Analysis of Technical and Economics High Voltage Overhead Transmission 150 kV Development in Industrial Area of High Voltage Consumers PT. Lotte Chemical Indonesia

In order to increase revenue, PT PLN (Persero) entered into a power purchase agreement with PT. Lotte Chemical Indonesia Cilegon. investment in the relocation of 150 kV high voltage overhead lines. This research is very important as a small-scale simulation given the large number of electric power transmission projects implemented by PLN. This study analyzes the impact of the relocation of the 150 kV T/L and found that the existing material that was dismantled was either utilized/not reused so that it has the potential to increase/decrease investment for PLN. The research method is in the form of data analysis on the feasibility study of the PLN project. Calculation analysis by calculating the value of existing assets which is then used as a reference in calculating sensitivity analysis which is then determined 3 scenarios using financial indicators IRR, NPV, B/C Ratio and Payback Period (PB). The results of the study show that scenarios 1, 2 and 3 have positive IRR and B/C ratio values and there is a difference of 1 year for the payback period between scenarios 1 and 3 vs scenario 2 and the highest NPV is in scenario 3.


INTRODUCTION
PT. PLN (Persero) West Java Development Main Unit is a PLN unit tasked with carrying out electricity infrastructure development in DKI Jakarta, Banten and parts of West Java.Projects scope are poweIDRlant, transmission and substation construction projects.One of the strategic projects that is PLN's mainstay in order to increase PLN's revenue is the transmission development project in the context of connecting electricity to high voltage consumers (KTT).One of the strategic summits in Banten Province is PT.Lotte Chemical Indonesia, a company engaged in the petrochemical sector which is currently expanding its business after the Covid 19 pandemic.The location of PT.LCI is located in the Merak Industrial Estate.This business expansion will certainly have an impact on electricity consumption in order to meet its business production.In this regard, PT.LCI requires additional electric power from PLN.The additional power is stated in the Power Purchase Agreement between PLN and PT.LCI.For the first phase of 115 MVA in December 2023.Therefore PLN must invest in the construction of electricity installations to fulfill this commitment.Electricity sales in Banten province are still dominated by industrial customer groups, which are the most strategic source of revenue from PLN's perspective.The need for electricity according to the 2021-2030 RUPTL is projected to increase every year with an average growth of around 3.33% (moderate scenario).One of the industrial areas that has strategic value for selling PLN electricity is the Merak industrial area.Within the industrial area there are many large factories with various kinds of production.One of PLN's customers who have strategic value is PT.Lotte Chemical Indonesia, which has been operating around 1990 and has been a PLN customer since that year.

BASIC THEORY
In order to support the business development of PT.Lotte Chemical Indonesia, PLN, in this case as the state company in charge of providing electricity to the public, has an important role in this regard.
In the case of a new investment, PLN needs to develop a program framework contained in the form of a project feasibility study.In the sense that a project feasibility study/study is an assessment that is comprehensive and tries to highlight all aspects of the feasibility of a project or investment.The feasibility parameters of a project are generally seen from 2 aspects, namely technical/operational and financial aspects.From a technical/operational point of view, an electricity project that is deemed feasible must comply with a number of specified principles, such as operational reliability and service quality level.Meanwhile, financially a project is considered feasible if it meets the following criteria: Before determining the feasibility of the project financially, it is first analyzed technically, especially for the distance between towers and the type of conductor to be used.The references used according to PLN standards are as follows:

