A fault protection system of a power system of a dynamically positioned vessel is provided. The power system has a power distribution bus having three or more bus subsections, electric connections including bus ties which connect the bus subsections in a ring configuration, and circuit breakers connected between the bus subsections. The fault protection system includes a generator circuit breaker for coupling a generator to a bus subsection, feeder circuit breaker(s) for coupling load(s) to the bus subsection, a first circuit breaker for connecting one end of the bus subsection to a bus tie that provides an electric connection to another bus subsection, the first circuit breaker being a bus tie breaker, a second circuit breaker for coupling another end of the bus subsection to a further bus subsection, protection relays for operating the circuit breakers, and communication links between protection relays that exchange information via said communication links.

Fault Protection System For A Power System Of Dynamically Positioned Vessel

Principles for enabling power management techniques for virtual machines. In a virtual machine environment, a physical computer system may maintain management facilities to direct and control one or more virtual machines executing thereon. In some techniques described herein, the management facilities may be adapted to place a virtual processor in an idle state in response to commands from a guest operating system. One or more signaling mechanisms may be supported such that the guest operating system will command the management facilities to place virtual processors in the idle state.

Power-saving operating system for virtual environment

A system, method and controller for managing and controlling a micro-grid network. The system includes a plurality of energy resources including at least one dispatchable energy resource and at least one intermittent energy resource, wherein the at least one of the energy resources is an energy storage element and at least one of the intermittent energy resources is responsive to environmental conditions to generate power, a controller configured to record operational constraints of the energy resources, obtain an environmental condition prediction and generate a component control signal based on the environmental condition prediction and the operational constraints corresponding to the energy resources. The controller is further configured to receive a network disturbance signal and generate a dynamic control signal based on such disturbances.

System, method and controller for managing and controlling a micro-grid

In one embodiment, an energy manager determines respective energy profiles of one or more local end-devices for which the energy manager is responsible. Through communication between a power grid controller and the energy manager, one or more aspects of power grid operations may be controlled based on the communicating and the respective energy profiles. For example, in one embodiment, upon receiving a global demand response (DR) request, the energy manager determines respective specific DR control for the one or more local end-devices based on the received DR request and the respective energy profiles, and transmits the respective specific DR control to the one or more local end-devices, accordingly. In another embodiment, power grid operations may be stabilized based on the respective energy profiles.

Adaptive control of power grid operations based on energy profiles

A system, method, and apparatus for local demand response between alternative-energy power-generators, traditional controlled-energy power-generators, and power-consuming loads coupled to a DC bus are disclosed. As a DC bus operating voltage fluctuates between a minimum bus operating voltage to a maximum bus operating voltage, it triggers different power-generators and different power-consumers each having staggered control voltage ranges that enable them to come on-line or go off-line, depending on the bus operating voltage, thereby providing distributed, autonomous and self-regulating demand response performance. Loads vary from opportunistic loads at high alternative-energy generation scenarios, to necessary loads powered by backup or traditional power-generators for low alternative-energy generation scenarios. Safety limits are provided with voltage limits and foldback limits.

System and method for integrating and managing demand/response between alternative energy sources, grid power, and loads

A method and a system for power management for a plant electrical network are provided. The power management system over a plant-wide communication network includes both concepts of hierarchical level and distributed level power management using multiple controllers. At least one controller in the power management system is configured for power management in a first local process area within the plant electrical network and is capable to communicate with at least a second controller configured for power management in a second local process area within the plant electrical network over the communication network.

Method and system for power management

A method and system for distributed power management with individual IEDs in a substation are disclosed. An exemplary technique can include providing multiple IEDs in a power network in the substation and integrating an intrinsic load shedding function in each IED. The technique can include identifying a power imbalance state at an individual IED and load shedding the individual IED using an intrinsic load shedding function when a power imbalance state is identified in a coordinated manner to achieve distributed power management in the substation.

Method and system for distributed power management

A power management system for a plant electrical network using plurality of controllers configured for power management such that a first controller from the plurality of controllers is configured to perform power management in a first local process area within the plant electrical network and is capable to communicate with a second controller that is configured for power management in a second local process area within the plant electrical network over a plant wide communication network. The power management function in the first local process area is performed based on the information communicated between the first controller and the second controller or/and based on power balance computation carried out for plant wide electrical network or that for the first local process area. The power management function includes slow load shedding to control load condition in power equipment in the plant electrical network. The method for power management and slow load shedding are provided along with the controller for carrying out power management function in the plant electrical network.

A method and system for power management in substations

A method for engineering and configuration of one or more IEDs for a function in a substation automation system is disclosed. Also disclosed is a configuration wizard for implementing the method. The method includes creating pre-defined type definitions for an application function, providing a selectable menu for selection of appropriate parameters with respect to the application. Using these parameters and the pre-defined type definitions. The method includes creating process configuration outputs for the application function, and configuring the one or more IEDs based on the process configuration outputs.

Method and system for engineering a substation automation system

Synchronization of two live power networks has always been a challenge. Mostly this has been accomplished by manual operation. The problem becomes more severe when the number of circuit breakers to synchronize, power sources and the complexity of the electrical network increases. The IEC 1 communication standard is widely accepted and is now used extensively for realizing substation applications involving multiple protection and control devices. In this paper an intelligent solution for the automatic synchronization of the live power networks using IEC 1 is proposed.

Ganesh Kulathu

Papers

Method and system for power management

Method and system for distributed power management

A method and system for power management in substations

Method and system for engineering a substation automation system

A coordinated solution for the network wide circuit breaker synchronization using IEC 1