Introduction of Battery Energy Storage System (BESS)

Battery Energy Storage System (BESS)

Allen Xiang+86 15088766527

15th Feb 2017

Stored Energy Solutions for a Demanding World!

Topics

What is BESS

Other ESS technologies

How to do BESS

Application of BESS

Concept of applications

Knowhow of BESS

Typical case show


What is BESS

Narda ESS is a smart management system of energy, ideally for micro-grid solutions, in order to smooth power, track grid load and shave peak


What is BESS


Real-time monitoring and remote control on the energy storage system

Friendly interface

Distributed datalog

Multiple protocolFlexible setup

What is BESS


Topics

What is BESS


How to do BESS

Application of BESS


Knowhow of BESS

Typical case show







Hydro Flywheel Compressed air Electrochemical

• Super capacitor• Lithium Iron• Flow battery• Na-S• Advance VRLA

• Electrochemical energy storage is keen solution;

• So far no any technology can complete comply the requirement of energy storage;

• Economic feasibility is the key aspect that restrict developing of energy storage.

Specific energy

Power density

Response time

Storage efficiency

Lifetime

OpEx

Environment & Safety

KP

I



Advanced lead acid, Lithium, Na-S battery has similar energy & power scale.

Energy & Power scale



Nowadays, no technology can completely comply the requirement of energy storage; Lead carbon has advantages, such as safer, larger scale, better economic, etc.

KPI

Life Safety Scale Cost Efficiency

Lead-carbon ★★★ ★★★★ ★★★★ ★★★ ★★★

Lead-acid ★★ ★★★★ ★★★★ ★★★ ★★

Li-ion ★★★ ★★ ★★ ★★ ★★★★

VRB ★★★★ ★★★ ★★★★ ★★ ★★★

NAS ★★★ ★ ★★★ ★★★ ★★


Topics

What is BESS


Application of BESS

How to do BESS


Knowhow of BESS

Typical case show


Applications of BESS


Applications of BESS


Topics

What is BESS


Application of BESS


How to do BESS

Knowhow of BESS

Typical case show





Original ramp-rate of solar farmRamp-rate control by BESS

Action of BESS

Final smooth output

Original solar generation





用电需求时段转移（时移 /套利）

削峰填谷

峰谷电价差

太阳能储能

能量时移包括：1，低电价时充，高电价时放；2，储存多余电能，在需要时或者价格高时输出；3，负载高峰时放电，低谷时充电；

应用场景：1，削峰填谷，赚差价；2，太阳能 /风能电站；户用储能系统；3，削减峰值负载；

成本精算250次 -365次循环 /年



功率平滑

上图表示：发电量和负载需求之间存在不平衡，在没有进行功率平滑的情况下，会出现大量波动，而进行功率平滑之后，这些波动得以抑制，系统响应则相对平顺。

通过并网的、随时可以按需提高或调低功率的发电机组进行功率平滑：当发电量出现瞬时不足时，提高发电机组的功率输出；反之，在发电量瞬时过量时，调低发电机组的功率输出。

这样的调节，对发电机组有损耗，这即是储能商业模式的基础；

North American Electric Reliability Council’s (NERC’s) Real Power Balancing Control Performance (BAL001) and Disturbance Control Performance (BAL002) Standards



调频

当负载和发电机组之间出现不平衡时，为保证系统频率和稳定性，需要作出多种响应：首先，在最初的几秒内进行一次频率调整，发电机组调速增加发电出力；接下来，在半分钟至几分钟的时间里进行二次频率调整，如图中虚线所示。值得注意的是，发电机组或传输线路突然发生故障后，频率衰减的速率与电网在那一瞬间的总惯性成正比，大型发电机组的旋转质量和 /或很多小型发电机组的总质量共同决定了这一惯性。惯性和调速动作共同决定了频率衰减及复原的速率。

在 Arresting和 Rebound这两个阶段，就是飞轮或电池储能系统进行快速响应，调频频率的阶段；这与功率平滑类似，但响应时间更短， 1分钟之内，秒级。

Frequency response is very similar to regulation, except it reacts to system needs in even shorter time periods of less than a minute to seconds when there is a sudden loss of a generation unit or a transmission line.Arresting & Rebound period is the window of time in which the fast-acting response of flywheel and battery storage systems excels in stabilizing the frequency



电网的运行需要备用容量，以便在部分正常供电设施突然不可用时进行供电。一般情况下，备电容量至少与供电系统中的最大单体电源（最大单体发电机组）容量相当，要达到正常供电容量的15%-20%。

