Tap into the minds of some of our brightest with this list of articles and papers published by NOJA Power. Our revolutionary design comes from some of the best in the industry, and sharing ideas sparks the innovation which we strive for.
Industrial automation has been around for many years, in the realm of fast local connections controlled within a small network. IEC 61131-3 has been extensively used for logic implementation in PLC, but it is the advent of IEC 61499 and event based logic processing that we have seen a proliferation in usage of IP based distributed control.
With the growing capabilities of IP based communications for pole top switchgear within utilities it seems a natural progression to allow for distributed logic to be executed across a distribution network as a whole, using the current communications medium and framework as the transporter and a VPN for security. This paper explores the new capability of using IEC 61499’s logic design in pole mounted reclosers to create customised distribution automation and smart grid capabilities without the need for master station control. By sharing the hardware requirements across an entire network of recloser controllers, it is possible to create elegant and responsive algorithms to improve network reliability.
Access to IEC 61499 application design and implementation allows for improved integration in IEC 61850 schemes for recloser control. IEC 61499 offers expanded portable configuration options with information links through definable Dynamic Data Type objects available for access by both protocols in a centralised database within a controller. This paper outlines the capabilities and future applications of IEC 61499 in the world of pole mounted reclosers. As Australian utilities look for the best return in their capital equipment, this new implementation allows for the optimisation of switchgear for maximum return and value for distribution network operators.download
There is global momentum to diversify electricity generation sources for economic, environmental and security reasons. “Distributed generation” (DG) enables more companies to enter the electricity market stimulating competition, encourages the development of renewable energy (RE) and limits the impact of events such as cyber attacks. However, conventional electricity distribution networks are poorly matched to the needs of DG because they were designed to meet the demands of large generating capacity sited close to population centres.download
The advent of the microprocessor protection relay within a recloser controller has allowed the introduction of a significant number of new protection features and functionality. In parallel to these enhancements the recloser switch has transformed into an extremely reliable switch which operates in a significantly faster time based on the use of the current technology of a vacuum interrupter with an optimised magnetic actuator.download
Abstract: The electric vehicle (EV) has been subject to rapid development by major automakers and modern EVs are capable of completing 85 percent of typical journeys on a single charge. This, together with reductions in the purchase price, is making the EV an increasingly practical alternative to a conventional vehicle leading to significant growth in the size of EV fleets over the next few decades.download
Colombian utilities are using cellphone infrastructure to communicate with remote electricity distribution automation and improve quality of service.
Colombia is experiencing rapid industrial development. As a result, the electricity demand of both multinational and local companies is escalating, requiring power companies to increase production while at the same time trying to maintain their sustainability and quality-of-service obligations.
Meeting these demands can be achieved if electricity distribution networks are equipped with intelligent distribution automation to improve supervision, control and internal quality standards while satisfying Colombian regulations. Such networks are known as “smart grids”.
This document describes two successful implementations––developed by PTI S.A. and the company’s represented brands––of distribution automation systems for smart grids, integrated to a control system utilizing the public cellphone networks to enable operators to monitor and control the systems.download