YONGS embedded industrial computer ARK is used in the field of national substation computer background monitoring: substation computer background monitoring is one of the investment priorities in the current reform of the national power system. The substation background monitoring system developed by the power system integrator effectively completes the real-time monitoring of the regional power grid, and can visually check the transformers of each substation and clear the operating status and operating parameters, so that the substation personnel can experience the remote control and safety of the computer in a short time. Reliable punishment for on-site obstruction. The background monitoring hardware field of this system is composed of YONGS industrial computer ARK-5280 industrial control field.
The system needs:
The system needs to be highly reliable and able to operate under relatively insidious conditions for a long time. The substation is usually unattended. If a problem is found, the substation personnel experience the remote control of the computer in a short period of time, and the safe and reliable disposal of the on-site disturbance. Originally, the background monitoring hardware field of this system consists of the ancient IPC industrial computer of YONGS. The situation of the substation (high temperature, dust, electromagnetic, etc.) will lead to the long time of the IPC industrial computer. The discovery of obstructions greatly increased the system's security workload.
YONGS ARK-5280 product features:
A. Because the fan is a weak obstacle under the poisonous environment, the ARK series industrial computer adopts the low power consumption (CM/PM) fanless embedded design, which is stable and high temperature resistant, and greatly improves the mechanical MTTF (balanced and unobstructed time). ).
B. The aluminum alloy casing has few wires inside, and the conduction and heat dissipation make it have excellent sealing performance, which can effectively eliminate the downtime caused by the oxidation effect of dust and corrosive gas on the light conduction point, and reduce the maintenance cost. It is suitable for use in power monitoring points and DCS applications with high dust and temperature changes compared to large unmanned places.
C. With 2 PCI expansion cards, it can easily expand the function, such as the CAN function, etc. with audio output port, providing the alarm control mode is reliable, small in size, easy to install, transport, and protect.
D. The integrated multi-serial port program used by ARK-5280 provides 4 serial ports, no need to go through expansion methods, which can help users save costs, and can be configured as an RS422/RS485 interface with flow control. Its serial port features are as follows:
Accepted serial port chip ADM213 performance target
Output voltage swing ±9V
Instantaneous conversion speed maximum 30V/μs
The conversion speed in the transition area is not less than 5V/μs
It is suitable for RS232 standard interface, the output current is greater than 10mA, and the short-circuit current maximum value is ±60mA.
Transmitter output, output impedance 300Ω
The input voltage of the driver is -0.3V to (Vcc+0.3V), and the output voltage is (V+, +0.3V) to (V-, -0.3V).
Vcc - power supply voltage
The input voltage of the sink is ±30V, and the output voltage is -0.3V to (Vcc+0.3V)
Overvoltage guard
Electrostatic discharge (ESD) protection voltage greater than 2000V
There are guard circuits inside
E. Mechanism modularization plan - after-sale convenience, short MTTR (evenly hindered repair time)
If the system adopts Advantech's fan-free and guard-free embedded industrial computer ARK-5280 to carry out the innovation plan, it can greatly improve the overall performance of the system, and provide 232/422/485 communication pages, unnecessary reuse and application expansion The communication card saves the cost and improves the reliability, and also facilitates the application and protection of the user's on-site building.
Project introduction:
Adopt ELO's flat panel display, ARK5280 industrial computer, 220V AC and DC dual-purpose power supply to supply power to the LCD screen and the host to form a control system, and match the outdoor enclosure to form a substation monitoring system.
The substation site occasionally needs to monitor the building on site, so it integrates a solid ELO LCD display for users. The power supply in the cabinet of other substations is not unified, and the AC and DC 220V power supply is used. However, ARK and All ELO monitors require a solid 24-volt input, so an AC-DC power adapter is integrated into the system. The product has been put on the shelf for easy installation and protection.
System statement:
The communication field composed of YONGS ARK-5280 (communication processing machine), CAN communication web page and RS-485 web page.
The system adopts C language development software, because the RS-485 of YONGS ARK industrial computer has flow control features, which greatly simplifies the programming complexity of communication. Adopting a real-time data collection system, the data collected on site is continuous in time, the data flow is large, and with the increase of collection points, the data flow in the unit time will also increase. Therefore, the system selected Microsoft's SQL Server database as the data storage field. The openness, simplicity and other powerful functions of Microsoft SQL Server provide a way to store large amounts of rapidly occurring data at high speed and store them in a relatively small storage space. It also extends and constructs query language (SQL) to effectively query serial data.
thesis:
YONGS ARK-5280 compact design is a fanless industrial computer, multiple 232/422/485 interfaces and network ports, and has the expansion of 2 PCI slots, as well as convenient placement and many other advantages, to meet the requirements of power customers, in The stable operation of the substation has been well received by users.
With the advancement of the automation system of power grid operation, the overall automation system of substations is playing a more and more important role. Small or unattended substations will become the combined method of substation operation in the future. Human duty is imperative. Only by continuing to fulfill our product management plan can we keep up with the rapid development of the power system, do our bit for the prosperity of the power industry, realize all the intelligent unattended functions of the substation, and create an innovative solution for the power industry. higher efficiency.
