WO2014091419A1 - Procédé de configuration d'application de commande dans un système de commande - Google Patents

Procédé de configuration d'application de commande dans un système de commande Download PDF

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Publication number
WO2014091419A1
WO2014091419A1 PCT/IB2013/060800 IB2013060800W WO2014091419A1 WO 2014091419 A1 WO2014091419 A1 WO 2014091419A1 IB 2013060800 W IB2013060800 W IB 2013060800W WO 2014091419 A1 WO2014091419 A1 WO 2014091419A1
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WO
WIPO (PCT)
Prior art keywords
configuration
control system
communication
control
computing devices
Prior art date
Application number
PCT/IB2013/060800
Other languages
English (en)
Inventor
Abhilash G
Marius STANICA
Pietro Danelli
Original Assignee
Abb Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Abb Technology Ltd filed Critical Abb Technology Ltd
Publication of WO2014091419A1 publication Critical patent/WO2014091419A1/fr

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25064—Update component configuration to optimize program execution
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/60—Software deployment
    • G06F8/65—Updates

Definitions

  • the invention generally relates to the field of communication networks and control systems and specifically relates to a method of configuration for control application in control systems.
  • Power plants may be built with a starting capacity say 500MW and at a later point, the capacity may be increased to say 670MW and further to 1 GW capacity to suit a growing need or to have an attractive payback.
  • the associated control system which controls the power plant also needs to be grown in conjunction with the plant.
  • the automation plan may also have its priority items/areas of plant to be included in the first increment and then in the next increment phase and so on.
  • Applications which can take advantage of this incremental strategy are called as incremental applications and these can minimize the costs of implementation and may use hardware that is already in place and thus reduce the implementation time and testing time with minimum effect on operation of the already commissioned part of the plant.
  • Ethernet architectures pose several limitations of not being able to configure the Ethernet traffic below the application layer and to use the advantages of Ethernet based communication to the full. This mechanism could not be used to reconfigure the GOOSE (Generic object oriented substation event) control block subscriptions or any multicast based mechanisms using layer 2 of Ethernet communication.
  • GOOSE Generic object oriented substation event
  • HMI Human Machine Interface
  • the configuration for setting up the communications can be done using an engineering tool but involves many manual steps that need to be performed by engineers to install involved devices after the device hardware is made available.
  • Some parameters related with communication settings could be pre-configured along with function blocks used for process engineering but this may be limited. Moreover such pre-configured concept may have dependencies i.e., they may work as long as all communication works via controllers.
  • setting up communication could involve setting the parameters such as IP Address, Logical MAC Address, Redundant Server Settings, Exception Reporting Publisher Subscriber settings or association between multiple devices to exchange information etc.
  • control system which allows I/O devices to be available on a Plant data bus, and Field Devices having connection capabilities to get connected using either wired or wireless protocols in a plant network.
  • electrical relays and other control blocks can directly be a part of the plant network along with a controller.
  • control systems need additional features for incremental configuration and to fully exploit the new architecture.
  • the invention provides a method of configuring a control application in a control system.
  • the control system comprises of multiple computing devices, each computing device having associated control logic made using one or more function blocks, and a communication stack for communication in the control system network.
  • the method comprises of:
  • the mange node device analyze the change in configuration based on performance of the devices to satisfy the requirements of the control application based on timing and criticality of control functions.
  • the analysis of change in configuration of control logic includes collecting information about connected computing devices on the control system network. Also, the analysis can be carried out by calculating turn-around time on the communication network based on the physical location of the computing devices on the control system network.
  • the configuration of the control system network includes reconfiguring IP Address of one or more devices from the plurality of devices, or Identifying the Virtual LAN for arranging the devices in virtual rings, or registering to notifications like events and alarms.
  • the configuring of the control system network includes reconfiguring of communication stack associated with the plurality of computing devices.
  • Figure 1 Figure showing an exemplary method of the invention
  • Figure 2 Figure showing control system specific layers of communication stack running at two instances, one operating on layer 3 on TCP/IP layers and the other operating on Layer 2 which is able to accept data directly from Ethernet NIC cards;
  • Figure 3 Figure showing a power plant model with incremented capacity
  • Figure 4 Figure showing a tripped Generator in the plant leading to load shedding by the control system for stability
  • FIG. 5 Figure the showing the sequence of steps of the proposed method.
  • the invention discloses a method for configuring control application in a control system.
  • the communication configuration assumes the following:
  • Existence of Ethernet based bus means communication need not always pass through controllers, all devices could participate in a two way communication directly.
  • d. Access Points and Configuration of Association between multiple access points is done as part of Message Exchange
  • the user is authenticated into the system and has rights to perform the control logic configuration and communication configuration changes.
  • the Devices Control, I/O and HMI with computing capabilities
  • control logics are built by the user by using standard device/control Libraries.
  • the libraries includes the device type, function block type and communication block information.
  • the computing devices need to support Ethernet or wireless communication or any other protocol that supports publisher subscriber mode and request response modes of information exchange.
  • Figure 1 illustrates an exemplary embodiment for the method of configuration for control application in a control system.
  • the method involves configuration activity initiated from an Engineering Station (1 10) connected in a communication network that connect to numerous devices in a control system.
