Method and system for power management in a substation

Abstract

A power management system for a plant electrical network employs a 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 of In communication with a second controller configured for power management in a second local process area within the plant electrical network over the plant-wide communication network. Power management functions in the first local process area are performed based on information communicated between the first controller and the second controller or / and based on power balance calculations performed for the plant-wide electrical network or for the first local process area. Power management functions include slow load shedding to control overload conditions in electrical equipment on the plant's electrical network. A method for power management and slow load shedding is provided along with a controller for implementing power management functions in a plant electrical network.

Description

technical field [0001] The present invention relates generally to the field of power management systems, and more particularly to power management in substations in the process industry. Background technique [0002] Generally, an electrical or power substation involves the transmission and distribution of electricity using converters to change voltage from high to low or vice versa. Electricity can flow through multiple substations between the power plant and the consumers or loads, and the voltage can be transformed in multiple steps. [0003] Industrial settings involve intensive energy consumption and contain one or more dedicated substations, including upstream substations connected to the main power source (grid or internal generators) and downstream substations that distribute power to different load centers distributed over various parts of the industry. Furthermore, an industry may have its own power generation system to meet its energy needs, and also have a power...

AI Technical Summary

Problems solved by technology

In the event of a grid converter overload, the central process controller sheds the load to correct the overload condition, and in the event of an interconnected converter overload, the overload protection can be activated and isolate the converter, resulting in greater availability of the interconnected converters. Low

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