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Meet the Team

Jason Williams

Jason Williams

Creative Director

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Emma Swanson

Emma Swanson

Designer

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Michael Johnson

Michael Johnson

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Section Title

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power transformer monitoring and ranking

Jesse Lopez - CPS Energy

ABSTRACT SUMMARY – Power transformers are one of the most critical assets of the electrical transmission and distribution system. Monitoring of transformers is a process of acquiring and processing of data related to various parameters so as to predict and prevent the failure of a power transformer. CPS Energy’s fleet of power transformers is composed of 229 units from different manufacturers, different models, different voltages and a range of ages. CPS Energy’s Asset Management department is challenged with devising a monitoring and ranking strategy for these power transformers to establish the risk of failure or need for replacement to assure a reliable system. This presentation shows CPS Energy ranking system that prioritizes the annual candidates for replacement and for the DGA retrofit program.

ADVANCED DISTRIBUTION MANAGEMENT SYSTEM

Craig Schaub - Austin Energy

ABSTRACT SUMMARY – North America’s Electric Utility industry is experiencing a significant evolution related to the operation of our power networks. While the Bulk Electric System (made up of transmission lines and substations) has enjoyed granular remote control and monitoring for decades (in the form of SCADA/EMS), this level of automation is only recently being pushed out onto the Distribution System.

A mixture of elements is enabling a proliferation of Distribution Automation technologies including:

  • Microprocessors are becoming more powerful and less expensive
  • Telecommunication networks are becoming more ubiquitous
  • Inexpensive mass data storage capabilities
  • Advanced analytic capabilities

These forces are resulting in a rapid expansion of “near real time” awareness and control associated with power networks. This presentation should outline Austin Energy’s ongoing effort to modernize grid operations while maintaining safety, security and continuity of service to our customers. We will describe our new Advanced Distribution Automation System (ADMS) which is the central platform integrating much of our automation efforts as well as the power apparatus being equipped with remote control and monitoring capabilities.

APPLICATION OF FAULT AND DISTURBANCE RECORDING SYSTEMS IN AN IEC 61850 ENVIRONMENT

Shawn Nick and Melt Booysen - Insulect Australia

ABSTRACT SUMMARY – Taking advantage of high speed digital peer-peer communication introduced by the IEC 61850 standard for Fault Recording (FR) applications, we can improve system reliability and replace traditional hard-wiring between Intelligent Electronic Devices (IED).

In this paper we first discuss the basic concepts of the standard relating to FR application and then concentrate on the handling of virtual binary inputs (BI), triggering the FR IED and setting the priority of important records via Goose messages. Finally, a test and commissioning procedure is suggested for a FR device operating in an IEC 61850 environment.

The process of integrating a Qualitrol IDM+ recorder into a substation automation system (SAS) is discussed in a case study. The case study describes how to configure the FR IED in relation to the GOOSE publisher IED’s making use of virtual BIs. An approach is also introduced to verify the results using third party IEC 61850 tools and compliant test equipment for commissioning the FR IEDs.

Proper knowledge of tools and configuration procedures is required to commission an IEC 61850 compatible FR system and this paper attempts to address some of these.

ONLINE PARTIAL DISCHARGE TESTING OF POWER CABLES IN NOISE CHALLENGING ENVIRONMENTS

Ammar Anwar Khan - Qualitrol LLC

ABSTRACT SUMMARY – Condition monitoring of power equipment is a key tool to ensure their reliability and safe operation. Partial discharge (PD) detection of underground power cable has been proven as one of the reliable techniques of condition monitoring for the purpose of condition based maintenance of power cables.

Online PD monitoring is a valuable tool to assess the condition of power cables while in service. This paper will present the case studies conducted in different substations with high noise. Detecting partial discharges (PD) is simple when low background noise or interference is present. However, measurements become practically difficult to extract PD signals from noise. Sometimes, PD signals are much lesser in magnitude than the noise or superimposed onto the noise or interference signals making it difficult for simple pulse location algorithms to extract PD signals. Acquiring data at high sampling rate (greater than 100MS/s) and taking the advantage of signal processing techniques, it makes possible to extract PD signals in high noise conditions.

Different de-noising techniques are being discussed in literature, this paper will present the techniques that serve the purpose for successful PD testing of power cables along with their implementation in real substation environment

monitoring underground power networks

Mark Stiles and Merve Cankaya - Black & Veatch

ABSTRACT SUMMARY – Underground electric distribution systems are common in large cities throughout the United States. Power usage for the entire system is typically monitored at the substation, but individual transformers that directly serve a customer or a smaller network are unmonitored. The first notification that a problem exists is often the customers’ complaint. To be immediately aware and proactive, Public Service Electric and Gas New Jersey (PSE&G) installed a Network Monitoring System (NMS) on its 26 kV underground networks to provide a higher quality power distribution system. Using technologies that were proven in the industry to provide reliability and ease of maintenance, PSE&G now has an economical method of improving the reliability, power quality, and efficiency of underground network systems.

The NMS allows PSE&G to monitor the real-time status of all equipment on the network and receive alerts to all events on the network, thereby reducing the number of interruptions by intelligently and proactively managing the equipment on the network and improving response to failures by better understanding failure locations, thus minimizing the length of time to locate the failed component..

protection and control analytics for a reliable grid

Quasim Aziz, P.E and Gautam Sonde; CenterPoint Energy

This paper discusses various opportunities for maintaining a reliable transmission grid using Protection & Controls (P&C) analytics for CenterPoint Energy (CNP). CNP is a combination of gas and electric utility operating under the Electric Reliability Council of Texas (ERCOT) jurisdiction. It serves around 5.2 million customers in the Greater Houston area.

The Greater Houston area, one of the major load centers in ERCOT, interconnects to the Texas transmission grid at 345 kV and 138 kV voltage levels. A combination of local generation and import power from external sources serves the extremely dense load of around 18,000 MW in the area. Nine existing 345 kV import circuits, four from the north and five from the south, are the primary transmission circuits used for importing the external power to meet the growing energy demand of this area. CNP’s P&C system monitors company’s transmission grid and takes corrective actions when needed to ensure safe, reliable and stable electric power transmission.

This paper will focus on analytics surrounding transmission protective relays as a first step towards development of Transmission & Distribution (T&D) P&C analytics. Scope of P&C analytics is shown in Appendix – 1. It will discuss use of analytics to assess system risk associated with protective relays based on asset health and system impact. It will also discuss use of analytics information as basis for developing a holistic P&C asset management strategy such as a relay replacement program. CNP’s vision and framework surrounding development of T&D P&C analytics will also be addressed in this paper. It will also describe application of P&C analytics in mitigating the system risks associated with maintaining a diverse population of protective relays in current compliance environment.

CNP’s protective relay fleet comprises of mostly electromechanical and microprocessor based relays, with a small number of solid state relays. For the purpose of development of P&C analytics, various health assessment parameters have been analyzed and weightages assigned including Mean Time between Failure (MTBF), misoperations, vintage and relay type. System impact due to failure of protective relays is calculated based on station bus configuration, protective scheme and other factors including electrical load at risk, voltage level, station ownership and maintenance repair times. System risk is calculated based on probability of failure and system impact. The methodology and information related to relay life cycles used for development of P&C analytics is based on discussions held at EPRI’s member utilities platform and contribution from CNP’s subject matter experts.

This paper will also describe the use of data integration methodology, smart algorithms and application of latest technology as building blocks during the development of transmission P&C analytics.

Section Title

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Jason Williams

Creative Director

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Emma Swanson

Designer

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Michael Johnson

Developer

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Sarah Miller

Marketing

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