CN201667543U - High-voltage dynamic reactive compensation device based on adjustable magnetic control reactor - Google Patents
High-voltage dynamic reactive compensation device based on adjustable magnetic control reactor Download PDFInfo
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- CN201667543U CN201667543U CN2010201682185U CN201020168218U CN201667543U CN 201667543 U CN201667543 U CN 201667543U CN 2010201682185 U CN2010201682185 U CN 2010201682185U CN 201020168218 U CN201020168218 U CN 201020168218U CN 201667543 U CN201667543 U CN 201667543U
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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 discloses a high-voltage dynamic reactive compensation device based on an adjustable magnetic control reactor, consisting of a control system, a magnetic control reactor unit and a fixed capacitor unit, wherein the control system is respectively connected with the magnetic control reactor unit and the fixed capacitor unit through electric signals, and consists of a data acquisition unit, a CPU control arithmetic element and an output unit; the CPU control arithmetic element is respectively connected with the data acquisition unit and the output unit through electric signals; the magnetic control reactor unit mainly comprises an adjustable magnetic control reactor, a thyristor valve group and a disconnecting switch; the adjustable magnetic control reactor is connected with the thyristor valve group through electric signals; the thyristor valve group is connected with the disconnecting switch through electric signals; the fixed capacitor unit consists of a fixed capacitor, a filter reactor and a breaker; the fixed capacitor is connected with the filter reactor through electric signals; and the filter reactor is connected with the breaker through electric signals. The device operates very stably in the high-voltage occasion, and avoids the problem of frequent maintenance for a user.
Description
Technical field
The utility model relates to and belongs to the flexible AC transmission technical field, is specifically related to a kind of high pressure dynamic reactive compensation device of adjustable magnet controlled reactor.
Background technology
Along with the increase day by day of system loading and the raising gradually of electric pressure, electric power system is also increasing to the demand of reactive power, particularly not enough and be equipped with irrational phenomenon in the construction of China's electrical network and the reactive compensation capacity that exists in service always, and this situation easier useful life of causing system voltage fluctuation, reducing electric equipment also will absorb a large amount of reactive powers simultaneously.
Traditional switched capacitor (for example: fixed capacitor, switch on-off capacitor, thyristor switchable capacitor etc.) is the stable important function of having brought into play of the voltage of keeping electric power system in a very long time, but, no longer satisfy the higher requirement of electric power system because of its compensation is ladder, perception and some shortcomings such as capacitive reactive power, the frequent switching of switch can't be provided simultaneously.Another compensation arrangement commonly used is a thyristor-controlled reactor type reactive power compensator, though it has quick inhibition voltage fluctuation, the permission fluctuation of control load or burden without work that can be level and smooth, advantages such as steady load, but because thyristor and reactor are under the same phase voltage, the voltage height, power is big, floor space is big, the cooling of thyristor valve group is strict, the price height, though thyristor-controlled reactor can be adjusted continuously and exert oneself, but waveform indention, it is a very big harmonic source, but also must move simultaneously with fixed capacitor, so in some operating mode, limited its development.
Summary of the invention
In order to overcome above-mentioned technical problem, the utility model provides a kind of high pressure dynamic reactive compensation device based on adjustable magnet controlled reactor.
Based on the high pressure dynamic reactive compensation device of adjustable magnet controlled reactor, it is made up of control system (1), magnet controlled reactor unit (2) and fixed capacitor unit (3); Control system (1) signal of telecommunication respectively connects magnet controlled reactor unit (2) and fixed capacitor unit (3); Described control system (1) is made up of data acquisition unit (4), CPU control and calculation unit (5) and output unit (6), and CPU control and calculation unit (5) signal of telecommunication respectively connects data acquisition unit (4) and output unit (6); Described magnet controlled reactor unit (2) mainly is made up of adjustable magnet controlled reactor (7), thyristor valve group (8) and isolating switch (9), adjustable magnet controlled reactor (7) signal of telecommunication connects thyristor valve group (8), and thyristor valve group (8) signal of telecommunication connects isolating switch (9); Described fixed capacitor unit (3) is made up of fixed capacitor (10), filter reactor (11) and circuit breaker (12), and fixed capacitor (10) signal of telecommunication connects filter reactor (11), and filter reactor (11) signal of telecommunication connects circuit breaker (12).
