CN102005736B - On-line monitoring method of state of relay protection equipment - Google Patents

On-line monitoring method of state of relay protection equipment Download PDF

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Publication number
CN102005736B
CN102005736B CN2010105568732A CN201010556873A CN102005736B CN 102005736 B CN102005736 B CN 102005736B CN 2010105568732 A CN2010105568732 A CN 2010105568732A CN 201010556873 A CN201010556873 A CN 201010556873A CN 102005736 B CN102005736 B CN 102005736B
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China
Prior art keywords
relay protection
state
self check
check information
information
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CN2010105568732A
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Chinese (zh)
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CN102005736A (en
Inventor
裘愉涛
陈水耀
叶艳军
钱建国
朱启晨
徐刚
屠黎明
黄少锋
袁海涛
谭燕
刘文丽
Original Assignee
浙江省电力公司
北京四方继保自动化股份有限公司
华北电力大学
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Priority to CN2010105568732A priority Critical patent/CN102005736B/en
Publication of CN102005736A publication Critical patent/CN102005736A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16Electric power substations
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems

Abstract

The invention discloses an on-line monitoring method of a state of relay protection equipment, which ensures a content of self-inspection information provided by the relay protection equipment. The method comprises the following steps of: classifying self-inspection information; adding additional information and content thereof of each kind of self-inspection information, which is capable of reflecting the influence degree to the equipment state; collecting the self-inspection information provided by the relay protection equipment through using the IEC-61850 communication standard adopted by the communication network in a transformer substation by a state overhaul host, and building a static and dynamic self-inspection information database of the relay protection equipment; and carrying out on-line monitoring on the state of the equipment by using a general state mathematic model of the relay protection equipment in real time so as to provide the guidance for the state overhaul of the relay protection equipment. Through the on-line monitoring method of the state of the relay protection equipment, the state of the relay protection equipment can be monitored on line, the reliability and the usability of the relay protection equipment can be improved, the service life of the relay protection equipment can be prolongged, the operation and overhaul expenses can be reduced and the economic benefit can be increased.

