Beijing Sifang CSC-298 Digital PT Protection and Control Device

1 Device Introduction

Primarily used for the protection and control of busbars or incoming line PTs in power plants at 6kV and below voltage levels, it can be installed locally in switchgear.

1.2 Main Functions and Technical Parameters

1.2.1 Protection Functions

1. PT disconnection alarm

2. Zero-sequence overvoltage

3. Busbar overvoltage

4. Undervoltage protection

5. Digital input protection

1.2.2 Measurement and Control Functions

1. 15 channels of digital input telemetry collection, device telemetry status change, accident telemetry

2. Telemetry of analog quantities such as Ua, Ub, Uc, Uab1, Ubc1, Uca1, U0, Uab2, Ubc2, Uca2

3. Various event SOE, etc. 

1.2 Main Features of the Device
The device has the following features:
a) Utilizes an embedded 32-bit microprocessor and a 14-bit data acquisition system, providing strong data processing capabilities;
b) Flexible programmable protection and control logic functions, enabling graphical editing of protection and control schemes to meet personalized needs;
c) Features virtual testing functions, enabling automatic telemetry point verification, automatic SOE event triggering, fault simulation, and online simulation of control schemes;
d) Provides communication interfaces based on optical Ethernet, LonWorks fieldbus, and optical 485, with an integrated rich protocol library, offering comprehensive networking solutions for users;
e) Comprehensive recording of equipment operation information and fault information, providing ample data for operation optimization and accident analysis;
f) A high-precision metering system completely independent of the protection CPU system, meeting the requirements for operation monitoring and remote automatic meter reading;
g) Comprehensive hardware and software self-test functions and non-adjustable circuit design, making installation and debugging simpler;
h) User-friendly human-machine interface with simple operation, eleven indicator lights showing the device's operating status in real time, and a clear Chinese LCD display;
i) Supports network time synchronization and GPS pulse time synchronization, supports IRIG-B code time synchronization, and includes a hardware clock system;
j) PC-based auxiliary analysis software, easily enabling customization of protection and control logic, accident analysis, virtual testing, and other functions;
k) High-standard electromagnetic compatibility performance, sealed chassis design, meeting the stringent requirements for decentralized installation;
l) Can be centrally grouped in panels or dispersed installed on switchgear or locally installed in outdoor switchyards.