CN203398795U - Low-voltage reactive-power dynamic compensation device - Google Patents
Low-voltage reactive-power dynamic compensation device Download PDFInfo
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- CN203398795U CN203398795U CN201320552914.XU CN201320552914U CN203398795U CN 203398795 U CN203398795 U CN 203398795U CN 201320552914 U CN201320552914 U CN 201320552914U CN 203398795 U CN203398795 U CN 203398795U
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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 discloses a low-voltage reactive-power dynamic compensation device including a reactive power compensation controller, a wire inlet switch, multiple groups of three-phase common compensation devices and multiple groups of three-phase distributed compensation devices. A wire inlet end of the wire inlet switch is connected with a three-phase power grid while the other end of the wire inlet switch is connected with the reactive power compensation controller, the three-phase common compensation devices and the three-phase distributed compensation devices. Each group of three-phase common compensation devices and the three-phase distributed compensation devices includes a fuse, a thyristor dynamic combined switch and a filtering reactor. Three filtering reactors of the three-phase common compensation device are connected with three capacitors in triangular connection. The three filtering reactors of the three-phase distributed compensation devices are connected with three capacitors in star-shaped connection. The low-voltage reactive-power dynamic compensation device provided by the utility model is provided with a three-phase common-compensation device and the three-phase distributed compensation device and reactive compensation can be performed by a three-phase common compensation device configuration method, a three-phase distributed compensation device configuration method and a three-phase common compensation/distributed compensation device hybrid method. Therefore, reactive compensation efficiency and reliability are improved substantially, reactive compensation performance is improved and power consumption is reduced.
Description
Technical field
The utility model relates to a kind of power compensating device, particularly a kind of Low-voltage dynamic compensating device.
Background technology
Development along with power electronic technology, intelligent control technology and ICT (information and communication technology), electric power, new equipment continue to bring out, the inductive load using in upgrading urban and rural power grids in recent years and low tension feed unit is more and more, reactive power compensation technology is used widely in the public distribution transforming of various places low-voltage network, the part but current low-pressure reactive compensation equipment also comes with some shortcomings, mainly contains:
(1) fling-cut switch adopts mechanical type A.C. contactor, solid-state relay or controllable silicon more.Mechanical contactor, solid-state relay response speed are slower, in switching process, can produce the impact of shoving, and useful life is short; Thyristor throw-cut mechanism caloric value is large, and long-term work also produces harmonic effects operation of power networks;
(2) gather single signal, adopt three-phase capacitor, three-phase total compensation.Inapplicable when this compensation way is mainly resident for load, three-phase load is probably uneven, causes each phase reactive demand also different, adopts this compensation way occurring in varying degrees mending or owing benefit.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides that a kind of service efficiency is high, the reliable Low-voltage dynamic compensating device of working stability.
The technical scheme that the utility model addresses the above problem is: a kind of Low-voltage dynamic compensating device, comprise idle compensating control, service entrance switch and organize three-phase total compensation device more, the end of incoming cables of service entrance switch is connected with three phase network, the other end is connected with idle compensating control, three-phase total compensation device, each of described three-phase total compensation device includes fuse, thyristor dynamic combination switch, the filter reactor connecting successively mutually, and three filter reactors of described three-phase total compensation device are connected with three capacitors that adopt triangle to be connected respectively.
Described three-phase total compensation device also comprises the first input indicating member, first one end of dropping into indicating member is connected between the thyristor dynamic combination switch and filter reactor of three-phase total compensation device first-phase, and the other end is connected between the thyristor dynamic combination switch and filter reactor of three-phase total compensation device third phase.
Described Low-voltage dynamic compensating device also comprises many group three-phase separate-supplement devices, three-phase separate-supplement device is connected with service entrance switch, three-phase total compensation device, each of described three-phase separate-supplement device includes fuse, thyristor dynamic combination switch, the filter reactor connecting successively mutually, and three filter reactors of three-phase separate-supplement device are connected with adopting three single-phase electricity containers of Y-connection respectively.
Each includes the second input indicating member on mutually described three-phase separate-supplement device, and second one end of dropping into indicating member is connected between the thyristor dynamic combination switch and filter reactor of three-phase separate-supplement device, and the other end is connected with the zero line of three phase network.