  • the engineering station is used to perform engineering and configuring tasks, and also for distribution of engineered function blocks comprising a control logic to the device in a control system that is configured or engineered.
  • a control system is said to be consisting of several nodes and each node in a network (control system network) comes with a computing device.
  • several computing devices (130, 150, 1 70 in Figure 1 ).
  • Each devices are computing devices in the communication network (control system network) having processing capabilities and resources.
  • Each device also consists of communication stack comprising of physical interfaces (135) which could be network interface cards, layers 2 (137) and layer 3 (140) representing MAC/Data Link Layer and Application Protocol layers respectively.
  • the nodes have communication stacks comprising of layer 2 and layer 3 and control system specific layers for control system communication, applications (145) , data storage/database (147) and agents (120) running on the nodes.
  • one of the computing devices at device level or station level is made to act as a Manage Node Device (150) that runs a management agent and acts as aggregator for communication of all computing device.
  • the Management Node Device can be a computing system, for example a server.
  • the flow of data and events across the computing devices are bidirectional.
  • the configuration of application in the control system using the method of invention (200) is carried out using the following steps (refer Figure 2):
  • Step1 When an engineer using the engineering station (1 10) creates a control logic or makes any change to function blocks that constitute the control logic, and downloads the function block network to the associated computing device ( say controller device 1 , 130) in the control system network, it also sets a variable (object property of SNMP or a GOOSE dataset) called latest update timestamp.
  • a variable object property of SNMP or a GOOSE dataset
  • the agent (120) in the computing Device (130) detects a change in the timestamp value and thereby detects that a change has occurred in the control logic.
  • Step2 The agent (120) in device 130 now sends a notification on communication subsystem which has a computing device identified as Manage Node device (1 50), the Management Node Device can be a computing system(for example a server).
  • the Manage Node Device receives this notification over the communication network as an event message (a multicast or asynchronous message).
  • An example is a SNMP trap message or a GOOSE multicast message notifying a change in system configuration.
  • GOOSE Message in such a case comes with a Dataset containing the 'NotifyOnConfigChange' configured from GOOSE Control Block and going to all the subscribers configured for the block.
  • the impact of the change can be analyzed by analyzing the configuration data prior to making the update. The analysis is done by analyzing the function blocks and based on CPU/resources of the computing devices, it checks if there is a need to distribute/redistribute any function blocks or functions across a wider system network. On identifying the need for such distribution, the Manage Node Device then analyzes the entire network of resources for an optimal distribution.
  • the Manage Node Device performs the analysis based on the following changes:
  • the reorganized function network could mean
  • Time Synchronization Blocks are placed in a different device
  • the system starts by defining a configuration based on existing configuration and adding the communication elements towards the end of each device end point and analyzes the performance to satisfy the requirements of the application with respect to timing and criticality.
  • a. System detects the start time and from the input to the output of Time Synchronization roundtrip, the system analyses the execution sequence and checks for the time that it takes for the execution.
  • the Manage Node Device collects this information from the Computing devices and performs a detailed analysis as mentioned in Step 3, for having an optimal configuration of communication network.
  • the configuration of communication could include modifying the IP Addresses, or Identifying the VLAN's (VLAN IDs) for organizing the devices in virtual rings, or re-register to notifications like events and alarms. This distribution of function blocks according to logical changes leads to an optimal communication path.
  • SNMP object or GOOSE dataset the network object
  • a variable ⁇ netreconf> gets set on the private sections of SNMP structure or GOOSE dataset to reset the stacks.
  • the method includes using a shared memory to hold data which is passed to Control System Specific Communication Stack.
  • the Control System Specific Communication layers can be run at two instances.
  • the following process shows reconfiguration of the stack on the computing devices.
  • the agent in devices in turn initiates an application which performs the stack reconfiguration.
  • the application initializes the Layer 2 (320), lower layer based communication component which will continue to support event and data flow when the layer 3 (330) based communication stack is restarted. Once the layer 2 component is ready using a flag the initialization completed status is indicated to the application. iii) The application now initiates a shutdown call on the layer 3 (330) or application layer communication using the commands. iv) In order to perform reconfiguration with minimal downtime MMRP (Multiple
  • MAC Registration Protocol MAC Registration Protocol
  • GMRP GARP Multicast Registration Protocol
  • This method leads to an intelligent configuration of the Control system network.
  • the method eliminates the concept of Communication Function Blocks and lets Communication Stand independent but automatically taken care based on impact of control network changes. This method provides a mechanism to ensure availability of the Control system function with zero loss of data and events while the configuration takes place.
  • FIG. 4 shows a power plant substation as an example.
  • the power plant 400 comprising of generators for power production and motors as load with circuit breakers to control feeding of power from generators, is started with 500 MW capacity and then additional capacities are added to the plant increasing the capacity to 670MW by adding generators 410.
  • the automation system deployment needs to be optimally planned to minimize new cost implications or squeeze functions.
  • an upgrade strategy can be to have more PCU added and have the existing HMI extended to include visualization of events and alarms.
  • the upgrade strategy would mean new field equipment (410, 420) which when added has to be operated for control and protection functions by the deployed automation system. Adding capacities also mean new auxiliaries appearing in the control system and giving rise to new monitoring and protection scenarios. Moreover there is energy efficiency logic which has to be extended to comprise inputs from newly added PCUs of the automation system.
  • the upgrade will result in a new feeder comprising of a generator, Circuit breakers getting added as primary equipment and also new Relays or Intelligent Electronic Devices (IED) or Controllers getting added as secondary equipment.
