Reducing Carbon Footprint and Energy Bill in a DistrictCherif Assaf – Program Director-Energy Research Institute @ NTU

A New Reality in the use of Energy

Conventional gas and electricity systems are decoupled resultinglow optimization of energy , under utilization of assets , energylosses and over design .

Increased Distributed Energy Resources coupled with energystorage whilst addressing intermittency challenges have limited

controllability and can result in network instability

District cooling systems can provide greater efficiency, but theyare decoupled from other energy systems

New market mechanisms at the distribution level

Digitalization will be the common thread that spurs thesetechnological advances

Source of electricity: grid, local-generation

Losses: Process Energy Loss: ~45%, Electricity Generation

Opportunity: Energy recovery processes

64%

64% energy loss typically seen in manufacturing sector

Testbed

Site

NTU JTC

Development and demonstration of anintegrated Multi Energy Management &Information System at a commercialindustrial site with:• Seamless integration of Energy Generation,

Storage, & Rational End-use

• Integration of Electric, Thermal, and Gas

networks

• Real-time interaction with Energy Market

DELAYED

Jurong Port

NTU JP

To achieve substantial energy (at least 20%)and cost savings (at least 30%) resulting in atleast 20% CO2 emission reduction.

Our Challenges: Introducing SMES

(Smart Multi Energy System)

Multi purpose port : 155 Ha 40,000 Vessels x yr.

Electricity requirements : 10MW at peak through PV which represents 60% of the Harbour power requirements

L 5

SMES

Maintain savings

Optimum energy

dispatch

Better equipment

sizing

Better design

long term

Optimum

energy mix

Energy & Cost

Savings

Improve maintenance

Data analytics

AI & Models

SMES

OptimumPlanningTool (OPT)

Optimize CAPEX

SMES

CloudPlatform

Optimize OPEX

Planning Operation

Maintenance

SMES is NOT just a software,

it’s a solution

L 5

Gas Engine

PVRoof

Electrical Loads

Energy Storage

ThermalStorage

Chiller Plant

ThermalLoads

Electric Flow Thermal Flow

SMES Controls

SMES

SMES Controls Prices

Energy Retail PricesRegulated, Real-Time

Energy exchanged at the point of delivery

AVAILABLE CAPACITY

Absorption Chiller

District Cooling

9.6MW (existing)200kW (new@W16)

700kW Gas Engine

@Warehouse 16A

220 RT Capacity

300kWh Battery ESS

300RTh

Jurong Port deployment

Procurement- Co-generation unit- District cooling and

thermal storage- Gas pipe

- Communication protocols tools

- Visualization and Historian Tools

- CIM implementation

Chiller Plant

Chiller Plant

BMS

Warehouse / Tenants

Grid

HCC Building

JP Building

CHP Plant (< 1MW)

Thermal Storage

District Cooling Infrastructure

…

Pipe Natural Gas Supply

Crane

Lighting

PV Roof(Sunseap)

Point of Common Coupling

SMES Control Centre

Forecast and Optimization algorithmsFault Detection and Diagnosis

Universal getaway for monitoring/control

Smart metering infrastructure

MG-OS

AC DC

Cust. Economic Dispatch

8

Metering Dashboard pending link to metering data

Jurong Port deployment

Features :

Economic dispatch

Electric/thermal management

Metering

Tariff management

Fault detection and diagnostic

Strategy :

Forecasts for generation, consumption and prices.

Economic energy dispatch (30min) Energy arbitrage, peak shaving.

Model Predictive Control, Rolling Time Horizon.

Rule based engine for FDD

Gas Turbine

PVRoof

Electrical Loads

Energy Storage

ThermalStorage

Chiller Plant

ThermalLoads

Electrical Loads

Chiller Plant

ThermalLoads

Electric Flow Thermal Flow

SMES Controls

SMES

SMES Controls Prices

Energy Retail PricesRegulated, Real-Time

Energy exchanged at the point of delivery

Building 1

Building 2

Main Block Functions ▪ Data acquisition : field gateway▪ Data Storage : SQL Server▪ Data Analysis : Artificial Intelligence▪ Optimization : Mathematical Prog.▪ User Interface : Web Based

SMES Operation Platform:

The heart of the system

◼ SMES Platform

Weather, Solar, Electricity Price, etc.)

