High Voltage Broadband Powerline Communication Device
Solution Overview
Problem
Current communication technologies for electrical utility substations, such as fiber optic cables and wireless connectivity, are costly and labor-intensive, and existing power line communications methods lack the bandwidth needed for advanced smart grid applications, particularly in harsh electrical environments.
Innovation Solution
The implementation of High Voltage Broadband over Powerline (HVBPL) technology, which uses the electrical grid for communication, offering higher frequencies and data rates, and incorporates noise cancellation and link aggregation techniques to maintain signal stability and availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional communication technologies (fiber optic cables, wireless connectivity) are used for substation communications, then communication reliability is improved, but installation cost and complexity increase
Solution Approach 1:
The existing high voltage power lines are made to serve dual purposes: power transmission and data communication. By implementing BPL technology, the power lines become a multi-functional medium that eliminates the need for separate communication infrastructure, thereby reducing installation complexity while maintaining communication reliability
Solution Approach 2:
The power line communication system uses the existing power infrastructure to provide both power and communication services. The system leverages the already-deployed high voltage lines, transforming them into self-sufficient communication channels without requiring additional external communication networks or infrastructure
2Ease of manufacture
If existing power line communications (PLC) are used for substation communications, then installation cost is reduced, but bandwidth is insufficient for smart grid applications
Solution Approach 1:
The system transitions from narrowband PLC to broadband BPL technology, changing the frequency parameters and data transmission capabilities. This parameter change enables the power lines to carry significantly higher data rates and bandwidth, supporting advanced smart grid applications while maintaining the ease of installation provided by using existing power infrastructure
3Quantity of substance
If BPL technology is deployed over high voltage transmission lines, then bandwidth is improved, but signal stability deteriorates due to harsh electrical environment
Solution Approach 1:
The system acknowledges the harsh electrical environment of high voltage lines but converts this challenge into an advantage by using the same lines that carry power. The BPL technology is specifically designed to operate in this environment, transforming the potential harm of electrical interference into a robust communication channel that leverages the unique characteristics of high voltage transmission lines
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
HVBPL provides a cost-effective, high-bandwidth communication solution that expands network coverage, enhances power quality and grid reliability, and supports advanced smart grid applications, including digital protection and video surveillance, while reducing installation time and costs.
Implementation Method 1
a broadband modem configured to present an outgoing signal to an impedance matching circuit
Implementation Method 2
an impedance matching circuit configured to connect at one end to a high voltage line arrester of a high voltage power line
Implementation Method 3
a noise blanker circuit coupled at a first end to another end of the impedance matching circuit and configured to connect at a second end to a broadband modem
Data Source
AI summary
A communication device for use on high voltage power lines provides for broadband communications over such high voltage power lines. The device has an impedance matching circuit configured to connect at one end to a high voltage line arrester of the high voltage power line, as well as a limiter circuit coupled to the other end of the impedance matching circuit to limit a voltage associated with a broadband signal. A noise blanker circuit is coupled at one end to this other end of the impedance matching circuit and is configured to inhibit presentation of a time delayed incoming signal to the broadband modem upon detection of electrical noise. The communication device can further comprise link aggregation and/or a differential circuit for providing non-inverted and inverted broadband signals for both reception and transmission. A corresponding method of communicating broadband information over a high voltage power line is disclosed.