introduction of melco`s mvdc distribution …ems plc dc24v load dc/dc dc48v load dc/ac ac100v/200v...

© 2016 Mitsubishi Electric Corporation

Introduction of MELCO`s MVDC Distribution Technology

1JNEP-CV-0028

Ryosuke OchiSmart Engineering Group, PDSC,

Mitsubishi Electric Corp.

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プレゼンター

プレゼンテーションのノート

Thank you for having time today. I am Ryosuke Ochi from MVDC Group. By the end of my presentation and seeing our demonstration facility, I hope you will understand its high potential and why we start MVDC business.


① Increasing awareness on environmental problems, resource & energy issues.・Reduction of green house gas emission, energy self-sustainment, optimum mix of power gen.

② Increasing awareness of BCP as counter-measure for disasters.・Disaster ready power substations, etc.

① Increasing DC converted appliances, LED lights through digitalization. ② Continuous development of DC distribution for residential and buildings.③ Increasing popularity of DC sources such as renewable energies

(solar, wind, fuel cell), batteries (include EV).④ Evolution of PV generation systems to higher voltage

（DC600V→1000V→1500V）

Social Trend

Market

Appliances Datacenter Electric Railway Transmission

MV/LV DC Distribution Background

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プレゼンター


社会動向近年，ますます地球温暖化に対する意識は高まっており，様々な分野でCO2排出量を抑える取り組みが国家レベルから個人レベルまで行われている。また，東日本大震災を発端に生じた電力不足は，社会・経済だけでなく日常生活を脅かす深刻な課題であり，これまで以上に省エネ・節電が必要となっている。市場環境スマートフォン、PCなど直流で動作するものが増えてきた。再エネ(太陽光、風力、燃料電池)や蓄電池(EVを含む)など、DC発電装置が広く普及メリット　①システム全体での効率が高い　②太陽光発電、風力発電、燃料電池や蓄電池との接続親和性が高い　③無効電力や同期を考慮する必要がない


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Main Benefits of DC Distribution・High overall efficiency (energy conservation).・Easy interconnection of different DC power sources such as

Solar, Wind, Fuel Cell, etc.・Simplicity in connection of Storage Batteries.・No reactive power to consider.・Fewer parts, smaller footprint, Simpler design and so cheaper

cost on the load side without the AC-DC adaptors.

Different Forms of DC LoadsAside from automobiles, airplanes, metro railways and mega DC transmission lines, Direct Current (DC) is also widely used incommunication and electronic devices as well as in household digital appliances.

航空機

100V

ICチップ

1000V

電子機器類

電気通信

データセンタ

自動車

電気鉄道･地下鉄

送電用途

500kV

宇宙応用

300V

MV/LV DC Distribution Background

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Data Centre

Railway, Metro

Substation

Airplane

Space

Vehicle

Phone

Laptop IC

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AC Distribution DC Distribution (48Vdc)

DC Distribution (380Vdc)

DC380V

No. of Conversion=４stages No. of Conversion=2 stages

Minimize Air-con by heat emission reduction.Improved System efficiency(Power conversion stages reduced)

Facility cost reduced(smaller size cable).Installation flexibility(Applicable to longer distance).

