ST3000 Series Communication Controller

Selection Manual Description

Suzhou Wanlong Electric Group Co., Ltd.

SUZHOU WANLONGELECTRICALGROUP CO.‚LTD

Directory

1.Product overview...2

2.Follow standards and specifications...4

3.product selection...6

3.1Model and Meaning...6

3.2Specification and Code Description...6

4.Product Series Information Sheet...7

5.performance index...9

6.Product Installation Dimensions...9

6.1controllerC13T...9

6.2controllerC14T...10

6.3controllerC42...10

7.Considerations...11

1. Product overview

in this era of networking, digitization, interaction and "low-carbon economy", smart grids, digital power plants, and digital factories are no longer unfamiliar terms for major domestic companies, and they are quietly Changing our work and lifestyle. Suzhou Wanlong Electric Group Co., Ltd. provides intelligent and information-based operation management platforms such as "WKS-ECMS2000 Power Plant Electrical Monitoring and Management System Solution", "WKS-PDMS2000 Power Distribution Room Management System Solution", "WKS-IMCS2000 Motor Integrated Control System Solution" and "WKS-DTMS2000 DC Traction Electrical Monitoring and Management System Solution" are in line with this development need.

ST3000 series communication controller (hereinafter referred to as ST3000) is a product designed by our company for many years for the application characteristics and requirements of "intelligent and information operation management" of electrical equipment in different industries. As the core hub equipment of the "intelligent and information operation management" platform, they play an important role in improving the operation reliability of the "power distribution system", reducing operation and management costs, improving work efficiency, and reducing labor intensity.

adopts ST3000 series products to solve a series of problems such as wide distribution range, large quantity, long transmission distance, large amount of information, inconsistent communication protocol and complex data exchange in intelligent terminal equipment in power distribution system. Through this kind of equipment, the huge power distribution system network is "divided" into independent and interoperable "subnets" to realize the local data collection, data screening, data transmission, protocol conversion and operation management of each intelligent terminal equipment.

ST3000 series products mainly support TCP/IP, Modbus-RTU, DL/T 645, IEC-103 and other fieldbuses and power protocols for spacer layer equipment, which solves the problem of coexistence of multiple communication protocols. At the same time, ST3000 series products mainly support Modbus Server (RTU or TCP), CDT, IEC-104 and so on for station control layer, which solves the problem of dual network interconnection and data sharing of high reliability systems, it is the bridge connecting the field bay layer and the station control layer.

ST3000 series communication controller adopts embedded structure based on Linux platform. The product adopts modular, integrated, low power consumption, no rotating components design, with no fan, small size, low power consumption, stable performance and other outstanding advantages, ensuring the stability and reliability of the equipment is very suitable for unattended system data acquisition, data screening, communication management and protocol conversion functions.

2. Follow standards and specifications

products are mainly in accordance with the following standards and specifications.

GB2887-2011 computer site

JB/T10308.3-2005measurement and control-Fieldbus for use in industrial control systems (Profibus-DP)

GB/T19582-2008 Industrial Automation Network Specification Based on Modbus Protocol

DL451-1991 Cyclic Telecontrol Protocol (Ministerial CDT)

DL/T645-2007 Multi-function Energy Meter Communication Protocol

GB/T 18858.3-2002 Low-voltage switchgear and controlgear controllers-Equipment interface (CDI)-Part 3: DeviceNet

Supporting standard for basic telecontrol tasks of IEC60870-5-101 telecontrol equipment and system

IEC60870-5-103 telecontrol equipment and system relay protection equipment information interface supporting standard

IEC60870-5-104 telecontrol equipment and systems using standard transmission file set IEC60870-5-101 network access

GB4208-2008 enclosure protection class (IP mark)

GB/T 2421-Environmental testing for electric and electronic products-Part 1: General

GB/T 2423.1-2008-Environmental testing for electric and electronic products-Part 2: Test methods-Test A: Low temperature

GB/T 2423.2-2008-Environmental testing for electric and electronic products-Part 2: Test methods-Test B: High temperature

GB/T 2423.9-2001-Environmental testing for electric and electronic products-Part 2: Test methods-Test Cb: Damp heat, constant, for use on equipment

