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A method and a system for power management in substations

A power management and substation technology, applied in the direction of power network operating system integration, information technology support systems, electrical components, etc., to solve problems such as load reduction and low availability of interconnected converters

Active Publication Date: 2012-12-19
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A method and a system for power management in substations
  • A method and a system for power management in substations
  • A method and a system for power management in substations

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Embodiment Construction

[0031] The systems and techniques described herein provide a unique power management solution. As an exemplary power management functionality, load shedding has been described herein, however, the same concept can be extended to other functions in industrial settings, such as power control, load restoration, sequential starting, etc. Similarly, the process industry has been used herein as a non-limiting example where such power management solutions may be applied.

[0032] The systems and techniques described herein include providing additional process controllers as needed, local controllers for local power management, to operate in a hierarchical fashion with process controllers designated for overall plant-level power management. The designated process controller for overall plant-level power management is referred to herein as the central controller. Additionally, the systems and techniques described herein are also applicable to distributed power management environments,...

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Abstract

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.

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...

Claims

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Application Information

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IPC IPC(8): H02J13/00H02J3/14
CPCH02J13/0062H02J13/0079Y04S10/18Y02B70/3225Y02E60/724Y04S20/222H02J3/14H02H3/033H02H3/05H02H7/261H02J13/00016H02J13/00028H02J13/00034H02J13/0004Y02E60/00H02J2310/60
Inventor G.库拉图A.古普塔E-I.安顿
Owner ABB (SCHWEIZ) AG
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