# US 2014/0191591 A1 · Preventing Out-of-Synchronism Reclosing Between Power Systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191591 A1 - Document ID: US20140191591A1 - Status: Published application - Kind: A1 - Application number: 13/734,041 - Filed: 2013-01-04 - Published: 2014-07-10 - Earliest claimed: 2013-01-04 - Assignees: Schweitzer Engineering Laboratories, Inc. - Inventors: Bogdan Z Kasztenny; Dale S Finney - Web page: https://patentgrep.com/patent/US20140191591A1 ## CPC - H01H 47/00: Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current - H02J 3/40: Synchronisation of generators for connection to a network or to another generator - H02J 3/42: with automatic parallel connection when synchronisation is achieved - H02J 3/44: with means for ensuring correct phase sequence - H01H 2071/006: {Provisions for user interfaces for electrical protection devices} - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract The present disclosure provides apparatus, systems, and methods for preventing out-of-synchronism closing between power systems. An intelligent electronic device (IED) apparatus may include a control component and a delay component. The control component is configured to selectively control opening and closing of a breaker. The control component selectively outputs a close signal to cause the breaker to connect a first portion of a power delivery system to another portion of the power delivery system. The delay component is configured to delay output of the close signal to the breaker. The delay component includes circuitry independent from control by the control component and the delay component is inconfigurable from a remote location. ## Claims ### Claim 1 An intelligent electronic device (IED), comprising: a control component configured to selectively control opening and closing of a breaker, wherein the control component selectively outputs a close signal to cause the breaker to connect a first portion of a power delivery system to another portion of the power delivery system; and a delay component configured to delay output of the close signal to the breaker, wherein the delay component comprises circuitry independent from control by the control component and wherein the delay component is inconfigurable from a remote location. ### Claim 2 (depends on 1) The IED of claim 1, wherein the delay component comprises a hardware configuration component and wherein the delay component is configurable on-site using the hardware configuration component. ### Claim 3 (depends on 2) The IED of claim 2, wherein the hardware component comprises a switch. ### Claim 4 (depends on 2) The IED of claim 2, wherein the hardware component comprises a jumper terminal. ### Claim 5 (depends on 2) The IED of claim 2, wherein the delay component is configurable to a no-delay state wherein output of the close signal is not delayed. ### Claim 6 (depends on 2) The IED of claim 2, wherein output of the close signal is delayed by a delay time, wherein the delay time is configurable by the hardware component. ### Claim 7 (depends on 2) The IED of claim 2, wherein the control component issues an alarm upon detecting a change in configuration of the hardware configuration component. ### Claim 8 (depends on 1) The IED of claim 1, wherein the delay component comprises an analog timer circuit. ### Claim 9 (depends on 1) The IED of claim 1, wherein the delay component comprises a time delay on pick up (TDPU) delay. ### Claim 10 (depends on 1) The IED of claim 1, wherein the delay component comprises a counter component that allows a fixed number of reclose attempts before delaying output of the close signal. ### Claim 11 (depends on 1) The IED of claim 1, further comprising an isolation component to detect isolation of the first portion of the power delivery system from the second portion of the power delivery system. ### Claim 12 (depends on 11) The IED of claim 11, wherein the isolation component detects opening of the breaker. ### Claim 13 (depends on 11) The IED of claim 11, wherein the first portion of the power delivery system comprises a portion of a power delivery grid isolatable by opening of the breaker and one or more additional breakers and wherein the isolation component detects opening of the breaker and the one or more additional breakers. ### Claim 14 (depends on 1) The IED of claim 1, wherein the delay component is configured to delay the output of the close signal by a delay time. ### Claim 15 (depends on 14) The IED of claim 14, wherein the delay time is measured from a time of isolation of the first portion of the power delivery system from the second portion of the power delivery system. ### Claim 16 (depends on 1) The IED of claim 1, wherein the control component is configured to communicate over a communication link with a remote device. ### Claim 17 A control system for controlling connection of a first portion of a power delivery system to a second portion of the power delivery system, the control system comprising: a breaker; and a microprocessor based relay comprising: a control component configured to selectively control opening and closing of a breaker, wherein the control component selectively outputs a close signal to the breaker to connect the first portion of the power delivery system to the second portion of the power delivery system; and a delay component configured to delay output of the close signal to the breaker, wherein the delay component comprises circuitry independent from control by the control component and wherein the delay component is inconfigurable from a remote location. ### Claim 18 (depends on 17) The control system of claim 17, further comprising a synchronization component. ### Claim 19 (depends on 17) The control system of claim 17, wherein the synchronization component is internal to the IED. ### Claim 20 (depends on 17) The control system of claim 17, wherein the synchronization component is external to the IED. ### Claim 21 (depends on 17) The control system of claim 17, wherein first and second portions of the power delivery system comprises isolatable by the breaker and one or more additional breakers. ### Claim 22 (depends on 17) The control system of claim 17, wherein the first portion of the power delivery system comprises a rotating machine. ### Claim 23 (depends on 17) The control system of claim 17, further comprising wherein the rotating machine comprises a generator. ### Claim 24 (depends on 17) The control system of claim 17, wherein the delay component comprises a hardware configuration component and wherein the delay component is configurable on-site using the hardware configuration component. ### Claim 25 (depends on 24) The control system of claim 24, wherein the control component issues an alarm upon detecting a change in configuration of the hardware configuration component. ### Claim 26 A method for preventing out-of-synchronism closing, the method comprising: selectively controlling opening and closing of a breaker using a control component of an IED, wherein the control component selectively outputs a close signal to cause the breaker to connect a first portion of a power delivery system to another portion of the power delivery system; and delaying output of the close signal to the breaker using a delay component of the IED, wherein the delay component comprises circuitry independent from control by the control component and wherein the delay component is inconfigurable from a remote location.