Simple Communication Method Research Articles

Modified distance protection for transmission line with hexagonal phase-shifting transformer

Phase-shifting transformers (PSTs) provide an economical solution to control the power flow in the electric grids. However, the PSTs vitiate the conventional protection system applied. This paper studies the impact of the delta-hexagonal phase-shifting transformer on the performance of the distance protection relays for the transmission lines. Modified distance protection formulas are derived for both phase and ground faults. The proposed method uses the local measurements at the relay point and does not require voltage or current measurements from a remote substation. Alternatively, the tap position of the phase-shifting transformer is the data needs to be shared between substations which can be accomplished using a simple communication method. The proposed method is evaluated on a simulated transmission line using MATLAB/Simulink packages. The results show the ability of the proposed method to compensate for the PST effect on the distance protection relays.

A Secure Data Transmission in VANETs using HC12

Vehicular ad hoc networks (VANETs) is an Intelligent Transportation System and a part of MANETS. VANETs communication is wireless between vehicles and different nodes along the road to increase efficiency and human safety. VANETs embedded all the features of MANETs and almost any Ad Hoc Network. We have discussed various features of VANET and different types of attacks, since the VANET communication is open in nature; they are prone to various types of attacks. Although various attractive features, VANETs also face some challenges like communication with different types of nodes and sensors and gather information or data. Our major focus is on securing this data or information sent by the sender node before transmitting on the network to another node in the network. We intend to solve this by using a wireless LoRa module and cryptography algorithm like ECDH for secure data transmission and solve the security risks and privacy problems. Our work discusses VANET communication method and structure. We provide a simple communication method using P2P topology method and ECDH cryptographic algorithm for keeping the data secure.