1.Foreword
Way with the radio remote data collection, monitoring and control, as opposed to set up special cable (or cable), rental of telecommunication lines, etc., with low cost, quick construction, reliable operation, easy maintenance and so on.
SCADA Series of Shenzhen Sinosun Technology Co., Ltd. use digital signal processing, error correction coding, software radio, digital modem and an integrated design, surface mount technology, high performance, high reliability and strong anti-interference characteristics, provides a standard radioRS232 data interface directly with the computer, RTU, PLC, GPS receivers, digital cameras, data terminals and other connections, transfer rates up to 19200bps, BER less than 10E-6 (reception level-110dBm), the transmit power 0.5-25tile can be adjusted, any model can be set to master station or remote station use, transit-free communication distance of 50 km, able to adapt to the harsh indoor or outdoor environment.Radio data and voice compatible, can work in simplex, half duplex, time division duplex TDD, full-duplex mode, receive the same frequency or different frequency transit network, and with remote diagnostics, testing, regulatory functions, or meet the needs of industry dispatchcontrol center and many remote stations for data acquisition and control.
Control systems need to create the signal input and output channels, this is the I / O. The DCS I / O is usually modular, an I / O modules on one or more I / O channel, used to connect sensors and actuators (valves). Many domestic automation company providing I / O or RTU, such as EVOC, Kunlun Coast, Sim Hong, Advantech and so on.
System Architecture
Power rural power SCADA / distribution automation
Central dispatch station located in the building power supply bureau, radio RS-232 data port directly connected to SCADA system communication front-end; outside the station for the Office in the substation, switchgear, transformers, radio connection RTU / FTU. System uses polling or CDT work, transmission rate 19200bps. Central station radio can be prepared hot standby switch automatically.
Automatic recovery system, power companies
As Shenzhen Sinosunradio small, rugged, reliable, working temperature range (-30 ~ +60 0c), the outdoor work, making it suitable for distribution automation data communications network, in the distribution network has been widely application. CLP Power Hong Kong's distribution automation project using the 400 sets of WDS 4310 data radio. Stable and reliable. China Dalian Electric Power Bureau, Yancheng, Jiangsu Electric Power, Weifang, Shandong Electric Power Distribution Automation project using Shenzhen Sinosun digital radio.
Wireless Electric Distribution Managemen
Wireless remote meter reading
Multi-function wireless remote meter reading system, transformer station table and wireless data communication system, etc., the system works as a point or point-group network communication, the general time-sharing polling addressing, the address isthree-phase multi-function meter number or other meter table table number.
Wireless communication systems: (1) the use of advanced wireless data modem technology, with flexible functionality and versatility, convenient interface, the signal indicator in line with our network of radio management committee requirements.(2) selection of SRRC planning specific frequency, this band has a strong radio wave diffraction capabilities, set up convenient.(3) can use different networking, point to point or point-group network communication, rational use of spectrum resources, the system cost low, cost-effective.
Radio communication is mainly used for electric power wireless meter reading, remote power load on the controller, station transformer to the table, three-phase multi-function table, table and other meter data crossing the wireless meter reading and programming, timing control.In order to ensure adequate communication distance, the radio transceiver antenna height should be set as high as possible, in an ideal communication conditions, the communication distance of about 50Km, the system topology is as follows:
This system, compared with wired networks, with network construction, low cost, short construction period, low maintenance, strong resilience, no occupation of cultivated land, no search line maintenance, not vandalism, and easy data transfer and so on.
Preliminary estimates to build a similar system, and the overhead open wire or cable, fiber optic cable investment compared to the initial construction, when the open air more than 0.8 km, cable more than 0.5 kilometers, the system is absolutely the economy, especially set up or data communication more difficultfar, the more points a long time, more show excellent cost performance, which saves set up open wire cable equipment and labor costs, and reduced maintenance staff strength and the power of local data accurately and timely transmitted to the power managementdepartment.
Wireless meter reading system using electric power for the rational allocation, monitoring and control power consumption to provide a scientific basis for management.
Scheduling / distribution automation communication system data acquisition
Dispatching and distribution automation systems set distribution data acquisition / control, regulation and management, feeder automation (fault location, isolation, non-fault-zone automatic restoration of electricity) and other functions. With the region's business needs, site distribution and geographical environment more complex, difficult to set up the actual situation of the data channel, Power Supply Bureau to consider building a high-speed data radio and on-site master device Communication Network, so not only can reduce system design / the difficulty of construction, but also have job stability, less maintenance and so on. Wireless data communication network throughout the system served an important role in data transmission, which, the choice of digital radio is the top priority of the entire wireless data network, high reliability, high-speed, long distance, networking and expansion flexible must be considered. Shenzhen Sinosun radio station in the country's power distribution automation system has many examples of application, particularly suitable for the formation of a dedicated wireless data communication network, through this network, data and control commands can work from the main station and the various field devices between the master station collected data can be further provided to the MIS system.
