fine tuning of System Reactive Power demand, so that system's perception and capacitive reactive power tend to balance.FC branch road and MCR branch road share a cover compensation arrangement outgoing line cabinet, and each branch road arranges when independently isolating switch is used for maintenance and uses.The first current transformer and voltage transformer are used for providing detection signal to the cpu controller of microcomputerized controller and MCR, and the second current transformer and the 3rd current transformer are respectively the FC branch road and MCR branch road control protection system provides current measurement and guard signal.When breaking down, the control protection system is delivered to the compensation arrangement switch cubicle with guard signal and is carried out sub-switching operation, and can upload protection or alarm signal to supervisory control system by communication interface.
Advantage of the present utility model: by to FC branch road grouping automatic switching, can greatly reduce the capacity of MCR branch road part, under the prerequisite that guarantees compensation precision and speed, reduce the cost of equipment, and reduce and installed the harmonic wave size that self produces; Simultaneously, the FC branch road is by the special selection to fixed capacitor and reactor, make it in fixed frequency place series resonance, when providing capacitive reactive power to system, can and install the harmonic current that self produces and carry out filtering the harmonic current in the system, further optimize the power supply quality of system.
The utility model comprehensively is integral the Regulatable reactor of low capacity and the filtering capacitor group of jumbo grouping pondage, can satisfy continuous, quick, the jumbo reactive power compensation needs of system loading, the harmonic pollution that again can solving device system be caused.The utility model is used for improving power factor, adjustment voltage, improvement harmonic wave, the lower loss of electrical network, improves the utilance of electrical network, has guaranteed the security of system economical operation.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure, 1, the compensation bus, 2, the FC branch road; 3, MCR branch road, 4, vacuum contactor, 5, filtering capacitor; 6, filter reactor, 7, the MCR Regulatable reactor, the 8, first current transformer; 9, the second current transformer, the 10, the 3rd current transformer, 11, system's service entrance switch; 12, voltage transformer, 13, the load outlet switch, 14, FC branch road microcomputerized controller; 15, FC branch protection unit, 16, MCR branch road control protected location.
Embodiment
Among Fig. 1, the automatic switching FC branch road 2 and the Regulatable reactor MCR branch road 3 that are formed by the filtering capacitor that links to each other with compensation bus 1 by isolating switch separately and filter reactor, be connected on the system high pressure bus by the compensation arrangement outlet switch, load is connected on the system high pressure bus with the utility model by load outlet switch 13, and compensation bus 1 is 3-35kV high voltage bus.FC branch road 2 is by vacuum contactor 4, filtering capacitor 5, filter reactor 6, the second current transformer 9, FC branch road microcomputerized controller 14 and FC branch protection unit 15 form, the current signal of FC branch road microcomputerized controller 14 acquisition system points of incoming cables and the voltage signal of system high pressure bus, the voltage signal of the system high pressure bus that FC branch road microcomputerized controller gathers is taken from the voltage transformer 12 that is connected with the system high pressure bus, current signal is from first current transformer 8 at place, system's service entrance switch 11 places, by the CPU computing, the idle amount that the system that calculates is required, send control command with this, control the switching of corresponding FC branch road 2; The switching executive component is high-pressure vacuum contactor; MCR props up the compositions such as route the 3rd current transformer 10, MCR Regulatable reactor 7, MCR branch road control protected location 16, and the control protected location comprises control guard block, exciting part and monitor component.MCR branch road 3 is controlled the protected location sampling currents, voltage signal is identical with FC branch road 2, also be current signal and the bus voltage signal of point of incoming cables, by the CPU calculation process, by different requirements, realize minute phase control, power factor controlling and idle control in control algolithm; By the control signal that exciting part produces the silicon controlled conducting state is carried out phase shifting control, and then realize the purpose of dynamic adjustments MCR branch road 3 perceptual reactive currents.The capacitive reactive power of FC branch road 2 outputs and perceptual idle cooperation of MCR branch road 3 outputs satisfy system loading and change required reactive requirement amount.
Claims (8)
1. high-voltage dynamic reactive compensation device, it is characterized in that: comprise filtering capacitor group FC branch road (2) and a Regulatable reactor MCR branch road (3) of the pondage of can dividing into groups that is connected in parallel on the system balance bus (1), FC branch road (2) and MCR branch road (3) link to each other with compensation bus (1) by isolating switch separately.