备电类型响应 /时长电池储能

同步备电 10s – 10min Yes

异步备电 10min – 30min Yes

补充备电 1h – 其他机组

注：大型电力 UPS系统，一套电池储能功率相当于一个发电机组

寿命、性能、总价



负载跟踪 /谐波支撑

储能系统非常适合抑制风能、光伏等可再生能源系统产生的波动，这与储能系统对快速或随机波动的负载作出响应的情况相同。绝大多数情况下可再生能源储能系统会给出谐波上升和下降的预期最大速率（单位是MW/min）和谐波的持续时间，这对负载跟踪和谐波支撑都适用，因此二者可以等同视之。负载跟踪的特点是功率输出每几分钟就变化一次，不断在供电和负载之间作出平衡。

储能系统适用于负载跟踪的原因：1. 瞬时响应2. PSCO时保持 95%效率

备电类型时长特点功率平滑 15min – 60min 混动负载跟踪 15min – 60min 起停调频（ 50-60Hz）

1s-1min 制动 /助推



电压支撑

1. 储能系统在放电、充电、不放电也不充电三种情况下提供电压支撑服务；2. 电压支撑需要的额定时间约为 30min，在这段时间内，电网系统得以稳定，必要时开始有序分级卸载，以匹配发电量相。偶发性，稳压

黑启动

储能系统在电网内提供主动的功率和能量储备 , 以便在电网发生灾难性故障之后 ,为输配电线路供电 , 并为电站供电启动发电设备。要求低于 UPS的充电宝



延迟输电设施升级峰值负荷偶然 >输电系统承载能力（譬如变压器）：1. 如果换用新变压器，就会根据评估考虑 15-20年后的规格，就会超配，变压器服务寿命内大部分功率未用到，是投资浪费；2. 若此时不换新，假装储能系统，则可以解决峰值问题，同时延长现有变压器寿命；延迟升级、减少投资、提高资产利用率；

缓解输电线路拥堵上述场景的升级版进一步缓解线路压力；



需求侧响应

需求侧响应内容方案电能质量稳压 UPS

用电可靠性 UPS

零售电能时移 ESS

高峰用电费管理 EV， PV+ ESS，热泵，储冷


Topics

What is BESS


Application of BESS


How to do BESS

Knowhow of BESS

Typical case show


How to do BESS


How to do BESS

ES BOX STBESS


How to do BESS

EPC

Document verification (Govt)

SCADA

PCS

Battery

Solar

Construction

Approval

Canadian Solar

IESOUtility


How to do BESS

Find out pain point or true requirement

Learn how to operation BESS

Offer best battery configuration

Give clear control logic to EMS

Setup whole BESS system

Engineering work


How to do BESS


Topics

What is BESS


Application of BESS

How to do BESS


Knowhow of BESS

Typical case show


Knowhow of BESS

Knowhow of Hardware & Engineering

Knowhow of technical proposal


Island Original request Narada proposal

System configuration Function New proposal Battery technology

Upolu 4MW/2MWh Frequency protection 6MW/7MWh Lead carbon

2MW/5MWh Energy shifting

Savaii 2MW/0.75MWh Frequency protection 2MW/0.75MWh Lithium Iron Phosphate

Physically, both “Frequency Protection” and “Energy shifting” have same physically same hardware and software, the only difference is the monitored information & action trigger condition.

For battery, all the functions mentioned in above diagram, the action is same, charge & discharge; However, service life does very depend on Battery technology, Battery sizing & operation scenario; Same to PCS.

Knowhow of BESS


Power output Trigger condition Condition description Note

6MW Frequency Protection & Energy shifting is at same direction

When need 2MW energy absorb and need 4MW battery charge since frequency is higher

Extreme condition

4MW Frequency Protection & Energy shifting is at same direction But no need full power operation

Advantage of combination solution:1, Simply the solution2, Save cost of total solution3, Save & protect system by counteract reversed actions;4, Increase the maximum capability for each single function

2MWAt different demand direction; Or partial power needed

Saving & protect system by counteract two actions0MW

-2MW

-4MW Frequency Protection & Energy shifting is at same direction But no need full power operation

-6MW Frequency Protection & Energy shifting is at same direction

When need 2MW energy output and need 4MW battery discharge since frequency is lower

Extreme condition

Knowhow of BESS


Topics

What is BESS


Application of BESS

How to do BESS


Knowhow of BESS

Typical case show


Gonghe county, Qinghai province, China

CGN off-grid storage project

Project highlightsThe largest project of off-grid storage in China, with three

stages in construction, to provide electricity in no-grid area

• PV generation: 2.058MWp

• Storage capacity: 6MWh• Battery type: GFMJ-1500• Battery quantity:

