Low-cost monitoring of photovoltaic systems at panel level in residential homes based on power line communication
| Autor: | Jin-Doo Jeong, Sang-Ha Kim, Il-Woo Lee, Jinsoo Han |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry Computer science 020208 electrical & electronic engineering Photovoltaic system Real-time computing Electrical engineering 020206 networking & telecommunications 02 engineering and technology Maximum power point tracking Fault detection and isolation Synchronization (alternating current) Power-line communication Logic gate Grid-connected photovoltaic power system Electronic engineering 0202 electrical engineering electronic engineering information engineering Media Technology ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS Electrical and Electronic Engineering business Voltage drop Voltage |
| Zdroj: | ICCE |
| ISSN: | 0098-3063 |
| Popis: | Panel-level photovoltaic (PV) monitoring localizes abnormal PV panels, enables easy repair, and helps maintain the performance of the PV system. Panel-level PV monitoring system needs to be low-cost so that it can be widely deployed. Synchronization of monitoring time between PV panels is also needed to compare them under the same conditions. Simple fault detection scheme is needed to decide which PV panel is abnormal. For low-cost modules, this paper proposes a low-cost power line communication (PLC) module to monitor four PV panels simultaneously. It can reduce the cost of monitoring modules down to nearly one fourth according to the cost analysis. For time synchronization, a measurement and query scheme is proposed. At the measurement phase, the states of PV panels are measured simultaneously; at the query phase, the measured data are transferred one by one. For fault detection, the mean voltage of PV panels and voltage drop threshold are used. Voltages below the mean by the threshold are considered as abnormal. The proposed system was tested in the real field; it found and localized an abnormal PV panel. The proposed scheme is expected to widely spread the panel-level PV monitoring and help maintain the PV system performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|