CN203352180U - User side low-voltage reactive power compensation device - Google Patents
User side low-voltage reactive power compensation device Download PDFInfo
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- CN203352180U CN203352180U CN 201320214413 CN201320214413U CN203352180U CN 203352180 U CN203352180 U CN 203352180U CN 201320214413 CN201320214413 CN 201320214413 CN 201320214413 U CN201320214413 U CN 201320214413U CN 203352180 U CN203352180 U CN 203352180U
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- voltage reactive
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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
Abstract
The utility model provides a user side low-voltage reactive power compensation device, which is arranged between a main station and medium-low-voltage grid primary equipment and comprises a dual-core processor, a collector, a state quantity measurer, a video converter and a mass-storage device, wherein the dual-core processor after connected with the mass-memory device respectively communicates with the collector, the state quantity measurer and the video converter through buses, and the dual-core processor is connected with a capacitor group of a medium-low-voltage grid through buses. The user side low-voltage reactive power compensation device can be configured flexibly. Through combination of different-type plate components, a conventional low-voltage reactive power compensation device and a multifunctional user side low-voltage reactive power compensation device can be realized.
Description
Technical field
The utility model belongs to field of power, is specifically related to a kind of user side low-voltage reactive compensator capable.
Background technology
In existing Medial & Low Voltage Power Network, the electric energy quality monitoring control system generally consists of electric energy quality monitoring main website, electric energy quality monitoring control system, the control of reactive power compensating terminal and related communication channel, as shown in Figure 1.The communication channel of electric energy quality monitoring control system can merge with the electrical power distribution automatization system communication channel sometimes.In the on-line monitoring system of electric power system, generally by on-line monitoring transducer, on-line monitoring terminal, on-line monitoring system server and related communication channel, formed.
In above-mentioned, the reactive power/voltage control of electric power system is the important step that guarantees the normal operation of modern power systems, and the reactive power source in the regulation and control electrical network, make reactive power distribution reasonable, guarantee reactive layered partition balancing, realize the target that grid line loss reduces, quality of voltage is qualified, voltage stability improves.Its reactive power compensation control terminal, can support the use with each model electric capacity, realizes the distribution reactive power automatically and passive compensation, to improving distribution network electric energy quality, to reduce line loss significant.The function of reactive power compensation control terminal meets the requirement of DL/T597-1996 " Low-voltage controller order technical conditions " and JB/T9663-1999 " low-voltage reactive power automatic compensation controller ".
Applying more Reactive Compensation Mode at Medial & Low Voltage Power Network is low pressure centralized compensation mode, can drop into according to the fluctuation of customer charge level the capacitor of right quantity and follow the tracks of compensation, generally at the first-class place's application of the shaft tower of step down side, overhead transmission line compensation arrangement, realize idle control.This compensation way can improve dedicated transformer user's power factor, realizes the in-situ balancing of reactive power, further reduces the electric energy loss of Medial & Low Voltage Power Network and transformer, thereby guarantees user's voltage levvl.Wherein, in order to obtain on-the-spot power equipment real time information, need to increase at the scene online monitoring terminal and video monitoring equipment, i.e. status of electric power video monitoring terminal.
In order to improve working site fail safe and actual effect, video monitoring has been widely used in the places such as transformer station at present, but due to the existence conditions restriction, the capital equipment of the Medial & Low Voltage Power Network such as distribution transformer, power circuit can not carry out monitoring remote video, and this has caused certain obstacle to power equipment safety and accident potential's investigation.
The utility model content
For the deficiencies in the prior art, the utility model proposes a kind of user side low-voltage reactive compensator capable, overcome the problem that existing user side no-power compensation function disperses, improved the status of electric power monitoring capacity, and improved power equipment safety accident potential investigation level.
A kind of user side low-voltage reactive compensator capable that the utility model provides, its improvements are, described low-voltage reactive compensator capable is arranged between main website and Medial & Low Voltage Power Network primary equipment, and it comprises dual core processor, collector, quantity of state measuring appliance, video converter and mass-memory unit;
Described dual core processor with by bus, with described collector, described quantity of state measuring appliance, with described video converter, communicate by letter respectively after described mass-memory unit is connected;
Described dual core processor is connected with the capacitor group of Medial & Low Voltage Power Network by described bus.
Wherein, described dual core processor comprises ARM kernel and DSP kernel;
Described ARM kernel and described DSP kernel are integrated on one chip.
