Invention Grant
- Patent Title: Coordinated frequency load shedding protection method using distributed electrical protection devices
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Application No.: US16164401Application Date: 2018-10-18
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Publication No.: US10734810B2Publication Date: 2020-08-04
- Inventor: Joseph Matamoros
- Applicant: S&C Electric Company
- Applicant Address: US IL Chicago
- Assignee: S&C Electric Company
- Current Assignee: S&C Electric Company
- Current Assignee Address: US IL Chicago
- Main IPC: H02J3/00
- IPC: H02J3/00 ; H02J3/14

Abstract:
A method for providing frequency load shedding in a power distribution network. The network includes a number of distributed switch-gear assemblies that control whether AC power is provided to groups of loads. The distributed switch-gear assemblies monitor the frequency of the AC signal to determine if a frequency event is occurring and also determine the direction of the power flow at the time of the event. The switch-gear assembly may open in an underfrequency event only if the loads are drawing power from the network, and the switch-gear assembly may open in an overfrequency event only if there is reverse power flow during the event. In addition, the order of operation of which switch-gear assemblies may open first in response to the frequency event is determined in advance by the location of the switch-gear assembly in the network and a corresponding time delay and coordinated frequency set-points.
Public/Granted literature
- US20190245347A1 COORDINATED FREQUENCY LOAD SHEDDING PROTECTION METHOD USING DISTRIBUTED ELECTRICAL PROTECTION DEVICES Public/Granted day:2019-08-08
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