20 research outputs found
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An Assessment of PIER Electric Grid Research 2003-2014 White Paper
This white paper describes the circumstances in California around the turn of the 21st century that led the California Energy Commission (CEC) to direct additional Public Interest Energy Research funds to address critical electric grid issues, especially those arising from integrating high penetrations of variable renewable generation with the electric grid. It contains an assessment of the beneficial science and technology advances of the resultant portfolio of electric grid research projects administered under the direction of the CEC by a competitively selected contractor, the University of California’s California Institute for Energy and the Environment, from 2003-2014
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Distribution System Voltage Management and Optimization for Integration of Renewables and Electric Vehicles: Research Gap Analysis
California is striving to achieve 33% renewable penetration by 2020 in accordance with the state’s Renewable Portfolio Standard (RPS). The behavior of renewable resources and electric vehicles in distribution systems is creating constraints on the penetration of these resources into the distribution system. One such constraint is the ability of present-‐‑day voltage management methodologies to maintain proper distribution system voltage profiles in the face of higher penetrations of PV and electric vehicle technologies. This white paper describes the research gaps that have been identified in current Volt/VAR Optimization and Control (VVOC) technologies, the emerging technologies which are becoming available for use in VVOC, and the research gaps which exist and must be overcome in order to realize the full promise of these emerging technologies
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Application of Advanced Early Warning Systems with Adaptive Protection
This project developed and field-tested two methods of Adaptive Protection systems utilizing synchrophasor data. One method detects conditions of system stress that can lead to unintended relay operation, and initiates a supervisory signal to modify relay response in real time to avoid false trips. The second method detects the possibility of false trips of impedance relays as stable system swings “encroach” on the relays’ impedance zones, and produces an early warning so that relay engineers can re-evaluate relay settings. In addition, real-time synchrophasor data produced by this project was used to develop advanced visualization techniques for display of synchrophasor data to utility operators and engineers
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Grid Futures through Scenario Planning
For most of the 20th century, the electric grid had a relatively simple role: moving electricity from central power plants to the consumers. Its behavior was predictable, operation was largely deterministic, and an operator was in control. But with growing uncertainty, aging infrastructure and uncertainty in energy markets, we must begin to think about the future of the energy grid and restructuring to effectively rise to these challenges
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Plausible Futures for Electric Grid Architecture - A Scenario Planning Exercise
The aging of installed underground distribution cables is a looming issue facing electric utilities in California and throughout the U.S. A variety of technologies and tests are currently available to evaluate underground cables, but there is often little correlation between the diagnostic results and the actual deterioration. This project will evaluate existing diagnostic approaches used to detect or predict incipient failure and determine whether new innovative technologies can be utilized to improve diagnostic accuracy while reducing the costs
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Transmission Technology Research for Renewable Integration
Develop and apply advanced signal processing algorithms on phasor measurement unit (PMU) data for oscillation detection and analysis. It will include testing and validation procedures based on simulation data and field measurement data. A real-time prototype tool is to be developed for monitoring and analyzing power grid oscillations
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Integrating Renewable Generation with the Electricity Grid: Distribution System Issues
Develop specifications, algorithms, computer codes, and graphical interfaces for two grid operator online analysis and visualization tools to monitor wind generation power ramping requirements. Predict unexpected transmission system impacts of intermittent generation on congested paths, voltage levels, and reactive power margins. Provide decision support for operator problem mitigation
Recommended from our members
An Assessment of PIER Electric Grid Research 2003-2014 White Paper
This white paper describes the circumstances in California around the turn of the 21st century that led the California Energy Commission (CEC) to direct additional Public Interest Energy Research funds to address critical electric grid issues, especially those arising from integrating high penetrations of variable renewable generation with the electric grid. It contains an assessment of the beneficial science and technology advances of the resultant portfolio of electric grid research projects administered under the direction of the CEC by a competitively selected contractor, the University of California’s California Institute for Energy and the Environment, from 2003-2014
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Electric Distribution System Models for Renewable Integration: Status and Research Gaps Analysis
Appendix B to Real Time Grid Reliability Management 20
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User Requirements and Research Needs for Renewable Generation Forecasting Tools That Will Meet the Needs of the CAISO and Utilities for 2020
Final Project Report prepared for CIEE and California Energy Commissi