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Patent

Operating a substation automation system

Hubert Kirrmann1, Michael Obrist1
27 Oct 2008-
TL;DR: In this paper, the authors present an approach for the operation of substations in which protection, control and measurement devices (IEDs) exchange operational data over a data network, for instance according to IEC standard 61850.
Abstract: The present invention is concerned with the operation of substations in which protection, control and measurement devices (Intelligent Electronic Devices IEDs) exchange operational data over a data network, for instance according to IEC standard 61850. During maintenance, commissioning and fault situations when one or several IEDs are inoperable, the data that these IEDs would have produced is substituted to ensure availability of the substation. To this effect, a dedicated substitute device is permanently installed that can take the role of any IED, and that is automatically configured out of the SCD file that describes the SA system.
Citations
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Patent
14 Feb 2012
TL;DR: In this paper, a method for engineering and configuration of one or more IEDs for a function in a substation automation system is described, which includes creating pre-defined type definitions for an application function, providing a selectable menu for selection of appropriate parameters with respect to the application.
Abstract: A method for engineering and configuration of one or more IEDs for a function in a substation automation system is disclosed. Also disclosed is a configuration wizard for implementing the method. The method includes creating pre-defined type definitions for an application function, providing a selectable menu for selection of appropriate parameters with respect to the application. Using these parameters and the pre-defined type definitions. The method includes creating process configuration outputs for the application function, and configuring the one or more IEDs based on the process configuration outputs.

21 citations

Patent
20 Dec 2010
TL;DR: In this paper, intelligent sensors of the IED type make concerning measurements in the high voltage equipment, interconnected through a communication network to a monitoring central computer, allowing user's remote access to the measurements and diagnosis of the equipment condition as well as emitting automatic alarms should any abnormality appear in it.
Abstract: Remarkably consisting of intelligent sensors of the IED type that make concerning measurements in the high voltage equipment, interconnected through a communication network to a monitoring central computer, allowing user's remote access to the measurements and diagnosis of the equipment condition as well as emitting automatic alarms should any abnormality appear in it.

15 citations

Patent
17 Jun 2015
TL;DR: In this article, the authors proposed a method for transmitting data in a transformer station, which comprises the following steps: 1)a transformer station process layer is connected to equipment, and an operation state is monitored with real time, the acquired data is loaded to a spacing layer IED; 2)the spacing layer makes analysis and determination for the received gateway node data of the spacing layer, parameter setting and control instruction are sent to the process layer, the data are loaded to the substation control layer, and the control instruction is received.
Abstract: The invention relates to a method for transmitting data in a transformer station, which comprises the following steps: 1)a transformer station process layer is connected to equipment, and an operation state is monitored with real time, the acquired data is loaded to a spacing layer IED; 2)the spacing layer IED makes analysis and determination for the received gateway node data of the spacing layer, parameter setting and control instruction are sent to the process layer, the data is loaded to the substation control layer, and the control instruction is received; and 3)the substation control layer receives the date of a communication unit of the spacing layer and sends to a network dispatching main station, and the control command from the main station can be distributed to the communication unit of the spacing layer. The method provides a wireless mode thinking for standardization communication of an intelligent transformer station state monitoring system. By comparing to other short distance wireless modes, more nodes can be accessed. The IED mutual operation can be realized, and the method has important effect for standardization development of the monitoring system of the transformer station equipment.

13 citations

Patent
29 Oct 2014
TL;DR: In this paper, a method for realizing data message transmission in a transformer substation through a passive optical network is proposed, which distributes exclusive transmission channels for different types of messages by means of the time division multiplexing multiple access characteristic of the passive optical networks.
Abstract: The invention discloses a method for realizing data message transmission in a transformer substation through a passive optical network. The method for realizing the data message transmission in the transformer substation through the passive optical network distributes exclusive transmission channels for different types of messages by means of the time division multiplexing multiple-access characteristic of the passive optical network so as to realize the pre-distribution for communication resources and effectively isolate the transmission of different types of business, the mutual influences between the business due to the communication resource competition are avoided, the real-time performance of the business with a high priority is guaranteed under a full load or overload situation of the system, and the business service quality requirement is better satisfied.

10 citations

Patent
26 Jun 2008
TL;DR: In this article, the authors present an intelligent electronic device as well as a method for activating a function in an intelligent device, which includes an inter-module bus (26), a first interface (30), and a number of hardware modules (18, 20, 22, 24, 24) connected to each other via the intermodule bus.
Abstract: The invention concerns an intelligent electronic device as well as a method for activating a function in an intelligent electronic device. The device (12) includes an inter-module bus (26), a first interface (30) and a number of hardware modules (18, 20, 22, 24) connected to each other via the inter-module bus (26). The modules include a process control module (18) including a control unit that senses the types (T1, T2, T3, T4) of hardware modules connected to the inter-module bus, that obtains set-up data from an external portable data carrier, where the set-up data includes configuration data and verification data, where the verification data includes hardware type data related to the modules in the device, that compares the obtained verification data with own verification data including data regarding the sensed hardware type, and that activates a protection function only if there is a match between all verification data being compared.