2004pcs• Project date: 2014.05


Gonghe county, Qinghai province, China

CGN off-grid storage project

More references


Olympic park, Beijing, ChinaHanergy FE power station

Project highlightsIt generates 70KWh power per day to satisfy electricity

demand for 400 people, that can be installed in half hour by 4 persons

• PV generation: 19.2KWp

• Storage capacity: 144KWh

• Battery type: GFM-1000RC

• Battery quantity: 72pcs• Project date: 2014.09

Stored Energy Solutions for a Demanding World!More references

Olympic park, Beijing, ChinaHanergy FE power station


Changping district, Beijing, ChinaCNR micro-grid demonstration

Project highlightsTwo operational modes: On-grid and islanding power to

shift peak load and realize the central energy management

• PV generation: 275KWp

• Storage capacity: 1MWh• Battery type: REX-400• Battery quantity: 350pcs• Project date: 2013.10


Changping district, Beijing, ChinaCNR micro-grid demonstration


Lin'an city, Zhejiang province, ChinaNarada hybrid storage

Project highlightsThe original hybrid storage system with both VRLA and

LFP batteries, controlled by integrated heat management


• Storage capacity: 2MWh• VRLA capacity: 1.5MWh• LFP capacity: 400KWh• Project date: 2011.07


Lin'an city, Zhejiang province, ChinaNarada hybride storage


Dong Fushan island, Zhejiang province, China

Guodian PV-wind-diesel & storage

Project highlightsThe second largest micro-grid system by 2011, also

equipped with desalinization plants of sea water


• Wind generation: 210KWp

• Diesel generation: 200KWp


• Project date: 2010.11


Dong Fushan island, Zhejiang province, China

Guodian PV-wind-diesel & storage


Project highlights

• Wind generation: 2.5MWp

• Storage capacity: 1.87MWh



Yancheng city, Jiangsu province, ChinaDafeng off-grid wind storage

The biggest off-grid wind power station in China, also equipped with three desalinization units of sea water


Yancheng city, Jiangsu province, ChinaDafeng off-grid wind storage


Turpan city, Xinjiang region, ChinaNational model city of new energy

Project highlightsThe first demonstrative city of micro grid, with PV

installation of 8.7MWp at first period, total 13.4MWp

• PV generation: 8.71MWp

• Storage capacity: 1.2MWh• Battery type: GFM-

1000/500RC• Battery quantity:

300+600pcs• Project date: 2012.11


Turpan city, Xinjiang region, ChinaNational model city of new energy


Dongtou county, Zhejiang province, ChinaOn-grid project in Luxi island

Project highlightsThis project is a part of the National High-tech R&D Program, typical demonstrative case of micro-grid



• Ultra capacitor: 500KW*15s

• Storage capacity: 4MWh• Project date: 2013.03


Dongtou county, Zhejiang province, ChinaOn-grid project in Luxi island


Zhuhai city, Guangdong province, ChinaMicro-grid in Wanshan islands

Project highlightsThe largest project of micro grid in China, distributing in three islands, to provide electricity for daily lives

there

• PV generation: 1MWp

• Wind generation: 750KW*5





Zhuhai city, Guangdong province, ChinaMicro-grid in Wanshan islands


Shenzhen city, Guangdong province, China

Wind-PV and storage integration

Project highlightsThe integration of 50KW wind and 100KW PV system,

and the total storage is 2.9MWh from 3 sorts of batteries


• PbC batteries: 900KWh• Gel batteries: 900KWh• LFP batteries: 1100KWh• Project date: 2015.11


Shenzhen city, Guangdong province, China

Wind-PV and storage integration


Foshan city, Guangdong province, China863 project of energy storage

Project highlights

• PV generation: 5.5MWp • Storage capacity: 1.5MWh• Battery type: GFM-1000RC• Battery quantity: 312pcs• Project date: 2013.12

The first research program on the intermittent energy consumption for active distribution network in China


Foshan city, Guangdong province, China863 project of energy storage


Zhang Jiakou city, Hebei province, ChinaZhangbei new energy base (1st period)

Project highlightsThe world class demonstrative project, integrated with

total 500MW wind, 100MW PV and 110MWh storage

• PV generation: 40MWp

• Wind generation: 100MWp





Zhang Jiakou city, Hebei province, ChinaZhangbei new energy base (1st period)


Project highlights





Ulanqab city, Inner Mongolia, ChinaWind power station in prairie

The biggest wind power station in Asia, partially equipped with storage system to smooth the power


Ulanqab city, Inner Mongolia, ChinaWind power station in prairie

Thanks!

Technology

Introduction of Battery Energy Storage System (BESS)