The utility model also has other characteristics:
The fixed capacitor unit further connects filter reactor by the fixed capacitor signal of telecommunication, and the filter reactor signal of telecommunication connects vacuum contactor and forms.
Technique effect of the present invention is:
(1) reliability is high: the topmost feature of adjustable magnet controlled reactor type reactive power compensator is exactly that thyristor is installed in low tension loop and is not directly installed in the major loop, the required voltage that bears of thyristor only is about 1% of major loop, just because of this, adjustable magnet controlled reactor type reactive power compensator has high reliability.
(2) lower harmonic content: the percent harmonic distortion of the system of three-phase corner connection meets the relevant criterion of national regulation less than 5%, if adopt multipleization connection percent harmonic distortion to be reduced to about 1.2%, in addition lower.
(3) volume is little, and the volume of adjustable magnet controlled reactor body only is about 2/5 of a conventional dry air core reactor.
(4) be very suitable for the direct hanging net operation of high-voltage fence, reduce by a step-down transformer, significantly reduce cost, reduce floor space.
(5) response speed is fast, can reach about 200ms, can satisfy most of on-the-spot requirement to dynamic passive compensation fully.
(6) do not need the required cooling device of thyristor-controlled reactor type reactive power compensator, lowered failure rate, reduce land area.
(7) the digital chip controls of employing system, the real-time monitoring system power quality data, and by supercomputing, dynamic precision responds the idle of bucking-out system demand.The AC wave analytical technology of application of advanced can guarantee the correctness of parameter setting and the stability of work under adverse circumstances such as strong jamming, strong harmonic wave.
Description of drawings
Fig. 1 is based on the high pressure dynamic reactive compensation device structure chart of adjustable magnet controlled reactor;
Fig. 2 is the equivalent circuit diagram of magnet controlled reactor;
Fig. 3 is the utility model structure diagram; Wherein 1, control system, 2, magnet controlled reactor unit, 3, the fixed capacitor unit, 4, data acquisition unit, 5, CPU control and calculation unit, 6, output unit, 7, adjustable magnet controlled reactor, 8, the thyristor valve group, 9, isolating switch, 10, fixed capacitor, 11, filter reactor, 12, circuit breaker.
Concrete enforcement
The present invention is further illustrated below in conjunction with accompanying drawing:
Its operation principle is: the fixed capacitor unit is used for reactive power compensation and filtering harmonic wave, provides system needed capacitive reactive power, and magnetic control Regulatable reactor unit is used for balance sysmte because the capacitive reactive power that fluctuation produced of load; Control system is used for the protection of whole system and the control of magnet controlled reactor.
Fig. 1 has listed the high pressure dynamic passive compensation system of one tunnel adjustable magnet controlled reactor branch road+three tunnel compensation branch roads, wherein:
The impact load or burden without work that branch road QF-load is required;
The adjustable reactive power that branch road QL-magnet controlled reactor produces;
The constant reactive power of first-harmonic of branch road QC-filter branch output;
The reactive power that branch road QS-imports from electrical network;
As shown in Figure 1, according to the load nature of electricity consumed of load, adjustable magnet controlled reactor, 3 times, 5 times, 7 times double high pass compensation (filtering) branch roads are connected on the high voltage bus, and the bucking-out system of formation is carried out reactive power compensation to bus.By regulating the pilot angle size of magnet controlled reactor, just can change the value of magnet controlled reactor reactive power Q L, impact with the compensating load reactive power, as when load reactive power Q F increases suddenly, magnet controlled dynamic passive compensation control device reduces silicon controlled triggering and conducting angle, the electric current of control loop is increased, the reactive power of output reduces, the constant portion of the reactive power of load is by the compensation of compensation (filtering) branch road like this, and the change part is regulated by magnet controlled reactor, keep constant (being set to zero or a smaller value) with the reactive power Q S=QF+ (QL-QC) that guarantees the bus input, thereby, stablized system voltage, reduced power loss, improve power factor, reached the purpose of dynamic passive compensation.
In the electric current of adjustable magnet controlled reactor branch road except fundametal compoment, also has harmonic component, thereby, the filter branch of 3 times, 5 times, 7 times double high passes is housed on bus, its effect is to provide a low impedance path for harmonic current that adjustable magnet controlled reactor branch road and load produce, makes harmonic current and voltage reduce to minimum to the influence of electric power system.