DC48V

Power Supply SystemFeatures & Advantages

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プレゼンター


停電が起き，電力の供給が突然ストップすると，たとえ瞬間であってもコンピュータなどの機器は機能が安全に停止することができず，ハードウェアの損傷やデータの消失などのトラブルが発生する。そこで，停電が起きても，コンピュータを安全に停止させる時間や自家発電装置が稼動するまでの時間，電力を供給するUPSが必要。これらは直流で動作しているため、接続する際に交流給電の場合、電力変換を4回行うため、変換損失が発生。交流と直流の間の変換効率は80%程度しかなく、1段階の変換の度に20%前後の電力エネルギーが熱となって排出される。変換時に排出される熱は、データセンターの空調機によって冷却されるため、この空調機の電力分も無駄となっている。直流給電の場合は、交流電力を直流へ変換し、直接蓄電池に接続することが可能。そのため内部のDCDC変換を含め、2回の変換ですむため、比較して電力変換が少ない分効率改善が得られる。直流給電は、データセンターで導入されており、シンプルな構成のため機器故障の確率が少なくなり、高い信頼性を維持している。 48V直流給電の場合デメリット2つある。一つは近年ICT装置(サーバ等)の電力消費の増加に伴い電流が増加するため、ケーブルが太くなり敷設の施工性が悪くなる。もう一つは、48Vで長距離で送電しようとした場合、電圧降下が起きて、長距離化できない。データセンターを構築する場合大きいものが作れない。 380V直流給電の場合、シンプルな構成のため信頼性が高く、変換段数も少ないことから電力ロスも低減でき、電圧を高くするため電流が減り、ケーブルの細経化が可能。


Demonstration facility of MVDC Distribution Constructed for the development of products and strengthening ofcompany’s engineering capabilities while leveraging on current MELCO’stechnologies, all for the purpose of promoting realization of a DC society.

MV/LV DC Distribution Introduction

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Building area Approx 191sq yd（Gross floor area : Approx 538sq yd)

Construction Steel construction / Three-storiesConstruction start September, 2015 Completion July 2016 Operation start August 2016

Devices

Communication devices,Solar power generation ,Wind power generation ,DC distribution board (DC380V),DC high speed CB (DC1500V)Batteries,DC load systems,Energy Management Systems (EMS)

System voltageDC 380V (First step : FY2016)DC1.500V (Second step : Underreview)

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Main Parts Explained

Grid

DC/DC

DC Load

SCADA EMS

PLC

DC24VLoad

DC/DC

DC48VLoad

DC/AC

AC100V/200VLoad

DC/DC

DC12VLoad

Migration Unit (DC/DC conv.)

AC/DC DC/DC DC/DC

LIBPV

Grid Conv.

① Grid Rectifier converts commercial power to DC and regulates DC bus voltage.② LiB Converter converts LiB DC voltage to bus voltage. Via EMS controls

charge/discharge.③ PV Converter connects power generated by PV to DC bus.④ SCADA & EMS for planning of charge/discharge LiBs base on generation & load

demand forecast.⑤ Migration Unit (DC/DC converter) converts voltage to each load requirement.

PV Conv. LiB Conv.

D-SMiree

AC

DC

DC Distribution Systems

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DC-EMS (Monitoring and Charge-Discharge System with PLC)

Function DescriptionSingle line diagram Monitor Displays measurement values, status and abnormalities in

each facility via the graphical simulation representations created in graphic maker application.

Status of Converters Displays status, measurement and modes of converters.Alarm and Measurement list Summary listing of previous alarms, start/stop operation

and status change event.Supply and demand management parameters Incorporation of battery charge/discharge control in

Energy Management System based on simple schedule.Set Operation Mode Switches operation mode

DC-EMS (PLC)

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プレゼンター


EMS can manage supply and demand for example,,


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2009

2010

2011

2012

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

・・

Research & DevelopmentDC380V Product DevelopmentDC1500V Product Development

Market Release

DC Loads Market Release

Upstream System Development

ConsumerBusiness Development

DC Distribution Initiatives Plan

R&D（Green IT PJ）

Domestic Demo

OverseasDemo

Large Cap. System

（～700kW)

Small-Mid Cap. Sys.（3.5kW～)

▲For Data Centers

▲3.3kV SiC appliedMMC Type HVDCConverter Cell Tech. Verif.

▲DC High-Speed CB Development for Railways

▲D-Smiree BrandEstablishment

Universal Design Line-up expansion

DC1500VConnected System

Air-conVentilator

DC Loads Product Line-up expansion

△MELCO HVDC Demo. Bldg.Operation (target 2nd Half 2018)

▲Shirasagi Elec. New Bldg.

