OPTIMAL PMU PLACEMENT THESIS

Transmission SystemsPlacement algorithms should be optimized for either the transmission system or the distributionsystem [18]. The distribution system needs to be monitored in real time so that minor issuesrelating to grid stability can be noted and fixed before they cascade into system failure. Some ofthe previous works did not include the computation time, therefore it is not listed on the table. Stage 2 is summarized in two steps below. Observability can be determined using either numerical methods or topology based algorithms. This paper proposes a method for optimal placement of Phasor Measurement Units PMUs in state estimation considering uncertainty. On the other hand, stochastic algorithms tend to have some randomness andmay take a slightly different path when the program is run.

After the pre-greedy and greedy algorithmpart of the algorithm runs, the placement result can be seen in Figure 3. Thiscalculation can be summarized in one step below: The same paper that used the exhaustive search method also explored simulated annealing [29]. Their advice and guidance wereinstrumental to the success of my research. The minimal number case was found using an integer programming method. However, the high cost of these devices, in addition to the communication infrastructure that would be needed, makes it unfeasible to place them at every node on a feeder. On the other hand, stochastic algorithms tend to have some randomness andmay take a slightly different path when the program is run.

Some terminology is described below: Additionally,a cost analysis could be explored.

optimal pmu placement thesis

To further explain this, a walkthrough will be done for the IEEE node network. This will be explainedmore in the following example.

Optimal Phasor Measurement Unit Placement for Monitoring of PEA Bowin Power

The aim was to keep this as low as possible in order to be feasible forreal world distribution networks with many nodes. Percent CoverageFirst, the percent coverage was analyzed and thess between the proposed algorithm and theminimum case. As it can be seen, proposed method has an appropriate speed to reach the full observability of single line contingency term.

  CSSSA CREATIVE WRITING ACCEPTANCE RATE

Our image viewer uses the IIIF 2. The thesis also examines different approaches to solve the power system state estimation problem and explores the effect of the number of deployed PMUs on the accuracy of state estimation. Note that this method is a little more complex than the summarized steps listed and the fullmethod can be read in [29].

The total numberof combinations can be calculated using 2.

Referring back to thezis example in Figure 3. The reason for this is such: This method can be applied on to the system topology matrix in order to find the unobservable nodes.

optimal pmu placement thesis

However, if the switch is open, there is no way to observe node 3. By considering uncertainty, a multiobjective optimization exercise is hence formulated. Inertia slows the rate offrequency decline when a fault or failure on the system occurs and is a very important componenton the power system.

For the test point, all combinations are generated and tested. Due to these challenges, there is currently a limit to the number of renewable energy sourcesthat can be connected to the grid.

Many placement algorithmspreviously used for transmission systems will be far too computationally expensive for distributionsystems.

Incorporation of PMUs in power system state estimation

Therefore, the global searching ability can hopefully be maintained [ 2127 ]. In the second section, Section 2. These important topics are imperative for understanding certain aspects of theliterature review as well as the proposed solution later in the thesis.

  MR CHUNS HOMEWORK SITE

As the topic of19model order reduction or state estimation is not relevant to this thesis, it will not be described. Again, the column numbers refer to the node numbers.

Optimal PMU Placement with Uncertainty Using Pareto Method

And last, but not least, I would like to thank my dad, John Kerns, for his unending support. Calculate how many nodes would be unobserved for each scenario. They are there to reduce power losses pmmu improvepower quality [24] by opening and closing them at key times.

Afterwards,they applied their simulated annealing algorithm. The second issue is that power demand from utility users has been increasing due to the in-creasing number of electronic devices being used and operated.

Optimal Phasor Measurement Unit Placement for Monitoring of PEA Bowin Power

Abstract In this thesis, a strategy for phasor measurement unit PMU optimal placement and signal selection is proposed for monitoring critical oscillations in electric power systems. However, the high cost of these devices, in addition to the communication infrastructure that would be needed, makes it unfeasible to place them at every node on a feeder.

This corresponds to a lower SORIvalue and therefore lower system reliability.

Next, the generated power flows along the transmission systemto the distribution system. How-ever, although this method should yield faster results than exhaustive, the results section in [29]show that this algorithm was much slower than their customized exhaustive method. However, as previously stated, there is a tradeoff that makes this placement configuration prefer-able.

optimal pmu placement thesis