CN202678972U - Reactive compensation and harmonic management integrated controller used for power distribution system of residential area - Google Patents
Reactive compensation and harmonic management integrated controller used for power distribution system of residential area Download PDFInfo
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- CN202678972U CN202678972U CN2012202803909U CN201220280390U CN202678972U CN 202678972 U CN202678972 U CN 202678972U CN 2012202803909 U CN2012202803909 U CN 2012202803909U CN 201220280390 U CN201220280390 U CN 201220280390U CN 202678972 U CN202678972 U CN 202678972U
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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
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- Y02E40/20—Active power filtering [APF]
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Abstract
The utility model relates to a reactive compensation and harmonic management integrated controller used for a power distribution system of a residential area. The reactive compensation and harmonic management integrated controller comprises a microprocessor. A signal input end of the microprocessor is connected with a distribution network voltage and current input circuit; a signal output end of the microprocessor is connected with control switches of parallel capacitance compensators TBB and passive filters LC as well as a trigger circuit of an active power filter APF respectively; and a signal input and output end of the microprocessor is connected with a power carrier communication module, an RS-485 communication module and a GPRS/CDMA module respectively. According to power utilization characteristics of the residential area, the reactive compensation and harmonic management integrated controller can select the switching of proper parallel capacitance compensator TBB branch circuits or passive filter LC branch circuits according to reactive power and filtering requirements so as to control the active power filter APF and make the same to generate current with the same magnitude and opposite direction with those of transiently varied harmonic current of the power distribution system and inject the current into the power distribution system, thereby increasing a power factor and decreasing harmonic current of the power distribution system; and at the same time, the reactive compensation and harmonic management integrated controller has a variety of communication means, thereby facilitating realization interconnection of distribution network automation systems.
Description
Technical field
The utility model relates to a kind of residential quarters distribution system reactive power compensation and harmonic wave control general controller.
Background technology
Along with improving constantly of electricity consumption of resident, especially powerful elevator, blower fan, pump machine and domestic energy-saving light fixture, convertible frequency air-conditioner, the large-scale popularization and application of computer, brought the unfavorable conditions such as power factor is low, harmonic current exceeds standard for the residential quarters distribution system, cause the consequence that system loss is large, electric network pollution is heavy, even threaten residential electricity consumption safety, therefore be necessary to select suitable technological means to be administered.
Main governing measure is installing reactive power compensator or passive filter in distribution system at present.In the distribution system of residential quarters, the day and night gap of reactive power and harmonic current is large, season gap large, and change fast at start-up of power plant with when stopping, and in the middle of existing reactive power compensation and the harmonic treating apparatus, shunt capacitor compensates (TBB) technology maturation, project cost is minimum, the switching time is generally more than 5 seconds, but can't filtering; (LC) is simple in structure for passive filter, and engineering easily realizes, but filter effect relies on electrical network parameter; And Active Power Filter-APF (APF) is limited to the performance of power electronic device though filter effect is good, and capacity is little and cost is high.Also have in the engineering these several governing measure integrated applications, but each device there is controller separately, is difficult to reach the unified coordination of optimizing, also fail to attain the results expected.These several quasi-controllers do not have communication function or RS485 communication only are provided in addition, are difficult to realize interconnected with distribution automation system.
The utility model content
But the purpose of this utility model is to provide a kind of the synchronized Coordinative Control secondary capacitor, passive filter and active filter, has simultaneously residential quarters distribution system reactive power compensation and the harmonic wave control general controller of RS485, GPRS/CDMA and power line carrier communication function.
For achieving the above object, the utility model has adopted following technical scheme: a kind of residential quarters distribution system reactive power compensation and harmonic wave control general controller, comprise microprocessor, its signal input part links to each other with distribution electric current and voltage input circuit, its signal output part links to each other with the control switch of parallel capacitive compensation device TBB, passive filter LC and the circuits for triggering of Active Power Filter-APF APF respectively, and its signal input output end links to each other with power line carrier, PLC module, RS-485 communication module and GPRS/CDMA module respectively.
As shown from the above technical solution, the utility model is for the residential quarters power consumption characteristics, select suitable parallel capacitive compensation device TBB or the passive filter LC branch road of switching according to reactive requirement and filtering requirements, and control electric current with system's transient change harmonic current equal and opposite in direction, opposite direction of Active Power Filter-APF APF generation and inject distribution system, so that the distribution system power factor improves, harmonic current reduces.The utility model had both been brought into play the low price of parallel capacitive compensation device TBB and passive filter LC, simple advantage, had reduced again the capacity of Active Power Filter-APF APF, the scheme that provides high performance-price ratio for reactive power compensation and the harmonic wave control of residential quarters.Simultaneously, the utlity model has communication, be convenient to realize interconnected with distribution automation system.
Description of drawings
Fig. 1 is circuit block diagram of the present utility model.
