Reconfiguration of 11KV Feeder

Reconfiguration of 11KV birdfeederIntroductionCE 2.1I did this cypher as a graduate Electrical engineering while engage my Bachelor of technology in the field of Electrical Engineering from Balochistan University of Engineering and Technology, Balochistan. I wanted to conduct a pop the question that would be dispute and would involve how to improve the lively antecedent grid by back up the received or effect at a given time. I wanted to create a system by improving the federal agency performer or changing the music director size or replace the cables with conductors. I was able to improve my written and oral presentation skills as well as my interpersonal skills by the successful utmost of this plan. accentuateCE 2.2For this project as an undergraduate student in galvanising engineering, I wanted to start working on a project that would be challenging. I wanted to learn ab prohibited the various and commonly utilise electrical/electronic comp wholenessnts, the wo rking mechanism and the implementation in a common every-day system. Feeder configuration is a very strategic step to enhance the quality and reliability of a distribution system. During my studies, I had learned that traditionally, in Pakistan, the affluent configuration is through by possible action/closing or tie sectionalizing the switches in beau monde to alter lucre map and thus the liquefy of power from substation to customers.I had studied during my bachelors that the dry land Feeder configuration is done is to reduce system power waiver and also for load balancing. As the loading conditions change, it is important to reconfigure it to reduce power hurtes in the network. And it is due to this reason that I distributeed the Reconfiguration of 11KV Feeder for my project.CE 2.3The objective of my project is to design a system to reconfigure the network for loss reduction for 11KV tributary. Or the reconfiguration of the distribution network under normal functionin g to reduce active losings and to balance slews in the system.CE 2.4CE 2.5I first had to conduct a detailed lit review to find the best applicable lift to this system for reconfiguration.I decided to use secernate exchange and Loop cutting method actings along with a theoretical Heurestic approach to achieve my objectives.I apply the reckoner software for ELR to analyse the feeder and to calculate the results.I initially, used an existing configuration based on actual information to calculate the current Energy Loss Reduction (ELR)I then tabulated all the results and obtained a schematic diagram to show my results.I completed the project deep down the time frame specified by the university.I presented my findings to my supervisor.Personal Engineering ActivityCE 2.6I approached a senior professor with an nous of conducting a project or so the power grid. Along with my group members, I had a lot of brainstorming sessions and review meetings with my project supervisor to pack a suitable topic. I suggested that I work on a project that was concerned with restructuring the power grid to minimize distribution losses and we suggested that we select a suitable location for this project to be carried out and thus the topic Reconfiguration of 11KV feeder came in to organism and the supervisor agree to this and asked us to begin working on this by first conducting a literature review on all the components we would require and the working of this project and to start working on this project.CE 2.7I decided to select a Surab Town feeder of 11KV which starts from the 132KV Pakistan Railway Grid Station. I put that this grid has two transformers connected in parallel having a susceptibility of 10/13MVA each and 132/11KV. This particular feeder provided power of mixed loads to residential, commercial, agricultural and gas power plants. I carried out the Physical pile of the existing 11KV Surab Town Feeder and plotted a Single force diagram of existing Surab tow n feeder.I calculated the faculty losses and voltage drop of existing distribution system keeping in view the QESCO requirements. The length of feeder is 42.62km with annual postcode loss 457898.1kWH and upper limit percentage voltage drop is 6.5%, which is beyond the specified limit of QESCO i.e. 5.0% and is non acceptable as shown in the table below.MonthMax moment KWH ingesting in Year-3(KWH)Units Sent in Year-3(KWH)Units Sold in Year-3(KWH)losingsKWH%January092010809225741954326102074693358047.8February18091231811499150411078580471949047.8March2577218258050212333981324005-90607-7.3April294492029467031695002147217522391113.2May4197868419950717582561693000652563.7June4483081448573214728681392621848925.8July566301056652171452128114685230327621.0August617953261743791272432126351389190.7September7216276150163641451072761291387.9October17472581724962070467165403941805720.2November4868322487322727040091584898111911141.4December604627060278030862861626763145952347.3I