Intelligent power distribution system design _506

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Intelligent Power Distribution System

Discrete components of intelligent systems. PS416 communication strong. Transparent data exchange interface, a strong expansion. NET module and the CPU it can take 30 PLC or remote module EM4. At the same time from the station and the remote module can be equipped with local expansion module LE4. PS416 complex network structure through data collection, control and adjustment process, transmit and process data, print records, priority alarm. In this system, using the local expansion module expansion LFA input and output point of capacity. NET using a network card extended network Zi Lu 400. Bus system uses SuconetK. All modules are installed in a dedicated low-voltage switch cabinet module interior. 5.3 meter multi-function network can be Muller's Intelligent detection module MACHART, Socomec company DIRISAp grid monitoring and management system, Jia Automation's WM2-96 modular Power Analyzer and other products to replace conventional instruments. The program selection, multi-function network instrument used Socomec company DIRISAp. Main features are: March 2003 Jiang Jinsong intelligent power distribution system design l3 (1) multi-parameter measuring three-phase current, voltage, active power, reactive power, apparent power, active power level, VAR, power factor, time measurement, phase sequence check, wave and other electrical parameters Kawasaki variability; (2) optional modules: communication interface RS485, alarm output or monitoring / control (remote communication / remote control) and other 6 modules. 5.4 monitoring of OLTC OLTC transformer tap controller and temperature controller has automatic and manual status. OLTC transformer during normal operation temperature controller for automatic state, automatic control of dry-type transformers fan start and stop. OLTC tap the controller during normal operation for the manual mode, you can adjust the load voltage regulation control center tap position. OLTC transformer the transformer to the control center to open fan stop status signal (transformer 6 per node), start and stop fan signal, over temperature alarm, over temperature trip signal, on-load tap tap node status signals (7 nodes per transformer), turn to turn short-circuit trip signal. 5.5 pairs of low-voltage capacitor compensation intelligent power distribution system monitor screen the plant from the total screen distribution substation multi-functional network access to the paragraphs on the instrument DIRISAp bus power factor values, the screen automatically switching the capacitor compensation . Group of switching frequency and duration of the recording, the capacity of the capacitor to the same switching time and frequency for the uniformity of distribution. 5.6 pairs of low-voltage control cabinet feed circuit breaker control switch on the framework of the division and state, overload, to the closing signal, ground trip, overload trip signal long delay, short delay trip signal short-circuit, short circuit instantaneous trip signal. Molded Case Circuit Breaker control switch on the division and state, time-lapse trip signal overload, short circuit trip signal short delay, instantaneous short-circuit trip signal. All remote control circuit breaker can open and close. 6 system software functional system configuration using a dedicated software as a development platform, complete the electrical data and switch status of the collection, both police and accident records, statistical reports and many other features. The software has a unique distributed client / server architecture, users of all levels in the enterprise can easily access real-time process information. The system also includes a large number of graphical tools, based on the development system in this quick and easy, it provides powerful features including real-time process monitoring, warning and alarm handling, control, real-time and historical trends. And a friendly and flexible user interface. 7 7.1 low-voltage distribution system features high reliability, the system itself due to a variety of control systems, but also automatic fault handling, system reliability has been guaranteed. Intelligent power distribution system also has multiple interlock, such as the Sec bus into the line of switches, contact switches between the interlocking, both hardware interlock through contacts in the PLC program has software interlock, monitor host There are also software interlock. 7.2 The system is workable in the control center, field station, work-site operation. 7.3 to ensure continuous and reliable power supply in the system power-down, the system automatically emergency, an alarm signal to alert operating staff. 7.4 scalability by modifying the PLC program can be changed without replacing components do not change the case of lines or change the power distribution system performance. After connecting with other systems or expand the system, just an extension of the bus, expansion modules and a corresponding increase in either program. 8 Conclusion proved by engineering, intelligent power distribution system is a mature and reliable system. It applies not only to industrial enterprises, and used in modern buildings, and through communication interface into the building automation system (BAS). Mouth
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