Upgrading power system protection to improve safety, monitoring, Protection, and control
- Resource Type
- Conference
- Authors
- Hill, Jeff; Behrendt, Ken
- Source
- Conference Record of 2008 54th Annual Pulp and Paper Industry Technical Conference Pulp and Paper Industry Technical Conference, 2008. PPIC 2008. Conference Record of 2008 54th Annual. :77-87 Jun, 2008
- Subject
- Power, Energy and Industry Applications
Relays
Circuit faults
Fault currents
Power generation
Current transformers
Generators
Computed tomography
- Language
- ISSN
- 0190-2172
One large Midwestern paper mill is resolving an arc-flash hazard (AFH) problem by installing microprocessor-based (μP) bus differential protection on medium-voltage switchgear and selectively replacing electromechanical (EM) overcurrent relays with μP relays. In addition to providing critical bus differential protection, the μP relays will provide analog and digital communications for operator monitoring and control via the power plant data and control system (DCS) and will ultimately be used as the backbone to replace an aging hardwired load-shedding system.