Data Integration&Data Transformation

Data Storage, Processing & Analytics

BuildingNet load

Application

User InterfaceEnergy Manager, Operator

UI / Presentation& Roles

SQL Server / Machine learning tools

Economic Dispatch

Sub System Controller

Portfolio Management

User Management

Gateway Management

Sub SystemsControllers&Assets

Chiller plant

Poly Gen.

SMES

Clo

ud

Pla

tfo

rmO

nsi

te

Singapore Power Universal Gateway (SPUG)

Historical Core Data Warehouse

3rd-party systems

ETL : Extraction, Transformation & Loading

Report depository

Global Energy Dashboard

Application Event & Log

FDDRule based Engine

Web API

Commissioning toolsPortfolio Perf.

Overview

FTP

Third Party Interfaces

RSync

Energy storage

Mass Data Integration tools

Soft. Exception Management

Energy Monitoring

Admin Tools

Reporting tools

AC/DCmicrogrid

ModelManagement

Dynamic data flow

Sub meteringEnergy

Dashboards

Energy Optimizationand control

Condition Monitoring

Reporting tools

Chiller plant efficiency

monitoring

…

User InterfaceEnergy Manager

User InterfaceSystem, Engineering

User InterfaceEnergy Manager

Job Scheduler

ServiceBus

API

…

FDD Rule Library(ACMV, Elec)

Data Transfer& Data collection

FDD dashboard

BMS SCADA MG-OS …

BacNetmass data collection

Spug App(SMES)

OPC-UA & DAmass data collection

Control APPSpecific to each asset

Cloud

Edge Gateway

Design/dev/lab tested

Ongoing dev

On roadmap

PVOutput

User InterfaceEnergy Manager

Forecast

Coolingload

Tariff Management

Version 0.4

Functional Architecture

We monitor energy consumption from 13 buildings on NTU

campus in real time

Solar production

Grid consumption

Kwh/m2

We can compare a portfolio of buildings with mixed energy

contributions for benchmarking their energy performance

Chiller efficiency

12 month savings• Energy• CO2

• Cost

Building information

KPI Indicators for electrical and thermal

Target setting

features

For each building we have a specific dashboard e.g., RTP

Thermal economic dispatchElectrical economic dispatch

Economic dispatch for multi energy systems has been created

corresponding electricity pricing contracts

Forecast accuracy constantly being monitored, evaluated and

improved e.g., CleanTech One

Connection Energy Market

DC Grid

Main Grid

A Software Suite▪ Planning of Multi Energy Estate - Design of energy assets (solar, genset, batteries, thermal storage,..)▪ Operation - Prediction-based decision tool for energy dispatch in multi-energy estate▪ Maintenance - Rule-based engine for Fault Detection & Diagnosis (FDD) of sensors and chiller plants equipment

Hardware systems▪ Integration of metering infrastructure (> 200 meters)▪ Smart multi modal sensors for comfort improvement and cost savings (temp., occupancy, humidity)▪ PV Optimizer 380V DC – certification by TUV by October 2019▪ 380V/15A Solid State DC breakers – prototype tested

District Cooling Infrastructure ▪ Cogeneration plant , Thermal storage

Research▪ Phase change material storage & CryoLab▪ Liquid air storage

Deployment ▪ NTU Campus and Clean Tech Park▪ Jurong Port and EPGC (testing)

▪ S$18M project supported by the NRF▪ 5 Years Project started in 2015 involving 40 people.▪ 20 % Energy and CO2 Savings

SMES deliverables

THANK YOU

Ab

sorp

tio

n

Ch

iller

Cooling Tower

22kV Transformer

Make Up Water Tank

Tower

Electrical & InstCabling

Gas & Chill Water Pipes

Electrical & Control Panel

Water Pumps

Thermal Storage

Tank

Cogeneration Power Plant