PSASP (Power System Analysis Software Package) is a power system analysis program with a long history, powerful functions and convenient use. It has China's independent intellectual property rights and is a large-scale software package with resource sharing, easy use, high integration and openness. Its function is similar to BPA, and its main functions include Tidal current calculation , transient stability Network loss Analysis, voltage stability, static security analysis, static and dynamic equivalence, direct transient stability, small signal stability Optimal power flow and Reactive power optimization , coordination relay protection Setting and simulation Etc.
PSASP has a three-tier architecture based on common data and models. The first floor is Resource base of common data and model , the second floor is Application package based on resource library , the third layer is Calculation result library and analysis tools 。
PSASP has text and graphical Power grid basic database with two input and edit modes, and with intuitive, convenient and powerful user-defined model method, PSASP has designed a powerful User defined (UD) module method It provides a powerful tool for self modeling to study new equipment and devices of power system. Many domestic universities and research institutions have done a lot of research work using the UD function of PSASP.
The so-called user-defined modeling method is that, without knowing the internal structure of the program and programming design, users can design various models according to their own calculation and analysis needs, using concepts familiar to engineering technicians and methods easy to master, so that in principle they can flexibly simulate any system element, automatic device and control function.
PSASP has been developed since 1973. Through continuous development, it has evolved from the early machine instruction version to the microcomputer Windows version.
Since its introduction in 1976, PPS/E has developed from a simple command line interface to an integrated interactive program for simulation, analysis and optimization of power system performance, and can provide probabilistic and dynamic modeling functions. Support power system planning and operation engineers to develop highly accurate and efficient system analysis. These powerful and user-friendly tools are easily integrated into any existing IT environment, with an intuitive graphical user interface, customizable visualization options, automation functions, and efficient data management.
It has become the most widely used type of business program. Mainly used for research The program package of power transmission system and generator's steady-state and dynamic functions can handle power flow calculation, fault analysis, network equivalence, dynamic simulation and safe operation optimization And so on. The input and output can be designed according to the user's requirements, which requires the user to have a certain programming foundation.
The power flow output graph of this software includes Wiring diagram, network structure and power flow parameters of all electrical components , very intuitive.
BPA in power system analysis and calculation usually refers to a set of widely used power system analysis software tools, the power flow and transient stability program developed by Bonneville Power Administration (BPA) in the 1960s. Now it mostly refers to the PSD-BPA procedure, commonly known as the Chinese version of BPA.
PSD is short for Power System Department. PSD-BPA refers to the BPA adapted to China's application background, which is made by the Power System Research Institute of China Electric Power Research Institute after digesting and absorbing the BPA from the United States. It is a module of PSD series software, responsible for Power flow and steady state calculation Part of.
The Chinese version of BPA was introduced by experts from China Electric Power Research Institute and Zhejiang University from 1978 to 1982 by BPA in the United States, and was popularized, applied, developed and maintained nationwide by the Power System Research Institute of China Electric Power Research Institute from 1984. It has developed into a large-scale commercial power system analysis software package named after PSD power system software package, which has Power system steady state, electromagnetic transient, electromechanical transient, medium and long-term dynamic, short-circuit current calculation, voltage stability calculation and frequency domain calculation etc. Full process simulation capability of AC/DC power system 。 BPA in the United States has terminated the development and maintenance of BPA power flow and transient stability procedures in 1996. Now only the Power System Research Institute of China Electric Power Research Institute maintains and upgrades PSD-BPA.
The model and algorithm of BPA are open, which can be found in the user manual of PSD power system software package and related papers.
BPA performs well in the calculation and analysis of large power systems composed of a large number of parameters and architectures.
PSCAD/EMTDC is an electromagnetic transient simulation software widely used in the world. EMTDC is the core of its simulation calculation. PSCAD (Power Systems Computer Aided Design) provides a graphical operation interface for EMTDC (Electronic Transients including DC). The earliest version of EMTDC was developed by Dr. Dennis Woodford of Canada in Manitoba Hydropower Authority in 1976.
PSCAD/EMTDC uses time domain analysis to solve complete power systems and differential equations (including electromagnetic and electromechanical systems), and the results are not only very accurate. PSCAD/EMTDC allows users to flexibly Establish circuit model ， Conduct simulation analysis , while simulating, users can Change control parameters In this way, we can intuitively see various measurement results and parameter curves, which greatly facilitates users to improve the fun and efficiency of simulation. PSCAD provides rich component libraries, ranging from simple Passive component To complex control module , so that Motor 、 FACTS device 、 Cable line And other models. PSCAD/EMTDC also allows users to define a new module in a user-defined way. The new module can be formed by the combination of modules provided in the component library. Its own examples are very useful for beginners, including various typical research objects. Beginners can modify these typical models until they become the required research objects.
EMTP/ATP is a simulation software for electromagnetic transient analysis of power system. EMTP is the most widely used program for high voltage power network and power electronics simulation in power system, focusing on Operation of the system Not the details of individual switches.
EMTP program is mainly used for simulation calculation Electromagnetic transient process of power system ATP is a version of EMTP. The ATP-EMTP program has the advantages of large scale, strong function, simulation and reality, and has been widely used in universities, scientific research, design and manufacturing departments in China. The program can solve problems including The steady-state or transient process of a large power system consisting of linear and nonlinear resistance, inductance and capacitance circuits with concentrated parameters, polyphase 7r type circuits, polyphase distributed parameter circuits, various types of switches, transformers, sources and control systems 。 In addition, the ATP-EMTP program is also widely used in the field of power electronics simulation.
At present, the research on electromagnetic transient simulation calculation of power system using EMTP mainly focuses on detailed component modeling and control. The network adopts a highly simplified model, the application of EMTP in overvoltage calculation, the network scale of dozens of nodes, the application in relay protection analysis The improvement of EMTP control system and power flow calculation, the necessity and feasibility of using ATP-EMTP to calculate the transient stability of large systems, etc.
DIgSILENT/PowerFactory is a power system simulation software developed by DIgSILENT GmbH of Germany.
DIgSILENT/PowerFactory software contains almost all commonly used power system analysis functions, such as Power flow, short circuit calculation, electromechanical transient and electromagnetic transient calculation, harmonic analysis, small signal stability analysis Etc. Another important feature is the combination of electromechanical transient analysis model and electromagnetic transient analysis model, which enables it not only to analyze the transient fault of power grid, but also to study long-term power quality problems and control methods.
DIgSILENT/PowerFactory provides a comprehensive model library of power system components, including Models of generators, motors, controllers, dynamic loads, lines, transformers, parallel equipment, and electrical parts of wind turbines, such as doubly fed induction motors and frequency converters They are included in the standard components of the existing model library. Wind speed, mechanical transmission system, aerodynamics and control system of wind turbine All are built in software using dynamic simulation language DSL.
