CN114498930B - Intelligent substation safety measure automatic generation method based on model file - Google Patents
Intelligent substation safety measure automatic generation method based on model file Download PDFInfo
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- CN114498930B CN114498930B CN202210076264.XA CN202210076264A CN114498930B CN 114498930 B CN114498930 B CN 114498930B CN 202210076264 A CN202210076264 A CN 202210076264A CN 114498930 B CN114498930 B CN 114498930B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00004—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the power network being locally controlled
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/04—Power grid distribution networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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Abstract
The invention belongs to the technical field of secondary operation detection of intelligent substations, and discloses an intelligent substation safety measure automatic generation method based on a model file. A primary state model is built according to the switching state of the switch knife switch, and a secondary equipment model is built according to the switching state of the secondary pressing plate; establishing a task state association model according to the voltage level and the interval type; the SCD file is imported, and security measures are instantiated. A large number of manual operations are avoided, the configuration period is shortened, and the working efficiency is improved.
Description
Technical Field
The invention is suitable for the technical field of secondary operation detection of intelligent substations, and particularly relates to an intelligent substation safety measure automatic generation method based on a model file.
Background
The secondary system of the intelligent station is networked and highly integrated, so that the isolation theory of obvious electric break points in the conventional station cannot be continued in the intelligent station. The intelligent station isolation measures have the characteristics of concealment, non-visual performance and the like, and the problems of ' missing items ', wrong items ' and the like are easy to occur in the implementation.
Usually, intelligent substation safety measure compiling and auditing are completed completely by manpower, so that the compiling and auditing time is long, the accuracy is low, and a large potential safety hazard is left for safe and stable operation of a power grid.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a patrol method of an intelligent substation relay protection device.
In order to solve the technical problems, the invention adopts the following technical scheme:
an intelligent substation security measure automatic generation method based on a model file comprises the following steps:
step 1, a primary state model is established according to the opening and closing state of a switch knife;
step 2, a secondary state model is established according to the split and close state of the secondary pressing plate;
step 3, establishing a task state association model according to the voltage level and the interval type;
and 4, analyzing the SCD file, extracting interval information and associated secondary equipment information, and automatically generating a safety measure.
The primary state model of step 1 as described above includes an interval model;
the interval model comprises a primary device state model, and the primary device state model comprises a primary device state logical group model;
the primary device state logic group model establishment method comprises the following steps:
a primary equipment information model is formed by primary equipment names and primary equipment states;
a nested primary equipment state logic group model is formed by primary equipment information models with different AND, OR and XOR logic types;
the primary device information model and the nested primary device state logic group model form primary device state logic groups with different AND, OR and XOR logic types.
The secondary state model of step 2 as described above includes a secondary device model;
the secondary device model comprises a secondary device state model, and the secondary device state model comprises a secondary device state logical group model;
the method for establishing the secondary equipment state logic group model comprises the following steps:
a pressing plate model is formed by the name and the state of a pressing plate;
nesting a secondary equipment state logic group model by using a pressing plate model group with different AND, OR and XOR logic types;
the pressing plate model and the nested secondary equipment state logic group model form secondary equipment state logic group models with different AND, OR and XOR logic types.
The task state association model of step 3 as described above includes an interval task state model;
the method for establishing the interval task state model comprises the following steps:
the secondary equipment task state model is composed of equipment type, secondary equipment state and suite;
the task operation models of different task names and primary equipment states are formed by the secondary equipment task state models;
the task operation models form interval task state models with different voltage classes, wiring modes and interval types.
The security measure generation method of step 4 as described above includes the steps of:
step S1, extracting interval information according to an SCD file;
step S2, traversing the interval of the SCD file, obtaining a corresponding interval task state model according to the voltage grade, the wiring mode and the interval type, and obtaining the voltage grade, the wiring mode, the interval type parameter, the task operation model and the secondary equipment task state model of the interval task state model;
step S3, generating task operation items of the security measures according to the task names of the task operation models obtained in the step S2;
step S4, according to the primary equipment state of the task operation model obtained in the step S2, combining the voltage level, the wiring mode and the interval type to obtain a corresponding primary equipment state model, and obtaining a primary equipment state logic group model; according to the primary equipment name of the primary equipment information model, searching for a switch and a disconnecting link primary equipment in a corresponding interval, and generating state items of the primary equipment switch and the disconnecting link; creating a nested secondary device state logical group from state entries of the primary device switch and the knife switch; generating a primary equipment state logic group by using state items of a primary equipment switch, a disconnecting link and a nested secondary equipment state logic group, and then generating a primary equipment state item;
step S5, searching a corresponding interval association IED according to the equipment type and the set of the secondary equipment task state model obtained in the step S2; according to the equipment type and the set of the secondary equipment task state model, the secondary equipment state is combined with the voltage level, the wiring mode and the interval type to obtain a corresponding secondary equipment state model, and a secondary equipment state logic group model is obtained; searching a pressing plate contained in the corresponding interval correlation IED according to the pressing plate name of the pressing plate model, generating a state entry of the pressing plate, and generating a nested secondary equipment state logic group by the state entry of the pressing plate; a secondary device state logical group is generated from the state entries of the platen and the nested secondary device state logical group, and then a secondary device state entry is generated.
