CN202749831U - Novel composite switch - Google Patents
Novel composite switch Download PDFInfo
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- CN202749831U CN202749831U CN201220469215.4U CN201220469215U CN202749831U CN 202749831 U CN202749831 U CN 202749831U CN 201220469215 U CN201220469215 U CN 201220469215U CN 202749831 U CN202749831 U CN 202749831U
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- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims description 21
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 230000020169 heat generation Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram 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
本实用新型公开了一种新型复合开关，包括可控硅开关、过电流保护装置、微处理器、无线发射接收模块，所述可控硅开关连接过电流保护装置，所述过电流保护装置和无线发射接收模块连接微处理器，所述无线发射接收模块设置一无线监测系统，所述无线监测系统进一步包括采集模块、传输模块、数据处理模块,采集模块与数据处理模块之间通过传输模块无线通信。本实用新型通过上述方案以使复合开关吸收了晶闸管零电压投入，零电流切除及接触器导通内阻小，不发热的优点，克服了接触器开关投切电容器所引起的涌流电弧等缺陷。
The utility model discloses a novel compound switch, which comprises a thyristor switch, an overcurrent protection device, a microprocessor, and a wireless transmitting and receiving module. The thyristor switch is connected with the overcurrent protection device, and the overcurrent protection device and The wireless transmitting and receiving module is connected to the microprocessor, and the wireless transmitting and receiving module is provided with a wireless monitoring system, and the wireless monitoring system further includes an acquisition module, a transmission module, and a data processing module, and the wireless transmission module is used between the acquisition module and the data processing module. communication. The utility model adopts the above scheme to make the composite switch absorb the advantages of zero-voltage input of the thyristor, zero-current cut-off, small conduction internal resistance of the contactor, and no heat generation, and overcomes defects such as inrush arcs caused by switching capacitors of the contactor switch.
Description
技术领域 technical field
本实用新型涉及一种低压电力电网无功补偿使用电力电容器时的投切控制装置，尤其是指一种新型复合开关。 The utility model relates to a switching control device when a power capacitor is used for reactive power compensation of a low-voltage power grid, in particular to a novel composite switch.
背景技术 Background technique
以往执行低压无功补偿电力电容器投切任务的元件，一般使用交流接触器。当使用交流电磁接触器时，由于在电容器通断瞬间产生涌流，使接触器的触点容易烧坏；在电容器投入运行期间，接触器电磁线圈本身不但具有功耗，也因发热而烧毁的可能性极大，所以使用寿命短、安全性差。 In the past, AC contactors were generally used as components to perform switching tasks of low-voltage reactive power compensation power capacitors. When using an AC electromagnetic contactor, the contacts of the contactor are easy to burn out due to the inrush current generated at the moment when the capacitor is turned on and off; when the capacitor is put into operation, the electromagnetic coil of the contactor itself not only has power consumption, but also may burn out due to heat Extremely strong, so the service life is short and the safety is poor.
实用新型内容 Utility model content
本实用新型的目的在于提供一种新型复合开关，它解决了上述交流电磁接触器存在的问题，既安全又可靠。 The purpose of this utility model is to provide a new compound switch, which solves the problems of the above-mentioned AC electromagnetic contactor, and is safe and reliable.
