JCM_MN_AM001_ver01.0
Sectoral scope: 02
Joint Crediting Mechanism Approved Methodology MN_AM001“Installation of energy-saving transmission lines in the Mongolian Grid”
A. Title of the methodology
Installation of energy-saving transmission lines in the Mongolian Grid

B. Terms and definitions
Terms

Definitions

ACSR (existing conductors)

Aluminum Conductors, Coated-Steel Reinforced, whose
structure consists of the steel center strand(s), covered by theouter strands of aluminum.

LL-ACSR/SALow

ElectricalPowerLoss

AluminumConductors,

Aluminum-Clad Steel Reinforced, which have lower
transmission loss compared to ACSR by increasing the areaof conductive component.

C. Summary of the methodology
Items
GHGemission

Summaryreduction Reduction of transmission loss by introduction ofmeasures
Calculation

LL-ACSR/SA.
ofreference Calculation of GHG emission due to transmission loss in ACSR,

emissionsbased on the parameters derived from Mongolian Standard
MNS5870: 2008.

Calculationof

project GHG emission due to transmission loss in LL-ACSR/SA, based

emissionson monitored transmission loss.

Monitoring parameters

Power sent from the point of origin/supply to the transmissionline, power received at the point of receipt of the transmissionline, emission factor of the grid, direct current resistance of thetransmission line1

JCM_MN_AM001_ver01.0
Sectoral scope: 02D. Eligibility criteria

This methodology is applicable to projects that satisfy all of the following criteria.
Criterion 1

The transmission line constitutes of a single or double circuit(s) directly
connecting a substation and another substation within the country with nobranching in between, and does not constitute a part of a loop.

Criterion 2

The type of conductor is LL-ACSR/SA, which meets the following technicalcriteria1.
Equivalent to Equivalent to Equivalent toLL-ACSR/SA LL-ACSR/SA LL-ACSR/SA
279/20mm2
337/27mm2
445/36mm2

Type of energy-saving
unit
conductors
Outer
diameterofmmconductor
Direct current resistance
Ω/km(@20degC)
Tensile strength
N
Weightkg/km
Corresponding
conductors currently in
use that forms the basis
ofcalculating
thereference emissions.

≦ 21.6≦ 24.0≦ 27.5≦ 0.1063≦ 0.0862≦ 0.0659≧ 75,050≦ 921≧ 90,574≦ 1,132≧ 120,481≦ 1,490ACSR
240/32mm2

ACSR
300/39mm2ACSR
400/51mm2

E. Emission Sources and GHG types
Reference emissions
Emission sources

GHG types

Transmission loss in reference scenario

CO2

1

Outer diameter and weight are equal or less, tensile strength is equal or more, and direct
current resistance is 10% lower than that of existing conductors according to MNS5870: 2008.
Direct current resistance is measured according to IEC 60468 (Method of measurement ofresistivity of metallic materials) or other relevant national or international standards, and outer
diameter, tensile strength and weight are measured according to IEC 62219 (Overhead electricalconductors -Formed wire, concentric lay. stranded conductors) or other relevant national orinternational standards.

2

JCM_MN_AM001_ver01.0
Sectoral scope: 02
Project emissions
Emission sources

GHG types

Transmission loss in project

CO2

F. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
Reference emissions are calculated by multiplying transmission loss in ACSR (LOSSRF,L) by theemission factor of the grid (EFGrid,y).
The methodology assures net reductions by introducing a multiple conservativenessassumptions as follows.
The ratio of direct current resistance between ACSR and LL-ACSR/SA, which is in many cases
smaller than the ratio of alternative current resistance between ACSR and LL-ACSR/SA, isapplied in this methodology.
Furthermore, the ratio of direct current resistance between ACSR and LL-ACSR/SA at the same
conductor temperature (20 deg. C.) is applied in this methodology. This ratio is smaller than theratio of direct current resistance at the same ambient temperature, since the conductor
temperature of ACSR would be higher than that of LL-ACSR/SA at the same ambient
temperature due to higher resistance of ACSR. Therefore, there is a further element ofconservativeness by assuming that conductor temperature is the same between ACSR andLL-ACSR/SA at the same ambient temperature.
F.2. Calculation of reference emissions
Reference emissions are calculated by the following equation.

RE y = å (LOSS RF,L, y ´ EFGrid, y )(1)

L

LOSSRF,L, y = LOSSPJ,L, y ´

Rdc RF,L
Rdc PJ,L(2)

Where3

JCM_MN_AM001_ver01.0
Sectoral scope: 02
REy=Reference emissions during the period of year y [tCO2/y]

LOSSRF,L,y =Reference transmission loss at transmission line L in year y [MWh/y]EFGrid,y=

CO2 emission factor of the grid in year y [tCO2/MWh]

LOSSPJ,L,y=

Project transmission loss at transmission line L in year y [MWh/y]

RdcRF,L=RdcPJ,L=

Direct current resistance of transmission line L using currently usedtransmission conductors (@20 deg. C) [Ω/km]
Direct current resistance of transmission line L using LL-ACSR/SAconductors (@20 deg. C) [Ω/km]

G. Calculation of project emissions
Project emissions are calculated by multiplying transmission loss in the project (LOSSPJ,L) by
the CO2 emission factor of the grid (EFGrid,y).

PE y = å (LOSS PJ,L, y ´ EFGrid, y )(3)

LOSSPJ,L, y = E L,send, y - E L,receive,y

(4)

L

Where
PEy

=

Project emissions during the period of year y [tCO2/y]

LOSSPJ,L,y=Project transmission loss at transmission line L in year y [MWh/y]EL,send,y=EL,receive,y=EFGrid,y=Power sent from the point of origin/supply to the transmission line L in yeary [MWh/y]Power received at the point of receipt of the transmission line L in year y[MWh/y]
CO2 emission factor of the grid in year y [tCO2/MWh]

H. Calculation of emissions reductions
Emission reductions are calculated by the following equation.

ER y = RE y - PE y(5)

Where
ERy

=

Emission reduction in year y [tCO2/y]

REy=

Reference emission in year y [tCO2/y]

PEy=

Project emission in year y [tCO2/y]4

JCM_MN_AM001_ver01.0
Sectoral scope: 02

I. Data and parameters fixed ex ante
The source of each data and parameter fixed ex ante is listed as below.
ParametDescription of dataSourceer
Measuredaccording to IEC
RdcPJ,L

Direct current resistance of transmission line L using

60468 (Method ofLL-ACSR/SA conductors (@20 deg. C)

measurement ofresistivity ofmetallic materials).

RdcRF,LAs described in the following table
Equivalent Equivalent Equivalent
Typeoftototoenergy-sav
unit
LL-ACSR/S LL-ACSR/S LL-ACSR/Sing
AAAconductors
279/20mm2 337/27mm2 445/36mm2
RdcRF,LBased on
MNS5870: 20082(Directcurrent

Ω/km0.11580.0939

0.0718

resistanceat 20degC)

History of the document
Version01.0

Date
20 February 2014

Contents revised
JC2, Annex 1
Initial approval.

2

Allowing for 1% increase in diameter resulting in 2% reduction in direct current resistance as
defined by MNS 5870: 2008.

5