Handbook of Energy Storage for Transmission or ... - W2agz.com

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2
THE STATUS OF SODIUM SULFUR BATTERIES
2.1 Development & Demonstrations
Table 2-1 lists 19 NAS battery demonstration and early commercial projects through August
2002 rated at 500kW or more for cumulative capacity in excess of 28MW and 197MWh,
including two, 6MW, 48MWH installations at TEPCO substations. Thirty projects smaller than
500kW are also in progress and add another 3.5MW and 25MWh of NAS-based capacity.
Table 2-1. In-Progress NAS Battery Systems Rated at 500kW or More
No. Customer Site kW/kWh Purpose
Start of
Operation
1 TEPCO Kawasaki Test Site 500/4000 Load Level Jun-95
2 TEPCO Unit 1 Tsunashima Substation 6000/48000 Load Level Mar-97
TEPCO Unit 2 (Unit 2 relocated, see "5") Jul-97
TEPCO Unit 3 Jan-98
3 NGK Head Office 500/4000 Load Level Jun-98
4 TEPCO Unit 1 Ohito Substation 6000/48000 Load Level Mar-99
TEPCO Unit 2 (Unit 2 relocated, see "18") Jun-99
TEPCO Unit 3 Oct-99
5 TEPCO/TOKO Saitama 2000/16000 Reloc "2", LL Jun-99
6 Chubu EPCO Odaka Substation 1000/8000 Load Level Mar-00
7 TEPCO
Tsunashima Substation
(New Unit 2)
2000/14400 Load Level Nov-00
8 TEPCO Shinagawa Substation 2000/14400 Load Level Mar-01
9 TEPCO/Asahi Brewery Kanagawa Plant 1000/7200 LL+UPS Oct-01
10* Metro City of Tokyo Kasai Sewerage 1200/7200 LL+UPS Oct-01
11 TEPCO/Takaoka Oyama Plant 600/1440 LL+UPS Oct-01
12 TEPCO/Takaoka Oyama Plant 800/5760 Load Level Feb-02
13 TEPCO/Fuji Xerox Ebina Plant 1000/7200 Load Level Feb-02
14 TEPCO/Pacifico Media Center 2000/14400 LL+UPS Apr-02
15 TEPCO Chichibu Substation 1000/7200 Load Level Jun-02
16* TEPCO/Fujitsu Akiruno Technology Ctr 3000/7200 LL+UPS (PQ=3) Jun-02
17* TEPCO/Tokyo Dome Tokyo Dome Renovation 1000/7200 LL+EPS Jul-02
18* TEPCO/Ito Yokado Maebashi Shopping Ctr 1000/7200 Reloc "4", LL Jul-02
19 AEP Gahanna, OH, USA 500/720 LL+UPS (PQ=5) Aug-02
* Early commercial projects
The pre-commercial development and demonstration program sponsored by TEPCO was
conducted in recognition of the empirical nature of ceramics technology. The cost, performance
and reliability of NAS cells require that beta alumina solid electrolyte with high strength, low
ionic resistivity and excellent stability is economically mass-produced. Proof that these
requirements had been met required prototypic manufacturing facilities, full-scale
demonstrations and the accumulation of sufficient data to justify launching commercialization.
The first demonstration of NAS technology in the US is a multi-functional unit using two NAS
PQ Modules for combined power quality and peak shaving. The demonstration is an EPRI
2-1