Power System Application Software PAS

Introduction


The power system application software PAS is a main component of the energy management system (EMS). The main roles of the software package include: providing current state of the power system, assisting the dispatcher to supervise, analyze and control the operation of the power system, providing resolutions for system optimization and elimination or reduction of insecurity factors. 
The power system application software PAS is ideal for network dispatching centers of national, provincial and large scale local power system and other places where power network analysis is needed.

Functions

  • Network topology
  • State estimation (SE)
  • Network equivalent
  • Dispatcher power flow (DPF)
  • Sensitivity analysis
  • Theoretical network loss calculation
  • Static security analysis (SSA)
  • Short and medium term system load forecasting (SLF)
  • Bus load forecasting (BLF)
  • Optimized power flow (OPF)
  • Automatic voltage control (AVC)
  • Short circuit current calculation
  • Dynamic security analysis
  • Applications suitable for local power dispatch: transformer economic operation, arc suppression coil compensation calculation.

Features

  • Based on OPEN-2000/SD-6000 platform, excellent openness, extendable for new functions.
  • Friendly MMI for easy operation.
  • Modular integrated design.
  • Encapsulation according to applications. Each function is comparatively independent but organically related. 
  • Network model shared by all applications. Rapid and convenient data transmission. 
  • Refined integrated graphic editing, model building and database filling technology, solving the problem of difficult network model maintenance. 
  • Perfect dynamic topological coloring function.
  • State estimation has perfect false switch state identification and bad data identification functions. 
  • State estimation is capable of providing proposal for optimized measurement configuration.
  • Dispatcher power flow provides various calculation types and scope. PQ rapid decomposition and Newton algorithms are selectable and can be switched automatically. Influences of primary and secondary FM, tie-line control in AGC, controllable reactive voltage devices, load frequency and voltage features can also be considered.  
  • Dispatcher power flow provides various simple and practical operation modes.
  • Sensitivity analysis can provide references for various kinds of control.
  • Load forecasting uses various models and algorithms. Weather influence can be considered.  Temperature model is practical with self-adjusting function.
  • Automatic voltage control can be operated in open or close loop mode.
  • Applications designed for local dispatching.

Engineering Applications


The software has already been used in dozens of large and medium power Dispatching Centers, including Northwest Regional Dispatching Center, Jiangsu Provincial Dispatching Center, Chongqing City Dispatching Center, Hainan Provincial Dispatching Center, Yunnan Dispatching Center and Guangxi Autonomous Region Dispatching Center, etc.