Embodiment
A kind of residential quarters distribution system reactive power compensation and harmonic wave control general controller, comprise microprocessor 1, its signal input part links to each other with distribution electric current and voltage input circuit 2, its signal output part links to each other with the control switch of parallel capacitive compensation device TBB, passive filter LC and the circuits for triggering of Active Power Filter-APF APF respectively, its signal input output end links to each other with power line carrier, PLC module 3, RS-485 communication module 4 and GPRS/CDMA module 5 respectively, as shown in Figure 1.
As shown in Figure 1, described microprocessor 1 adopts the TMS320F28335 chip, described distribution electric current and voltage input circuit 2 comprises for the Hall element that gathers the distribution network voltage current signal and linking to each other, and Hall element is followed modulate circuit by amplifier and linked to each other with A/D modular converter in the TMS320F28335 chip; The GPIO mouth of TMS320F28335 chip links to each other with the input of the first photoelectrical coupler, and the output of the first photoelectrical coupler links to each other with the control switch of parallel capacitive compensation device TBB, passive filter LC respectively by the first auxiliary relay; The PWM mouth of TMS320F28335 chip links to each other with the input of the second photoelectrical coupler, and the output of the second photoelectrical coupler links to each other with Active Power Filter-APF APF by the second auxiliary relay.
As shown in Figure 1, described power line carrier, PLC module 3 comprises the half-duplex asynchronous modem controller, the I of TMS320F28335 chip
2The C mouth connects the half-duplex asynchronous modem controller, and the half-duplex asynchronous modem controller is by coupled interface circuit and power line coupling; Described RS-485 communication module 4 comprises the SN65LBC184 chip, and the UART1 mouth of TMS320F28335 chip expands to the RS485 communication interface by the SN65LBC184 chip; The UART1 mouth of described TMS320F28335 chip and 5 interconnection of GPRS/CDMA module.The SPI mouth of described TMS320F28335 chip links to each other with FM33256 storage/clock chip, FM33256 storage/clock chip is non-volatile F-RAM storage and real-time timepiece chip, to deposit the operation control setup parameter of TMS320F28335 chip, and for controller provides accurately clock, adopt the spi bus interconnection between FM33256 storage/clock chip and the TMS320F28335 chip.Power module will convert to from the 220V alternating current of power distribution network+5V and+12V two-way direct current, power module is followed modulate circuit to TMS320F28335 chip, amplifier and is provided+the 5V direct current, and power module provides+the 12V direct current to first and second auxiliary relay.
When work, electric current and voltage signal from distribution system directly access Hall element, be transformed into the suitable AC signal of amplitude through Hall element, follow the modulate circuit conditioning by amplifier after, send into the integrated A/D modular converter of TMS320F28335 chip internal; A phase voltage signal after will nursing one's health is simultaneously sent into the CAP mouth of TMS320F28335 chip, is connected into the PLL circuit, the synchronizing signal of the sampling of formation controller and output control; The TMS320F28335 chip carries out operational analysis to the digital signal that sampling obtains, and calculates respectively the control parameters such as real-time reactive power, harmonic current.
Controller uses 16 I/O mouths of TMS320F28335 chip, by 16 the first auxiliary relays of control after the first photoelectric coupler isolation, the delivery outlet access parallel connection outside capacitive compensator TBB of the first auxiliary relay and the control switch of passive filter LC branch road, such as thuristor throw-in and throw-off switch or combination switch, so maximum can be controlled No. 16 capacitor branch roads; Big or small according to the harmonic current that calculates with Time Controller, adjust the output pulse of TMS320F28335 chip internal PWM module, after the second photoelectric coupler isolation, send into the circuits for triggering of Active Power Filter-APF APF, with the switching of the power power electronic device of control Active Power Filter-APF APF, the electric current that makes Active Power Filter-APF APF produce and system's transient change harmonic current equal and opposite in direction, opposite direction injects distribution system.
In a word, the utility model is included parallel capacitive compensation device TBB, passive filter LC and Active Power Filter-APF APF three class device unifications in the power distribution system quality of electric power quality scheme for the residential quarters power consumption characteristics.Controller uses the TMS320F28335 chip, at first gather electric current, voltage, the frequency signal of power distribution network, calculate the First Harmonic Reactive Power of system, in short-term steady harmonic electric current and three parameters of transient change harmonic current, select suitable parallel capacitive compensation device TBB or the passive filter LC branch road of switching according to reactive requirement and filtering requirements, and control electric current with system's transient change harmonic current equal and opposite in direction, opposite direction of Active Power Filter-APF APF generation and inject distribution system, so that the distribution system power factor improves, harmonic current reduces.
The TMS320F28335 chip calculates by the optimization of software, the harmonic wave of preferential input passive filter LC filtering characteristic frequency also improves power factor, to further improve then continuation such as power factor and drop into parallel capacitive compensation device TBB, the remaining low power harmonic current of control APF filtering of Active Power Filter-APF.So both brought into play the low price of parallel capacitive compensation device TBB and passive filter LC, simple advantage, reduced again the capacity of Active Power Filter-APF APF, the scheme that provides high performance-price ratio for reactive power compensation and the harmonic wave control of residential quarters.