Described Low-voltage dynamic compensating device also comprises temperature sensor, and temperature sensor is connected with temperature controller, and the temperature signal collecting is sent in temperature controller, and temperature controller is connected with blower fan.
The beneficial effects of the utility model are: the utility model is provided with idle compensating control, three-phase total compensation device and three-phase separate-supplement device, idle compensating control gathers three-phase or monophase current voltage signal, can adopt three-phase capacitor or three-phase capacitor+phase-splitting capacitor complex configuration mode to three-phase load unbalanced electric power system do accurate reactive power compensation, when three-phase all needs to compensate, the preferential three-phase capacitor that drops into, if certain still needs compensation mutually, then drops into the single-phase electricity container of this phase, efficiency and the reliability of reactive power compensation have so greatly been improved, improve reactive power compensation performance, reduced power consumption, and the utility model has been installed temperature controller, can be by temperature in temperature sensor detector, can self-starting fan radiating during excess Temperature, effectively extended the useful life of this device.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, the utility model comprises idle compensating control KCC, service entrance switch QFS, 4 groups of three-phase total compensation devices, two groups of three-phase separate-supplement devices, temperature sensor CQ, temperature controller WK, blower fan FN, service entrance switch QFS end of incoming cables is connected with three phase network, the other end and idle compensating control KCC, three-phase total compensation device is connected, each of described three-phase total compensation device includes the fuse FF connecting successively mutually, thyristor dynamic combination switch T, filter reactor L, three filter reactor L of described three-phase total compensation device are connected with three capacitor C that adopt triangle to be connected respectively, described three-phase total compensation device also comprises the first input indicating member, first one end of dropping into indicating member is connected between the thyristor dynamic combination switch T and filter reactor L of three-phase total compensation device first-phase, and the other end is connected between the thyristor dynamic combination switch T and filter reactor L of three-phase total compensation device third phase,
Three-phase separate-supplement device is connected with service entrance switch QFS, three-phase total compensation device, each of described three-phase separate-supplement device includes fuse FF ', thyristor dynamic combination switch TF, the filter reactor L ' connecting successively mutually, and three filter reactor L ' of three-phase separate-supplement device are connected with adopting three single-phase electricity container C ' of Y-connection respectively; Each includes the second input indicating member on mutually described three-phase separate-supplement device, and second one end of dropping into indicating member is connected between the thyristor dynamic combination switch TF and filter reactor L ' of three-phase separate-supplement device, and the other end is connected with the zero line of three phase network;
Temperature sensor CQ is for detection of temperature in device, and temperature sensor CQ is connected with temperature controller WK, and the temperature signal collecting is sent in temperature controller WK, and temperature controller WK is connected with blower fan FN; The blower fan FN installing in temperature controller WK control device while reaching temperature limit starts, so that radiating and cooling.Between described service entrance switch QFS and three-phase total compensation device, be provided with current transformer TA.
Filter reactor in three-phase total compensation device and three-phase separate-supplement device and capacitor form 5 times or 3 above harmonic waves suppress unit, make to only have a small amount of harmonic wave to enter the safety allowance loop with reactance protection; Each safety allowance loop all configures fuse, while surpassing rated current, in 10ms, disconnects rapidly, avoids total fuse blows.
Idle compensating control KCC realizes compensate function by controlling the shutoff of thyristor combination switch in three-phase total compensation device and three-phase separate-supplement device, and it is with harmonic detection function, and has excess harmonic wave blocking function; Configurable RS232 or RS485 communication interface, if in the time of many capacitor box parallel runnings of the large especially needs of compensation capacity, can form main, random control mode by RS485 interface, main cabinet and attached cabinet common networking form switching cycle, guarantee each single capacitor switching cycle; Can select the multiple communication modes such as wired, wireless, GPRS module, and idle compensating control KCC can numeral show power factor, can check the parameters such as electric current, voltage, active power, reactive power by button.
First of three-phase total compensation device drops into the second input indicating member of indicating member and three-phase separate-supplement device and is all furnished with signal lamp, can intuitively indicate electric capacity to drop into situation.