Description

A kind of state of relay protection equipment on-line monitoring method
Technical field
The present invention relates to the relaying protection field in the electric power system, more specifically state of relay protection equipment on-line monitoring technique in the transformer station.
Background technology
Relay protection device is the strong bodyguard of power network safe and stable operation, and its health status directly affects the operation of this electrical network.Also do not have at present a kind of method of state of relay protection equipment on-line monitoring, can only depend on the health status that traditional maintenance mode is understood relay protection device.Traditional relaying protection maintenance has dual mode: cycled recondition and the property revised maintenance.
During the preiodic type maintenance power equipment is carried out take the planned repair system of preventive trial as the basis.For a long time, under power-off condition, carry out regular preventive trial and scheduled overhaul, for finding that relay protection device hidden danger plays a significantly greater role.But this traditional relay protection device detection method exists a lot of not enough, is mainly manifested in:
(1) need power failure to test, equipment availability is low.
(2) emphasize " it is required to expire ", the cycle one is caused the wastes such as maintainer, material to checking, test, repairing.
(3) equipment health status is uncontrollable.Can not predict the health status of equipment, thereby can not in time overhaul equipment, cause the health status of equipment day by day to descend, shorten the useful life of relay protection device.
Namely trouble hunting of the property revised maintenance.Its deficiency shows the requirement that can not realize putting prevention first, and failure effect is generally more serious, has seriously influenced power supply reliability.
Along with the continuous propelling that intelligent grid is built, a lot of Utilities Electric Co.s have carried out the work of relay protection device repair based on condition of component.By the repair based on condition of component of relay protection device, can reduce equipment idle time, improve equipment dependability and availability coefficient, the extension device life-span, reduce the operating maintenance expense, improve the equipment runnability, increase economic efficiency.
The repair based on condition of component of relay protection device depends on the result to the on-line monitoring of state of relay protection equipment.
Summary of the invention
Requirement for the relay protection device repair based on condition of component; the present invention proposes a kind of method of state of relay protection equipment on-line monitoring; its purpose is that the online dynamic self-checking information that the repair based on condition of component main website utilizes relay protection device to be provided, static self check information and health status general mathematical model carry out on-line monitoring to the health status of relay protection device; improve the reliabilty and availability of relay protection device; the life-span of extension device; reduce the operating maintenance expense, increase economic efficiency.
The present invention is specifically by the following technical solutions:
A kind of method of state of relay protection equipment on-line monitoring is characterized in that: the repair based on condition of component main website adopts the IEC-61850 communication standard to gather the self check information that relay protection device provides by communication network in the transformer station; Set up relay protection device static state, dynamic self-checking information database and health status general mathematical model, the health status of equipment carried out on-line monitoring, said method comprising the steps of:
(1) the repair based on condition of component main website obtains quantity of state additional information, analog quantity additional information and the descriptor of described relay protection device before relay protection device to be monitored puts into operation, form relay protection device self check information static database: wherein said quantity of state additional information comprises the character of quantity of state, healthy coefficient, described analog quantity self check information comprises the upper and lower bound of analog quantity, described descriptor characterizes the identity characteristic of relay protection device, comprises device fabrication manufacturer, software version number, hardware integrated circuit board model;
(2) the repair based on condition of component main website adopts the self check information of IEC-61850 standard acquisition relay protection device by communication network in the transformer station, wherein said self check information comprises quantity of state self check information, analog quantity self check information, statistics class self check information, forms relay protection device self check information dynamic data base;
(3) health condition of the general calculated with mathematical model relay protection device of the state of relay protection equipment on-line monitoring shown in the following formula is crossed by the repair based on condition of component main website according to the data communication device of the self check information static database of relay protection device and self check information dynamic data base:
κ = Π j = 0 j = M k sj × Π i = 0 i = N ( γ i × κ i )
Wherein, κ represents state of relay protection equipment, and span is 0~1,
γ iThe actual value that represents i quantity of state self check information, span are 0 or 1,
κ iRepresent i quantity of state self check information to the status of equipment influence degree, the manufacturer determines by relay protection device, and span is 0~1,
k SjRepresent the trend coefficient that j analog quantity, statistics class self check information affect equipment health status, span 0~1,
N represents the number of quantity of state self check information,
M represents total number of analog quantity and statistics class self check information;
(4) when the state of relay protection equipment κ that obtains according to the state of relay protection equipment calculated with mathematical model surpasses the corresponding relay protection device warning line of setting, the repair based on condition of component main website provides alarm signal and reminds the relay protected operation unit of maintenance to arrange the relay protection device maintenance.
The present invention has determined the content of relay protection device self check information in conjunction with the hardware systems of relay protection device itself, the structure and characteristics of software architecture.The content of relay protection device self check information comprises: relay protection device running environment; The relay protection device hardware running information; Relaying protection software self check information; Secondary circuit and communication interface operation information that relay protection device is relevant.
