Measurement Result Analysis at Chiller JW Marriott · PT. Mitra Kreasi Sejati A perfect solution...

PT. Mitra Kreasi SejatiA perfect solution for efficiency

www.mitra-energy.co.id

Measurement Result Analysisat Chiller JW Marriott

December 15, 2017 - December 19, 2017

1

ChillerVoltage Line - Line

Unbalanced

Voltage = 0,49%

PT. Mitra Kreasi Sejati A perfect solution for efficiency


2

ChillerCurrent

Unbalanced

Current = 3,7%



3

ChillerFrequency



4

ChillerCosphi

Cosphi is pretty good,

above 0.89 and

average about 0.92



5

ChillerTHD i (Harmonis Arus)

Harmonious

Reaches 48%



6

ChillerDetail Harmonis Arus -Orde

Harmonic Analysis

1. The 5th and 7th Harmonic domains, the

cause is Inverter

2. There is a Harmonic to 3.9, where the

harmonic in this order will flow into Neutral

resulting in a neutral and inefficient heat cable



7

ChillerCurrent Waveform



8

ChillerArus VS THD i

There is a 25% harmonic

current at 786 A, so it can

be seen real harmonic

current = 196 A



9

ChillerTHD V (Harmonis Tegangan)

Harmonic

Voltage

Exceeds 5%

10

ChillerVoltage Waveform



11

Result

1. There is Unbalanced Load (3.7%) and Unbalanced Voltage is still below the NEMA

level of 0.49 (NEMA Standard Unbalaced Voltage> 1%)

2. Cosphi Still pretty good that is above 0.89

3. Harmonic The current is quite high, which can reach 48%, and the real Harmonic

current reaches 190 Ampere (SPLN: Harmonic Flow <20%)

4. Harmonic voltage reaches 5.1% (SPLN Harmonic Voltage <5%)

5. Dominant Harmonic at the 5th and 7th Order, this is due to Inverter or Rectifier Usage

load, but in addition there is harmonic to 3 and 9, where the current in this order will

flow to neutral cable



12

ChillerAnalisa hasil Pengukuran

Problem Chiller

A high Harmonic of 48% will result in:

Harmoniously affects the capacitor, which

can cause the current in the capacitor to rise

high

Resulting In the heat on the cable, vibrating

in the transformer, and interfere with the

Transformer and the load around the

transformer in the chiller

Solution :

1. Adding Reactor to Capacitor

to protect capacitor from

harmonic current

2. Addition of Active Filter

harmonic (AFH) on Chiller

Charge side

The AFQ solution for this chiller capacity is =

Safety Factor x Real Harmonic Current

Safety factor adjusted to harmonic voltage,

where the harmonic voltage is 5%, so the

safety factor = 1.5

Solution :

1. AFQ = 1,5 x 192 = 288 A

2. The addition of this AFQ will

be guaranteed to reduce the

current harmonic at <5%

13

ChillerAddition of Harmonic Active Filter

Network Load

AFQ

Phase

R| INCOMING |

Powe

r

Load

| OUTGOING |

Power Meter

(kWH1)

Power Meter

(kWH2)

PLCPLA

PLOCPLGC

ST

Sensing Transforme

r

CTL has the following functions:

PLC : Programmed Logic ControlPLA : Programmed Logic AnalogPLOC : Programmed Logic Oscilloscope ControlPLGC : Programmed Logic Graphic Control

S

T

N

R

S

T

N

ST ST

Efficiency

10% - 25%

POT Proportional Respon

SP RW Volt HzTHD%

PLN

End-user

Installation scheme and how CTL Enery Saver + works

15



THANK YOU!UNTUK INFORMASI DAN KETERANGAN LEBIH LANJUT SILAHKAN MENGHUBUNGI KAMI

KEMBALI

Jalan Jalur Sutra 30D NO.10

Alam Sutra – Serpong Utara

Tangerang Selatan - 15324

021 – 22221561

0878-8883-8339 (24 Hours)

[email protected]

http://www.mitra-energy.co.id

Jalan Ki Hajar Dewantara

Golden 8 blok H/29 Gading Serpong

Tangerang selatan - 15810

021 – 22221561

0878-8883-8339 (24 Hours)

[email protected]

http://www.mitra-energy.co.id

Measurement Result Analysis at Chiller JW Marriott · PT. Mitra Kreasi Sejati A perfect solution...

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