Lab Report on Emerging Transmission System

Emerging Transmission System 1
Lab Report on Emerging Transmission System
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Table of Contents
Summary......................................................................................................................................5
Research background...................................................................................................................6
High-voltage Alternating current Experiments...........................................................................6
High-voltage Alternating current Technologies..........................................................................7
Experimental Methods and Results.............................................................................................8
Load Regulation Experiments.....................................................................................................9
Operational mode.......................................................................................................................12
Operation with signal modulation.............................................................................................13
Technical Analysis.....................................................................................................................23
Discussion..................................................................................................................................25
Conclusion.................................................................................................................................27
Bibliography..............................................................................................................................28

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Summary
This assignment is a lab report which aims at examining the high power and voltage transmission
systems, and it is conducted through the use of the didactic hardware systems. In essence, the lab
report is divided into two primary sections which include an experiment on the HVDC or High
Voltage Power Transmission while the second section examines the AC Power Transmission.
Furthermore, the first section has various parameters which are examined, and these include
determining the DC voltage influence on the AC variables converter station and analysing the
single behavior of the HVDC converter results which are depicted during the capacitive and the
inductive reactive current supply. Also, the first section also evaluates the power flow associated
with the close coupling, the overall converter stations loss analysis as well as the operating
characteristics in line with the overhead wires. On the other hand, the second section aims at
evaluating the monitoring all the network parameters, and this is done using SCADA. Finally,
the AC Power Transmission also used to reduce the peak loading as a result of testing the energy
management in the system. Minimum peak value obtained at that stage is ∑Pmin = 500 W.
High-voltage Alternating current transmission also is known as the high-voltage direct-current
entails the transmission line and converter station which mainly operates to convert the
alternating grid and conventional electricity voltage to the direct voltage. Furthermore, the
HVDC transmission also has an end station converter, and this serves to convert the direct
voltage at the end of the system back to the alternating voltage. Also, this system is capable of
transmitting energy in both directions while the second converter station in the HVDC plays a
vital role in regulating the power in the system.

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Research background
Mostly, electrical power is distributed to the end-users once it has been generated and the
distribution is done via a transmission system to different located sites. The electric power
consumers are broadly divided into categories which include the commercial establishments and
the domestic acts [1] .Thus, the transmission lines will carry the power from the various
substations to the designated consumers in the long run. High-voltage Alternating current
(HVAC) is often suitable for shorter and medium distance transmissions of power whereas the
High voltage Direct Current also known as HVDC mainly operates for the long-distance
transmission. In addition, the HVAC is more economical when dealing with short distance and
have imminent disadvantages on long distances thus, making HVDC suitable for long distance
transmissions [2] .Hence, the theoretical research section for this lab report mainly discussed in
the subsequent sections as follows
High-voltage Alternating current Experiments
High-voltage Alternating current transmission also is known as the high-voltage direct-current
entails the transmission line and converter station which mainly operates to convert the
alternating grid and conventional electricity voltage to the direct voltage. Furthermore, the High-
voltage Alternating current transmission also has an end station converter, and this serves to
convert the direct voltage at the end of the system back to the alternating voltage [3]. Also, this
system is capable of transmitting energy in both directions while the second converter station in
the High-voltage Alternating current plays a vital role in regulating the power in the system.
Thus, the diagram below shows a setup experiment which can be used to conduct a High-voltage
Alternating current analysis and illustration is marked as figure 1

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Figure 1: HVDC Experimental Set-Up
High-voltage Alternating current Technologies
This technology uses two converters at the two terminal stations where one station is marked as
U1 and the other station as U2. The U1 represents a rectifier while the U2, on the other hand,
represents an inverter provided that the power is being transmitted from the grid to another.
Furthermore, the two transformers are often used in the system, and their presence demarcates
the possibility of having variable voltage ratings in the network. The central facility core is the
conductor with DC, and this can be designed in a manner that it is either a sub-surface cable or
an overhead line [4]. However, the rectified current can exhibits ripples mostly on the chokes
and in the induction cable. There are two key technologies which often used in the recent days
in line with the HVDC transmission, and these technologies are the classic HVDC which involve
the use of line-commutated converter (LCC) and the modern HVDC also known as a voltage-
source converter (VSC). The figure below shows the illustration for the HVDC technologies and
its advanced application in the electric power transmission

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Figure 2: HVDC Transmission Converter
Experimental Methods and Results
The diagram below shows the set up which was used to conduct the experiment
Load Regulation Experiments
This experiment aims at examining the energy management in line with the reduced peak
loading. Before the commencement of this experiment it is essential to evaluate and take note of
these aspects:
1. First, study the analysis of the experimental set up by checking the load regulation as well
as configuring the settings described in it.