Fig. 2 is the equivalent circuit diagram of magnet controlled reactor, and as seen from Figure 2, as if K1, not conductings of K2, because the symmetry of structure, reactor and unloaded transformer do not have difference.Suppose that supply voltage is in positive half cycle, controllable silicon K1 bears forward voltage, and K2 bears reverse voltage.The conducting (2 equipotentials of a and b) if K1 is triggered, supply voltage provides DC control electric current for the N2 coil to circuit by the number of turn after being the coil self coupling transformation of δ through no-load voltage ratio; If supply voltage is in negative half period, when the K2 conducting, in the loop, produce the DC control electric current equally, and the direction of the Control current that is produced is the same during with the K1 conducting, promptly in a power frequency period of power supply, two silicon controlleds take turns conducting and have played the effect of full-wave rectification, and sustained diode plays a part afterflow, is beneficial to silicon controlled and turn-offs.Just can change the size of Control current by change silicon controlled trigger angle, thereby change the magnetic saturation degree of iron core of electric reactor, the inductance value of smooth adjustment controlled reactor.Controllable silicon only need bear low pressure, safety and stability.
High pressure dynamic reactive compensation device and thyristor-controlled reactor type reactive power compensator based on adjustable magnet controlled reactor compare, the advantage and the function of thyristor-controlled reactor type reactive power compensator have been inherited fully, solve the problem of switch on-off capacitor and the indeterminable smooth adjustment of thyristor switchable capacitor, and overcome the various shortcoming of thyristor-controlled reactor type reactive power compensator.Adjustable in addition magnet controlled reactor type reactive power compensator moves highly stable under the high pressure occasion, has removed the trouble that the user often safeguards from, brings the user economic interests and the safety guarantee of normal safety in production.
Claims (4)
1. the high pressure dynamic reactive compensation device based on adjustable magnet controlled reactor is made up of control system (1), magnet controlled reactor unit (2) and fixed capacitor unit (3); It is characterized in that: control system (1) signal of telecommunication respectively connects magnet controlled reactor unit (2) and fixed capacitor unit (3).
2. a kind of high pressure dynamic reactive compensation device according to claim 1 based on adjustable magnet controlled reactor, it is characterized in that described control system (1) is made up of data acquisition unit (4), CPU control and calculation unit (5) and output unit (6), CPU control and calculation unit (5) signal of telecommunication respectively connects data acquisition unit (4) and output unit (6).
3. a kind of high pressure dynamic reactive compensation device according to claim 1 based on adjustable magnet controlled reactor, it is characterized in that described magnet controlled reactor unit (2) mainly is made up of adjustable magnet controlled reactor (7), thyristor valve group (8) and isolating switch (9), adjustable magnet controlled reactor (7) signal of telecommunication connects thyristor valve group (8), and thyristor valve group (8) signal of telecommunication connects isolating switch (9).
4. a kind of high pressure dynamic reactive compensation device according to claim 1 based on adjustable magnet controlled reactor, it is characterized in that described fixed capacitor unit (3) is made up of fixed capacitor (10), filter reactor (11) and circuit breaker (12) or vacuum contactor, fixed capacitor (10) signal of telecommunication connects filter reactor (11), and filter reactor (11) signal of telecommunication connects circuit breaker (12) or vacuum contactor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201682185U CN201667543U (en) | 2010-04-23 | 2010-04-23 | High-voltage dynamic reactive compensation device based on adjustable magnetic control reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010201682185U CN201667543U (en) | 2010-04-23 | 2010-04-23 | High-voltage dynamic reactive compensation device based on adjustable magnetic control reactor |
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| CN201667543U true CN201667543U (en) | 2010-12-08 |
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| CN2010201682185U Expired - Fee Related CN201667543U (en) | 2010-04-23 | 2010-04-23 | High-voltage dynamic reactive compensation device based on adjustable magnetic control reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086974A (en) * | 2020-08-05 | 2020-12-15 | 国网浙江省电力有限公司杭州供电公司 | Regional substation reactive voltage control system based on reactive power continuous adjustment |
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2010
- 2010-04-23 CN CN2010201682185U patent/CN201667543U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086974A (en) * | 2020-08-05 | 2020-12-15 | 国网浙江省电力有限公司杭州供电公司 | Regional substation reactive voltage control system based on reactive power continuous adjustment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Jiuzhou Electric Co., Ltd., Harbin Document name: Notification of Termination of Patent Right |
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| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20190423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |