Recent Advances in Electrical & Electronic Engineering - Volume 14, Issue 5, 2021

Background: Microgrid is an effective integration mode of distributed generation (DG). It can eliminate the negative effect caused by the intermittent DG and consume the energy locally. Methods: For a public distribution network, a microgrid performs as a controllable and flexible unit. However, when the public distribution network has the demand of flexible regulation, there is no reasonable quantitative indexes to eval Read More

Background: Correct classifying of analog circuit faults is helpful in the health management of the circuit. It is difficult to be implemented because of the lack of proper feature extraction methods and accurate fault diagnosis models. Objective: T-SNE based core components extraction method and PSO-ELM-based fault diagnosis model are presented to improve the diagnostic accuracy of analog circuit fault diagnosis. Methods: F Read More

Background: Lightning electromagnetic pulse (LEMP) and high-altitude electromagnetic pulse (HEMP) are widely described by three physical parameters (rise time tr, full-width at halfmaximum pulse width tw, and maximum electric field strength E0). These pulse shapes are often given by a double exponential form concerning four mathematical parameters, namely α, β, k and Ep. Objective: The transformation from physic Read More

Background: Phasor Measurement Unit (PMU) Data Manipulation Attacks (PDMA) can change the state estimates of power systems and cause significant damage to the smart grid. So it is vital to research a method to detect it. Objective: In this paper, we propose a detection mechanism and model for PDMA. Method: Firstly, the distribution's characteristics of Phasor Data Concentrator (PDC) and PMU are analyzed, and we Read More

Background: In the power Internet of Things (IoT), power consumption data faces the risk of privacy leakage. Traditional privacy-preserving schemes cannot ensure data privacy on the system, as the secret key pairs shall be shared between all the interior nodes once leaked. In addition, the general schemes only support summation algorithms, resulting in a lack of extensibility. Objective: To preserve the privacy of power Read More

Background: The traditional state-based non-intrusive load monitoring method mainly deploys the aggregate load as the characteristic to identify the states of every electrical appliance. Each identification is relatively independent, and there is no correlation between the identification results. Objective: This paper combines the event detection results with the state-based non-intrusive load identification algorithm to improve ac Read More

Background: With the applications of wireless sensor network technology, threedimensional node location technology is crucial. The process of node localization has some disadvantages, such as the uneven distribution of anchor nodes and the high cost of the network. Therefore, the mobile anchor nodes are introduced to effectively solve accurate positioning. Objective: Considering the estimated distance error, the received Read More

Background: In the contemporary world, the use of energy, especially electrical energy, is increasing rapidly. Without this power, modern civilized life cannot think for a moment. Thereby a huge amount of electrical energy is needed. We have to generate a considerable amount of electricity to meet the growing demand maintaining necessary conditions and constraints. A rapid divergent strategy called Economic Load Dispatch Read More