This is a condensed article taken from an original posted in T&D World.
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WEEZAP and LYNX are controllable switching devices employed to improve the efficiency of an electricity network. A major trial called “Smart Street” is currently being carried out by ENW using these two devices.
The WEEZAP is a retrofit-design LV vacuum circuit breaker, supplied by Kelvatek — can be installed in conjunction with the Kelvatek GATEWAY device, which communicates with Electricity North West’s supervisory control and data acquisition system as well as relays various controls and monitoring to and from the WEEZAP devices. The GATEWAY also acts as the on-site user interface for installation, configuration and control. Each GATEWAY can manage up to 15 devices; and as two GATEWAYs can be installed in a single substation, a maximum of 30 devices can be installed at any one site.
The LYNX vacuum switch, manufactured by Kelvatek, is designed to fit into an existing standard underground link box, with a modified bell housing surround to prevent water ingress. The LYNX enables the interconnection of LV circuits as well as advanced monitoring capabilities. It is designed to open and close LV circuits at the link box either manually or remotely. The LYNX communicates with the GATEWAY device, providing a remote connection to the installed devices, which enables remote monitoring and control by the network management system.
Remote terminal units from CG Power and Industrial Solutions Ltd. act as a data concentrator and router, collating the information from the WEEZAP, LYNX, end point monitors, and HV and LV capacitor banks, passing it on to Spectrum Power 5 and the control room management system, as appropriate.
Electricity North West’s existing network management system and control room management system communicate with the optimization software through an inter-control communications protocol that was developed specifically for the project. This enables all network configuration commands and alarms to be controlled by the network management system, which is overseen by trained control engineers.
Since the funding was awarded in November 2013, Electricity North West and its Smart Street partners have followed a strict timetable. From mid-2015 to January 2016, all the new technology equipment designed and specified for the project was installed and commissioned, a total of 775 new installations. The Smart Street project was commissioned and in operation in January 2016 for the trial period, which goes through January 2018.
The technologies installed were identified and investigated prior to the project bid submission; therefore, the requirements and specifications for the equipment were defined at a high level. This provided direction for the project delivery team to procure the necessary technologies to realize Smart Street.
The relationship between Electricity North West and its Smart Street partners has been key to meeting project milestones and further developing the new technologies involved. The commitment and buy-in from project partners has been essential to the successful implementation of Smart Street.
Electricity North West now expects to continue working with its project partners and manufacturers to further develop the technologies deployed throughout the project life.