RESEARCH METHODOLOGY
This research method was carried out using the literature study method through books, journals, research articles, and references both from offline media and from sites available on the internet related to the discussion in this thesis.After the reference data is collected, it is followed by making a research design to answer and analyze the results obtained based on existing literature references with the formulation of the problem and writing objectives that have been previously set to support the writing of this thesis.The length of the Existing T/L that crosses the PT.LCI around 900 m requires 3 wickets so that it meets the set criteria (SPLN).Whereas the length of the relocation area is 1500 m so that by design it requires 5 wickets with the calculation of the distance between towers requiring a distance of 300 m according to the SPLN.
It has been known according to field observations that according to specifications the type of conductor for the existing one is ACSR/Drake, so after relocating the tower, at least replace it with the same or better type.According to the PLN contract data for new conductors using the ACCC/Hamburg type.For an explanation according to the table below.According to the table above, the loading for the relocated new line is still in a safe condition because the conductor used has a better/greater current rating than the previous one.The method of dismantling the tower following the transfer to a location to a new tower is a safe system or work because currently the conductor loading according to the PLN feasibility study is only burdened with no more than 50% of the installed conductor capacity.In this study, the value of existing assets will be calculated in advance, especially for the T/L transmission line that crosses the project location of PT.Lotte Chemical Indonesia.Primary data obtained from PLN for the existing asset value of the Cilegon Baru -Mitsui -Peni 150 kV overhead transmission is IDR.82,696,208,710.00.The asset value takes into account the following assets: 1. Tower asset value 2. Conductor's asset value  In total, from the 150 kV Cilegon Baru -Mitsui -Peni kV overhead transmission line, there are 27 towers along with other materials standing at that location.For the existing route that passes through the construction site for PT.LCI has 7 towers and their accessories.Of the 7 towers and their accessories, there are 4 existing towers that will be dismantled.PLN in this case will invest on requests from PT. LCI, namely the connection of 115 MVA at the end of 2023.The consequences of this as stated in the agreement between PLN and PT.The LCI stated in the PJBTL (Power Purchase Agreement), PLN must dismantle and then relocate the existing tower/tower on the Cilegon Baru -Mitsui -Peni line because at that location an expansion of the petrochemical factory owned by PT.LCI.
Investments that PLN must make to support connection to premium customers include: 1. Land Procurement for the Tower.14 The following is the cost of consulting services 2. Procurement of Services and Materials for the relocated Tower including the cost of dismantling the existing tower and the 2 Line Bay (LB) GI 150 kV Peni Works If detailed in a calculation that is in accordance with various existing sources, the investment calculation is obtained as follows: From the calculation of the 3 scenarios above, it is found that there are differences, especially in terms of payback period (PB):

CONCLUSION
Based on the discussion and analysis carried out in the previous chapter, the following conclusions can be drawn: 1. Technically, the demolition of the tower following the transfer to a new tower location is systemically safe and does not have the potential to disrupt PLN services to customers.2. The results of the sensitivity analysis show that: a. Existing assets are used as a deduction for investment found IRR values, B/C ratios, NPVs with positive results with a payback period equal to 5 years with the highest NPV and IRR.b.Existing assets are used as an investment additive found IRR values, B/C ratios, NPV positive results with a payback period of 6 years.3. The investment made is still feasible with a positive IRR, B/C ratio, NPV in scenario 3 even though the payback period (PB) is delayed by 1 year.

3 .
Isolator asset value 4. OPGW/GSW asset value 5. Value of land assets The new Cilegon -Mitsui -Peni 150 kV T/L line can be seen in the image below.

Figure 4 .
Figure 4. New line after existing tower relocation (dotted line)

Figure 4 .
Figure 4.The position of the existing assets of the 4 towers along with other main transmission materials that have been dismantled.
With positive IRR, NPV, B/C ratio indicators (profit) with NPV and IRR values in scenario 3.

Table 1 .
Demand Projection in Banten Province

Table 2 .
Financial indicators according to the PLN project feasibility study

Table 3 .
Tower Type for Overhead Line 66 kV & 150 kV

Table 4 .
Base range, weight range, wind range

Table 6 .
Table explanation of the loading can be seen below.Transmission loading conditions at the LCI Summit location according to the KKP

Table 7 .
PLN InvestmentThis scenario includes a financial analysis according to the project feasibility study.With a total investment value calculation of IDR 282,018,000,000.00, the simulation results obtained are as follows:

Table 9 .
Indikator Finansial Scenario 2 This scenario uses feasibility study analysis calculations added to the previously calculated existing asset values.This calculation focuses on dismantled assets that can be reused by PLN either for own use in other locations or sold with the assumption that they are 100% used.The total investment issued according to scenario 2 is as follows: