Phần 27 KHÓA ĐÀO TẠO TÍNH TOÁN ỔN ĐỊNH VÀ ỨNG DỤNG TRÊN PHẦN MỀM PSSE CHO KỸ SƯ HỆ THỐNG ĐIỆN (Sử dụng Ngôn ngữ lập trình Python trong Phần mềm PSSE)

KHÓA ĐÀO TẠO TÍNH TOÁN ỔN ĐỊNH VÀ ỨNG DỤNG TRÊN PHẦN MỀM PSSE CHO KỸ SƯ HỆ THỐNG ĐIỆN (Sử dụng Ngôn ngữ lập trình Python trong Phần mềm PSSE): • Introduction• Application Program Interface• PSS®E Extension Modules• Power Flow Operation• Power Flow Data Changing • Subsystem Definition• Dynamics Simulation• Single Element and Subsystem Data Retrieval• Results Data Retrieval

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TRANSMISSION &

DISTRIBUTION

A Division of Global Power

POWER SYSTEM STABILITY CALCULATION TRAINING

D 14 15 A t ti i P th Day 14-15 - Automation using Python

December 5, 2013 Prepared by: Mohamed El Chehaly

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2

OUTLINE

• Introduction

• Application Program Interface

• PSS®E Extension Modules

• Power Flow Operation

• Power Flow Data Changing

• Subsystem Definition

• Dynamics Simulation

• Single Element and Subsystem Data Retrieval

• Results Data Retrieval

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INTRODUCTION eBook for You

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Introduction to PSS®E Automation

4 INTRODUCTION

 Response files or “idv”: Contains a set of

instructions and inputs emulating the

program operation manual

 IPLAN programs:

 Simple programming language designed forp p g g g g g

PSS®E

 Created in a text editor and compiled

 Limited capabilities compared to modern

programming languages

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 In PSS®E since version 30

 Faster development, flexibility, power data

processing and easy integration with other

applications and programming languages

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Recording an Automation File

6 INTRODUCTION

Recording an Automation File

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Running an Automation File

7 INTRODUCTION

Running an Automation File

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Controlling PSS®E Using the API

9 APPLICATION PROGRAM INTERFACE

Controlling PSS®E Using the API

 Set of callable routines for building

software applications

 API is the primary and recommended

method for accessing PSS®E functionality

for automation

 API is described in manual PSS®E

Application Program Interface

 Descriptions of the syntax for using each

API routine in each automation method

 Siemens PTI support users who use batch

commands and Python programs only.

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Default Values

10 APPLICATION PROGRAM INTERFACE

Default Values

 _i: Default integer value

 _f: Default real value

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PSS®E EXTENSION MODULES

PSS®E EXTENSION MODULES eBook for You

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Modules for Python

12 PSS®E EXTENSION MODULES

 Psspy: Provides access to the PSS®E API

 Pssarrays: Provides Python functions to

retrieve PSS®E solutions results

 Pssexcel: Provides Python functions

export PSS®E data or solution results to

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 Excelpy: Provides Python functions to

interface with Excel (create, populate and

format workbooks)

 Dyntools: Tools for processing channel

output files

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PSSPY

 Power Flow Operation

 Power Flow Data Changing

 Optimal Power Flow

 Dynamic Simulation

 Subsystem Definition

 Diagram View APIs

 Single Element Data Retrieval

 Subsystem Data Retrieval

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POWER FLOW OPERATION eBook for You

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16 POWER FLOW OPERATION

CASE

Use this API to open a Saved Case (.sav)

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SAVE

Use this API to save a Saved Case (.sav)

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DSCN

Use this API to disconnect a bus

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PURG

Use this API to delete an equipment

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Other Functions

POUT: Print the power flow solution results

ANSI: Calculate fault currents according to

ANSI

ASCC2: Apply a series of fault at various

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Other Functions

PV_ENGINE3: Run PV analysis

QV ENGINE: Run QV analysis

CONG: Convert generators

CONL: Convert loads

ORDR: Calculate a sparsity preserving

ordering of buses

FACT: Factorize the network admittance

matrix

TYSL: Run switching study network solutions

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POWER FLOW DATA

CHANGING

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Main Functions

26 POWER FLOW DATA CHANGING

Main Functions

 The API routines that contain “_DATA” can

be used to add a new network element or

modify an existing one

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Main Functions

 The “_CHNG” API routines can be used

only to modify the data of an existing

network element (only in PSS®E 33)

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Main Functions

 The “SEQ_” API routines are always used

to modify data of an existing element

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SUBSYSTEM DEFINITION eBook for You

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Types of Subsystems

30 SUBSYSTEM DEFINITION

Types of Subsystems

 ASYS: Area subsystem

 BSYS: Bus subsystem

 OSYS: Owner subsystem

 ZSYS: Zone subsystem

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DYNAMIC SIMULATION eBook for You

