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Features
Optimized design scheme
The PCS-9700 system is considered for various functions of protection, local supervisory, control, reactive power and voltage regulation, interlocking, selective ground fault protection of an ineffectively grounded system, as well as management of equipments, operations and information of protection and fault recorder information, etc.Powerful and flexible communication facilities
The station bus uses 100M Ethernet while the bay level uses dual 100M Ethernet as redundancy. A powerful communication platform is thus formed by these facilities together with network communication equipment such as 100Mbps Switches and gateways. The process bus uses redundant Gigabit or 100M Ethernet based on optical fiber. It will guarantee the real-time transmission of important information, such as tripping/closing commands.
The system uses IEC 60870-5-103 standard protocol for communication with protection relays and other IEDs. The RCS-9794A/B communication unit of multiple CPU structure is equipped as protocol converter. It provides various standard ports and the system can be connected with equipments made by other manufactures. So the user has the flexibility to select various kinds of products.Open HMI software in substation level
The software of the system is developed based upon Windows and UNIX operation system. SQL server (companied with Windows) or ORACLE (companied with UNIX) is selected as the database management software. Based on softbus and network technology, Software package is an open system which greatly enhances the availability of internal information of the whole station.Direct data transmission to control center
Functions of external communication and internal communication are independent to each other. Information can be acquired directly from bay level and transmitted to dispatching centers. Communication bottleneck problem of the traditional RTU scheme can be solved so that reliability of information transmission can be greatly enhanced in PCS-9700 system.Object-oriented information structure
The information structure is object-oriented. Each logic devices in database is associated with a physical device. Influence of single item change is limited in related part of corresponding logic device only. It is thus easy to be extended. Attribution of information is self-described. It supports on-line configuration and real-time check functions of the equipment.Secure and reliable bay control unit
The bay control unit is based on 32 bits CPU and DSP hardware platform. It adopts real-time multitasks operation system with powerful processing ability and well suits the requirements of data acquisition and processing of bay level.