  • IED Intelligent Electronic Devices
  • One of the essential control functions in a substation of a power plant is to handle the load. It is done by managing (reducing or shedding) the load on the system depending upon the available generation. In a power plant when a generator trips, based on its capacity, a certain load is shed by isolating a part of the system by the control system available on the plant, thereby avoiding system failure.
  • the load shedding or power balance management is controlled by a power management controller in the electrical network system.
  • the power management controller may be an independent controller device or a process controller in a power plant that is managing processes of the power plant.
  • the configuration for control application in control system of the power plant using the method of the invention can be done in the following manner:
  • the moment control logic is configured for load shedding in the upgraded substation, the controller has a change in the control logic.
  • control logic In an electrical integration case like load shedding there involves Distributed Control System as well as Electrical systems/auxiliaries. New capacity in power plant means new feeders getting added.
  • the system wide logic changes include
  • a new feeder which comprises of Generators, Circuit Breakers, lEDs and Controllers.
  • the device level logic changes include protection function change, or supervision function change or changing the parameters of the functions.
  • a protection function we need to set the HMI related functions to be modified, the Sequence of Events (SOE) Slave, functions governing the motor.
  • Function blocks examples includes Time Synch Blocks, Function Blocks related to I/O, Pulse Input/Period (PIPER) function Blocks, Analog Input Slave (AIS/FBS - Field Bus Slave), HMI Related Function Blocks, Analog Exception Report Function Blocks (AO/L), Sequence of Events Slave, Basic Function Blocks could include the AND Blocks, Remote Control Memory Blocks, Function Blocks related to Decision Making and Execution, Multi State Device Driver, and PID Error which is capable of providing proportional, integral and derivative actions on error signal from process variables and set point inputs.
  • the controller (device) which is affected by the change will update the latest update timestamp variable.
  • the agent service running in the computing device identifies a change in timestamp variable and it identifies the need for communication change.
  • the list of communication changes at system level includes publishing and subscription of GOOSE Control Block and the signals to be included in the dataset.
  • the time synchronization source to be added the flow of all the time synch information across the network devices will have to be configured including the path including parameters of IP Addresses or MAC addresses, adding HMI means for reporting or exception reports to update HMI, the path needs to be added and events and data reach the new HMI. For device level changes, this could be triggering system level changes as well. Also supervision function changes like signals would translate to the reporting data and exception reports and their path of IP Address or MAC address. More signals to be connected to Sequence of Events would mean the resultant events and their paths need to be defined in the control system network.
  • the agent service running in the affected computing device then sends a notification on communication sub system which has one of the computing devices or operations/HMI devices identified as Manage Node Device.
  • This notification is sent using multicast or broadcast approaches.
  • the management agent on the Manage Node Device runs analysis to identify the impact of the change.
  • the Impact of the change is analyzed by comparing the previous configuration with the new configuration with respect to control logic and checks if there are additions of control logic and functions which would need communication changes.
  • the Manage Node Device analyses the change in the control block functions for the fast load shedding and performs a detailed analysis for distribution/redistribution of the function blocks.
  • the Manage Node Device collects the information from the rest of the computing devices in the network and performs a detailed analysis for having and optimal configuration of the network. Aligned with the distribution an optimal communication configuration is prepared which involves modifying IP Addresses, subscriptions added for computing devices. This would include configuring the existing computing devices and newly added computing devices in the plant.
  • the Management Node Device initiates the reconfiguration by assigning the Change Parameters List as a dataset or set of parameters for each computing device and triggers the changes to be deployed on the automation control system network devices which are affected. Further to the ChangeParameters List, a variable called ⁇ netreconf> is set on every computing device which triggers the update of the parameters.
  • Control System Specific Communication layers will be running at two instances by making use of two different layer. They would get data from the shared memory and this allows redirection.
  • An example is 2 instances of IEC 61850 stack running, first one running over Layer 3, and another directly working from Layer 2. Layer 2 being below Layer 3, there is all possibility to handle data without missing any data or events. Thus the reconfigurations may be carried out efficiently.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention porte sur un procédé de configuration d'une application de commande dans un système de commande. Le procédé comprend les étapes consistant à identifier un dispositif informatique parmi une pluralité de dispositifs informatiques en tant que dispositif de nœud de gestion et à le configurer pour une analyse de configuration ; à amener une configuration d'une logique de commande pour un dispositif informatique à être envoyée au dispositif informatique ; à amener le dispositif informatique à détecter un changement dans la configuration de la logique de commande ; à amener le dispositif informatique à envoyer une notification sur le réseau de système de commande au dispositif de nœud de gestion lors de la détection d'un changement dans la configuration de la logique de commande ; à amener le dispositif de nœud de gestion à analyser le changement dans la configuration de la logique de commande pour une distribution optimisée de blocs de fonction et une configuration de communication optimisée relativement à un ou plusieurs dispositifs informatiques connectés dans le réseau de système de commande ; et à amener le ou les dispositifs informatiques à être configurés pour une distribution optimisée des blocs de fonction et une configuration de communication optimisée sur la base de l'analyse effectuée par le dispositif de nœud de gestion. Le procédé est utilisé pour configurer un système de commande dans une centrale électrique.
PCT/IB2013/060800 2012-12-13 2013-12-11 Procédé de configuration d'application de commande dans un système de commande WO2014091419A1 (fr)