Wherein, described low-voltage reactive compensator capable comprises the human-computer interaction device;
Described human-computer interaction device is connected with described dual core processor.
Wherein, described dual core processor comprises any one or more of input/output interface able to programme, I/O interface, Ethernet interface, video interface, audio interface and USB serial ports.
Wherein, described collector comprises data acquisition unit ADC0809 or voltage/current transducer.
Wherein, described quantity of state measuring appliance comprises light even summation bus driver chip.
Wherein, described mass-memory unit is portable hard drive, and capacity can need configuration according to on-site supervision, can configure the hard disk that is greater than the 1TB capacity.
Wherein, described bus is iic bus.
Wherein, described bus is spi bus.
Wherein, the model of described dual core processor is DAVINCI TMS320DM6446.
Compared with the prior art, the beneficial effects of the utility model are:
The several functions such as the utility model is monitored in real time by increase video in conventional reactive power compensator, large capacity storage, high-speed communication, can effectively overcome the above problems, thereby improve the status of electric power monitoring capacity, improve power equipment safety accident potential investigation level.
The utility model can be according to the field requirement flexible configuration.By the combination of dissimilar plate parts, can realize that the legacy user holds low-voltage reactive compensator capable, also can realize multi-functional user side low-voltage reactive compensator capable.
The utility model is by the unified consideration of the equipment such as user's side reactive compensation controlling device of Medial & Low Voltage Power Network, main apparatus video monitoring apparatus, realize integrated design, realize multi-functional user side low-voltage reactive compensator capable, this will make, and the device overall structure is compacter, device enforcement volume is less; Reduce equipment investment and Installation and Debugging workload, improve cost performance; The simplification device secondary connection, save and control and signal cable; Increasing, to the Medial & Low Voltage Power Network master device monitors, also can make the power equipment safety and reliability; Thereby in raising Medial & Low Voltage Power Network reliability of operation and efficiency, improve power supply quality, reduce labour intensity, shorten the aspects such as interruption duration and minimizing power failure area, for electric power system is brought considerable economic benefit and social benefit.
The accompanying drawing explanation
Fig. 1 is traditional electric energy quality monitoring composition of the control system schematic diagram.
The electric energy quality monitoring control system schematic diagram that Fig. 2 provides for the utility model.
The structural representation of the low-voltage reactive compensator capable that Fig. 3 provides for the utility model.
The software block diagram of realizing multi-functional user side low-voltage reactive compensator capable that Fig. 4 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
A kind of user side low-voltage reactive compensator capable that the present embodiment proposes, it is placed between main website and Medial & Low Voltage Power Network primary equipment, forms electric energy quality monitoring system, as shown in Figure 2.In figure, complete the function of status of electric power on-line monitoring terminal, the control of reactive power compensating terminal by multi-functional user side low-voltage reactive compensator capable, and can in local large-capacity storage media, preserve real-time video monitoring information for the safe mass accident analysis.
The low-voltage reactive compensator capable of the present embodiment, its structure as shown in Figure 3, mainly comprises dual core processor, collector, quantity of state measuring appliance, video converter and mass-memory unit; Dual core processor receives respectively the quantity of state of the voltage and current signal of the Medial & Low Voltage Power Network primary equipment that collector gathers, Medial & Low Voltage Power Network primary equipment that the quantity of state measuring appliance gathers and the digital video of video converter conversion, carry out passing to distribution network master station after the data processing, and the capacitor group of control low voltage electric network, realize reactive power compensation; Corresponding, dual core processor with by spi bus, with collector, quantity of state measuring appliance, with video converter, be connected respectively after mass-memory unit is connected; Dual core processor is connected with the capacitor group of Medial & Low Voltage Power Network by iic bus.
Each device of the low-voltage reactive compensator capable of the present embodiment and corresponding function are as follows:
Collector:
Voltage, current data acquisition and processing to the Medial & Low Voltage Power Network primary equipment have been used for, for the function of status monitoring and idle switching realizes providing the real-time judge foundation.It mainly comprises data acquisition unit ADC0809 or voltage/current sensor.
The quantity of state measuring appliance:
Be used for the quantity of state data acquisition and processing (DAP) of Medial & Low Voltage Power Network primary equipment, access and the processing of state-detection digital data, for state-detection provides digital quantity basis for estimation basis, realized the function such as switching reactive-load compensation equipment as required.It mainly comprises light even summation bus driver chip etc.
