Structure Learning and Statistical Estimation in Distribution Networks - Part II
- Univ. of Texas, Austin, TX (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Limited placement of real-time monitoring devices in the distribution grid, recent trends notwithstanding, has prevented the easy implementation of demand-response and other smart grid applications. Part I of this paper discusses the problem of learning the operational structure of the grid from nodal voltage measurements. In this work (Part II), the learning of the operational radial structure is coupled with the problem of estimating nodal consumption statistics and inferring the line parameters in the grid. Based on a Linear-Coupled(LC) approximation of AC power flows equations, polynomial time algorithms are designed to identify the structure and estimate nodal load characteristics and/or line parameters in the grid using the available nodal voltage measurements. Then the structure learning algorithm is extended to cases with missing data, where available observations are limited to a fraction of the grid nodes. The efficacy of the presented algorithms are demonstrated through simulations on several distribution test cases.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA). LDRD
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1170265
- Report Number(s):
- LA-UR-15-21076
- Country of Publication:
- United States
- Language:
- English
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