为达到上述目的，本实用新型采取的解决方案是： In order to achieve the above object, the solution that the utility model takes is:
一种新型复合开关，包括可控硅开关、过电流保护装置、微处理器、无线发射接收模块，所述可控硅开关连接过电流保护装置，所述过电流保护装置连接微处理器，所述过电流保护装置包括电流互感器、取样整流电路,以及信号处理电路,所述取样整流电路包括至少四组整流电路分路与至少三个电流互感器;每组整流电路分路由两个整流二极管串联而成;三个电流互感器的二次侧的其中一个输出端分别接入一组整流电路分路的两个整流二极管之间;另一个输出端分别经过一个取样电阻后,与一个接地取样电阻的一端并联;接地取样电阻的另一端接在一个剩余的整流电路分路的两个整流二极管之间,同时三个取样电阻及接地取样电阻的两端分别接入所述信号处理电路；所述无线发射接收模块设置一无线监测系统，所述无线监测系统进一步包括采集模块、传输模块、数据处理模块,采集模块与数据处理模块之间通过传输模块无线通信，所述无线发射接收模块连接微处理器。 A novel composite switch, comprising a thyristor switch, an overcurrent protection device, a microprocessor, and a wireless transmitting and receiving module, the thyristor switch is connected to an overcurrent protection device, the overcurrent protection device is connected to a microprocessor, and the The overcurrent protection device includes a current transformer, a sampling rectification circuit, and a signal processing circuit. The sampling rectification circuit includes at least four sets of rectification circuit shunts and at least three current transformers; each set of rectification circuit shunts is routed by two rectifier diodes It is formed in series; one of the output ends of the secondary side of the three current transformers is respectively connected between two rectifier diodes in a group of rectification circuit branches; the other output end passes through a sampling resistor respectively, and is connected to a ground sampling One end of the resistance is connected in parallel; the other end of the grounding sampling resistance is connected between two rectifier diodes in a remaining rectification circuit branch, and the two ends of the three sampling resistances and the grounding sampling resistance are respectively connected to the signal processing circuit; The wireless transmitting and receiving module is provided with a wireless monitoring system, the wireless monitoring system further includes an acquisition module, a transmission module, and a data processing module, and the acquisition module and the data processing module communicate wirelessly through the transmission module, and the wireless transmitting and receiving module is connected to the micro processor.
所述复合开关与三相交流电压电路输出端串联谐波滤波器。 The composite switch is connected in series with a harmonic filter at the output end of the three-phase AC voltage circuit.
所述复合开关与电容器回路安装放电指示灯，所述指示灯安装在电容器端子上。 The composite switch and the capacitor circuit are equipped with a discharge indicator light, and the indicator light is installed on the capacitor terminal.
相对于现有技术的有益效果是： The beneficial effects relative to the prior art are:
1，内含微处理器，智能控制电容器切换。 1. Contains a microprocessor to intelligently control capacitor switching.
2，用可控硅通断电容器组，无电弧，无涌流，响应快。 2. Use thyristor on-off capacitor bank, no arc, no inrush current, fast response.
3，导通内阻很小，不产生谐波，不产生合闸涌流。 3. The conduction internal resistance is very small, no harmonics, and no closing inrush current.
4，过零投切：复合开关的基本工作原理是将可控硅开关与磁保持继电器并接，实现电压过零导通和电流过零断开，使复合开关在接通和断开的瞬间具有可控硅开关无涌流的优点，而在正常接通期间又具有物理开关无功耗的优点。其实现方法是：投入时在电压过零瞬间控制可控硅先导通，稳定后再将磁保持继电器吸合导通；而切除时是先将磁保持继电器断开，可控硅延时过零断开，从而实现过零切除。 4. Zero-crossing switching: The basic working principle of the composite switch is to connect the thyristor switch and the magnetic latching relay in parallel to realize the voltage zero-crossing conduction and the current zero-crossing disconnection, so that the composite switch It has the advantage of no inrush current of the thyristor switch, and has the advantage of no power consumption of the physical switch during normal turn-on. The realization method is: when the voltage is zero-crossed, the thyristor is controlled to conduct first, and then the magnetic latching relay is turned on after the voltage is stable; while the magnetic latching relay is disconnected when the voltage is cut off, the thyristor delays the zero-crossing. disconnected to achieve zero-crossing cut-off.
5，抗干扰能力强。 5. Strong anti-interference ability.
附图说明 Description of drawings
图1为本实用新型的结构原理图。 Fig. 1 is the structure schematic diagram of the utility model.
