PSL641UX line protection device of Guodian Nanzi microcomputer integrated protection system
1 Overview
1.1 Scope of application
The PSL 641UX line protection measurement and control device takes current and voltage protection as the basic configuration, and integrates various measurement and control functions. It is applicable to power distribution lines with voltage levels of 66kV and below. The application fields cover power, water conservancy, transportation, petroleum, chemical, coal, metallurgy and other industries.
1.2 Protection function configuration
a、 Three section compound voltage directional blocking overcurrent
b、 Two segment directional zero sequence protection and zero sequence alarm
c、 Overcurrent acceleration protection and zero sequence acceleration protection
d、 Overload protection (alarm or tripping optional)
e、 Low cycle load shedding function
f、 Low voltage load shedding function
g、 Three phase reclosing function;
h、 Small current grounding line selection function
i. TV disconnection judgment
1.3 Measurement and control function configuration
a、 Current, voltage, power, power factor and other measurements
b. 14 channels of external switching value input remote signal acquisition (larger 20 channels are optional)
c、 Circuit breaker position, manual opening and accident remote signaling
d、 Remote opening and closing of normal circuit breaker
e. GPS time synchronization input
1.2 Main features
Rich resources and complete functions: high-precision real-time clock system, supporting RS485 IRIG-B GPS time synchronization; Flexible networking mode and protocol configuration; It can provide complete protection, measurement and control functions. Mature technology and high reliability: apply the high voltage protection technology and idea of Guodian Nanzi International to low voltage protection, with advanced and reliable protection principle and stronger professionalism; The EMC level of product hardware meets the national standard. Flexible configuration and strong pertinence: the device plug-in configuration is simple and easy to use, and the outlet can be flexibly configured, which facilitates various application requirements on the site; Fully consider the characteristics of iron and steel metallurgical enterprises. Powerful communication and integrated recording: provide dual Ethernet communication ports or dual RS-485 communication ports, support IEC60870-5-103 communication protocol and IEC61850 communication protocol (optional); It can query at least 100 trip records, 200 self inspection records, and later 200 switching value and state displacement records, and record the device operation information in an integrated way; It can record 8~100 reports and displacement mark sets.
PSL641UX line protection device of Guodian Nanzi microcomputer integrated protection system
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