Microgrids An Emerging Paradigm for Meeting Building Electricity - - PDF document

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Microgrids An Emerging Paradigm for Meeting Building Electricity - - PDF document

Dec 05, 2023 353 likes •497 views

Microgrids An Emerging Paradigm for Meeting Building Electricity and Heat Requirements Efficiently and with Appropriate Energy Quality with Appropriate Energy Quality by Chris Marnay & Ryan Firestone C_Marnay@lbl.gov - +1.510.486.7028 -

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Microgrids

An Emerging Paradigm for Meeting Building Electricity and Heat Requirements Efficiently and with Appropriate Energy Quality with Appropriate Energy Quality

by

Chris Marnay & Ryan Firestone

C_Marnay@lbl.gov - +1.510.486.7028 - http://der.lbl.gov

paper presented at the

European Council for an Energy Efficent Economy

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European Council for an Energy Efficent Economy 2007 Summer Study La Colle sur Loup, France -

6 June 2007

a microgrid definition competing power system visions

  • f

i id d t ti I J

Outline

summary of microgrid demonstrations In Japan Sendai Project

  • heterogeneous power quality

Hachinohe Project

  • central control, private feeder, 100 % renewable

Kyoto Project at Kyotango

  • virtual microgrid biogas

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  • virtual microgrid, biogas

Aichi Project at Nagoya Airport

  • multiple fuel cells, biogas, NAS battery
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What is a Microgrid?

A controlled grouping of energy (including electricity) sources and sinks that is connected to the macrogrid but can function to the macrogrid but can function independently of it.

main benefits to developers of microgrids:

  • pushing efficiency limits by heat recovery (CHP)
  • creating a more favorable environment for efficiency and

small-scale renewables

  • providing heterogeneous power quality and reliability (PQR)
  • ther societal benefits include:

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  • ther societal benefits include:
  • avoiding macrogrid investments
  • hardening of supply
  • curbing generator market power, etc.

competing power system visions

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Supergrid Vision

PQR = power quality, & reliability PQR power quality, & reliability

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Supergrid Vision Limits

centralised power system heat loss multiple infrastructure interdependencies f ti i ibl t l t i perfection impossible or at least very expensive restrictions on power system expansion (siting, environmental, rights-of-way, etc.) volatile bulk power markets economics drives operation closer to limits need to accommodate intermittent resources

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insecure system

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Dispersed Vision

(distributed control & heterogeneous service ) Environmental Energy Technologies Division

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summary of projects in Japan

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Microgrid Project Sites

NEDO Microgrids

Nagoya, Aichi Prefecture Hachinohe, Aomori Prefecture Kyotango, Kyoto Prefecture

Sendai Hachinohe

y g , y Sendai, Miyagi Prefecture

Private Sector Microgrids

Tokyo, Shimizu Corporation Yokohama, Tokyo Gas

Other Related Projects

The University of Kitakyushu, Fukuoka Pref. DoCoMo Building, Sendai

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Kyotango Nagoya Tokyo Yokohama Kitakyushu

Sendai Project

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Sakura at Sendai Microgrid

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Sendai Project Power Plant

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Sendai Project Pictures

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Sendai Project Schematic

430 VDC bus

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Sendai Project Pictures

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Hachinohe Project

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boiler wood waste 3x170 kW recip. gensets 50kW PV

Hachinohe Project Schematic

lead acid battery bank (100kW)

Sewage Plant

digestor storage tank PV 10kW wind turbine 8kW 8kW wind turbine junior high school (60kW) junior high school (53kW) elementary school (46kW) elementary school (46kW) private feeder (5.4km) bank (100kW) PV 10kW

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Hachinohe City Hall (360kW) PV 10kW 2x2kW wind turbines New City building PCC Hachinohe water utility (50kw)

Hachinohe Project Pictures

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Kyoto Project at Kyotango

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substation utility network

50kW wind turbine

substation

Kyoto Project Schematic

Internet based demand 7.5kW demand 9.4kW demand 55kW 30kW PV demand 100kW

biogas plant

5x80 kW biogas gens. 250 kW MCFC 100 kW battery 450 kW demand

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Internet based control system demand 592kW demand 178kW 20kW PV demand 100kw

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Kyotango Project Pictures

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Aichi Project at Nagoya Airport

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city offices electricity utility electricity

Aichi Project Schematic

methane fermentation transformer SOFC (40 kW) NAS battery electricity PV water treatment Environmental Energy Technologies Division

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HT gasification MCFC (270kW & 300kW) 4x200kW PAFC NG

Aichi Project Pictures

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The End

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Power Quality Services

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