Substation Automation (S.A) System

Project Supervisor: Stuart Wildy

CONTENTS

• Introduction

• Project Management Process for S.A System

• Customer Requirements

• Project Results

• Functional Design Specifications

• System Architecture

• Switchboard Schematics

• SCADA Programming

• IEC 61850

• Conclusion

Introduction• Aim – To develop SCADA program as per customer

specifications that will allow to monitor and control the substation equipment's remotely.

• Objectives of the Project:1. Gain overall product knowledge which would be used in our switchboard. 2. Understanding networks and different communication concepts.3. Designing schematics/system architecture to show interconnection of devices within switchboard at substation. 4. Developing software as per customer requirement for remote control of substation through SCADA.

Introduction• What is Substation Automation system ? Protection, Monitor and Control of substation

remotely• Levels in Substation Automation:

Introduction

• Need for Substation Automation System ?

- Reduced Wiring

- Asset Management

- Preventing Outages

- Conditional Maintenance

- Improved Functionality

Project Management Process

Project Management Process

• Where the project starts?Customer specifies the requirement

• Solution to the requirements : Functional Design Specification

System Architecture

Switchboard Schematics

SCADA Programming

Customer Requirements• Customer provides some specifications that helps developer for

providing the solution.

• Specifications include:

Data for monitoring the substation

Controlling functions

Make of the device

Feeder information

Single line diagram of their distribution system

Single Line Diagram

Project Results

Functional Design Specification• FDS is a document submitted to customer that shows design

consideration based on the requirements

• It explains functionality and configuration of S.A system:

Level 1 – Intelligent Electronic Devices (relays, meters)

Level 2 – Gateways (protocol convertor)

Level 3 – Human Machine Interface (SCADA system)

( view next slide on system architecture for better understanding on how different levels are arranged and how data is flowing)

System Architecture

Screen Shot from the software

Switchboard Schematics

Board General Arrangement

Board General Arrangement

Board Equipment Location

SCADA Programming(Supervisory Control and Data Acquisition)

• SCADA: for monitoring and controlling the substation remotely over PC.

• SCADA selected for project – XENON

• Programming steps involves creating and configuring:DriversData typesVariablesFramesScreensFunctions

SCADA Programming• Drivers: It helps SCADA system to understand protocols from other devices, which

is required for exchanging data for communication. In short it allows communication between SCADA with other devices (IEDs).

• Data Types: Variable created during programming are based on data types. They describe the structure of variable whether Boolean or unsigned integer, etc.

• Variables: They act as interface between data source (relays) and SCADA. They are created from the tag list perhaps the parameters which needs to be monitored.

• Frames : It is the basis for creating screen. The size and position is defined for the screen.

• Screens: It is a window with pre-defined properties.

• Functions: They are linked to each screen, which will be automatically executed on opening or closing the screen,

Xenon SCADA Drivers

XENON SCADA Data Types

Xenon SCADA Variables

Xenon SCADA Frames

Frames

Xenon Screens

Xenon SCADA Functions

XENON SCADA SLD

SCADA Monitoring Screen

IEC 61850 – To The Future

IEC 61850

• A new standard protocol for S.A system.

• Spreading widely within S.A industries.

• Interoperability of the devices from different manufacturers.

• Uses readily available industrial Ethernet and communication components.

• Future-proof architecture, client – server model.

New Architecture Create Advantages

• No more classical master-slave configuration and no bottle neck.

Client / Server Architektur with distributed Intelligence

SCADA – WAN

Station bus

Engineering Browser

Process

Ethernet IEC61850

Corporate Network TCP/IP

HMI Station Unit

independend communication

Modbus Protocol Vs IEC 61850 Protocol

Modbus IEC 61850

Main task is the exchange of compatible protection signals to S.A unit

Main task is to exchange all the information of all devices to Ethernet bus

Only few commands are compatible All information is described in substation control language within logical node.

Master Slave configuration Client Server configuration

Serial communication with low baud rates in kbps

TCP/IP communication with high baud rate in Mbps

Uses RS- 485 connector cable Uses RJ – 45 connector

Max number of slaves can be 256 Max number depends upon network class

Conclusion Final achievements of the project:

Gained Electrical knowledge related to the project Analysed the customer specifications Functional design specification document Designed system architecture Hardware solution – building switchboardSoftware solution – developed SCADA program

Project relevance – complete SCADA program for the employer