NDLI: Cold load pickup issues

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2015 68th Annual Conference for Protective Relay Engineers

2014 67th Annual Conference for Protective Relay Engineers

2013 66th Annual Conference for Protective Relay Engineers

2012 65th Annual Conference for Protective Relay Engineers

2011 64th Annual Conference for Protective Relay Engineers

2010 63rd Annual Conference for Protective Relay Engineers

2009 62nd Annual Conference for Protective Relay Engineers

Table of contents

Distributed automation for back-feed network power restoration

Oncor Electric Delivery Smart Grid initiative

Performance of relaying during wide-area stressed conditions highlights of the IEEE PSRC working group, C12 report

The 2008 revision of IEEE C37.2 Standard Electrical Power System Device Function Numbers, Acronyms and Contact Designations

Impact of CT errors on protective relays - Case studies and analysis

Designing copper wiring out of high voltage substations: A practical solution and actual installation

Meeting NERC requirements for oscillography and disturbance monitoring by collecting data from relays

15 years of experience with 100% generator stator ground fault protection— What works, what doesn't and why

Impact of frequency deviations protection functions

Report on design, testing and commissioning of 100% Stator Ground Fault Protection at Dominion's Bath County Pumped Storage Station

Design and testing of a system to classify faults for a generation-shedding RAS

Coordination of generator protection with generator excitation control and generator capability

Forward to the basics: Selected topics in distribution protection

Cold load pickup issues

Zero sequence circuit of three-legged core type transformers

Distribution single-phase tripping and reclosing: Overcoming obstacles with programmable recloser controls

Automated fault analysis using an intelligent monitoring system

Tests of distance relay performance on stable and unstable power swings reported using simulated data of the August $14^{th}$ 2003 system disturbance

Line current differential relay operation under severe current transformer saturation conditions

Advances in series-compensated line protection

Protecting transmission lines terminated into transformers

Protection of EHV transmission lines with series compensation: BC Hydro's lessons learned

Then versus now: A comparison of total scheme complexity

Understanding transmission system ground fault protection

Very high-resistance fault on a 525 kV transmission line - Case study

Distance elements: Linking theory with testing

Testing of advanced distance protection relays

Lessons learned from commissioning protective relaying systems

Integrating current differential relaying communications into an IP based infrastructure

Updated transmission line protection communications

Enhanced overcurrent algorithm for performance under CT saturation in industrial applications

Arc flash hazard regulation and mitigation

Bus protection for impedance grounded systems

Application guidelines for microprocessor-based, high-impedance bus differential relays

Efficient applications of bus transfer schemes utilizing microprocessor based relaying technology

A smarter greener power grid

Protection requirements for a large scale wind park

Short circuit behavior of wind turbine generators

Wind power from a utility perspective

Directional comparison protection for lines, buses, and transformers

Comparative characteristics of iron-core current transformers and Rogowski Coils for applications for protective relaying purposes

Real-world synchrophasor solutions

Comparison between high impedance and low impedance bus differential protection

Improvements in transformer protection and control

2008 61st Annual Conference for Protective Relay Engineers

2007 60th Annual Conference for Protective Relay Engineers

59th Annual Conference for Protective Relay Engineers, 2006.

58th Annual Conference for Protective Relay Engineers, 2005.

57th Annual Conference for Protective Relay Engineers, 2004

Cold load pickup issues

Content Provider	IEEE Xplore Digital Library
Author	Friend, F.
Copyright Year	2009
Description	Author affiliation: American Electric Power, USA (Friend, F.)
Abstract	Cold load pickup needs to be included as one of the considerations when protective relay set-points are selected for distribution feeder protection. It's universally recognized that, when a feeder is restored after an extended outage, the load can exceed the normal feeder load until normal load cycling is re-established. However, numerous feeder specific variables need to be considered. The methodology described in this report provides a perspective of relationships between load type, load diversity, percent of circuit load for various load types, and cold load pickup. It is noted, however, that the methodology in this report was developed with the assumption that an outage of sufficient duration (to establish cold load pickup) has occurred during peak load conditions.
Starting Page	176
Ending Page	187
File Size	145560
Page Count	12
File Format	PDF
ISBN	9781424441822
DOI	10.1109/CPRE.2009.4982512
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surge protection Circuits Current transformers Magnetic flux Capacitors Protective relaying Relays Impedance Voltage Heat pumps
Content Type	Text
Resource Type	Article

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