Video converter:
It is mainly according to live video monitoring requirement, and the access analog video signal, controlled the video image processing and transferred analog video to digital video by DSP, realizes as required the functions such as switching reactive-load compensation equipment.
Mass-memory unit:
For storing real-time video monitoring information; It can be portable hard drive, and capacity can need configuration according to on-site supervision, can configure the hard disk that is greater than the 1TB capacity.
Dual core processor:
The present embodiment is usingd high speed dual core processor TI DAVINCI TMS320DM6446 as core technology, dual core processor completes the real-time processing of data and logic, completes the functions such as man-machine interface, the communication of distant place host computer, real time video collection computing, large capacity storage.Double-core data processing module CPU is used TI(Texas Instrument) DAVINCI TMS320DM6446.DAVINCI TMS320DM6446 is the dual core processor of the high-speed low-power-consumption of TI release, include ARM core 926EJS-300MHz and DSP core (C64+)-600MHz, comprised the resources such as jumbo program FLASH, input/output interface able to programme, RAM, I/O interface, IIC, SPI, SD, SATA, 10M/100M/1000M Ethernet interface, video interface, audio interface and USB serial ports simultaneously.Two kernels are integrated on one chip, Each performs its own functions, ARM core operation system, mainly complete the non real-time work such as access, the large capacity storage of video monitoring data of task (comprising network interface, serial ports, printing etc.) that all communications on the plate parts are relevant and record ripple, record.
Wherein:
(1) DSP core mainly completes sampling, the calculating of analog quantity, open into read, the judgement of switching logic, idle switching is controlled, the power equipment video monitoring data gathers the real-time tasks such as computing.
Concrete, data sampling has been interrupted by timer by DSP, every cycle 32 points of the general employing of the of ac collection of reactive power compensator.DSP, after every cycle has been sampled, carries out a real time data and calculates.
Data are calculated the FFT adopted based on 32 point samplings and are improved algorithm calculating reactive power compensation related data amount and measure the related data amount: voltage, current sequence components, harmonic amplitude, containing ratio, a harmonic amplitude, containing ratio, voltage fluctuation and flickering etc.While calculating voltage first-harmonic effective value, current first harmonics effective value, phase angle, active power, reactive power, apparent power, power factor, frequency etc.Voltage power-less data result of calculation sends to the ARM side by the double-core internal exchange of data, and the ARM side recorded calculated data, show, and on give main website.Simultaneously, if the calculated data amount participates in idle control action criterion, the calculated data amount is delivered to the respective logic determining program, completed the switching of capacitor by DSP side program after the logic judgement, realizes voltage power-less control.
DSP also completes the video acquisition computing function.DSP can determine whether to carry out video monitoring according to the monitoring strategies of ARM side transmission, DSP obtains on-the-spot electric apparatus monitoring image information in real time by the VPIF video interface, this parallel interface adopts ITU-R BT.656 form to carry out image sampling, DSP adopts nearest-neighbor method to carry out interpolation calculation, generate the digital video frequency flow of the YCBCR of a road 4:2:2, live video stream sends to the ARM side by the double-core internal exchange of data, the ARM side by real-time video according to the strategy arranged, recorded and on give main website.The D1 form that the resolution of video flowing is 720 * 576 pixels, can provide on-the-spot realtime graphic clearly for the remote power monitoring of tools.
(2) ARM core mainly completes from the input of I2C bus keyboard, lcd screen output, Ethernet interface, USB2.0 interface, realizes the large capacity storage of man-machine interaction, communication and USB.
Concrete, ARM core has built multi-functional user side low-voltage reactive compensator capable management platform based on the LINUX real time operating system.Device powers on after the start-up courses such as the loading of complete operation system and initialization, a plurality of task process parallel runnings as shown in Figure 4, real-time amount demonstration, video monitoring, information recording, idle ipsec communication, the video data transmitting parameter that completes multi-functional user side low-voltage reactive compensator capable such as arranges at the management function.
For the ARM kernel side, by the hardware boot, start real time operating system, application initializes.It is guarded task and is judged that whether task is normal by guarding task module on the one hand, abnormal if task occurs, needs to restart abnormal task and shows by the human-computer interaction device; On the other hand, by internal data interactive task module and DSP kernel, carry out exchanges data, and then carry out the data processing and pass through mass storage device stores; If there are improper data, carry out the accident alarming processing and show by the human-computer interaction device.