Compared with the prior art, the invention has the following beneficial effects:
1. compared with manual programming safety measures, the time is saved, and the working efficiency is improved;
2. based on the mode of the model file, the method does not depend on manual programming, prevents the problems of missing items, wrong items and the like, and reduces potential safety hazards.
Drawings
Fig. 1 is a flow chart of the present invention.
Detailed Description
The present invention will be further described in detail below in conjunction with the following examples, for the purpose of facilitating understanding and practicing the present invention by those of ordinary skill in the art, it being understood that the examples described herein are for the purpose of illustration and explanation only and are not intended to limit the invention.
As shown in fig. 1, the method for automatically generating the security measures of the intelligent substation based on the model file comprises the following steps:
step 1, a primary state model is established according to the opening and closing state of a switch knife;
step 2, a secondary state model is established according to the split and close state of the secondary pressing plate;
step 3, establishing a task state association model according to the voltage level and the interval type;
and 4, analyzing the SCD file, extracting interval information and associated secondary equipment information, and automatically generating a safety measure.
The primary device state has four states, which are defined as follows: operating, overhauling, hot standby and cold standby;
the secondary device state takes line protection as an example, and four states are defined as follows:
and (3) investment: the line protection device normally operates, and is put into a state when the GOOSE sends the soft pressing plate and the functional soft pressing plate and exits from the overhaul pressing plate;
and (3) overhauling: the state when the line protection device exits from all GOOSE sending soft pressing plates related to operation equipment and is put into an overhaul pressing plate;
setting the value: the circuit protection device exits all GOOSE sending soft pressing plates except reclosing, exits all differential protection function soft pressing plates, and is put into a state when the pressing plates are overhauled;
exiting: the line protection device is in a state of exiting all GOOSE sending soft pressing plates and functional soft pressing plates and being put into the overhaul pressing plates.
The primary state model of step 1 includes an interval model;
further, the interval model comprises a primary equipment state model, and the primary equipment state model comprises a primary equipment state logic group model;
the primary device state logic group model establishment method comprises the following steps:
a primary equipment information model is formed by primary equipment names and primary equipment states;
a nested primary equipment state logic group model is formed by primary equipment information models with different AND, OR and XOR logic types;
a primary equipment information model and a nested primary equipment state logic group model form primary equipment state logic groups with different AND, OR and XOR logic types;
illustrating: establishing primary information models of a breaker, a bus isolation knife 1, a bus isolation knife 2, a line isolation knife, a bus ground knife, a line ground knife and a switch ground knife;
for the mode of double bus wiring, when the primary equipment state is running, the bus isolating knife 1 and the bus isolating knife 2 form an exclusive or type nested primary equipment state logic group model; the circuit breaker, the line isolating blade, the bus grounding blade, the line grounding blade, the switch grounding blade and the exclusive or type nested primary equipment model form a primary equipment state logic group;
in one embodiment of the present invention, the secondary state model of step 2 includes a secondary device model;
further, the secondary equipment model comprises a secondary equipment state model, and the secondary equipment state model comprises a secondary equipment state logic group model;
the method for establishing the secondary equipment state logic group model comprises the following steps:
a pressing plate model is formed by the name and the state of a pressing plate;
nesting a secondary equipment state logic group model by using a pressing plate model group with different AND, OR and XOR logic types;
the method comprises the steps that a pressing plate model and a nested secondary equipment state logic group model form secondary equipment state logic group models with different AND, OR and XOR logic types;
illustrating: establishing a pressure plate model of a first differential protection soft pressure plate, a second differential protection soft pressure plate, a hard pressure plate for protecting maintenance state, a tripping soft pressure plate, a starting failure soft pressure plate, a locking reclosing soft pressure plate and a reclosing soft pressure plate three-phase inconsistent soft pressure plate;
for 220kV line protection, when the state of the secondary equipment is input, a first differential protection soft pressing plate of a channel and a second differential protection soft pressing plate of the channel form or a logic nested secondary equipment state logic group model; the protection maintenance state hard pressing plate, the tripping soft pressing plate, the starting failure soft pressing plate, the locking reclosing soft pressing plate, the reclosing soft pressing plate three-phase inconsistent soft pressing plate and the or logic nested secondary equipment model form a logical secondary equipment state logic group;
in one embodiment of the present invention, the task state association model of step 3 includes an interval task state model;
the method for establishing the interval task state model comprises the following steps:
the secondary equipment task state model is composed of equipment type, secondary equipment state and suite;
the task operation models of different task names and primary equipment states are formed by the secondary equipment task state models;
forming interval task state models with different voltage classes, wiring modes and interval types by the task operation models;
in one embodiment of the present invention, the security measure generating method of step 4 includes the steps of:
step S1, extracting interval information according to an SCD file, wherein the interval information comprises a voltage level, a wiring mode and an interval type; the device also comprises a switch and a disconnecting link primary device in the interval; the method also comprises the step of associating the IEDs at intervals, the device types and the sets of the IEDs and pressing plates contained in the IEDs.
