Method and system for locally controlling power delivery along a distribution feeder of an electricity grid

A method for locally controlling delivery of electrical power along a distribution feeder of an electricity grid, the distribution feeder comprising a substation and a plurality of nodes, and one of the plurality of nodes comprising a controllable reactive power resource, the method comprising, for a feeder segment in the distribution feeder:

• obtaining an actual voltage magnitude at an upstream node and at a downstream node of the feeder segment, and a real power value at the upstream node;
• setting a target voltage phasor at the downstream node based on the actual voltage magnitude at the upstream node and at the downstream node, and the real power value at the upstream node;
• and
• controlling operation of the controllable reactive power resource based on the target voltage phasor.

A system for locally controlling delivery of electrical power along a distribution feeder of an electricity grid, the distribution feeder comprising a substation and a plurality of nodes, wherein a pair of adjacent nodes define a feeder segment of the distribution feeder, and the feeder segment comprises a controllable reactive power resource, the system comprising:

• a reactive power resource controller communicative with and programmed to control operation of the controllable reactive power resource;
• a server computer communicative with the reactive power resource controller, and comprising a processor and a memory having encoded thereon program code executable by the processor to:
• receive an actual voltage magnitude at an upstream node and at a downstream node of the feeder segment, and a real power value at the upstream node;
• set a target voltage phasor at the downstream node based on the actual voltage magnitude at the upstream node and at the downstream node, and the real power value at the upstream node;
• and
• transmit the target voltage phasor to the reactive power resource controller, such that the reactive power resource controller operates the controllable reactive power resource based on the target voltage phasor.

A method for locally controlling the voltage magnitude along a distribution feeder of an electricity grid, the distribution feeder comprising a substation and a plurality of nodes, and comprising a plurality of controllable power resources each located at one of the plurality of nodes, the method comprising, for a feeder segment in the distribution feeder:

• obtaining an actual voltage magnitude at an upstream node and at a downstream node of the feeder segment, and a real power value at the upstream node;
• setting a target voltage phasor at the downstream node based on the actual voltage magnitude at the upstream node and at the downstream node, and the real power value at the upstream node;
• determining operating costs for the controllable power resources;
• determining a combination of the controllable power resources to use, wherein the combination comprises one of the plurality of controllable power resources;
• and
• controlling operation of the combination of controllable power resources based on the target voltage phasor.