The utility model three-phase total compensation module and three-phase separate-supplement module both can be used alone, also can mix use, can form three-phase total compensation device, three-phase separate-supplement device and three-phase total compensation, the mixed compensation arrangement of minute benefit, idle compensating control is controlled three-phase total compensation device and three-phase separate-supplement device, when three-phase all needs to compensate, the preferential three-phase capacitor that drops into, if certain still needs compensation mutually, then drops into the single-phase electricity container of this phase, first cuts single-phase electricity container during excision.The utility model adopts intelligent contactless switching circuit, zero passage detection, zero cross fired, switching moment is by controlled silicon conducting, shutoff, during work by idle switch conduction, without inrush phenomenon impact, without switching overvoltage, without arc reignition, without Harmfulness Caused by Harmonics, really reached energy-saving and cost-reducing object.
Claims (5)
1. a Low-voltage dynamic compensating device, it is characterized in that: comprise idle compensating control, service entrance switch and organize three-phase total compensation device more, the end of incoming cables of service entrance switch is connected with three phase network, the other end is connected with idle compensating control, three-phase total compensation device, each of described three-phase total compensation device includes fuse, thyristor dynamic combination switch, the filter reactor connecting successively mutually, and three filter reactors of described three-phase total compensation device are connected with three capacitors that adopt triangle to be connected respectively.
2. Low-voltage dynamic compensating device as claimed in claim 1, it is characterized in that: described three-phase total compensation device also comprises the first input indicating member, first one end of dropping into indicating member is connected between the thyristor dynamic combination switch and filter reactor of three-phase total compensation device first-phase, and the other end is connected between the thyristor dynamic combination switch and filter reactor of three-phase total compensation device third phase.
3. Low-voltage dynamic compensating device as claimed in claim 1 or 2, it is characterized in that: also comprise many group three-phase separate-supplement devices, three-phase separate-supplement device is connected with service entrance switch, three-phase total compensation device, each of described three-phase separate-supplement device includes fuse, thyristor dynamic combination switch, the filter reactor connecting successively mutually, and three filter reactors of three-phase separate-supplement device are connected with adopting three single-phase electricity containers of Y-connection respectively.
4. Low-voltage dynamic compensating device as claimed in claim 3, it is characterized in that: each includes the second input indicating member on mutually described three-phase separate-supplement device, second one end of dropping into indicating member is connected between the thyristor dynamic combination switch and filter reactor of three-phase separate-supplement device, and the other end is connected with the zero line of three phase network.
5. Low-voltage dynamic compensating device as claimed in claim 3, is characterized in that: also comprise temperature sensor, temperature sensor is connected with temperature controller, and the temperature signal collecting is sent in temperature controller, and temperature controller is connected with blower fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320552914.XU CN203398795U (en) | 2013-09-06 | 2013-09-06 | Low-voltage reactive-power dynamic compensation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320552914.XU CN203398795U (en) | 2013-09-06 | 2013-09-06 | Low-voltage reactive-power dynamic compensation device |
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| CN203398795U true CN203398795U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320552914.XU Expired - Lifetime CN203398795U (en) | 2013-09-06 | 2013-09-06 | Low-voltage reactive-power dynamic compensation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836124A (en) * | 2015-04-26 | 2015-08-12 | 成都恒力达科技有限公司 | Capacitor reactive power compensation cabinet |
| CN105207230A (en) * | 2015-09-23 | 2015-12-30 | 国家电网公司 | Reactive power and harmonic protection automatic control switch |
| CN105305457A (en) * | 2015-09-15 | 2016-02-03 | 安徽佑赛科技有限公司 | Low voltage reactive compensation device and low voltage reactive compensation system |
| CN106849124A (en) * | 2017-03-16 | 2017-06-13 | 上海柴德自动化有限公司 | A kind of low-voltage reactive power automatic compensation device |
-
2013
- 2013-09-06 CN CN201320552914.XU patent/CN203398795U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836124A (en) * | 2015-04-26 | 2015-08-12 | 成都恒力达科技有限公司 | Capacitor reactive power compensation cabinet |
| CN105305457A (en) * | 2015-09-15 | 2016-02-03 | 安徽佑赛科技有限公司 | Low voltage reactive compensation device and low voltage reactive compensation system |
| CN105207230A (en) * | 2015-09-23 | 2015-12-30 | 国家电网公司 | Reactive power and harmonic protection automatic control switch |
| CN106849124A (en) * | 2017-03-16 | 2017-06-13 | 上海柴德自动化有限公司 | A kind of low-voltage reactive power automatic compensation device |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20140115 |
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| CX01 | Expiry of patent term |