Because reactive power compensation and the harmonic treating apparatus of residential quarters all just begin progressively to install after resident family moves in, the general telecommunication cable that does not all have to consider to keep for controlling device, therefore 3 kinds of communication modes are supported in the design of this controller simultaneously, make things convenient for controller access electrical power distribution automatization system.To being reserved with the situation of telecommunication cable, controller can use the RS-485 communication module; To not reserving telecommunication cable, but Meter Reading System in Power Line Carrier Wave is used in the residential quarter, and controller in-built electrical power carrier communication module 3 is forwarded to information on the concentrator of residential quarter distribution system by power line, uploads at last the distribution automatic system of power supply department; In other situation, can use GPRS/CDMA module 5, upload the data to the electrical power distribution automatization system of power supply department by mobile public network.
Claims (5)
1. a residential quarters distribution system is with reactive power compensation and harmonic wave control general controller, it is characterized in that: comprise microprocessor (1), its signal input part links to each other with distribution electric current and voltage input circuit (2), its signal output part links to each other with the control switch of parallel capacitive compensation device TBB, passive filter LC and the circuits for triggering of Active Power Filter-APF APF respectively, and its signal input output end links to each other with power line carrier, PLC module (3), RS-485 communication module (4) and GPRS/CDMA module (5) respectively.
2. residential quarters according to claim 1 distribution system is with reactive power compensation and harmonic wave control general controller, it is characterized in that: described microprocessor (1) adopts the TMS320F28335 chip, described distribution electric current and voltage input circuit (2) comprises for the Hall element that gathers the distribution network voltage current signal and linking to each other, and Hall element is followed modulate circuit by amplifier and linked to each other with A/D modular converter in the TMS320F28335 chip; The GPIO mouth of TMS320F28335 chip links to each other with the input of the first photoelectrical coupler, and the output of the first photoelectrical coupler links to each other with the control switch of parallel capacitive compensation device TBB, passive filter LC respectively by the first auxiliary relay; The PWM mouth of TMS320F28335 chip links to each other with the input of the second photoelectrical coupler, and the output of the second photoelectrical coupler links to each other with Active Power Filter-APF APF by the second auxiliary relay.
3. residential quarters according to claim 2 distribution system is with reactive power compensation and harmonic wave control general controller, and it is characterized in that: described power line carrier, PLC module (3) comprises the half-duplex asynchronous modem controller, the I of TMS320F28335 chip
2The C mouth connects the half-duplex asynchronous modem controller, and the half-duplex asynchronous modem controller is by coupled interface circuit and power line coupling; Described RS-485 communication module (4) comprises the SN65LBC184 chip, and the UART1 mouth of TMS320F28335 chip expands to the RS485 communication interface by the SN65LBC184 chip; The UART1 mouth of described TMS320F28335 chip and GPRS/CDMA module (5) interconnection.
4. residential quarters according to claim 2 distribution system is with reactive power compensation and harmonic wave control general controller, and it is characterized in that: the SPI mouth of described TMS320F28335 chip links to each other with FM33256 storage/clock chip.
5. residential quarters according to claim 2 distribution system is with reactive power compensation and harmonic wave control general controller, it is characterized in that: power module is followed modulate circuit to TMS320F28335 chip, amplifier and is provided+the 5V direct current, and power module provides+the 12V direct current to first and second auxiliary relay.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202803909U CN202678972U (en) | 2012-06-14 | 2012-06-14 | Reactive compensation and harmonic management integrated controller used for power distribution system of residential area |
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| CN2012202803909U CN202678972U (en) | 2012-06-14 | 2012-06-14 | Reactive compensation and harmonic management integrated controller used for power distribution system of residential area |
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| CN202678972U true CN202678972U (en) | 2013-01-16 |
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| CN2012202803909U Expired - Lifetime CN202678972U (en) | 2012-06-14 | 2012-06-14 | Reactive compensation and harmonic management integrated controller used for power distribution system of residential area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560583A (en) * | 2013-10-25 | 2014-02-05 | 安徽科大智能电网技术有限公司 | Micro-unit monitor based on DSP |
| CN105356603A (en) * | 2015-11-17 | 2016-02-24 | 昆山帝森克罗德光电技术有限公司 | APF parallel-operation communication system based on power carrier transmission |
-
2012
- 2012-06-14 CN CN2012202803909U patent/CN202678972U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560583A (en) * | 2013-10-25 | 2014-02-05 | 安徽科大智能电网技术有限公司 | Micro-unit monitor based on DSP |
| CN105356603A (en) * | 2015-11-17 | 2016-02-24 | 昆山帝森克罗德光电技术有限公司 | APF parallel-operation communication system based on power carrier transmission |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: KEDA INTELLIGENT ELECTRIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ANHUI CSG SMART GRID TECHNOLOGY CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 230088 No. 5111 Wangjiang West Road, hi tech Zone, Anhui, Hefei Patentee after: KEDA INTELLIGENT ELECTRICAL TECHNOLOGY CO., LTD. Address before: 230088 No. 612-1, Mount Huangshan Road, hi tech Zone, Anhui, Hefei Patentee before: Anhui Science and Technology Institute of China Smart Grid Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |