My google search: From Kinetrics website:
Originally Posted by http://www.fcw.com/article91102-10-17-05-Web
Broadband-over-power lines (BPL) technology, which transmits radio frequency waves via electrical lines to deliver high-speed Internet service, works exceptionally well, but might not be a panacea for rural or remote places, a technology expert said.
Alan Shark, executive director of Public Technology Institute, the technology arm of several national associations of cities and counties, said the recent deployment of BPL across Manassas, Va., provides residents and businesses there a third affordable choice beyond DSL and cable service.
He said government agencies can use the new technology to do the following: develop certain applications they currently cannot make, such as pinpointing outages across their electrical grid; get centralized control of their traffic signals; operate video surveillance systems; and develop Wi-Fi hotspots in certain areas, among other things.
However, Shark, who has previously served as executive director of the Rural Broadband Coalition and president and chief executive officer of the Power Line Communications Association, said BPL might not be the answer to providing Internet service to rural or remote areas where traditional telecommunications providers have been reluctant to make investments. He said BPL is basically touted as a last half-mile solution.
Shark said you need repeaters along the electrical conduit every few hundred feet so the service isn’t degraded, but that might be too expensive a proposition for BPL providers. He said there might be hope for areas where there is a cluster of homes or some density. He also said newer technology that reconstitutes the signal for its entire trip is available, but might also still be too expensive.
Walter Adams, a vice president of new technology at Chantilly, Va.-based Communication Technologies, which is providing BPL service in Manassas, said there would be a degradation of service. “But it’s a question of what kind of service is good enough to someone who has no service,” he said.
Even if you start at 20 to 30 megabits/sec and the speed decreases to 300 to 500 kilobits/sec, customers might still benefit, he said. Otherwise, they may have to pay a lot more for satellite service.
He said the picture is getting better every day, but no mass market economy in terms of BPL equipment and customers exists yet. But Communication Technologies is in conversations with nine other utility companies nationwide that could potentially provide BPL access to several million customers.
Adams and Shark also said that this industry lacks standards, and many vendors are deploying or testing their own proprietary solutions. Shark said the nonprofit Institute of Electrical and Electronics Engineers is working on a standard, but it could also happen through market dominance by one vendor that breaks out of the gate and deploys it everywhere.
Power Line Communication (PLC) is a rapidly emerging technology providing communication links over existing power transmission and distribution networks. The development of PLC technology over the last decade has been accelerated by market deregulation, which has forced power utilities to explore new business opportunities.
The electric power grid has a unique feature in that it constitutes an existing infrastructure networked to billions of private customers as well as businesses. At the same time, it is a large-scale, as well as very integrated infrastructure: crossing the boundaries of homes and buildings, to individual wall outlets, home appliances and electrical equipment.
The PLC development has been focused on providing energy services within existing sector boundaries, but with new forms, features and scales. Examples are remote metering, remote billing, demand-side management, distribution automation and control from a distance. Other examples of new value-added services are remote security for home and office, intelligent energy and equipment cost- saving services, and ‘smart’ home automation.
Most currently available PLC technologies are not able to send and receive data signals through the local distribution transformers. The few that do typically require installation of expensive equipment either at the utility substation or elsewhere on the grid.
Kinects® PLC technology is an innovative low-cost way of sending digital data. The Kinects® transceiver, which can transmit and receive data, is housed in a small box the size of an ordinary modem. Simply plugging it into a regular electrical outlet not only provides power to the unit, but also connects it to the power lines, which it uses to send and receive data signals. Unlike other PLC type systems, these signals pass through the local distribution transformer and travel along the high-voltage distribution lines. With this technology, data can be sent over 30 km at a baud rate of 0.5 bits/second, which is more than adequate for numerous applications.
Two key technological advances from Kinectrics have made this breakthrough possible. The first is a special signal transmitter, which achieves high levels of energy efficiency when driving an ultra-low impedance load. Using a patented system having a resonant network and micro-controller, strong signals can be transmitted into the low impedance power line using a minimal amount of energy. The second technical achievement is in the receiver that uses a patented digital algorithm to decode data from the received signals. This enables a much higher signal-to-noise ratio, and also prevents interference from power line harmonics.
With nothing other than an inexpensive transmitter and receiver connected to existing power lines, Kinects® PLC System can send/receivedata and control signals. By using the existing infrastructure, equipment costs are kept to a minimum. This technology is ideal for automated meter reading, load control, remote disconnect/reconnect, and power quality monitoring. Non-utility applications would include security, lighting, traffic signal, and remote monitoring.
Utilities / Energy
* Automatic meter reading (AMR)
* Line monitoring
* Remote load control
* Remote disconnect / reconnect (RDR)
* Transformer tap changer
Traffic lights, display
* Emergency call station
* Transportation display
* Railway signaling
* Lighting – street, airport, warning beacons
* Security systems
* Remote monitoring – equipment, devices
Vending machines, photocopiers, etc.
Technical / Commercial Advantages
* Complete communication package in transceivers. No additional hardware required on the grid or substation to transmit and receive data.
* Proprietary technology – firmware and signal control topology
* Bi-directional communication through distribution transformer
* Inexpensive hardware allows lower cost / smaller number of users
So, I guess we all had better get used to the idea of big isolation transformers and power balancing for our systems.
ha!@ "Remote monitoring-equipment, devices! Whatever that means!!