Expression way and acquisition method according to the self check information content are divided into four classes with relay protection device self check information: quantity of state self check information, analog quantity self check information, descriptor and statistics class self check information.Quantity of state self check information refers to the information that can reflect certain definite state in aspect of relay protection device.Analog quantity self check information can only reflect the trend of certain aspect of equipment, need to carry out to the indicatrix of a plurality of analog quantitys in a period of time comprehensive secondary operations analysis, the state of ability predict device.The identity characteristic of descriptor characterization device comprises device fabrication manufacturer, software version number, hardware integrated circuit board model.Statistics class self check information refers to that relaying protection is to the pilot process statistical information of self hardware, software and external loop self check.
The self check information of relay protection device has just been described the state of equipment, does not describe each information to the influence degree of equipment health status.For the health status of monitoring equipment, relay protection device also provides some additional informations.The additional information of quantity of state refers to and can reflect that quantity of state self check information to the information of equipment health status influence degree, comprising: character, healthy coefficient; Character comprises the classifications such as fault, high severity alarm, minor alarm, prompting; Healthy coefficient represents that this information is to equipment health status influence degree, scope 0-1.The additional information of analog quantity refers to the information of equipment health status trend being predicted by analog quantity self check information, comprising: the upper limit, lower limit; Upper and lower bound refers to the normal range of operation that this analog quantity allows.
The state of quantity of state additional information, analog quantity additional information and descriptor does not change with the protection actual operating state, and these information are referred to as static self check information.Quantity of state, analog quantity and statistics category information change with the relay protected operation situation, and these information are referred to as dynamic self-checking information.In practical application, relaying protection dynamic self-checking information is abideed by general communication protocol and is given in real time the repair based on condition of component main website; The static self check information of relaying protection is stored in relay protection device inside in the mode of file, and the repair based on condition of component main website obtains by file service.In the repair based on condition of component main website, dynamic self-checking information and static self check information exchange are crossed ID number of self check information and are carried out interrelated and index.
Online dynamic self-checking information, static self check information and equipment health status general mathematical model that repair based on condition of component of the present invention main website provides in conjunction with relay protection device carry out on-line monitoring to the health status of equipment.
The invention provides a kind of method of state of relay protection equipment on-line monitoring.The application of the method has solved traditional cycled recondition and has revised the problem that maintenance exists; can realize relay protection device repair based on condition of component truly; minimizing equipment idle time; improve equipment dependability and availability coefficient; the extension device life-span; improvement equipment runnability reduces equipment operating maintenance expense and the operation level that improves electrical network.
Description of drawings
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Fig. 1 is state of relay protection equipment on-line monitoring system figure;
Fig. 2 relaying protection self check information gathering and correlating method.
Embodiment
Accompanying drawing 1 is state of relay protection equipment on-line monitoring system figure.In this system diagram, the repair based on condition of component main website finishes the on-line monitoring of state of relay protection equipment by the static self check information database of relaying protection, dynamic self-checking information database and equipment health status generic data model.
Information in the repair based on condition of component main website in static database, the dynamic data base all derives from the self check information that protective device provides.The content of relay protection device self check information comprises: relay protection device running environment; Relay protection device hardware check information; Relaying protection software self check information; Relay protection device external loop self check information.
(1) equipment operating environment.The environment of relay protection device operation mainly comprises: DC input voitage, voltage transformer input voltage, the current transformer input current of the inner humiture of device, device, leave node impact capacity etc.
(2) device hardware self check information.Relaying protection hardware check information spinner will comprise following a few part: equipment operating voltage, mould enter sampled data situation that acquisition circuit situation and merge cells provide, the GOOSE situation that provides into collection situation and intelligent terminal is provided, leave loop situation, device interior communication conditions etc., hardware integrated circuit board model.
(3) device software self check information.Relay protection device software self check information comprises: software version information, information memory state, internal configuration information situation etc.
(4) external circuit self check information.The self check information of external circuit comprises: the error code of voltage transformer summation current transformer loop situation, communication loop situation, optical-fibre channel, the intensity of light signal, with the communication conditions of intelligent terminal and merge cells etc.
Expression way and acquisition method according to the relay protection device self check information content are divided into quantity of state self check information, analog quantity self check information, descriptor and statistics class self check information four large classes with self check information.Quantity of state self check information refers to the information that can reflect certain definite state in aspect of relay protection device,, communication loop situation unusual such as the sampling of: analog quantity etc.Analog quantity self check information can only reflect the trend of certain aspect of equipment, need to carry out to the indicatrix of a plurality of analog quantitys in a period of time comprehensive secondary operations analysis, state that could predict device, such as: the humiture in the device, the DC input voitage of device, leave node impact capacity etc.The identity characteristic of descriptor characterization device comprises device fabrication manufacturer, software version number, hardware integrated circuit board model.Statistics class self check information refers to that relaying protection is to the pilot process statistical information of self hardware, software and external loop self check.Such as comprising the self check total degree in the statistical information of EPROM self check, the number of times of self check mistake occurring; Should comprise the frame number received, the optical-fibre channel error rate etc. in the GOOSE communication self check.
