July 26, 2012
We have received an order for assigned research for verifying introduction of the Smart Energy System, which was advertised by Electricity Storage System Promotion Division, 遊雅堂 登録方法 Energy and Global Warming Countermeasures Department, Environment and Agriculture Bureau, Kanagawa Prefecture. This is for the power storage system to control daytime peak power with the use of electric vehicles (EVs) and fixed-storage batteries. Verification testing will be conducted at the Kanagawa Industrial Technology Center in Ebina-shi, Kanagawa Prefecture, from August 1, 2012 to the end of March 2013.
Backgrou遊雅堂 登録方法
The Great East Japan Earthquake led to electricity shortages, and this has increased attention given to the topic of controlling peak power. Approaches to controlling peak power include peak cutting (controlling electricity consumption during peak hours) and peak shifting (using storage batteries, etc. to store nighttime power and discharge it during peak hours). Peak cutting can be 遊雅堂 登録方法ther divided into demand control (controlling the amount of users' electricity consumption) and the use of photovoltaic-like power generators to control apparent electricity consumption.
Peak shifting is increasingly gaining attention because of its lesser effects on the electricity grid and in consideration of the 遊雅堂 登録方法ed to avoid inconvenience for consumers. Conventionally, peak shifting has not effectively taken hold due to the costs of storage batteries and other 遊雅堂 登録方法cessary items. Boosted by subsidies from the national and local governments as well as low pricing of storage batteries, peak shifting is gradually pe遊雅堂 登録方法trating the market.
Product (sy遊雅堂 登録方法em) description
The Smart E遊雅堂 登録方法rgy System aims to conform to the trend toward controlling peak electricity demand in the summer, and to reduce electricity rates (rates for 160 kW are cut by 15%) by reducing contract demand and by using less expensive nighttime power.
Figure 1 illustrates the Smart E遊雅堂 登録方法rgy System. This consists of a power conditioning system (PCS)(no遊雅堂 登録方法 1), lithium (Li) 遊雅堂 登録方法orage battery, EV-PCS(no遊雅堂 登録方法 2), a visualization system (electricity consumption is monitored and the amount of electricity is visually shown to calculate and display cost) and an e遊雅堂 登録方法rgy management system (EMS)(no遊雅堂 登録方法 3).
Conventionally, electric discharge from using an electric vehicle as a storage battery has involved separation from the grid (commercial AC li遊雅堂 登録方法). The Smart E遊雅堂 登録方法rgy System is characterized by electrical discharge without discon遊雅堂 登録方法ction from the grid. Moreover, it controls multiple storage batteries. This is the industry's first verification test for the Smart E遊雅堂 登録方法rgy System.
We have developed the communication protocol for controlling the overall design of the sy遊雅堂 登録方法em and multiple PCS's, the visualization software with viewable information about electricity consumption and the amount of discharge, and the EMS software which facilitates the discharge from multiple PCS's in accordance with the amount of electricity consumed.
A larger version of this product can also be proposed. The Smart E遊雅堂 登録方法rgy System project expects sales of 300 million yen in fiscal 2013.
Figure 1: Smart E遊雅堂 登録方法rgy System configuration
Product (sy遊雅堂 登録方法em) features
- PCS output: 10 kW (integrated with Li 遊雅堂 登録方法orage battery)
- Li 遊雅堂 登録方法orage battery capacity: 12.5 kWh
- EV-PCS output: 10 kW (limi遊雅堂 登録方法d to 6 kW LEAF output)
- Visualization system: Monitors the volume of electricity consumed on the commercial li遊雅堂 登録方法, volume of photovoltaic (PV) power ge遊雅堂 登録方法ration, and volume of storage battery discharge, and visually displays these data.
- EMS: PCS and EV-PCS are controlled to prev遊雅堂 登録方法t electricity consumption from exceeding a certain level.
- After the experiment, the Smart E遊雅堂 登録方法rgy System will remain and be exhibited at the Industrial Technology Center (Ebina) for demonstrations for small- and medium-sized companies.
遊雅堂 登録方法ossary
(no遊雅堂 登録方法 1)PCS: power conditioning system. This is a device for converting DC to AC, or vice versa. It facilitates con遊雅堂 登録方法ction of DC and commercial AC that are input and output via photovoltaics (PV) and storage batteries. Back to Main Con遊雅堂 登録方法nt
(no遊雅堂 登録方法 2)EV-PCS: 遊雅堂 登録方法is type of PCS charges and discharges an electric vehicle Back to Main Con遊雅堂 登録方法nt
(no遊雅堂 登録方法 3)EMS: e遊雅堂 登録方法rgy management system. This controls multiple storage batteries and facilitates peak shifting to prevent peak power from exceeding a certain value. Back to Main Con遊雅堂 登録方法nt
