- Full-Scale Operations of a Supply and Demand Adjustment CEMS and a Peak Demand Reduction CEMS
One of the central themes of the Next-Generation Energy and Social System Verification Experiment Project being led by the Ministry of Economy, Trade and Industry is CEMS (Community Energy Management Systems). This represents an attempt to optimize the supply and demand of energy within an entire community by carrying out the integrated control of EMS (Energy Management Systems) installed in consumer households with the use of DR (Demand Response). Taking the changes in societal conditions after the Great East Japan Earthquake into account, the verification experiments being implemented by the Kansai Science City have been narrowed down to using a Supply and Demand Adjustment CEMS and a Peak Demand Reduction CEMS as the CEMS project models. Full-scale operations were started in fiscal 2013, and the results of this and subsequent topics for attention are now becoming clear.
- BEMS Linked to CEMS Support Demand Response
Verification experiments into Demand Response (DR) linked into a CEMS (Community Energy Management System) was carried out in the summer of 2013 in the Keihanna Plaza, which houses tenants, a hotel and an event hall, etc. In addition to predicting electricity demand, BEMS (Building Energy Management Systems) monitor electricity consumption, the amount of electricity generated by solar power systems and the amount of electricity recharged/discharged from storage batteries for the entire building in order to establish optimal control over energy-related equipment based in DR requests. Tenants are also called upon to reduce electricity consumption by 5%.
- Shifting EV Recharging to More Suitable Time Periods with DR
The Keihanna Eco-City Next-Generation Energy and Social System Verification Experiment Project is moving ahead with a verification experiment in which the cooperation of consumers is obtained and the supply and demand of energy optimized for the entire community with CEMS (Community Energy Management System). Although EVs (Electric Vehicles), the distribution of which is expected to become more widespread in the future, have an enormous effect on reducing the burden on the environment, they also place a large burden on the power grid if recharging times are concentrated within the same period. An initiative to shift the recharging times to more suitable times with the use of Demand Response (DR) issuance that links the EV recharge management systems with the CEMS is being implemented, and the effects of DR and subsequent topics for attention are now becoming clear. In particular, it was discovered that the length of the time period in which requests are issued is more important than the amount of points awarded when it comes to the effect DR has on restraint.
|Name of city||Kansai Bunka Gakujutsu Kenkyu Toshi (Kansai Science City)|
|Area||1.541 million Km2(as of April 2012)|
|Population||244,872 (as of April 2012)|
|Locations for operational experiments||The Seika and Nishi Kizu districts (Kyotanabe City / Kizugawa City / Seika Town, Kyoto Prefecture)|
|Area covered by operational experiments||77,370km2(as of April 2012)|
|Population of areas involved in the operational experiments||102,024 (as of April 2012)|
|Number of households involved in the operational experiments||Introduction of HEMS: 14 households; Introduction of systems to render energy use visible: approximately 100 households; Power demand response (DR): Approximately 700 households (all as of April 2012)|
|Number of workplaces involved in the operational experiments||Introduction of BEMS: One facility (Keihanna Plaza; as of April 2012)|
|Number of EV/PHV involved in the operational experiments||60 (as of April 2012)|
Characteristics of the region
Kansai Bunka Gakujutsu Kenkyu Toshi (Kansai Science City) is situated in a hilly region that spans three prefectures (Kyoto, Osaka, and Nara Prefectures) and is the location of eight municipalities. It is a new city constructed by a national project to serve as a center of culture, learning, and research, a new cultural capital intended to open paths into the future. In addition to the Advanced Telecommunications Research Institute International and the Kansai-kan of the National Diet Library, the city is home to a large number of company laboratories and other research institutes, and possesses strong technological and communications capacity.
Overview of the project
In addition to its research institutes, universities, companies and other institutions, Kansai Science City is proceeding with a large-scale housing development, making it the ideal location for testing and verifying the outcomes of research on advanced technologies and new social systems in cooperation with residents. Making full use of this environment, the project seeks to develop a Community Energy Management System (CEMS) that will minimize CO2 emissions without affecting quality of life or convenience for residents, looking towards the construction of a next-generation energy society. Beginning with assisting in recovery from the Great East Japan Earthquake, the project will extend the developed model to the rest of the world.
The optimization of energy supply and demand on a global scale. Realization of this goal will involve the development of systems including a Community Energy Management System (CEMS) for comprehensive management of energy in the community, a Home EMS (HEMS) to manage energy supply and demand in the home, power demand response (DR) for energy management including large-scale DR, a Building EMS (BEMS) to manage energy in buildings, an electric vehicle (EV) charging management system, and V2X (Vehicle to X). The linkage of these systems with the grid power. Specifically, in homes and buildings,
we will conduct Demand Response linking the CEMS to HEMS, BEMS, and EV charging management centers in order to verify the effect in saving energy and reducing CO2 emissions. In the EV charging management system, we will verify the peak shift effect to be obtained from deriving the charging location and time from the location of the EV and the remaining power in the storage batteries. In the area of V2X, we will verify the use of EV storage batteries in relation to the supply and demand of power to factories. Based on the outcomes, we will create a business around the Keihanna Eco City Model, and extend it to the reconstruction of cities in the Tohoku area and promote its application in the rest of the world.
Subjects of the operational experiments
CEMS, HEMS, power DR, BEMS, EV management system, V2X