Step S2, traversing the interval of the SCD file, obtaining a corresponding interval task state model according to the voltage grade, the wiring mode and the interval type, and obtaining the voltage grade, the wiring mode, the interval type parameter, the task operation model and the secondary equipment task state model of the interval task state model;
step S3, generating task operation items of the security measures according to the task names of the task operation models obtained in the step S2;
step S4, according to the primary equipment state of the task operation model obtained in the step S2, combining the voltage level, the wiring mode and the interval type to obtain a corresponding primary equipment state model, and obtaining a primary equipment state logic group model, wherein the primary equipment state logic group model comprises a primary equipment information model and a nested primary equipment state logic group model; according to the primary equipment name of the primary equipment information model, searching for a switch and a disconnecting link primary equipment in a corresponding interval, and generating state items of the primary equipment switch and the disconnecting link; creating a nested secondary device state logic set of an AND, OR or XOR logic type by the state entries of the primary device switch and the knife switch; generating a primary equipment state logic group of an AND, OR and XOR logic type by the state items of the primary equipment switch, the disconnecting link and the nested secondary equipment state logic group, and then generating a primary equipment state item;
step S5, searching a corresponding interval association IED according to the equipment type and the set of the secondary equipment task state model obtained in the step S2; obtaining a corresponding secondary equipment state model according to equipment type and set of the secondary equipment task state model, combining voltage level, wiring mode and interval type, and obtaining a secondary equipment state logic group model comprising a pressing plate model and a nested secondary equipment state logic group model; searching a pressing plate contained in the corresponding interval correlation IED according to the pressing plate name of the pressing plate model, generating a state entry of the pressing plate, and generating a nested secondary equipment state logic group of an AND, OR and XOR logic type from the state entry of the pressing plate; a secondary device state logical group is generated from the state entries of the platen and the nested secondary device state logical group, and then a secondary device state entry is generated.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (1)
1. The intelligent substation safety measure automatic generation method based on the model file is characterized by comprising the following steps of:
step 1, a primary state model is established according to the opening and closing state of a switch knife;
step 2, a secondary state model is established according to the split and close state of the secondary pressing plate;
step 3, establishing a task state association model according to the voltage level and the interval type;
step 4, analyzing the SCD file, extracting interval information and associated secondary equipment information, automatically generating security measures,
the primary state model of the step 1 comprises an interval model;
the interval model comprises a primary device state model, and the primary device state model comprises a primary device state logical group model;
the primary device state logic group model establishment method comprises the following steps:
a primary equipment information model is formed by primary equipment names and primary equipment states;
a nested primary equipment state logic group model is formed by primary equipment information models with different AND, OR and XOR logic types;
the primary device information model and the nested primary device state logic group model form primary device state logic groups with different AND, OR and XOR logic types,
the secondary state model in the step 2 comprises a secondary equipment model;
the secondary device model comprises a secondary device state model, and the secondary device state model comprises a secondary device state logical group model;
the method for establishing the secondary equipment state logic group model comprises the following steps:
a pressing plate model is formed by the name and the state of a pressing plate;
nesting a secondary equipment state logic group model by using a pressing plate model group with different AND, OR and XOR logic types;
the pressing plate model and the nested secondary equipment state logic group model form secondary equipment state logic group models with different AND, OR and XOR logic types,
the task state association model in the step 3 comprises an interval task state model;
the method for establishing the interval task state model comprises the following steps:
the secondary equipment task state model is composed of equipment type, secondary equipment state and suite;
the task operation models of different task names and primary equipment states are formed by the secondary equipment task state models;
the task operation model is composed of interval task state models with different voltage classes, wiring modes and interval types,
the safety measure generating method of the step 4 comprises the following steps:
