Second Wind - Solutions - Translate Legacy Protocol with the Phaser

Translate Legacy Protocol with the Phaser^®

Host Protocol Converter

Second Wind can provide state-of-the-art distribution automation solutions that don't require replacing existing equipment. We interface to legacy communication systems, adapt to utility-specific SCADA equipment and practices.In short, we adapt the solution to the customer and not the other way around.

In the depicted application the utility wanted to add an entire tier of feeder monitoring and supervisory voltage regulation control to its large, mature SCADA system. They needed an upgrade that would work with the existing centralized SCADA database, leased lines, venerable protocols, and various generations of substation gear. Also desired was ready adaptability to planned changes - T1 replacing the leased lines, NT workstations replacing the old RTUs, etc.

Second Wind responded with an array of Phaser^®-based innovations tailored to the utility's requirements. We provided custom magnetic latching relay I/O for implementing supervisory LTC blocking and reduction at each feede. We supplied built-in fiber interfaces to eliminate the need for fiber modems.

The biggest obstacle to phasing in feeder monitoring was integrating the large amount of new data into the existing SCADA system. There was little or no capacity left on most station RTUs. The leased line communications backbone used the old bit-oriented CDC protocol, which imposed major throughput and "point" limitations.

We overcame these with a Phaser variant called the Host Protocol Converter (HPC). The HPC communicates by Modbus with the Phasers distributed around the switchyard and reformats the data into the customers' RTU data structures. The HPC posed as one to three new RTUs depending on the quantity of new data, sharing the leased line with the existing RTU. A built in 202T modem connected to the existing telephone interface by a transformer bridge. The modem was field-exchangeable with an isolated RS232 port as the substations were converted to an intranet backbone.

Second Wind provided whatever was needed to make the program work. We developed firmware in the HPC to arbitrate between block and reduce command originating from different groups in the utility. We provided PC-based utilities to configure the HPCs, produce complete data maps to the database group, simulate test sets, and collect equipment configurations by laptop. The customer has the data they need, and is able to continue upgrading SCADA hardware and softare, confident that Second Wind equipment will meet the challenges of new configurations.


	Remote Wind Data Collection
	Power Performance Testing
	Integrating Met Data into Windfarm SCADA
	Autopilot Windfarm Control
	Forecasting Windfarm Production
	Windfarm Substation Monitoring
	Windfarm FAA Lights Monitoring
	Windfarm Output Curtailment
	Turbine Control and Monitoring with the Phaser
	Paralleling Transformers with the Phaser
	Measure Electrode Usage with the Phaser
	Translate Legacy Protocol with the Phaser
	Encoderless Tap Position Reporting


	Phaser Variant Acts as RTU (pdf)