2. high-voltage dynamic reactive compensation device according to claim 1, it is characterized in that: described FC branch road (2) comprises fling-cut switch (4), filtering capacitor (5) and the filter reactor (6) of coupled in series.
3. high-voltage dynamic reactive compensation device according to claim 2, it is characterized in that: the said fling-cut switch of described FC branch road (2) (4) is vacuum contactor.
4. high-voltage dynamic reactive compensation device according to claim 1 is characterized in that: described MCR branch road (3) includes one group of MCR Regulatable reactor (7) that connects with leg-of-mutton type of attachment.
5. high-voltage dynamic reactive compensation device according to claim 1, it is characterized in that: also comprise current signal and the system high pressure bus voltage signal of an acquisition system point of incoming cables, control the FC branch road microcomputerized controller (14) of the switching of corresponding FC branch road (2); FC branch road microcomputerized controller (14) is connected with the fling-cut switch (4) of FC branch road (2).
6. high-voltage dynamic reactive compensation device according to claim 1; it is characterized in that: also comprise one with current signal and the bus voltage signal of point of incoming cables; by FC branch road microcomputerized controller (14) CPU calculation process; by the control signal that exciting part produces the silicon controlled conducting state is carried out phase shifting control, and then realize the MCR branch road control protected location (16) of the perceptual reactive current of dynamic adjustments MCR branch road (3).
7. high-voltage dynamic reactive compensation device according to claim 6 is characterized in that: described MCR branch road control protected location (16) comprises control guard block, exciting part and monitor component.
8. high-voltage dynamic reactive compensation device according to claim 1; it is characterized in that: described FC branch road (2) also comprises voltage input signal and the second current transformer (9) current input signal of FC branch road (2) and the FC branch protection unit (15) of output protection output signal of a receiving system high voltage bus; FC branch protection unit (15) one ends link to each other with the system high pressure bus through voltage transformer (12); the other end is connected with the second current transformer (9), and the second current transformer (9) is loaded between fling-cut switch (4) and the filtering capacitor (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201481700U CN202651795U (en) | 2012-04-10 | 2012-04-10 | High-voltage dynamic reactive power compensator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201481700U CN202651795U (en) | 2012-04-10 | 2012-04-10 | High-voltage dynamic reactive power compensator |
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| CN202651795U true CN202651795U (en) | 2013-01-02 |
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| CN2012201481700U Expired - Lifetime CN202651795U (en) | 2012-04-10 | 2012-04-10 | High-voltage dynamic reactive power compensator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207225A (en) * | 2014-06-19 | 2015-12-30 | 国网山西省电力公司电力科学研究院 | Static type dynamic reactive power compensation device with adaptive adjustment of response speed |
| CN106026131A (en) * | 2016-07-14 | 2016-10-12 | 江西瑞林电气自动化有限公司 | Power quality control device and method in hydrometallurgy operation process |
| CN109038595A (en) * | 2018-06-29 | 2018-12-18 | 北方工业大学 | Low-capacity/low-impedance flexible switching system and control method thereof |
-
2012
- 2012-04-10 CN CN2012201481700U patent/CN202651795U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207225A (en) * | 2014-06-19 | 2015-12-30 | 国网山西省电力公司电力科学研究院 | Static type dynamic reactive power compensation device with adaptive adjustment of response speed |
| CN106026131A (en) * | 2016-07-14 | 2016-10-12 | 江西瑞林电气自动化有限公司 | Power quality control device and method in hydrometallurgy operation process |
| CN109038595A (en) * | 2018-06-29 | 2018-12-18 | 北方工业大学 | Low-capacity/low-impedance flexible switching system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Intelligent mixed type high-pressure dynamic reactive compensation device Effective date of registration: 20131122 Granted publication date: 20130102 Pledgee: Bank of Hankou, Limited by Share Ltd, Xiangyang branch Pledgor: Hubei China Strong Electric Co., Ltd. Registration number: 2013990000885 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20151223 Granted publication date: 20130102 Pledgee: Bank of Hankou, Limited by Share Ltd, Xiangyang branch Pledgor: Hubei China Strong Electric Co., Ltd. Registration number: 2013990000885 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Intelligent mixed type high-pressure dynamic reactive compensation device Effective date of registration: 20160104 Granted publication date: 20130102 Pledgee: Bank of Hankou, Limited by Share Ltd, Xiangyang branch Pledgor: Hubei China Strong Electric Co., Ltd. Registration number: 2015990001173 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |