High Voltage Digital Power Line Carrier Channels 3030583643, 9783030583644

Table of contents :
Preface
Abbreviations
Contents
Chapter 1: Introduction
1.1 Standards and Regulatory Documents
1.2 Structure of DPLC Equipment
1.3 Component Parts of PLC Equipment
1.4 Programming, Control, and Access Functions
References
Chapter 2: Modems of DPLC Equipment
2.1 DPLC Equipment as a Digital Transmission System: Shannon’s Limit
2.2 Modulation and Noise Immunity Technologies
2.2.1 Modulation Technologies
2.2.2 Channel Encoding Methods
2.2.3 Methods for Compensating Distortions of the HF Path Frequency Response and Phase Frequency Response
2.3 DPLC Modems Bit Rate
2.4 Dynamic Bit Rate Adaptation
2.5 Time Delay in Transmitting Information
2.6 Peak Factor of Modulated Signal
2.7 Comparison of Single-Carrier and Multi-carrier Modulation Methods Applied to DPLC Systems
2.8 Wideband Modems Based on DMT Modulation
References
Chapter 3: Multiplexers and Network Elements of DPLC Equipment
3.1 Multiplexers
3.1.1 Typical Schemes for Multiplexer Application in DPLC Equipment
3.1.2 Processing of Speech Signals. Low Bit Rate Speech Codecs
3.1.3 Prioritization of Information Signals
3.1.4 Transit of Information Signals
3.2 Network Elements
3.2.1 Structure of DPLC Equipment Network Element
3.2.2 Filtering and Prioritizing Network Traffic
3.2.3 Header Compression
3.2.4 Payload Compression of Data Packets
3.2.5 SNMP Monitoring of DPLC Equipment
References
Chapter 4: Features of Frequency Characteristics of the HF Paths
4.1 Features of Attenuation Frequency Dependences of the HF Paths
4.1.1 Brief Information About Modal Parameters
4.1.2 Frequency Response of the Line Path Without Considering Multiple Reflected Waves
4.1.3 Effect of Reflected Waves
4.1.4 Effect of Weather Conditions
4.1.5 Effect of Switching of Power Lines
4.1.6 Frequency Response of the HF Path with HF Bridge
4.1.7 Features of Frequency Response of the HF Path Along Double-Circuit Overhead Lines
4.1.8 Frequency Response of the HF Path Along Cable and Cable-Overhead Power Lines
4.2 Return Loss and Input Impedance of the HF Paths
4.3 Characteristics of Disturbances in the HF Paths
4.3.1 Corona Noise
4.3.2 Transient Disturbances
4.3.3 Narrowband Interferences
References
Chapter 5: DPLC Channel Design Issues
5.1 Main Tasks of the DPLC Channel Designing
5.2 Types and Characteristics of DPLC Information Traffic
5.3 Information Interaction in Electric Grid
5.4 Types of DPLC Channels
5.4.1 DPLC Channel with Time Division Multiplexing of Information Signals
5.4.2 DPLC Channel with Time Division Multiplexing of Information Signals and Packet Traffic Transmission
5.4.3 DPLC Channel with Packet Traffic Transmission
5.5 DPLC Channels with Transit Stations
5.5.1 The Simplest Model of DPLC Channel with Transit Stations
5.5.2 Limiting Transit Sections Based on the Delay and Speech Transmission Quality Criteria: Characteristics of Speech Codecs
5.6 Providing Reliability of DPLC Channels when Selecting Operating Frequencies
5.6.1 Calculation of the PLC Channel Overlapped Attenuation
5.6.2 Required Attenuation Margin
5.6.3 Application of Accurate Calculation Methods for HF Path Parameters
5.6.4 Providing EMC of APLC and DPLC Channels Operating in One Electric Grid
5.7 Design of DPLC Channels with Bit Rate Adaptation
5.7.1 Purposes of Use of DPLC Channels with Bit Rate Adaptation
5.7.2 Calculation of the PLC Channel Maximum Allowable Frequency
5.7.3 Long-Term Monitoring of DPLC Channels
References
Annex No. 1. General Description of WinTrakt and WinNoise HF Path Calculating Programs
Index