Location Of Statcom For Power Flow Control

A Power system is an connection of generators to load centres. Through H.V. electrical lines & in general is controlled mechanically. It can be divided into 3 subsystems: Generation, X’mission and Distribution-systems. The electric power demand is Growing and building of new generating units & transmission circuits is becoming difficult because of environmental & economic reasons. So, power utilities are forced to depend on utilization of existing generating units and to load existing lines close to their heating limits.

The power lines you see throughout the country that is being suspended above the ground with the help of tall metal towers is designed to carry and transport high voltage transmissions. This is important because at this stage the higher the voltage the more efficient as it transports throughout the network of power lines. Once the voltage passes through transformers the voltage is lowered to a level that is suitable to being distributed for safe usage.

Our society today is ever more dependent upon electricity in all aspects of life. Keeping the power infrastructure throughout the United States secure and functioning properly should be considered a high priority for both private sector and government. Lacking properly functioning power caused by an outage has widespread impact not just on common conveniences being unavailable but also on critical areas such as emergency services, transportation, water distribution, communication and food production and storage.

A power system is always in a state of disturbance that may lead to instability in the system. The consequences of a major power supply interruption can prove to be so disastrous, that every effort must be made to reduce the impact of such a disturbance. The process of determining the steadiness of the power system following any upset is known as security assessment. In particular, MW security assessment is a process to evaluate the security of the power system following a disturbance. It is done considering the loading conditions in respect of MW power flow on the lines. Each line has a capacity to carry MW power up to transmission line design limits beyond which the lines may trip due to overloading. In this paper MW security assessment has

Present power system is in need of a high level of redundancy and reliable protection devices along with the periodic maintenance to keep the system healthy. In these circumstances, there is a need for an efficient protection

Finally, the electricity will need to be distributed from the transmission system to each individual consumer. This will be achieved through the use of distribution substations which connect to the transmission system (lowering the transmission voltage through the use of transformer).

For a perfectly planned power grid, the power generation of each region is matched with the power consumption within this region, so that the power lines will always carry a reasonable workload. If one power line fails to work, other parallel lines would have to carry extra power, which is bad for safety and may lead to fire. The power system operators are the ones

Electricity is vital to everyone in the modern day. It has enhanced many aspects of our life to make life easier and efficient. These aspects include communication, entertainment, work, transportation and food. Electricity is produced by a generator in power plants through the process of electrical energy generation. This process goes through chemical combustion, nuclear fission and the kinetic energy of wind and flowing water to fuel heat engines, which primarily drive electromechanical generators to generate the electricity that we all highly have the need for. This huge need for electricity initiates a thriving demand for electricity generation therefore many power plants are desired worldwide.

Further it’s considered integrating high-voltage direct-current (HVDC) technology to transmit energy from the renewable energy production sites to cities. It provides the better HVDC system with efficient intercity links to allow for energy exchange as demand varies.

Power system is a large electrical network used for generation, transmission and distribution of electrical power. Electrical

The grid, which includes transmission and distribution lines, is a critical aspect of the energy industry that has become antiquated in recent years. The first problem is caused by an increasing demand, 2.5% annually over the last 20 years, leaving the grid overused [gungor]. The second problem is the age of the infrastructure the average age of the power-grid transmission lines are 50–60 years [gungor]. Because the increase in demand and age of the infrastructure coupled with the nonlinear nature of the electric power distribution network have caused serious network congestion issues, which has caused several major blackouts [gungor]. In addition to network congestion, the existing power grid also is out-of-date in the following areas: communications, monitoring, fault diagnostics and automation which further increase the possibility of region-wide system blackout [gungor]. All the aforementioned problems of the “traditional” grid have been increasingly more difficult to meet in the 21st centuries demands, including power-grid integration, system stability and energy storage and an overall decrease in reliability [erol,gungor].

HVDC transmission may also be selected for other technical benefits. HVDC can transfer power between separate AC networks. HVDC powerflow between separate AC systems can be automatically controlled to support either network during transient conditions, but without the risk that a major power system collapse in one network will lead to a collapse in the second. HVDC improves on system controllability, with at least one HVDC link embedded in an AC grid—in the deregulated environment, the controllability feature is particularly useful where control of energy trading is needed.

Power transmission lines is basically the process of transmitting the electrical energy from the generating power plant to the substations and from there to the costumers As the population of the world increased ,cities are expanding more buildings construct nearby high voltage power transmission lines. There are two types of power transmission lines the first one is overhead and the second is underground. Due to the increase of power demand has led to increase the need of transmitting a large amount of power over a long distant .But this increase has some majors consequences to the environment. From aesthetic perspective cities can be damaged. Living near places with overhead power transmission lines could cause a health problems to human

There two ways to stabilize power supply, first approach is a Corrective approach, where new power stations are built, existing infrastructures are upgraded and new maintenance plans are developed and followed. This approach is a

Abstract--Multilevel inverter finds its application in high voltage high power converters. Various topologies of multilevel inverter provides several advantages such as high efficiency, low voltage stress, low EMI, better waveform and improved THD. This paper presents the development of Xilinx FPGA as a control circuit for generation of the pulse width modulation (PWM) signal for the single-phase cascaded H-bridge multilevel inverter and modified H-bridge PWM multilevel inverter. The XILINX FPGA based modified multilevel PWM inverter was implemented by adding bi-directional switches to the conventional bridge topology. Xilinx System Generator/MATLAB software has been used for simulation and verification of the proposed circuit before implementation.