Dispatcher Power Flow
PRISM/BSI Dispatcher Power Flow (DPF) software is part of the EMS software suite. It can be executed either in real-time or in off-line study mode. Through the PRISM Graphical Operator Interface, the user can specify what case is to be evaluated. These can be either the real-time data, a set of previously saved cases, data input manually or imported through a file.
DPF supports three load flow solution algorithms:
- Full Newton-Raphson solution
- Fast Decoupled Solution
- Gaussian Solution
All three solutions are available at all times, employ the same database and user dialogue, and can be used interchangeably. DPF provides a full set of tools for quick creation of operating scenarios in the study mode.
All DPF solution algorithms support the following features:
- Transformer and generator adjustment to control voltage at local or remote buses
- Switched reactive power devices adjusted to hold a scheduled voltage
- Two-terminal and multi-terminal DC transmission lines
- Interchange control between areas
- Limit checking and violation alarming of branch flows and bus voltages
Power Flow modules are supported by a number of display facilities, each dedicated to a particular application in the control center environment:
- All system voltages and power flows can be compared to specified limits; PRISM/BSI SecureSuite will alarm any values, which violate their assigned limits.
- All system operating quantities can be transferred to the PRISM Interface module, from which they can be accessed by the standard Operator Interface.
- Summary reports are available for individual buses, for specified groups of buses, or for the entire system.
- On an area or island basis, DPF can display summary information that shows the characteristics of subdivisions of the power system.