The collection of the equipment operating environment acquisition module in the relay protection device, device hardware self check information acquisition module, device software self check information acquisition module and external loop self check information acquisition module finishing equipment self check information, and according to the self check information database confession state maintenance master access in the classification formation relay protection device of self check information.
The quantity of state of relay protection device, analog quantity self check information have just been described the current state of equipment, do not describe each self check information to the influence degree of equipment health status.In order to carry out the state of relay protection equipment on-line monitoring, relay protection device also provides quantity of state accessory information, analog quantity additional information.Quantity of state accessory information, analog quantity additional information are referred to as self check information additional information.The quantity of state additional information refers to and can reflect that quantity of state self check information to the information of equipment health status influence degree, comprising: character, healthy coefficient.Character comprises the classifications such as fault, high severity alarm, minor alarm, prompting; Healthy coefficient represents that this information is to equipment health status influence degree, scope 0-1; The character of quantity of state, healthy coefficient are according to information the equipment influence degree to be determined, such as: relay protection device had been lost the function of protection after analog quantity sampling abnormal information produced, and its character is that fault, healthy coefficient are 0.The analog quantity additional information refers to the information of equipment health status trend being predicted by analog quantity self check information, comprising: the upper limit, lower limit.Upper and lower bound refers to the scope that this analog quantity allows.Such as: the operating temperature of device, determine that according to the temperature that the electronic devices and components in each plug-in unit allow its bound is divided into-10 ℃ and 55 ℃.
Accompanying drawing 2 has been described the acquisition method of relay protection device self check information and additional information thereof.The state of quantity of state additional information, analog quantity additional information and descriptor just can be determined before relay protection device puts into operation, and does not change with the protection actual operating state, and these information are referred to as static self check information.The content of quantity of state additional information, analog quantity additional information and descriptor is stored in the relay protection device in the mode of XML file.Before relay protection device put into operation, the repair based on condition of component main website adopted file service automatically to import and forming device self check information static database.
Quantity of state, analog quantity and statistics category information change with the relay protected operation situation, and these information are referred to as dynamic self-checking information.Dynamic quantity of state and analog quantity self check information are initiatively given the repair based on condition of component main website by protective relaying device timing or displacement; And it is large to add up dynamically class self check information data amount, and change procedure is slow, is initiatively initiated the mode of information exchange instruction by the repair based on condition of component main website and comes interactive information.The repair based on condition of component main website adopts the IEC-61850 communication standard to obtain these dynamic self check information and forming device self check information dynamic data base.
Pass through the interrelated and index of Information ID between the relay protection device self check information static database of repair based on condition of component main website and the relay protection device self check information dynamic data base.
The direct consersion unit of the quantity of state self check information health status in a certain respect that relay protection device provides; The analog quantity self check information that relay protection device provides, statistics class self check message reflection the development trend of state of relay protection equipment.Consider the various factors that affect equipment health status, the general Mathematical Modeling of state of relay protection equipment is:
κ = Π j = 0 j = M k sj × Π i = 0 i = N ( γ i × κ i ) (formula 1)
Wherein: κ represents state of relay protection equipment; Span: 0~1
γ iThe actual value that represents i quantity of state self check information; Span: 0 or 1
κ iRepresent that i quantity of state self check information is to the status of equipment influence degree; Span: 0~1
k SjRepresent the trend coefficient that j analog quantity, statistics class self check information affect equipment health status; Span 0~1
N represents the number of quantity of state self check information,
M represents total number of analog quantity and statistics class self check information;
Because different relay protection device hardware structure, software architectures and the self check information that provides are different, so the value of its M and N is different.
γ iValue provided in real time by operating relay protection device.Such as: if the relay protection device self check is unusual to leaving, the value of then leaving abnormal information is 1; Otherwise its value is 0.
κ iValue in the additional information of quantity of state, provide.Its value is determined that by the relay protection device manufacturer foundation is that this information is to the influence degree of functions of the equipments.Such as: the SRAM self check makes mistakes and may cause relay protection device malfunction or tripping, and its value should be 0, namely as long as SRAM self check error message appears in device, must stop transport this relay protection device and arrangement maintenance.
k SjMainly be for analog quantity and statistics class self check information.Other several parameters are more complex relatively for its definite method.General obtaining value method is: determine that at first certain analog quantity or statistics category information surpass after the bound that allows equipment health status influence coefficient, the real time data that provides according to equipment is again carried out second-order correction to this healthy coefficient.Such as: the normal range (NR) of the temperature of relay protection device operation is-10 ℃~55 ℃, if equipment provides temperature value within this scope, then its value is 1.If it is 60 ℃ that equipment provides temperature, then value is that (the 0.8th, temperature surpasses after the upper limit equipment health status influence coefficient 0.8*0.9=0.72, is determined by each electronic devices and components temperature characterisitic in the equipment; 0.9 the correction factor when being 60 ℃).
The self check information of repair based on condition of component main website each relay protection device of online acquisition; when the state of relay protection equipment κ that obtains according to the state of relay protection equipment calculated with mathematical model surpassed the corresponding relay protection device warning line of setting, the repair based on condition of component main website provided alarm signal and reminds the relay protected operation unit of maintenance to arrange the relay protection device maintenance.

