PDF Publication Title:
Text from PDF Page: 006
Pump Photo 2. 500 kW System for Load Leveling (Electrolyte Tank) sidering the loss of business opportunities resulting from a facility reset, the loss might be huge. When used in such an application, an RF battery system is required to quickly respond to instantaneous voltage sags and supply electric power to important loads during the moments of such sags. Because an RF battery system has an immediate high out- put characteristic and its tank capacity can be designed flexibly according to the required capacity, economical design is possible according to the requirements. The load leveling function and the peak-cut function can also be provided where necessary. Photo 3 and 4 show an application at a liquid crystal factory(31). The major specifications of the RF battery system are shown in Table 4. The cell stacks are installed in the battery cubicle on the second floor of the building, and the electrolyte tanks, which are made of polyethylene (30 m3 × 8 units), are installed on the first floor. Normally they per- form peak-cut operation at 1,500 kW, and when a voltage Table 4. Specifications of Instantaneous Voltage Sag Compensation System Photo 4. Instantaneous Voltage Sag Compensation 3 MW System (Electrolyte Tanks) sag occurs, they discharge 3,000 kW for 1.5 seconds. (3) Application of RF batteries in combination with wind power generation Energy storage batteries are expected to be a good solution when renewable energy, such as solar and wind power generation, is introduced in large amounts to the power system, and various verification projects are cur- rently underway. Expectations are becoming higher for the introduction of energy storage batteries in near future. Regarding RF batteries, NEDO performed verification tests by installing energy storage batteries to wind power generator facilities to see if their output fluctuations could be smoothed as expected. Generally speaking, wind power output fluctuations vary periodically, ranging from millisec- onds to hours. RF batteries can be designed to either re- duce or increase the battery capacity by adjusting the amount of electrolyte, thus satisfying the needs for large or small capacity. In particular for short-frequency fluctua- tion, RF batteries are expected to improve economic effi- ciency through design, taking advantage of their high-rate output characteristics. In the following, the summary of verification tests is explained. (a) Application to single unit of wind power generation In the fiscal 2000 NEDO project entitled “Investigation for Introducing Battery Energy Storage System to a Wind Power Generation(32),” three types of energy storage batter- ies (RF batteries, NaS batteries, and lead acid batteries) were installed along with wind generators for testing. Among the batteries, the RF batteries were tested by the Institute of Applied Energy (IAE), which was entrusted by NEDO. A system of 170 kW (maximum 275 kW) in output ratings and 1,020 kWh in capacity was installed in the Horikappu Power Station of the Hokkaido Electric Power Co., Inc.. This system enabled a test that used the immediate high-rate output characteristics of RF batteries by adjusting the AC/DC converter output to the rating of the wind power generator of 275 kW. Figure 4 shows a conceptual configuration diagram of the system. The battery was installed at the wind power gen- eration interconnection point, and smoothed the wind Electrolyte tank Output capacity During peak shift operation 1,500 kW × 1 h During instantaneous voltage 3,000 kW × 1.5 s sag compensation operation Cell configuration (100 cells × 4 stacks in series × 3 banks in parallel) × 3 systems Electrolyte Sulfuric acid aqueous solution including vanadium at 1.7 mol/L Electrolyte tanks Polyethylene tank 30 m3 × 8 units Photo 3. Instantaneous Voltage Sag Compensation 3 MW System (Battery Cubicles) SEI TECHNICAL REVIEW · NUMBER 73 · OCTOBER 2011 · 9PDF Image | Redox Flow Battery for Energy Storage
PDF Search Title:
Redox Flow Battery for Energy StorageOriginal File Name Searched:
73-01.pdfDIY PDF Search: Google It | Yahoo | Bing
Salgenx Redox Flow Battery Technology: Power up your energy storage game with Salgenx Salt Water Battery. With its advanced technology, the flow battery provides reliable, scalable, and sustainable energy storage for utility-scale projects. Upgrade to a Salgenx flow battery today and take control of your energy future.
| CONTACT TEL: 608-238-6001 Email: greg@salgenx.com | RSS | AMP |