具体实施方式 Detailed ways
下面结合附图对本实用新型所提供的新型复合开关进行一步说明： The novel composite switch provided by the utility model is described in one step below in conjunction with the accompanying drawings:
如图1所示，该新型复合开关，包括可控硅开关、过电流保护装置、微处理器、无线发射接收模块，所述可控硅开关连接过电流保护装置，所述过电流保护装置连接微处理器，所述过电流保护装置包括电流互感器、取样整流电路,以及信号处理电路,所述取样整流电路包括至少四组整流电路分路与至少三个电流互感器;每组整流电路分路由两个整流二极管串联而成;三个电流互感器的二次侧的其中一个输出端分别接入一组整流电路分路的两个整流二极管之间;另一个输出端分别经过一个取样电阻后,与一个接地取样电阻的一端并联;接地取样电阻的另一端接在一个剩余的整流电路分路的两个整流二极管之间,同时三个取样电阻及接地取样电阻的两端分别接入所述信号处理电路；所述无线发射接收模块设置一无线监测系统，所述无线监测系统进一步包括采集模块、传输模块、数据处理模块,采集模块与数据处理模块之间通过传输模块无线通信，所述无线发射接收模块连接微处理器。 As shown in Figure 1, the novel composite switch includes a thyristor switch, an overcurrent protection device, a microprocessor, and a wireless transmitting and receiving module, the thyristor switch is connected to the overcurrent protection device, and the overcurrent protection device is connected to A microprocessor, the overcurrent protection device includes a current transformer, a sampling rectification circuit, and a signal processing circuit, and the sampling rectification circuit includes at least four sets of rectification circuit branches and at least three current transformers; each set of rectification circuit branches It is formed by connecting two rectifier diodes in series; one output terminal of the secondary side of the three current transformers is respectively connected between the two rectifier diodes of a group of rectifier circuit branches; the other output terminal passes through a sampling resistor respectively , connected in parallel with one end of a grounded sampling resistor; the other end of the grounded sampling resistor is connected between two rectifier diodes in a remaining rectification circuit branch, and at the same time, the two ends of the three sampling resistors and the grounded sampling resistor are respectively connected to the Signal processing circuit; the wireless transmitting and receiving module is provided with a wireless monitoring system, and the wireless monitoring system further includes an acquisition module, a transmission module, and a data processing module, and the transmission module communicates wirelessly between the acquisition module and the data processing module, and the wireless The transmitting and receiving module is connected with the microprocessor.
所述复合开关与三相交流电压电路输出端串联谐波滤波器。 The composite switch is connected in series with a harmonic filter at the output end of the three-phase AC voltage circuit.
所述复合开关与电容器回路安装放电指示灯，所述指示灯安装在电容器端子上。 The composite switch and the capacitor circuit are equipped with a discharge indicator light, and the indicator light is installed on the capacitor terminal.
所述新型复合开关是本公司根据低压无功补偿装置开发的一种能够对并联电容器进行投切的复合开关，它吸收了晶闸管零电压投入，零电流切除及接触器导通内阻小，不发热的优点，克服了接触器开关投切电容器所引起的涌流电弧等缺陷，是城农网改造工程投切电容器最理想的新型复合开光。 The new composite switch is a composite switch developed by our company based on the low-voltage reactive power compensation device that can switch parallel capacitors. The advantage of heat generation overcomes the defects such as inrush arc caused by switching capacitors of contactors. It is the most ideal new composite switch for switching capacitors in urban and rural power grid reconstruction projects.
应当理解的是，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本实用新型所附权利要求的保护范围。 It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220469215.4U CN202749831U (en) | 2012-09-15 | 2012-09-15 | Novel composite switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220469215.4U CN202749831U (en) | 2012-09-15 | 2012-09-15 | Novel composite switch |
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| CN202749831U true CN202749831U (en) | 2013-02-20 |
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| CN201220469215.4U Expired - Fee Related CN202749831U (en) | 2012-09-15 | 2012-09-15 | Novel composite switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730962A (en) * | 2014-01-21 | 2014-04-16 | 成都星宇节能技术股份有限公司 | ZigBee compound switch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730962A (en) * | 2014-01-21 | 2014-04-16 | 成都星宇节能技术股份有限公司 | ZigBee compound switch |
| CN103730962B (en) * | 2014-01-21 | 2016-10-05 | 成都星宇节能技术股份有限公司 | ZigBee combination switch |
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Granted publication date: 20130220 Termination date: 20130915 |