Home Tags POWERGRID_INTERNATIONAL Volume 3 Issue 6
POWERGRID_INTERNATIONAL Volume 3 Issue 6
S&C Series 2000 Circuit Switchers now feature a transformer primary-fault interrupting rating of 25 kA RMS symmetrical. This higher rating has been verified through a battery of interrupting tests performed at KEMA Laboratories. The new rating applies to all Series 2000 Circuit Switchers rated at 69 through 138 kV, operating in the temperature range of -30 C to 40 C. The new, higher rating within the temperature range also applies retroactively to all S&C Series 2000 Circuit Switchers rated 69 t
Cooper Power Systems--Kyle Distribution Switchgear introduces the SyncCap Power Quality Switch. Designed to eliminate switching surges, capacitor-damaging transients and improve power quality, the SyncCap provides synchronous closing when re-energizing the capacitor bank. A dynamic operating mechanism, integral microprocessor-based control, and exclusive closed-loop position-feedback system work together for transient free switching.
The 3100 PQPager detects and records electric power disturbances that damage and disrupt PCs, telephone PBX systems, cash registers and other sensitive customer loads. When installed by a utility power quality engineer, the instrument grabs power line sags, swells, transients and interruptions, and promptly reports the problem to pagers. A unique built-in voice-mail-like feature eliminates the need for a computer.
Siemens Power Transmission & Distribution has introduced SIMEAS, a line of power quality measurement products designed to ensure system power quality, uniform load distribution, fault and harmonic imbalance recording and other power management capabilities. Designed for power stations and industrial and commercial installations, SIMEAS multifunctional units document power control quality while recording all event anomalies.
The ADAS DiaLog alarm monitoring and notification system, developed by Antx Inc. automatically phones or pages up to 16 separate numbers from a single or series of alarm conditions. DiaLog continues to call, giving user-recorded messages, until all alarms are acknowledged, ensuring that appropriate personnel are notified of critical conditions.
Substation automation is not a new concept. Substations have been equipped to perform automatic reclosing, automatic bus sectionalizing, automatic load transfers, automatic capacitor switching and many other functions for many years. In the past, however, these and other functions were implemented using a combination of control panels, auxiliary relays, switches, lights, meters, transducers and extensive wiring and cabling.
Through the years, SCADA/EMS has grown into a mature system providing valuable information and operational procedures to utility system operators. The SCADA/EMS systems have progressed from being large mainframe computer systems to today`s super fast PCs. The systems that were used in the past were closed-architecture systems, meaning that any sort of update or modifications often required a total reworking of the system. Any modifications to the systems were costly and very time consuming. Util
The deregulation of the utilities industry proves to be more of an ongoing evolution than a new permanent state. Adjusting business practices and policies to the proposed new environment is not a one-time task. Utilities, therefore, need to set their strategies for a continuing series of bold and creative initiatives employing all of their assets.
As the ground rules for utility industry deregulation are being laid out in the late 1990s, uncertainty and fear, as well as opportunity accompany them. The conditions for a competitive deregulated environment are distinct in every region of the country and abroad.