As one of the most important energy, power quality is very important to the safe and stable operation of distribution network. According to national standards and evaluation requirements, a power quality evaluation method is proposed based on Minibatch K-Means algorithm and random forest algorithm. At first, abnormal data are processed. Processed data are clustered analysis by Minibatch K-Means algorithm. Imbalance sample is processed for clustering data by SMOTE. At last, labeled data are extracted features by random forest algorithm. The training model is saved. The simulation results show that power quality is evaluated by Minibatch K-Means algorithm and random forest algorithm, which solves the problem that labelless power quality data can't be classified by integrating multiple indexes. It achieves a comprehensive, efficient and rapid evaluation of power quality in distribution network.
KEYWORDS: Data acquisition, Wireless communications, Transformers, Control systems, Calibration, Sensors, Data centers, Standards development, Signal detection, Safety
Traditionally, the voltage and current sampling wiring for the device of low-voltage station area acquisition and monitoring is complex. Furthermore, there are many nodes, and each node is measured by wiring, consequently safety and efficiency have to face great challenges. This paper proposes a new idea of independent voltage and current sampling, using high-precision synchronous time synchronization and high bandwidth wireless transmission technology to promote the miniaturization design of wireless metering devices and smart terminals. It is verified that the synchronous timing accuracy of less than 10us, and the high bandwidth transmission above 1Mbps can be achieved to meet the requirement of 200Kbps. The results show that the ping-pong timing mechanism and broadband wireless technology used in this paper achieve the expected effect. It will improve ubiquitous sensing, data fusion and intelligent application capabilities of distribution equipment at all levels in the future.
According to the security problems caused by the software definition of distribution terminals in large-scale applications, it is of great significance to study the evaluation technology of terminal embedded operating system. This paper defines the architecture characteristics of micro application of distribution terminal by studying the software, establishes a progressive systematic detection system of micro application of distribution terminal, and forms the evaluation index and automatic test scheme of micro application of distribution terminal through the research of consistency verification modelling and test packaging method, which is helpful for the real realization of informatization, digitization and Modernization has certain scientific significance.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.