GB/T 16935.1-2008 Insulation coordination for equipment in low-voltage systems-Part 1: Principles, requirements and tests

GB/T 17626.2-2006 Electrostatic discharge immunity test

GB/T 17626.3-2006 Radiated Radio Frequency Electromagnetic Field Immunity Test

GB/T 17626.4-2008 Electrical fast transient burst immunity test

GB/T 17626.5-2008 Surge (Impact) Immunity Test

GB/T 17626.8-2006 Power frequency magnetic field immunity test

GB/T 17626.10-1998 damped oscillating magnetic field immunity test

GB/T 17626.11-2008 Voltage Dags, Short Interruptions and Voltage Variations-Immunity Test

GB/T 17626.12-2013 Ringing Wave Immunity Test

3. Product selection

3.1Model and Meaning

3.2Specification and Code Description

3.2.1 RS485interfaces

Table 1RS485interfaces

3.2.3Controller Category

controller, namely C11A, C12A, C13T, C14T, C42 and C51MC. For specific details, please refer to"Product family information table "chapter.

4. Product series information sheet

Continuation table

5. Performance indicators

reliability index:

analog quantity (voltage, current, power, electric degree, etc.) measurement comprehensive error ≤ 1.5;

data integrity rate ≥ 98%;

remote control and remote adjustment shall be ≥ 99.99%;

Telemetry and remote signaling display accuracy ≥ 99.99%;

system ≥ 99.5%.

Real-time index (number of substations≤ 40 ):

The important information time of the master station inspection intelligent terminal shall be ≤ 2s;

system control operation ≤ 2s;

Telemetry and remote signaling information transmission time ≤ 3s;

event SOE resolution ≤ 1ms;

screen call response time ≤ 1s;

historical data application browsing response time ≤ 10s.

6. Product installation dimensions

products only list the panel dimensions and opening dimensions of rack-mounted controllers, as follows:

6.1 controller C13T

6.2 controller C14T

6.3 controller C42

7. Precautions

in the long-term power automation system project implementation process, found that the following points are easy to be ignored, now listed as follows for reference.

1, according to the actual needs of the project and the system cost of comprehensive consideration of the system network structure and bus type. At present, the bus protocols commonly used in domestic power automation systems are:

50. RS485 Modbus-RTUbus
    • advantages: the protocol is simple, the cost is low, most manufacturers can supply, the actual communication distance using Class A shielded twisted pair can reach 1km (theoretical value 1.2km), when the communication distance is greater than 1km, the distance can be extended by adding repeaters or using photoelectric conversion modules (RS485 to optical interface).
    • Disadvantages: the communication rate is not high, the baud rate is generally less than 100kbps, and the baud rate is usually 19.2kbps.

2. After determining the system bus type, it is necessary to clarify the interface specification of intelligent protection measurement and control equipment in the system:

50. must be clear (e. g. Modbus RTU ≥ 19.2kbps, Profibus-DP ≥ 1.5Mbps)
50. communication (e. g. Modbus RTU requires device typical response time ≤ 50ms at 9.6kbps)
50. interface type: RS485, TCP, etc
50. bus connection mode: usually there are terminals, DB9 plug, RJ45 plug and so on

3and field bus network. In order to ensure the long-term stable operation of the communication system, the connection of communication cables in the distribution cabinet must be clearly defined:

1. Communication cable wiring must be far away from the strong current cable, avoid parallel with the strong current cable;
2. communication cable, and it is best to have breakpoints only at the bus connection device;
3. The shielding ground of communication cable in the system must be reliably grounded at a single point;
   4. system communication medium usually uses two kinds of twisted pair and optical cable.

1. twisted pair is convenient for construction and maintenance. Due to the classification of twisted pair too much, various types of quality and price gap is also very large, due to the high temperature distribution cabinet and interference intensity, so it is recommended to use Class A shielded twisted pair, its technical parameters are as follows:
2. the anti-interference ability of optical cable is strong, but the construction and maintenance are relatively cumbersome. Optical cable according to the need to choose single mode or multimode.