Claims (4)

1. the method for a state of relay protection equipment on-line monitoring is characterized in that: the self check information that the repair based on condition of component main website adopts IEC-61850 communication standard collection relay protection device to provide by communication network in the transformer station; Set up relay protection device static state, dynamic self-checking information database and health status general mathematical model, the health status of equipment carried out on-line monitoring, said method comprising the steps of:
(1) the repair based on condition of component main website obtains quantity of state additional information, analog quantity additional information and the descriptor of described relay protection device before relay protection device to be monitored puts into operation, and forms relay protection device self check information static database; Wherein said quantity of state additional information comprises the character of quantity of state, healthy coefficient, described analog quantity additional information comprises the upper and lower bound of analog quantity, described descriptor characterizes the identity characteristic of relay protection device, comprises device fabrication manufacturer, software version number, hardware integrated circuit board model;
(2) the repair based on condition of component main website adopts the self check information of IEC-61850 standard acquisition relay protection device by communication network in the transformer station, wherein said self check information comprises quantity of state self check information, analog quantity self check information, statistics class self check information, forms relay protection device self check information dynamic data base;
(3) health condition of the general calculated with mathematical model relay protection device of the state of relay protection equipment on-line monitoring shown in the following formula is crossed by the repair based on condition of component main website according to the data communication device of the self check information static database of relay protection device and self check information dynamic data base:
κ = Π j = 0 j = M k sj × Π i = 0 i = N ( γ i × κ i )
Wherein, κ represents state of relay protection equipment, and span is 0~1,
γ iThe actual value that represents i quantity of state self check information, span are 0 or 1,
κ iRepresent i quantity of state self check information to the status of equipment influence degree, the manufacturer determines by relay protection device, and span is 0~1,
k SjRepresent the trend coefficient that j analog quantity, statistics class self check information affect equipment health status, span 0~1,
N represents the number of quantity of state self check information,
M represents total number of analog quantity and statistics class self check information;
(4) when the state of relay protection equipment κ that obtains according to the state of relay protection equipment calculated with mathematical model surpasses the corresponding relay protection device warning line of setting, the repair based on condition of component main website provides alarm signal and reminds the relay protected operation unit of maintenance to arrange the relay protection device maintenance.
2. state of relay protection equipment on-line monitoring method according to claim 1; it is characterized in that: the content of described quantity of state additional information, analog quantity additional information and descriptor is stored in the relay protection device in the mode of XML file, adopts file mode automatically to import acquisition before relay protection device puts into operation by the repair based on condition of component main website.
3. state of relay protection equipment on-line monitoring method according to claim 1 is characterized in that: described quantity of state and analog quantity self check information by the selftest module collection in the relay protection device and regularly or displacement initiatively give the repair based on condition of component main website; Statistics class self check information is by the relay protection device collection, and the repair based on condition of component main website regularly calls and obtains.
4. state of relay protection equipment on-line monitoring method according to claim 1 is characterized in that: pass through the interrelated and index of Information ID between the relay protection device self check information static database of repair based on condition of component main website and the relay protection device self check information dynamic data base.
CN2010105568732A 2010-11-24 2010-11-24 On-line monitoring method of state of relay protection equipment CN102005736B (en)

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基于大型集控站监控系统下的二次设备状态检修方案;李石等;《继电器》;20070716;第35卷(第14期);第66-69页 *
张思良.500kV变电站变电设备状态检修在线监测系统的设计.《华东电力》.2009,第37卷(第2期),第0264-0266页.
李石等.基于大型集控站监控系统下的二次设备状态检修方案.《继电器》.2007,第35卷(第14期),第66-69页.

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