-
公开(公告)号：US20210159700A1
公开(公告)日：2021-05-27
申请号：US16695978
申请日：2019-11-26
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Abdel Rahman Khatib , Niannian Cai
Abstract: Systems and methods described herein may be used to search for a minimum load overshed in a power system. For example, a control system includes memory and a processor operatively coupled to the memory. The processor may obtain an amount of power consumed by each load in a total set of loads in a microgrid. The processor may detect a difference between the amount of power generated and the amount of power consumed. The processor may select a subset of loads to shed from the total set of loads by searching a tree of potential load shed amounts to substantially balance the amount of power generated with the amount of power consumed. The processor may send one or more signals to one or more electronic devices to cause the selected subset of loads to be shed.
-
公开(公告)号：US11368048B2
公开(公告)日：2022-06-21
申请号：US16938176
申请日：2020-07-24
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Abdel Rahman Khatib , Niannian Cai
Abstract: A microgrid power flow monitoring and control system is described herein. The control system may determine active and reactive power sharing shortage on the electric power delivery system. The control system may utilize the control strategies of generation units, such as ISO control, droop control and constant power control to estimate power flow within a microgrid or other isolated system. A control strategy of one or more generators may be modified based on the determined power flow.
-
公开(公告)号：US11177657B1
公开(公告)日：2021-11-16
申请号：US17032404
申请日：2020-09-25
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Abdel Rahman Khatib , Niannian Cai
Abstract: A power system simulator may calculate mechanical power of at least one generator at a second time in a simulated power system based at least in part on electrical power of the at least one generator at a first time. The power system simulator may calculate system frequency at second time based on system dynamic model that models the electrical power and the mechanical power of the simulated power system, frequency and voltage characteristics in the simulated power system, and inertia of the at least one generator. The power system simulator may provide simulated power system measurements based on the active power values to a power system controller to allow testing of the power system controller.
-
公开(公告)号：US20220271530A1
公开(公告)日：2022-08-25
申请号：US17739634
申请日：2022-05-09
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Abdel Rahman Khatib , Niannian Cai
Abstract: A microgrid power flow monitoring and control system is described herein. The control system may determine active and reactive power sharing shortage on the electric power delivery system. The control system may utilize the control strategies of generation units, such as ISO control, droop control and constant power control to estimate power flow within a microgrid or other isolated system. A control strategy of one or more generators may be modified based on the determined power flow.
-
公开(公告)号：US10931109B2
公开(公告)日：2021-02-23
申请号：US16245062
申请日：2019-01-10
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Niannian Cai , Abdel Rahman Khatib , Niraj Kiritkumar Shah
IPC: G05B19/042 , H02J3/14
Abstract: The present disclosure relates to a computationally efficient technique for determining loads to shed based on both active and reactive power. For example, a monitoring and control system may receive electrical measurements of a power system. The monitoring and control system may determine an active power and a reactive power of each bus in the power system based on the received electrical measurements. The monitoring and control system may send a command to trip at least one breaker to cause the at least one breaker to shed a load based at least in part on both the active power and the reactive power consumed by each bus in the power system.
-
Patent Agency Ranking
公开(公告)号：US10763695B2
公开(公告)日：2020-09-01
申请号：US15644323
申请日：2017-07-07
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Abdel Rahman Khatib , Niannian Cai
Abstract: A microgrid power flow monitoring and control system is described herein. The control system may determine active and reactive power sharing shortage on the electric power delivery system. The control system may utilize the control strategies of generation units, such as ISO control, droop control and constant power control to estimate power flow within a microgrid or other isolated system. A control strategy of one or more generators may be modified based on the determined power flow.
-
公开(公告)号：US11735913B2
公开(公告)日：2023-08-22
申请号：US17329436
申请日：2021-05-25
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Niannian Cai , Abdel Rahman Khatib
CPC classification number: H02J3/0012 , G05B17/02 , H02J3/144 , H02J13/00002 , H02J2203/20
Abstract: An autonomous real-time remedial action scheme (RAS) control system may receive electrical measurements of a power system. The RAS control system may determine active power and reactive power of each bus in the power system based on the received electrical measurements. The RAS control system may dynamically determine whether to shed one or more loads, generators, or both in the power system by optimizing an objective function to maintain maximum critical load and maximum critical generation in the electrical system based on the active and reactive power of each bus in the power system and the generation of each generator in the power system. The RAS control system may send a command to trip at least one breaker to cause the at least one breaker to shed the one or more loads, generators, or both. The RAS control system may send a command to runback one or more generators.
-
公开(公告)号：US11038352B1
公开(公告)日：2021-06-15
申请号：US16695978
申请日：2019-11-26
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Abdel Rahman Khatib , Niannian Cai
Abstract: Systems and methods described herein may be used to search for a minimum load overshed in a power system. For example, a control system includes memory and a processor operatively coupled to the memory. The processor may obtain an amount of power consumed by each load in a total set of loads in a microgrid. The processor may detect a difference between the amount of power generated and the amount of power consumed. The processor may select a subset of loads to shed from the total set of loads by searching a tree of potential load shed amounts to substantially balance the amount of power generated with the amount of power consumed. The processor may send one or more signals to one or more electronic devices to cause the selected subset of loads to be shed.
-
公开(公告)号：US20200227915A1
公开(公告)日：2020-07-16
申请号：US16245062
申请日：2019-01-10
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Niannian Cai , Abdel Rahman Khatib , Niraj Kiritkumar Shah
IPC: H02J3/14 , H02J13/00 , G05B19/042
Abstract: The present disclosure relates to a computationally efficient technique for determining loads to shed based on both active and reactive power. For example, a monitoring and control system may receive electrical measurements of a power system. The monitoring and control system may determine an active power and a reactive power of each bus in the power system based on the received electrical measurements. The monitoring and control system may send a command to trip at least one breaker to cause the at least one breaker to shed a load based at least in part on both the active power and the reactive power consumed by each bus in the power system.
-
公开(公告)号：US20200026337A1
公开(公告)日：2020-01-23
申请号：US16284882
申请日：2019-02-25
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Abdel Rahman Khatib , Niannian Cai
Abstract: The present disclosure relates to systems and methods of predicting voltages for various contingencies. For example, a monitoring system may include a processor that acquires at least one contingency of an electric power delivery system. The processor may acquire an expected control action based on the at least one contingency from controllers/IEDs. The processor may predict a voltage of at least one bus of the electric power delivery system by simulating the change in the state of the electric power delivery system caused by the expected control action. The processor may determine that the voltage of the at least one bus is predicted to violate one or more operational settings of the electric power delivery system if the at least one contingency were to occur. The processor may provide an indication that the voltage violates the one or more operational settings on a display of the electronic device.
-
-
-
-
-
-
-
-
-
Search Results
15
records
(took 0.017 seconds)
