David C. Mazur

Time synchronization of automation controllers for power applications

This paper investigates various forms of industrial time synchronization and applies these methods to programmable automation controllers (PACs) for power system applications. PACs have been used in the industry for many control applications, and advancements in synchronization technology have allowed PACs to be used in high-speed control and data acquisition systems. This paper looks at using the PAC as a time-synchronized sequence-of-events recorder for substation automation. It is shown that a PAC can be time synchronized to multiple time references and provide accuracies accepted by the power industry.

Time Synchronization of Automation Controllers for Power Applications

This paper investigates various forms of industrial time synchronization and applies these methods to programmable automation controllers (PACs) for power system applications. PACs have been used in the industry for many control applications, and advancements in synchronization technology have allowed PACs to be used in high-speed control and data acquisition systems. This paper looks at using the PAC as a time-synchronized sequence-of-events recorder for substation automation. It is shown that a PAC can be time synchronized to multiple time references and provide accuracies accepted by the power industry.

Benefits of IEC 61850 standard for power monitoring and management systems in forest products industries

The IEC 61850 standard, using Ethernet as its primary communication architecture, can be utilized in a fashion to significantly benefit pulp and paper process users. While IEC 61850 defines three types of communication: Generic Object Oriented Substation Event (GOOSE), Manufacturing Message Specification (MMS), and Sampled Measured Values (SMV), this paper will focus on the benefits of Manufacturing Message Specification (MMS) communications. Utilizing the IEC 61850 communications, measurands can be gathered into a central system. This repository of data can be accessed by multiple users anywhere on the factory or enterprise networks. This data can be used for energy management, load shedding, and complete power system monitoring and control. Additionally, IEC 61850 allows for the command and control, or actuation of protection equipment in the system; therefore reducing start time between failures while also increasing safety levels as remote actuation does not require local access and the use of Personal Protection Equipment (PPE). In modern Supervisory Control and Data Acquisition (SCADA) systems, the measurands and targets are visually displayed providing a visual representation of the electrical and process control system performance. This paper will discuss the merits of constructing an IEC 61850 based monitoring and management solution for forest products and pulp and paper process industries.

An electrical mine monitoring system utilizing the IEC 61850 standard

Motor control assets are foundational elements in many industrial operations. In the mining industry, these assets primarily consist of motor control centers and drives, which are available with a comprehensive assortment of control and monitoring devices. Various intelligent electronic devices (IEDs) are now used to prevent machine damage and downtime. As motor control devices have advanced in technology, so too have the IEDs that protect them. These advances have resulted in new standards, such as the International Electrotechnical Commission (IEC) 61850, that have embedded intelligence and a standard set of communication schemes by which IEDs can share information in a peer-to-peer or one-to-many fashion. This paper discusses the merits and steps involved with interfacing IEDs to a mining process control network via the use of the IEC 61850 standard.

Intelligent motor control, a definition and value add to process control

As technology continues to drive innovations, heavy industrial enterprises must continue to keep pace to remain competitive in and ever changing marketplace. The trend of technology is to replace systems of yesterday with higher performance, low-cost, option rich devices that shorten the return on investment and offer more flexibility. As control system technology continues to evolve, we see this same migration in the way many functions are being increasingly distributed to smarter, more granular, control system components capable of performing localized operations that were once the responsibility of a central or master controller. The integration of intelligent devices, device level networks, and interrogation software into medium voltage (MV) and low voltage (LV) motor control centers is a good example of how technology can deliver improved diagnostics, early warnings for increased system reliability, design flexibility, simplified wiring and provide another level of personnel safety for process industries. This paper focuses on technology integration, intelligent devices and device level information collection to provide convergence of control and information for plant wide optimization.

Developing Protective Relay Faceplates: Taking Advantage of the Benefits of IEC 61850

This article outlines the procedure and guidelines used to create human-machine interface (HMI) faceplates for industrial control systems that represent protective relays. The faceplates are developed around an International Electrotechnical Commission (IEC) 61850-enabled network and represent a structured, industry-accepted, HMI format. The background and benefits of the IEC 61850 standard are also discussed.

Intelligent Motor Control: Innovations in Process Optimization

As technology continues to drive innovations, industrial enterprises must keep pace to remain competitive in an ever-changing marketplace. The technology trend is to replace the systems of yesterday with higher-performance, lower-cost, option-rich devices that shorten the return on investment and offer more flexibility. As control system technology evolves, systems migrate to functions that are being increasingly distributed to smarter, more granular control system components capable of performing localized operations. These functions were once the responsibility of a central or master controller. For example, there is integration of intelligent devices, device-level networks, and interrogation software into medium-voltage (MV) and lowvoltage (LV) motor-control centers (MCCs). Technology can deliver improved diagnostics, early warnings for increased system reliability, design flexibility, simplified wiring, and another level of personnel safety for process industries. This article focuses on technology integration, intelligent devices, and device-level information collection to provide convergence of control and information for plantwide optimization.

Protective relay faceplate development utilizing the benefits of IEC 61850

This paper outlines the procedure and guidelines used to create Human Machine Interface (HMI) faceplates for industrial control systems that represent protective relays. The faceplates are developed around an IEC 61850 enabled network and represent a structured, industry accepted, HMI format. Background and benefits of the IEC 61850 standard are also discussed.

Synchronized rotor angle measurement of synchronous machines

A key input parameter to governor feedback control and stability protection of generators is the angle of the induced voltage internal to the generator. Current practice is to estimate this value using measurements from the terminals of the generator and mathematical models. This project aims to develop a system that would directly measure the internal angle of the generator using a rotary encoder on the shaft of the machine. This document describes the theory and experimental setup of this proposed system and outlines the test procedure of experimentation.

Defining the Industrial Demilitarized Zone and Its Benefits for Mining Applications

There are many organizations and standard bodies that recommend segmenting the enterprise zone from the industrial zone by utilizing an industrial demilitarized zone (IDMZ). This paper will discuss the basic principles and purpose behind an IDMZ. Additionally, this paper will discuss various strategies and design considerations to help users understand their application requirements for the development and deployment of an IDMZ.