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Hello everyone, in this lesson we're going to determine the y bus matrix, also known as the admittance matrix for a power system.
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The diagram shows a network with complex impedances between buses.
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Let's walk through how to build the matrix step by step.
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We begin by converting each line impedance into midtens by taking the reciprocal.
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For example, j1 .0 becomes negative j 1 .0 to the negative 1 equals negative j 1 .0 equals negative j.
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The mittens for j .25 becomes negative j 4 .0.
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These values will form.
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The off -diagonal elements and contribute to the diagonal as well.
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The off -diagnal elements represent the negative emittance between two buses.
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For example, between bus 1 and 2 with j 1 .1 .1 impedance, y -12 equals negative 1 .0 equals negative 1 .0 equals negative j 1 .25 equals negative j .1 .25 equals negative j .8...