Abstract
Power line carrier communication (PLC) is one of the important technologies to construct and realize ubiquitous power Internet of Things, while the degree of network matching severely affects the communication quality of the network. Combined with the actual topology of a medium voltage (MV) distribution network, the transmission line theory is used to derive the impedance matching relationship between the two slave nodes in the master-slave network mode. Based on this, a matching optimization method for the carrier communication of MV distribution Internet of Things based on network looseness is proposed. Firstly, a large complex distribution communication network is selected and divided into several small impedance-matching networks according to the network looseness on the trunk lines. Then, in each region, the particle swarm algorithm is applied for matching coordination to avoid power wasting and impedance mismatching among multiple communication nodes. The coordinated matching method has fast optimization speed and strong portability, and its feasibility and effectiveness are verified by theoretical derivation, simulation and laboratory test results, which provides an important theoretical basis for the planning, design and popularization of PLC technology in the ubiquitous power Internet of Things.
Highlights
The proposal of ubiquitous power Internet of Things indicates that China is marching forward towards the world first-class energy Internet, while its realization requires advanced information technology, communication technology, intelligent technology and other resources to provide sufficient and effective data information
Our method provides a theoretical basis for the planning, design and popularization of Power line carrier communication (PLC) technology in the ubiquitous power Internet of Things
In order to test the response of the network looseness WSi of the node i to the upstream network matching complexity, a network looseness comparison of the networks with same topology but a different line type is made, demonstrated in Figure 4, where the curve in blue is the result of overhead-cable hybrid line and the curve in red represents the result of the pure overhead line
Summary
The proposal of ubiquitous power Internet of Things indicates that China is marching forward towards the world first-class energy Internet, while its realization requires advanced information technology, communication technology, intelligent technology and other resources to provide sufficient and effective data information. The efficient, fast, flexible and economical communication network is the key to realize ubiquitous power Internet of Things. Many means of technologies, such as optical fiber, carrier and wireless communication, The associate editor coordinating the review of this manuscript and approving it for publication was Rongbo Zhu. are adopted in the DIoT network. Wireless communication is flexible and convenient, but it has the problems of uncertainty of information delay and poor reliability. The PLC using ready-made electric power network as a communication channel greatly saves the investment for its natural network channel resources and flexible convenience in application. As the compensation and extension to the optical communication, it is important in the construction and realization of ubiquitous power Internet of Things [1]–[3]
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