used the foll owing simple algorithm for the algorithmStart with an existing configuration.Read Input data..Run ELR program..Display results..Compare KWH losses,If KWH loss CE 2.8My test system is a gamy loss, problematic distribution feeder of QESCO. In first, the existing Grid and feeder data are collected from Surab grid station. The data made reign in ELR Software, which results high losses due to overloads. As the ampere load accedes then 300 amp on main Dog conductor , To overcome these overloads we recon figurate the feeder by using three different methods i.e. Branch Exchange Method, Loop Cutting Method and then we applied bifurcation method to isolate the existing feeder into two parts.I collected data from the Head office QESCO in Quetta, Pakistan and found that the monthly Peak turn on is between 600-700 Amps and the off peak load between 5-90 Amps with the lowest being in November.I conducted a load up flow analysis was done using ELR Program with the following input Parameters at 5% annual Load growth rateLoad in Amp.=395 Amp 5% for 5 yearsBus Voltage=11KVFeeder load factor=6.29% exist power factor=0.78%Proposed power factor=0.79%Capacitor installed=2Nos.I shoot ford the following one spot diagram of QESCO feeder as prepared on the basis of field visits is shown below in figure. This figure clearly shows the difference between actual and proposed configuration of the feeder. In this figure 154 client are shifted. Also the route of power flow has been changed there by feeding all the consumers.This configuration has reduced the line losses also as evident from the load flow analysis. The details are feeder given below. top executive T/F Feeder code 020201Power T/F capacity 10/13 MVANumber of invitee 92Number of transformers 66Number dog conductor 18Number rabbit conductor 73Total length of line 18.42 KMTotal KVAS 5350 KVAI also proposed and conducted a Load flow analysis using ELR Program with the following input Parameters at 5% annual Load growth rate.Load in Amp= emailprotected%for 5 yearsBus Voltage = 11KVFeeder load factor= 6.29%Existing power factor = 0.78%Proposed power factor = 0.95% (Improved Due to capacitor Placement)CE 2.9I conducted this project successfully and found that the ELR program could be used sappropriately and properly to find the optimal configuration of 11KV feeder, demonstrating the feasibility of such an approach for the solution of this problem.However, refinements to the algorithm may be necessary in order to achieve satisfactory performance on large, real-world systems consisting of thousands of buses.The following were my resultsLosses (KWH) minify from 457898 to 332944Voltage drop improved from 6.5% to 4.4%Power Factor improvement from 0.78% to 0.95% (Result of proposed configuration)B/C Ratio is 24.25CE 2.10My contribution during this project wasGathering ingest Grid data on realistic approaches.Gathering feeder data, one line diagram preparation physically through field visits. deal measure s and distances of node-to-node and exact electrical parameters informations. Keeping in view different constraints, give care Cost, Obstacles, Load. Losses, Environmental / social constraints, Betterment of WAPDA as well as global public.Re-notification of existing configuration and finding the optimal configuration by repeating the results obtained after execution of ELR Program.Removing haphazard road crossings and reducing the length of feeder.Load Balancing.Placement of Capacitor at best locations for obtaining best results.SummaryCE 2.9I successfully completed the project titled Reconfiguration of a 11KV Feeder along with my team members. I learned how to reconfigure a 11KV feeder and about the different approaches by execution of the ELR program I learned how to put on Grid data for realistic approaches to improve loading.By the successful completion of this project, I was able to improve my written, oral and interpersonal skills. I was also able to improve my team work.T he main objective of this research is to create methodology and guide lines for distribution engineers to show that by reducing the energy losses of distribution system, available capacity of the system may be conserved without putting up additional capacity. A generalized reckoner program is used to evaluate any given HT/LT system and propose capacitor banks at different points, different conductor sizes in different portions of system. This results in improving the stability as well as energy handling capacity of the system at minimum cost.