For the DSP kernel side, first carry out DSP initialization and application initializes.It collects the data of collector and quantity of state measuring appliance on the one hand, carries out the judgement of switching logic, and result is passed to distribution network master station; On the other hand, by the video acquisition field data, carry out data interaction with the ARM kernel after being converted into digital signal, and judge whether to carry out if required switching capacitance to the action of capacitor group according to distribution network master station, realize reactive power compensation.
The internal exchange of data task of the present embodiment completes the data interaction of ARM core and DSP core in dual-core architecture, its major function is to obtain sampling calculated data and the real time video data of DSP side, function different distributions by data passes to other task, accept the control command of communication task or interpersonal interface task simultaneously and pass to the DSP side, comprising video monitoring strategy (i.e. in real time monitoring, monitoring at times or the strategy such as monitoring) as required.
Sampling calculated data and real time video data that data processing task completes DSP are arranged and are stored, the huge real-time video for data volume, the storage policy of assigning according to main website determines when to carry out this locality storage, it is stored in outside mass-memory unit by the SATA interface, can calls for distant place off-line, playback checks.
The calculated data that device accident alert analysis Processing tasks completes DSP is analyzed judgement, completes the functions such as accident alarm.The communication process task completes and the functions such as master station communication, interaction data, reception control command.Between realization and main website, the related communications such as voltage power-less monitoring and improvement, state-detection are counted the mutual of message, realize the real-time monitoring of power equipment.The man-machine interface task completes the human-computer interaction functions such as voltage power-less monitoring and improvement, setting that status detection function is relevant, demonstration.The finger daemon task is carried out Real-Time Monitoring to all the other processes, and the process that can not normally move is restarted and the action such as warning.
The capacitor group of the present embodiment consists of Capacitance parallel connection.Dual core processor is passed to main website after receiving data, main website judges whether to carry out reactive power compensation and how to carry out reactive power compensation according to regional idle information summary, if need, by dual core processor, to working as the ground capacitor group, send control, the input of control capacitor and excision, realize reactive power compensation.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although with reference to above-described embodiment, the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (10)
1. a user side low-voltage reactive compensator capable, it is characterized in that, described low-voltage reactive compensator capable is arranged between main website and Medial & Low Voltage Power Network primary equipment, and it comprises dual core processor, collector, quantity of state measuring appliance, video converter and mass-memory unit;
Described dual core processor with by bus, with described collector, described quantity of state measuring appliance, with described video converter, communicate by letter respectively after described mass-memory unit is connected;
Described dual core processor is connected with the capacitor group of Medial & Low Voltage Power Network by described bus.
2. low-voltage reactive compensator capable as claimed in claim 1, is characterized in that, described dual core processor comprises ARM kernel and DSP kernel;
Described ARM kernel and described DSP kernel are integrated on one chip.
3. low-voltage reactive compensator capable as claimed in claim 2, is characterized in that, described low-voltage reactive compensator capable comprises the human-computer interaction device;
Described human-computer interaction device is connected with described dual core processor.
4. low-voltage reactive compensator capable as claimed in claim 2, is characterized in that, described dual core processor comprises any one or more of input/output interface able to programme, I/O interface, Ethernet interface, video interface, audio interface and USB serial ports.
5. low-voltage reactive compensator capable as claimed in claim 1, is characterized in that, described collector comprises data acquisition unit ADC0809 or voltage/current transducer.
6. low-voltage reactive compensator capable as claimed in claim 1, is characterized in that, described quantity of state measuring appliance comprises light even summation bus driver chip.
7. low-voltage reactive compensator capable as claimed in claim 1, is characterized in that, described mass-memory unit is portable hard drive.
8. low-voltage reactive compensator capable as claimed in claim 1, is characterized in that, described bus is iic bus.
9. low-voltage reactive compensator capable as claimed in claim 1, is characterized in that, described bus is spi bus.
10. low-voltage reactive compensator capable as claimed in claim 1, is characterized in that, the model of described dual core processor is DAVINCI TMS320DM6446.
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| CN 201320214413 CN203352180U (en) | 2013-04-24 | 2013-04-24 | User side low-voltage reactive power compensation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103280815A (en) * | 2013-04-24 | 2013-09-04 | 国家电网公司 | User side low-voltage reactive power compensation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280815A (en) * | 2013-04-24 | 2013-09-04 | 国家电网公司 | User side low-voltage reactive power compensation device |
| CN103280815B (en) * | 2013-04-24 | 2015-08-05 | 国家电网公司 | A kind of user side low-voltage reactive compensator capable |
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