CDFLOW: A Practical Tool for Tracing Stationary Behaviors of General Distribution Networks

Robust voltage regulation in unbalanced radial distribution system under uncertainty of distributed generation and loads

“…Since voltage regulation limits the voltage magnitude between 0.95 p.u. and 1.05 p.u., the monotonicity is generally valid for both real and reactive power flows in balanced and unbalanced systems [28,33]. The monotonicity property allows the calculation of the boundaries of magnitude of voltages at a balanced power system by solving two non-linear programming problems at two sets of loading condition in which all loads are set at their corresponding maximum and minimum values, respectively [17].…”

“…On the other hand, in an unbalanced network, due to the unbalance in mutual impedances, voltage magnitudes may monotonically increase or decrease when the power flow increases [25,26,33]. Hence, the minimum magnitude of voltage at any particular phase of a bus does not necessarily coincide with minimum magnitude of voltage of other phases of the same bus.…”

Distributed continuation power flow method for integrated transmission and active distribution network

“…In each correction step of transmission CPF computation, the state variable vector x pcc and load parameter k can be obtained by solving (15,16) and will be transmitted to each distribution grid control center. Taking x D i ;pcc as the 4 Distributed computation of global CPF…”

“…The CPF method has been validated to be a good method to compute the load margins of both TPSs and DNs and it could consider the inequality constraints which describe the nonlinear characteristics of electrical components [10][11][12][13][14][15][16][17]. In [18] a distributed CPF method was presented to compute the available transfer capability (ATC) of interconnected power grid which is composed of many transmission sub-grids.…”

Unbalanced three-phase continuation power flow for distribution networks with distributed generation

“…Because there are no matrices in this method, it cannot employ any parameterization techniques and fails to overcome the divergence of backward/forward sweep method at the critical point. On the basis of [13], the impacts of DG penetration on static stability limit and system voltages are investigated in [15]. However, the operation constraints of DGs and the identification of bifurcation type were not studied in the above works.…”