Cover the entire wireless data communication system, including scheduling / distribution automation master station and several substations, field devices, is based on the RS-232 serial communication of a multipoint network structure. Monitoring center is located in Power Supply Bureau office buildings, master antenna system mounted on a communications tower, the sub-station antennas are placed according to actual conditions or high roof. Digital radio set a per-site, are connected to the master data collection stations and sub-station RTU / FTU, etc., using a pair of frequency control center and sub-stations in the form of a wireless connection with, the polled communication. Operating data reported to the sub-station and control data acquisition station downlink commands are done via wireless.
Sending and receiving radio waves between the radio through the radio antenna in the air transmission. In order to ensure stable and reliable signal transmission, radio station based on the actual situation of application projects, the erection of the antenna height and type selection with specific requirements. Master antenna omnidirectional antenna is generally used to cover all directions in the distribution sub-station. Sub-station antenna directional antenna is generally used, on the main station, if the sub-station from the main station from the more recent, such as 5 kilometers, the terrain is relatively good, then you can use simple vehicle sub-station antenna. Assumption is open unobstructed terrain, antenna height can be set up by the formula: D = 4.12 × (√ 100 + √ 4) .
Radio Specifications
Shenzhen Sinosun digital radio for the I / O module or between the RTU and the host computer to provide reliable two-way high-speed transparent transmission channel, radio with power antenna, feeder lines, surge arresters (antenna mount in the outdoors). And the corresponding radio equipment, according to the topography and grade of communication range and application requirements, there are several models to choose from.
The technical indicators are as follows:
WDS2710 type radio
Frequency: Shenzhen Sinosun SCADA series radio can work in all available frequency bands, including 130 ~ 174M
Hz (WDS1710 type) / 220 ~ 240MHz (WDS2710 type) / 330 ~ 512MHz (WDS4710 type) / 800 ~ 960 MHz (WDS9710 type) / 2.4 ~ 2.4835 GHz
(WDS 24810 type).
1.2, transfer rate: 19200bps.
1.3, work: support simplex, half duplex, etc., voice and data compatibility, provide intercom calls.
1.4, transmission distance: 50 km (open non-stop).
1.5, the physical interface: standard RS-232, communication speed can be adjustable from 300 to 38400bps, fully transparent transmission, no special communications software.
1.6, system architecture: Support for point to point, multipoint transmission, a multi-level transit network.
1.7, Modulation: CPFSK.
1.8, channel spacing: 12.5KHz/25KHz.
1.9 Transmit Power: 100mW ~ 5W continuously adjustable, useful 25 watts transmit power option.
1.10, error sensitivity:-111dBm or more (bit error rate BER ≤ 10E-6).
1.11, send and receive conversion time: 3ms.
1.12, Sleep current: less than 18mA.
1.13, frequency stability: ± 1.5ppm.
1.14, status and error indication: LED status indication, including power, carrier, transmitting data, receiving data and a variety of fault alarm.
1.15, short-circuit protection: Yes.
1.16, operating temperature: -30 ℃ ~ +60 ℃, at work: -40 ℃ ~ +70 ℃.
1.17, relative humidity: 95%, 40 ℃, non-condensing.
1.18, power supply: the radio work when the voltage is 10.5 ~ 16VDC, emission current of 1.5A, receive current of 125mA. Work with switching power supply 220VAC.
1.19, Size: 5.08 * 14.29 * 18.4CM.
1.20, weight: about 1 kg.
1.21, free radio parameters, diagnostic setting software.
1.22, remote diagnostics network management functions.
WDS 2510-type radio
2.1, frequency: Shenzhen Sinosun DATA series radio can work in 130 ~ 174MHz (WDS 1510-type) / 22 0 ~ 240MHz (WDS 2510-based) / 330 ~ 512MHz (WDS 4510 type) normal band.
2.2, transfer rate: 9600bps.
2.3, work: support simplex, half duplex, etc..
2.4, distance: 30 km (open non-stop).
2.5, the physical interface: standard RS-232, communication speed can be adjustable from 300 to 38400bps, fully transparent transmission, no special communications software.
2.6, system architecture: Support for point to point, multipoint transmission, a multi-level transit network.
2.7, Modulation: 4 CPFSK.
2.8, channel spacing: 12.5KHz.
2.9, transmit power: 100mW, 1W, 2W adjustable, useful 25 watts transmit power option.
