Wan-Ki Park

Smart home energy management system including renewable energy based on ZigBee and PLC

As home energy use is increasing and renewable energy systems are deployed, home energy management system (HEMS) needs to consider both energy consumption and generation simultaneously to minimize the energy cost. This paper proposes a smart HEMS architecture that considers both energy consumption and generation simultaneously. ZigBee-based energy measurement modules are used to monitor the energy consumption of home appliances and lights. A PLC-based renewable energy gateway is used to monitor the energy generation of renewable energies. The home server gathers the energy consumption and generation data, analyzes them for energy estimation, and controls the home energy use schedule to minimize the energy cost. The remote energy management server aggregates the energy data from numerous home servers, compares them, and creates useful statistical analysis information. By considering both energy consumption and generation, the proposed HEMS architecture is expected to optimize home energy use and result in home energy cost saving.

Green Home Energy Management System through comparison of energy usage between the same kinds of home appliances

Home Energy Management System (HEMS) is a technology to reduce and manage home energy use. The feedback on energy consumption to energy users is known to be effective to reduce total energy use. A typical HEMS just shows the energy consumption of the whole home and home appliances. Users cannot figure out how efficient a home appliance is, compared to the others. So it is necessary to compare the energy usage of home appliances to that of the same kinds of home appliances. In this paper, we propose a green HEMS based on energy comparison.

PLC-based photovoltaic system management for smart home energy management system

As energy consumption in residential areas is rising, residential homes have deployed a photovoltaic (PV) system to save energy cost. The PV system needs to be continuously monitored to maintain its appropriate performance. In addition, it is desirable to monitor each PV module because one abnormal PV module affects the whole PV system. In this paper, the power line communication (PLC) compliant with HomePlug is adopted to monitor each PV module. The system architecture is composed of three components: PLC modem, renewable energy gateway (REG), and smart device application. The PLC modems are deployed on each PV module and monitor it. The REG aggregates and stores the monitored data from the PLC modems and the inverter. The smart device application retrieves the stored data from the REG to inform users of the status of the PV system. Users can browse and figure out the PV system performance in detail. The proposed system is installed in the field that is composed of sixteen 210W PV modules and a 3kW inverter. This scheme will maintain the performance of a PV system and contribute to enhancing home energy management system.

An implementation of FTTH based home gateway supporting various services

HG (home gateway) is an interface device that connects an access network, WAN (wide area network), to a home network. FTTH (fiber to the home) based HG is an HG with FTTH network as an access network interface. In this paper, we propose an implementation of FTTH based HG, specially EPON (Ethernet passive optical network) based HG. With the FTTH access network interface, the proposed HG can provide service bandwidth of 100 Mbps to 1 Gbps to each subscriber. The amount is enough bandwidth to provide various home network services for each one. Our proposed HG has a novel architecture with various home network interfaces and can use efficiently the abundant bandwidth for the various services.

Smart office energy management system using bluetooth low energy based beacons and a mobile app

This paper describes a smart office energy management system (SOEMS) that can reduce the energy consumption of PCs, monitors, and lights in an office environment through the use of a mobile app and Bluetooth Low Energy based Beacons (BLE Beacons). BLE Beacons placed at several places in an office and a mobile app are used to determine whether a user enters or exits the office to change the power saving mode of the users PCs, monitors, and lights. The proposed system can reduce energy consumption in the office without causing user inconvenience.

A study on the use cases of the smart grid home energy management system

This paper describes standard model for Home Energy Management System (HEMS). It is presently absence from the requirement of the service and standard model. Generally HEMS provides energy management consulting service based on digital home environments and defines the essential requirement. It also provides the guideline of the related technology development and infrastructure. We proposed the use cases and the communications requirement that component of devices and interface for home energy management system.

An Implementation of the Broadband Home Gateway supporting Multi-Channel IPTV Service

Home gateway (HG), called residential gateway (RG) in other words, is a device that interconnects various home electronic devices to one another as well as connects these private home network devices to exterior public network. There are various types of digital home services in IP (Internet protocol)-based home network system; data service, entertainment service, security service, home automation service and so on. Multimedia related service, especially IPTV (Internet protocol television) service, is the attractive one to customer in these home network services. In this paper, we show the implementation of the broadband home gateway supporting multi-channel IPTV service. The proposed and implemented home gateway has an architecture that can provide multi-channel, more than three channels, HD (high definition) class IPTV service with 20 Mbps (megabits per second) bandwidth for each channel. For the improved IPTV service using IP multicast, the proposed HG uses Internet group multicast protocol (IGMP) proxy and IGMP snooping protocol. The proposed HG consists of two main components, system processor for NAT (network address translation) processing and system software functions and an L2 (layer 2) Ethernet switch to interface access network and network distribution in intra-home network. The multicast packets for the multi channel IPTV service go from ingress port for access network interface to egress ports for home network directly based on L2 multicast MAC (medium access control) table in L2 Ethernet switch without via the system processor of the HG. This paper specifies in detail the system structure and implementation of hardware, firmware and software for the proposed HG

Proactive energy management system architecture interworking with Smart Grid

Most of the energy management systems only implement monitoring and statistics of energy data which is collected from smart meter or consumer electronics. Under these energy management systems, people should manually control each device to reduce energy consumption. Moreover, The Smart Grid Technology requires more complicated and smart energy management system such as demand response related energy load control, renewable energy management, micro power exchange system. This paper will focus on architecture of energy management system for interworking with smart grid system. We have already developed energy management system for green-home and green-building, which has various monitoring and analysis functions about power consumption of home-appliances and building facilities. We are going to implement the smart grid interworking functions based on architecture concept which introduced in this paper.

The architecture and implementation of proactive Green Home Energy Management System

Green Home System is developing under three major concept such as passive, active house and integration technology. Normally HEMS(Home Energy Management System) is active and integration technique merging IT and Energy technology. But currently most HEMS has only smart metering device and interact with Electric Power Supplier. Proposed Green HEMS provides low-powered wireless energy monitoring and transferring data system and various energy usage models with analysis and statistics functions. Moreover our HEMS monitors electric power (watt-meter) and usage (watt-hour meter) for each target devices Proposed Green HEMS can more proactive energy saving chances and changes your house into green home.

A Home Energy Management System for Energy-Efficient Smart Homes

As the carbon dioxide emission and global warming become the world serious issues, many researches are performed to reduce the energy consumption. Therefore, there are many new devices for energy saving scheme in the smart home area, such as smart plug, AMI, and IHD. Using them, users can recognize and reduce the amount of energy consumption, and the appliances can be controlled considering the energy efficiency. In this paper, we propose a home energy management system for an energy-efficient smart home. First, the data of energy consumption for a smart home is collected and analyzed. And energy conservation measures are generated and performed while maintaining comfort of users. Using these methods, energy management services for smart homes can be provided more easily and efficiently.