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Dynamic Simulation Function

33 DYNAMIC SIMULATION

 DYRE_NEW

 Clear dynamics working memory

 Read a Dynamics Data file (.dyr)

 Place the model references specified on its data

records into dynamics working memory

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 STRT

 Initialize a dynamic simulation

 Specify the Channel Output File (.out)

 Verify that the initial condition are satisfactory

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 RUN

 Calculate state-space dynamic simulation

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Output Channel API

 CHSB: General Output Channel Related

Function

 Specify on a subsystem basis the simulation

variables to monitor during dynamic simulation

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 CHSB: General Output Channel Related

 Monitor machine angle statistics

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 Assign channels to monitor individual

quantities for one element

 Machine Quantities

 Branch Quantities (branch two winding

 Branch Quantities (branch, two-winding

transformers, three-winding transformer)

 Bus Quantities (voltage and angle)( g g )

 Load Quantities (P and Q)

 State Channel

 Variable Channel

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Disturbance API

 Fault applying APIs

 dist_branch_fault: Apply a fault at the IBUS end

of line or a two-winding transformer

 dist bus fault: Apply a fault at a bus

 dist_3wind_fault: Apply a fault at the IBUS end

of a three-winding transformer

 dist_scmu_fault: Calculate an unbalanced fault

and apply the equivalent positive sequence fault

admittance at a bus

 dist_spcb_fault_2: Calculate a branch unbalance

and apply the equivalent positive sequence pi

model at a branch

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Disturbance API

 Fault applying APIs

 dist_clear_fault: Clear a fault

 Tripping APIs

 dist_branch_trip: Set a line or a two-winding

transformer to out-of-service

 dist bus trip: Disconnect a bus

 dist_3wind_trip: Set a three-winding transformer

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Dynamic Model API

 Add a new dynamic model

 Modify the CON, ICON, or VAR of an

 List or remove from dynamic working

memory models that are not present in the

current power flow case

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 Type of models include:

 Induction machine (only in PSS®E 33)

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SINGLE ELEMENT AND

SUBSYSTEM DATA

RETRIEVAL

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Data Retrieval

45 SINGLE ELEMENT AND SUBSYSTEM DATA RETRIEVAL

Data Retrieval

 Type of retrieved data:

 Return an array of one or a set of integer data

values (number, area, zone, owner, status, …)

 Return an array of one or a set of real data values

(bus voltage, bus angle, PGEN, QGEN, branch

reactance, PLOAD, …)

 Return an array of one or a set of complex data

values (voltage and angle, real and reactive

power, …)

 Return an array of one or a set of character data

values (name, ID, …)

 Return the number of elements in a subsystem

(count)

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RESULTS DATA RETRIEVAL

MODULE

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Results Data Retrieval

47 RESULTS DATA RETRIEVAL MODULE

Results Data Retrieval

 API routines used as to retrieve results

from the solutions/calculations in the form

of arrays

 Produce customized reports or exported

to a text file or an Excel spreadsheet

 Cannot be recorded

 Not part of the psspy module

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PSSARRAYS

 AC Contingency (ACCC)

 ACCC summary: Return AC Contingency

monitored elements labels, contingency labels

 ACCC solution: Return ACCC post-contingency,

post-tripping or post-corrective action solution

monitored MVA flows, ampere flows and bus p

voltages for each contingency

 ACCC summary report, ACCC solution report,

ACCC violation report: Generate text report for

each ACCC module

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PSSARRAYS

 Short-circuit studies

 ASCC currents: Return short-circuit currents and

Thevenin impedance in three-phase ac systems

from ASCC 2 API Results are returned for bus

from ASCC_2 API Results are returned for bus

faults only

 IECS currents: Return short-circuit currents and

according to IEC 60909 standard Results are

returned for bus faults only

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PSSARRAYS

 Short-circuit studies

 ASCC currents: Return short-circuit currents and

from ASCC 2 API Results are returned for bus

from ASCC_2 API Results are returned for bus

faults only

 IECS currents: Return short-circuit currents and

according to IEC 60909 standard Results are

returned for bus faults only

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PSSARRAYS

 PV analysis

 PV summary: Return PV analysis summary

 PV solution: Return PV analysis monitored flows

and bus voltages for each defined case

 PV summary report, PV solution report: Generate

text report for each PV module

 QV analysis

 QV summary: Return QV analysis summary

 QV solution: Return QV analysis monitored flows

and bus voltages for each defined case

 QV summary report QV solution report:

 QV summary report, QV solution report:

Generate text report for each QV module

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 IEC data file

 pssexcel iec data file

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QUESTIONS?

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