Applications Claiming Priority (2)

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IN5213/CHE/2012 2012-12-13
IN5213CH2012 2012-12-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105223431A (zh) * 2015-04-16 2016-01-06 深圳供电局有限公司 一种状态监测综合处理装置和状态监测系统
CN109359840A (zh) * 2018-09-30 2019-02-19 南京南瑞继保电气有限公司 一种切负荷量分配方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2189900A1 (fr) * 2008-11-25 2010-05-26 Fisher-Rosemount Systems, Inc. Intégration de gestionnaire de déploiement logiciel dans un système de contrôle de processus
US20100298962A1 (en) * 2009-05-25 2010-11-25 Canon Kabushiki Kaisha Information processing apparatus, manufacturing apparatus, and device manufacturing method
WO2012013219A1 (fr) * 2010-07-27 2012-02-02 Siemens Aktiengesellschaft Configuration des liaisons de communication des appareils de terrain d'un équipement d'automatisation de la distribution d'énergie
US20120239170A1 (en) * 2009-08-14 2012-09-20 Abb Technology Ltd Method and system for engineering a substation automation system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2189900A1 (fr) * 2008-11-25 2010-05-26 Fisher-Rosemount Systems, Inc. Intégration de gestionnaire de déploiement logiciel dans un système de contrôle de processus
US20100298962A1 (en) * 2009-05-25 2010-11-25 Canon Kabushiki Kaisha Information processing apparatus, manufacturing apparatus, and device manufacturing method
US20120239170A1 (en) * 2009-08-14 2012-09-20 Abb Technology Ltd Method and system for engineering a substation automation system
WO2012013219A1 (fr) * 2010-07-27 2012-02-02 Siemens Aktiengesellschaft Configuration des liaisons de communication des appareils de terrain d'un équipement d'automatisation de la distribution d'énergie

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105223431A (zh) * 2015-04-16 2016-01-06 深圳供电局有限公司 一种状态监测综合处理装置和状态监测系统
CN109359840A (zh) * 2018-09-30 2019-02-19 南京南瑞继保电气有限公司 一种切负荷量分配方法及装置
WO2020062715A1 (fr) * 2018-09-30 2020-04-02 南京南瑞继保电气有限公司 Procédé et appareil d'attribution de quantité de délestage de charge
CN109359840B (zh) * 2018-09-30 2021-06-18 南京南瑞继保电气有限公司 一种切负荷量分配方法及装置

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