step S1, extracting interval information according to an SCD file;
step S2, traversing the interval of the SCD file, obtaining a corresponding interval task state model according to the voltage grade, the wiring mode and the interval type, and obtaining the voltage grade, the wiring mode, the interval type parameter, the task operation model and the secondary equipment task state model of the interval task state model;
step S3, generating task operation items of the security measures according to the task names of the task operation models obtained in the step S2;
step S4, according to the primary equipment state of the task operation model obtained in the step S2, combining the voltage level, the wiring mode and the interval type to obtain a corresponding primary equipment state model, and obtaining a primary equipment state logic group model; according to the primary equipment name of the primary equipment information model, searching for a switch and a disconnecting link primary equipment in a corresponding interval, and generating state items of the primary equipment switch and the disconnecting link; creating a nested secondary device state logical group from state entries of the primary device switch and the knife switch; generating a primary equipment state logic group by using state items of a primary equipment switch, a disconnecting link and a nested secondary equipment state logic group, and then generating a primary equipment state item;
step S5, searching a corresponding interval association IED according to the equipment type and the set of the secondary equipment task state model obtained in the step S2; according to the equipment type and the set of the secondary equipment task state model, the secondary equipment state is combined with the voltage level, the wiring mode and the interval type to obtain a corresponding secondary equipment state model, and a secondary equipment state logic group model is obtained; searching a pressing plate contained in the corresponding interval correlation IED according to the pressing plate name of the pressing plate model, generating a state entry of the pressing plate, and generating a nested secondary equipment state logic group by the state entry of the pressing plate; a secondary device state logical group is generated from the state entries of the platen and the nested secondary device state logical group, and then a secondary device state entry is generated.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103729805A (en) * | 2014-01-04 | 2014-04-16 | 国家电网公司 | 500kV intelligent substation security arrangement ticket expert system |
| CN107153946A (en) * | 2017-04-28 | 2017-09-12 | 国家电网公司 | Intelligent station is secondary to pacify automatic generation method and the system of arranging |
| CN110955810A (en) * | 2019-11-29 | 2020-04-03 | 国网福建省电力有限公司 | Intelligent substation secondary safety measure graphical representation method based on safety isolation boundary |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH096602A (en) * | 1995-06-14 | 1997-01-10 | Fujitsu Ltd | Information storage method of integrated er model and software development process management system |
| EP1973213B1 (en) * | 2007-03-22 | 2017-12-06 | Abb Research Ltd. | Validating a standardized configuration description |
| CN101873008B (en) * | 2010-07-02 | 2012-05-23 | 国电南瑞科技股份有限公司 | Method for converting SCD (Substation Configuration Description) model into dispatching center CIM (Common Information Model) |
| CN102255389B (en) * | 2011-07-18 | 2013-12-25 | 四川省电力公司 | Method for implementing intensive intelligent substation based on intelligent power grid system |
| CN102510127B (en) * | 2011-10-21 | 2013-09-18 | 南京南瑞继保电气有限公司 | Method for unifying models of on-line monitored first and secondary equipment of power grid |
| CN103928985B (en) * | 2014-04-09 | 2015-10-28 | 国家电网公司 | Based on the connection latching logic automatic testing method of GOOSE communication mechanism |
| CN107871030B (en) * | 2016-09-27 | 2021-04-02 | 国家电网公司 | Substation secondary maintenance safety measure generation method based on SCD file object model |
| CN108197716A (en) * | 2017-12-20 | 2018-06-22 | 囯网河北省电力有限公司电力科学研究院 | Secondary equipment of intelligent converting station safety measure previews online and anti-error method for early warning |
| CN108931972B (en) * | 2018-06-25 | 2019-08-23 | 国电南瑞科技股份有限公司 | A kind of substation secondary device condition intelligent diagnostic method based on model-driven |
| CN110829595B (en) * | 2019-11-14 | 2022-12-27 | 国网安徽省电力有限公司 | Intelligent power station relay protection equipment overhaul safety isolation measure execution method and system |
-
2022
- 2022-01-21 CN CN202210076264.XA patent/CN114498930B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103729805A (en) * | 2014-01-04 | 2014-04-16 | 国家电网公司 | 500kV intelligent substation security arrangement ticket expert system |
| CN107153946A (en) * | 2017-04-28 | 2017-09-12 | 国家电网公司 | Intelligent station is secondary to pacify automatic generation method and the system of arranging |
| CN110955810A (en) * | 2019-11-29 | 2020-04-03 | 国网福建省电力有限公司 | Intelligent substation secondary safety measure graphical representation method based on safety isolation boundary |
Non-Patent Citations (2)
| Title |
|---|
| 基于SCD文件差异分析的二次安全措施***;徐进等;《电子技术》;第68-69页 * |
| 面 向智能变电姑捡修帮助的软件平台设计与实现;黄卿;《中国优秀硕士学位论文全文数据库 》;第C042-1501页 * |
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