Development of higher voltage in the future.

Target acc. sales of $500M by 2020HVDC-Diamond

▲Application

▲DC Demo Facility

LEDLight

D-SMireeＤiamond-Ｓmart ＭＶＤＣ（※） Distribution NetworkSystem for Innovative, Reliable, Economical, Ecology※ ＭＶＤＣ： medium voltage direct current

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MV/ LV DC Distribution System Target Fields

HVDC

MVDC

LVDC

HVDC:high-voltage, direct current (送電)

MVDC:medium-voltage, direct current(配電)

LVDC:low-voltage, direct current(給電)

Offshore wind power:洋上風力発電

LVDC-house:宅内給電LVDC-Datacenter:DC-UPS

high-voltage, direct current:直流送電

D-SMiree for Community:街・地域

D-SMiree for Building(ZEB):ビル

D-SMiree for Station:駅D-SMiree for Factory:工場

D-SMiree for Datacenter:データセンター

Promotional Activity

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プレゼンター


千葉の銚子沖にある、洋上風力北海道　青森間にある連携設備(直流送電)北海道と本州の電気を、直流の送電線で結ぶため、交流と直流を変換する設備今までの48V直流配電、宅内給電色々あるが、我々が想定市場としているのは、データセンター、ビル、工場、街である


Mitsubishi Electric as a ZEB Planner1 completed the Japan’s first 380V DC Distribution ZEB project.Project SummaryProject Type: ZEB Ready Building (50 stuffs, 3-storey, total floor area 2,197sq.m)Completion Date: January 31, 2018DC Loads: 380V LED Light, 5V USB socket (for IP phone chargers, etc.)Project Location: Kumamoto City JapanEnergy Saving (Estimate): 51% (from MELCO DC Rectifiers, DB, air-con, ventilators/fan, LED light, elevator and other brand’s battery, sun powered water heater and geothermal energy, etc.)

19% (from MELCO solar PV-Battery (LiB) system)75% Total energy to be saved (against standard same sized building)

Others: Building Energy Management System (BEMS)Electric Vehicle (EV) power conditioner (charger/discharger)

Shirasagi Denki Kogyo New Main Office Building

Shirasagi Denki Kogyo Main BuildingRough illustration of installed equipment/ systems

1: Registration system by Japan’s Ministry of Trade and Commerce for ZEB promotion. MELCO is registered as ZEB Planner since May 2017.

VentilatorHi-efficiency Air-conMain heat exchangerLightsDC LED LightsLight w/sensor

(motion, brightness)

PV-Batt connection

PV

LiB

MELCO

DC Distribution System BEMS

EV PCS

Elevator

Glass WallTemp. insulation Multi-layer

Solar Water Heater

GeothermalHeater

Others

Scope

Supply Reference

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プレゼンター


This the New Shirasagi Electric Main Building which is the first 380VDC ZEB facility in Japan. About the power conserved, during the engineering stage total conserved energy including other power saving measures such as sun powered heater, natural ventilation was 75%, but in actual base on latest data, total conserved energy of this facility is 75%, so it is the first DC powered Nearly ZEB project ever completed in Japan. This is the 3-storey building, total floor area 2 thousand sq.m, there are 50 stuffs.


MELCO completed the our first 「e-F@ctory2 」.

Project SummaryProject Type: e-factory conceptCompletion Date: January, 2018DC Loads: 380Vdc LED Light, 24Vdc Large DisplayProject Location: Marugame City JapanOthers: Building Energy Management System (BEMS)

ioT, Industrial Robots and PV

Our New VST-VCB1 Factory

Supply Reference

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1: VCB: Vacuum Circuit Breaker VST: Vacuum Switch Tube 2: e-F@ctory concept ： it is the concept creates “Smart Factories” through IoT-based big data utilization


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introduction of melco`s mvdc distribution …ems plc dc24v load dc/dc dc48v load dc/ac ac100v/200v...

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