Southern California Edison , the largest subsidiary of Edison International, is the primary electricity supply company for much of Southern California, USA. It provides 14 million people with electricity. However, the Los Angeles Department of Water and Power, San Diego Gas & Electric, Imperial Irrigation District, and some smaller municipal utilities serve substantial portions of the southern California territory. Wikipedia.
Sioshansi F.P.,Southern California Edison
Electricity Journal | Year: 2011
The Smart Grid, if properly implemented, promises to allow the information revolution at last to permeate the electric power sector, but it won't come easy or cheap. © 2011 Elsevier Inc.
Yinger R.J.,Southern California Edison |
Venkata S.S.,Alstom |
Centeno V.A.,Virginia Polytechnic Institute and State University
IEEE Transactions on Smart Grid | Year: 2012
A novel advanced protection system was developed and demonstrated on SCE's 12 kV Circuit of the Future. This system used fiber optic communications to coordinate the operation of fault interrupting switches located along the circuit. One of the creative components of this project is the study of the circuit with a superconducting fault current limiter (FCL) connected in series with the feeder. The details of the FCL are described in this paper. Knowledge gained from this demonstration was used to design a second generation advanced distribution protection system. This system replaced fiber with radio communications and looped two radial 12 kV circuits together to reduce cost and improve reliability. This system shows promise in helping with protection of circuits with high penetrations of photovoltaic generation. Implementation is planned in 2013 as part of SCE's Irvine Smart Grid Demonstration. © 2012 IEEE.
Slepchenkov M.N.,University of California at Irvine |
Smedley K.M.,University of California at Irvine |
Wen J.,Southern California Edison
IEEE Transactions on Industrial Electronics | Year: 2011
This paper studies the effectiveness of reactive power compensation using a multilevel, hexagram-converter-based STATic COMpensator (STATCOM) with one-cycle control (OCC) for a wind farm with fixed-speed turbines, and the interaction with the power system network. Comparison is made with several common types of multilevel voltage source converters used for STATCOM applications. A new voltage control method based on OCC principles for hexagram-based STATCOMs is proposed and proven by a wind farm power system simulation showing the improvement of voltage variations caused by wind speed changes. The experimental results from tests of a small-scale hexagram converter prototype have verified the proposed converter and control method. © 2011 IEEE.
Dwyer J.F.,EDM International Inc. |
Harness R.E.,EDM International Inc. |
Donohue K.,Southern California Edison
Conservation Biology | Year: 2014
Electrocution on overhead power structures negatively affects avian populations in diverse ecosystems worldwide, contributes to the endangerment of raptor populations in Europe and Africa, and is a major driver of legal action against electric utilities in North America. We investigated factors associated with avian electrocutions so poles that are likely to electrocute a bird can be identified and retrofitted prior to causing avian mortality. We used historical data from southern California to identify patterns of avian electrocution by voltage, month, and year to identify species most often killed by electrocution in our study area and to develop a predictive model that compared poles where an avian electrocution was known to have occurred (electrocution poles) with poles where no known electrocution occurred (comparison poles). We chose variables that could be quantified by personnel with little training in ornithology or electric systems. Electrocutions were more common at distribution voltages (≤33 kV) and during breeding seasons and were more commonly reported after a retrofitting program began. Red-tailed Hawks (Buteo jamaicensis) (n = 265) and American Crows (Corvus brachyrhynchos) (n = 258) were the most commonly electrocuted species. In the predictive model, 4 of 14 candidate variables were required to distinguish electrocution poles from comparison poles: number of jumpers (short wires connecting energized equipment), number of primary conductors, presence of grounding, and presence of unforested unpaved areas as the dominant nearby land cover. When tested against a sample of poles not used to build the model, our model distributed poles relatively normally across electrocution-risk values and identified the average risk as higher for electrocution poles relative to comparison poles. Our model can be used to reduce avian electrocutions through proactive identification and targeting of high-risk poles for retrofitting. © 2013 Society for Conservation Biology.
Southern California Edison | Date: 2014-03-28
A system for securing electric power grid operations from cyber-attack, the system comprising a collection of security services distributed throughout a smart grid in two main categories of services; central security services and edge security services.