8 citations

References
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Patent
16 Jun 2006
TL;DR: In this article, a system for modifying the functionality of intelligent electronic devices installed and operating in the field is disclosed, each of the devices operates with a software configuration to monitor electrical energy.
Abstract: A system for modifying the functionality of intelligent electronic devices installed and operating in the field is disclosed Each of the intelligent electronic devices operates with a software configuration to monitor electrical energy A copy of the software configurations may be maintained in a database Changes to the operation of one or more of the intelligent electronic devices may be made as a function of modifications to the database

279 citations

Patent
21 May 2001
TL;DR: In this article, a test system provides conventional analog outputs that allow application of power system conditions simulation to a device under test, which has a communication interface which sends and receives digital communication to and from protection relays, control devices, and meters, known as IEDs.
Abstract: The test system provides conventional analog outputs that allowing application of power system conditions simulation to a device under test The test device has a communication interface which sends and receives digital communication to and from protection relays, control devices, and meters, known as intelligent electronic devices (IEDs) The test device interacts with the devices under test over a direct communication link or a substation local area network The communication protocol includes digital communication to send and receive messages which simulate virtual switching and control equipment status and other intelligent electronic device (IED) data and status The test system monitors the operation of the IED device under test based on the IED digital communication data received and the contained control signal status utilizing the digital communication interface as a substitute for the conventional hard-wiring of IED binary inputs and outputs

84 citations

Patent
30 Mar 2007
TL;DR: In this paper, the mean time to repair is reduced by remote reconfiguration and start-up of a replacement or spare Intelligent Electronic Device (IED), leaving some more hours for the maintenance personnel to repair an inactive or faulty IED.
Abstract: In automation systems, such as Substation Automation systems, the mean time to repair is reduced by remote reconfiguration and start-up of a replacement or spare Intelligent Electronic Device (IED), leaving some more hours for the maintenance personnel to repair an inactive or faulty IED. The time for the actual repair is irrelevant for the system availability as long as it is short enough compared to the IED failure rate. Exemplary embodiments can provide nearly the same availability as a hot-standby configuration, but without the need for doubling all the essential IEDs. Additionally, spare IEDs are supervised to be healthy, and a fault of the spare IED being detected before it is put in use. Only one spare online IED is needed for each set of IEDs of the same type connected to the same station bus and process bus. In a retrofit or extension case with limited downtime, a number of previous IEDs can be replaced by an equivalent set of new or real IEDs of a different type, but configured to perform the same functions as the previous IEDs.

47 citations

Patent
03 Apr 1997
TL;DR: In this article, an intelligent electronic device (IED) having two modes of operation, i.e., normal and simulation, provides simulated IED data to a SCADA device on command.
Abstract: Method and apparatus for performing point to point verification of devices in a SCADA system are provided. An intelligent electronic device (IED), having two modes of operation--normal and simulation--provides simulated IED data to a SCADA device on command. The IED is capable of continuing to perform its normal functions of monitoring a process under control during the simulation mode. The IED accepts simulation data either locally through a user interface or from a SCADA device over/through a communication port. The simulation data is then stored in a memory area of the IED. During simulation mode, the IED does not update the memory area but rather provides data from this area to a SCADA device on command.

46 citations

Patent
13 Nov 1986
TL;DR: In this paper, a method for error-protected switching operation of switching devices of a high-voltage switching station is presented, which decouples the topological configuration of the highvoltage switch station from the error protected switching interlocking rules.
Abstract: A method for error-protected switching operation of switching devices of a high-voltage switching station. The current operational state of the station is determined from the signals provided by position indicating contacts (KI, KII, KIII) of the switching devices. Using the obtained operational state, switching operation request commands (for example KA) are checked for release or blocking status by means of error-protected switching interlocking rules. In the case of changes in the topological configuration of the high-voltage switching station and/or in the case of changes of the error-protected switching interlocking rules, it is possible to adapt the basic method to these changes in a simple manner and without losing operational reliabilty. This is achieved by decoupling the topological configuration of the high-voltage switching station from the error-protected switching interlocking rules. To this end, the topological configuration of the high-voltage switching station and the error-protected switching interlocking rules are stored independently of each other. From current position indicating signals of the switching devices and the topological configuration, topological elements establishing the current operational state of the high-voltage switching station are formed by means of which the error-protected switching interlocking rules are interrogated for releasing or blocking a switching operation request commands (KE).

35 citations