Residual Flux Calculation

SynchroTeq Plus Compatible

with recognized

SynchroTeq

Point on Wave

Switching

Controller

Residual Flux

calculation for

Unloaded

Transformer

Energization

Circuit Breaker

Independant

Design

(can be applied

with any C/B)

Advanced

Logic

Configuration

with

IEC 61131-3

Compliant

Soft PLC

Modular

I/O Boards

for flexible

configuration

Circuit Breaker Point on Wave Switching now supports Transformer Energization

I N T E L L I G E N T S Y S T E M S F O R T H E S M A R T G R I D

BENEFITS

Residual flux in the transformer core cannot be measured directly but can be calculated by integration of the voltage across the power transformer. If capacitive voltage transformers (CVTs) are not installed between the circuit breaker and the power transformer, SynchroTeq Plus can be supplied with dedicated voltage sensors to be installed on the power transformer’s bushing.

Point on wave switching is used extensively in shunt capacitor bank and shunt inductor applications to minimize inrush and overvoltages. For unloaded transformer energization, point on wave switching requires that the controller also has knowledge of the residual flux in the transformer’s core.

Without SynchroTeq Plus

With SynchroTeq Plus

Applications

FCSY-0298 Rev. 0 — 05/10

2284 de la Province Street Longueuil (Qc) Canada J4G 1G1 Phone: (450) 679-0003 Fax: (450) 679-9051 sales@vizimax.com

OPERATION LOAD SynchroTeq Plus STRESS AVOIDED

Inductive Capacitive Inductive and capacitive Transformer

Close Close Open Close

Close at peak voltage Close at voltage zero Optimize arcing time Close according to residual flux

Asymetrical Inrush Inrush and overvoltage Overvoltage and restrike Inrush and overvoltages

Advanced Communications

Configuration Flexibility SynchroTeq Plus adds communication protocol support to a SCADA or substation DCS system.

By integrating a soft PLC engine, SynchroTeq Plus lets the user define the behavior of the modular input/outputs. The soft PLC is IEC 61131-3 compliant, supporting all 5 programming languages (Ladder, FBD, SFC, ST and IL)

Modbus DNP 3

IEC 61850 server and Goose

...and many more

IEC 60870

Optional client and protocol gateway