2.10, error sensitivity:-108dBm or more (bit error rate BER ≤ 10E-6).
2.11, transceiver switching time: less than 15ms.
2.12, Sleep current: less than 18mA.
2.13, frequency stability: ± 1.5ppm.
2.14, status and error indication: LED status indication, including power, carrier, transmitting data, receiving data and a variety of fault alarm.
2.15, short-circuit protection: Yes.
2.16, operating temperature: -30 ℃ ~ +60 ℃, at work: -40 ℃ ~ +70 ℃.
2.17, relative humidity: 95%, 40 ℃, non-condensing.
2.18, power supply: the radio work when the voltage is 10.5 ~ 30VDC, emission current of 575mA (2W power, 13.8VDC), receive current of 75mA. Work with switching power supply 220VAC.
2.19, free radio parameters, diagnostic setting software.
2.20, Dimensions:
Integrated board products: 110 * 19 * 95.
The whole product: 165 * 44 * 120.
2.21, weight:
Integrated board products: about 0.13KG.
The whole product: about 0.45KG.
Switching Power Supply (Taiwan Ming Wei)
3.1, 3.1.1 environmental conditions, operating temperature: -20 ℃ ~ +55 ℃ 3.1.2, storage temperature: -40 ℃ ~ +80 ℃ 3.1.3, relative humidity: 5% ~ 95% 3.1.4, altitude : ≤ 3000m3.1.5, atmospheric pressure: 70 ~ 106KPa3.1.6, cooling: natural heat conduction
3.2 Input Characteristics
3.2.1, input rated voltage: 220Vac
3.2.2 Input voltage range: 165Vac ~ 285Vac
3.3, the output electrical characteristics
3.3.1, output rated DC voltage: +13.8 Vdc
3.3.2, the output current range: +13.8 Vdc / 0A ~ 6A
3.3.3, regulation accuracy: ≤ ± 2%
3.3.4, load regulation: ≤ ± 2%
3.3.5, the source regulation: ≤ ± 1%
3.3.6 Output ripple: +13.8 Vdc / ≤ 100mV
Master omnidirectional antenna (Guangdong Guanhua)
Frequency range: 220 ~ 290MHz
Bandwidth: 9MHz
Gain: 8.5dBi
VSWR: ≤ 1.5
Nominal impedance: 50Ω
Polarization: Vertical
Maximum Power: 150W
Connector: SL16 or N Block
Vertical Beamwidth: 14.5 °
Length: 4.4m
Weight: 3.5kg
Wind Velocity: 60m / s
Note: FRP was divided into two sections.
Directional antenna from the station (Guangdong Guanhua)
Frequency range: 220 ~ 290MHz
Bandwidth: 16MHz
Gain: 9dBi
VSWR: ≤ 1.5
Nominal impedance: 50Ω
Polarization: vertical or horizontal
Maximum power: 100W
Connector: SL16 or N Block
Beamwidth: E face: 48 ° H plane: 54 °
Ratio: ≥ 14dB
Length: 1m
Weight: 2kg
Wind Velocity: 60m / s
Slave simple antenna (Guangdong Guanhua)
Frequency range: 220 ~ 290MHz
Bandwidth: 9MHz
Gain: 3.5dBi
VSWR: ≤ 1.5
Nominal impedance: 50Ω
Polarization: Vertical
Maximum power: 100W
Connector: the first leads to the cable specified by the user
Length: 80cm
Weight: 120g
Note: Block Antenna with M110 or other large magnet.
Feeder (Zhuhai Hamilton Sundstrand)
Arrester (For outdoor antenna mount)
Model: CA-23RS
Main parameters: Frequency range: DC ~ 2500MHz
VSWR:
Nominal impedance: 50Ω
Connector: N-J
Peak power: 200W
Discharge start voltage: DC230V
Insertion loss: 0.1dB
Dimensions: 74 × 4.25 × 20 (mm)
Weight: 100g
Device configuration and reference price
1, the main station
Including:
A, radio (WDS2710 type, 5W, 9.6/19.2Kbps)
B, dedicated communication power (Taiwan-P050-1BG-type, 13.8VDC/4A)
C, omni-directional antenna (Guangdong production TQJ-230C Type)
D, feeder (Guangdong middle-7DFb type, low loss)
E, lightning arrester (Japan type diamond producing CA-23RP)
2, sub-station
Including:
A, radio (WDS2710 type, 5W, 9.6/19.2Kbps)
B, dedicated communication power (Taiwan-P050-1BG-type, 13.8VDC/4A)
C, directional antennas (TDJ-230Y Guangdong production type)
D, feeder (Guangdong middle-7DFb type, low loss)
E, lightning arrester (Japan type diamond producing CA-23RP)
