V&R Energy: POM Applications Suite for Transmission System Analysis and Optimization
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POM is a comprehensive package for steady-state, transient and small-signal analysis of the electric power system networks in planning, operations and real-time environments.
POM Suite consists of the main application, Physical and Operational Margins (POM), and a number of add-on modules.
The add-on modules are:
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POM-SA - Small Signal Analysis
Steady-state analysis
is based on fast AC analysis, which uses the full Newton-Raphson method to solve a nonlinear power flow model. The normal conditions (N-0) model and each (N-k) contingency are applied while simultaneously monitoring multiple constraints: voltage stability, thermal overload, voltage deviation, and voltage limit violations. These constraints can be monitored over the entire network or any portion thereof. Some of the application features are:
- Load flow analysis
- Voltage stability analysis
- AC transfer simulation
- Massive AC contingency analysis (N-1, N-1-1, N-2 analysis): analysis of Planning Events
- Prediction and prevention of cascading outages: analysis of Extreme Events
- Transmission system optimization: determining optimal remedial actions
- Computing secure operating region: a boundary-based solution
- Ranking future transmission expansion projects
Transient stability analysis
allows the user to compute transient stability limits during massive contingency analysis and includes:
- Traditional time-domain simulation
- Short circuit computation
- Fast Fault Screening of three-phase and unbalanced faults
Real Time
For the real-time environments, POM Suite offers the following capabilities:
- CIM-Compatible
- Utilizes PMU data to predict system instability
Smart Grid Applications
POM Suite offers a smart solution for the transmission system, which includes:
- Utilizing PMU data to predict system instability and alarm the operator
- Improving the efficiency of the power grid by minimizing the system losses
- Improving reliability of transmission grid to facilitate integration of renewable energy
Applications for Planning
- Automating and significantly expediting the studies to comply with NERC TPL Standards:
- Massive N-1-1, N-2 AC contingency analysis
- Automatic remedial actions
- Database output
- Fast transient stability analysis with FFS
- Automated AC transfer/load pocket and contingency analyses with visualization, which performs the following analysis within one simulation run:
- Determines available transfer capability for each contingency
- Determines interface flows
- Automatically builds PV-curves
- Reliability Analysis - Computing reliability indices
- Phase-shifter settings optimization to relieve post-contingency violations
Applications for Operations
- N-1, N-2 studies for outage coordination
- Voltage stability – fast P-V curve analysis
- Power transfer analysis with visualization tool implemented for N-1, N-2, …, N-K
- Emergency mitigation measure process – load shedding
Real-Time Analysis Applications
- Massive N-1, N-1-1, N-2 AC contingency analysis
- Utilizing PMU data to continuously monitor the system and alarm the operator of impending crisis
Application Capabilities
- Extremely fast. Applies 50,000 contingencies per hour, or under 0.1 sec per contingency for a 50,000-bus case during AC contingency analysis;
- Alleviates thermal, voltage and voltage stability violations during massive AC contingency analysis in approximately 10 sec for one contingency for a 50,000-bus case.
- Performs a one second time-domain simulation in approx. 6 seconds for a 50,000-bus case and 17000 dynamic models
- Handling of very large contingency lists - millions of contingencies per run during AC contingency analysis
- Fast and accurate computation of the operating limits and their visualization, and performing corrective actions to mitigate the exceeding operating limits
- Assessment of the cascading outages
- Alleviating voltage instability and identifying it’s causes; increasing voltage stability margins
- Automatic N-1-1 contingency analysis to comply with the upcoming NERC standards
- Providing a boundary-based solution
- Performing Fast Fault Screening to enable comprehensive transient stability analysis and brining transient stability analysis into the real-time environment
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