CN105743071A - Relay protection online safety margin evaluation system - Google Patents
Relay protection online safety margin evaluation system Download PDFInfo
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- CN105743071A CN105743071A CN201410773272.5A CN201410773272A CN105743071A CN 105743071 A CN105743071 A CN 105743071A CN 201410773272 A CN201410773272 A CN 201410773272A CN 105743071 A CN105743071 A CN 105743071A
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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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- 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
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Abstract
The invention provides a relay protection online safety margin evaluation system. The system includes a master station end device installed in a dispatch center and a plurality of sub-station end devices installed in a transformer substation; the master station end device and the sub-station end devices are used for relay protection online safety margin evaluation; the master station end device includes a protection safety margin evaluation module, a data acquisition and processing module, a human-computer interaction module and a public data area; and each sub-station end device includes a protection safety margin evaluation sub module, a data acquisition and processing sub module, a human-computer interaction sub module and a public data sub area. Compared with relay protection online setting or online check, the system can accurately judge whether a protection constant value meets the requirements of the current operation mode of a power grid for protection selectivity and sensitivity and can assist in effectively eliminating the defect that the accuracy of relay protection online setting and online check results is influenced by the accuracy of power grid power flow, power grid parameters and a short-circuiting calculation model.
Description
Technical field
The present invention relates to the system in a kind of Relay Protection Technology in Power System field, in particular to a kind of relay protection safety on line nargin assessment system.
Background technology
Relay protection is one of most important secondary device of power system, is the guarantee of safe operation of power system.Can protective relaying device meet " four property " requirement that electrical network is proposed, whether reasonable is heavily dependent on relay protection constant value.At present, relay protection constant value is all adjusted under off-line state, and remains unchanged in system is run.But; in actual motion, power system operation mode is continually changing; when electrical network due to overhaul of the equipments, newly built construction put into operation and power grid accident and when being in some special running status; part definite value possibly cannot meet the requirement of selectivity and sensitivity; there is the possibility of false protection and tripping the large scale system accident that the scope that directly or indirectly causes power failure is wider.Along with the extensive use of the development of network technology, the construction of private network of electric power system and digital device, the information and the parameter that obtain and revise all kinds of digital device from dispatching terminal will more and more easily realize.Therefore, under current electrical network hardware condition, build the new trend that relay protection safety on line nargin assessment system is Protection Technology development.
The technology close with the assessment of relay protection safety on line nargin has relay protection on-line tuning technology, relay protection on-line check technology etc..On-line tuning and online Verification Technology be based on relay protection off-line setting calculation and what off-line Verification Technology grew up.Compared with calculated off line, use the currently running mode of electrical network in line computation, thus the false protection owing to causing when the result of off-line setting calculation and verification cannot adapt to that some special method of operation of electronic game or tripping can be reduced to a certain extent.But, on-line tuning and the online Verification Technology of relay protection are although it is contemplated that the currently running mode of electrical network, but adjust and calculation and check is still the same with calculated off line is all based on the result that steady-state shortcircuit current calculates, and are left out the impact of trend.
Thus, the accuracy of relay protection on-line tuning and online check result is by the impact of the accuracy of electric network swim, electrical network parameter and short circuit calculation model.
Accordingly, it is desirable to provide the relay protection safety on line nargin assessment system of a kind of improvement.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the present invention provides a kind of relay protection safety on line nargin assessment system.
Realizing the solution that above-mentioned purpose adopts is:
A kind of relay protection safety on line nargin assessment system; main website end equipment that described system includes being installed on control centre and multiple substation end equipment being installed in transformer station, it thes improvement is that: described main website end equipment and described substation end equipment are for the assessment of relay protection safety on line nargin；
Described main website end equipment includes protection Safety Margin module, data acquisition and procession module, human-computer interaction module and public data area, and described protection Safety Margin module, data acquisition and procession module, human-computer interaction module communicate with described public data area respectively；
Described substation end equipment includes sub-protection Safety Margin module, subdata collection and processing module, sub-human-computer interaction module and sub-public data area, and described sub-protection Safety Margin module, subdata collection communicate with described sub-public data area respectively with processing module and sub-human-computer interaction module.
Further, described protection Safety Margin module includes fault element discrimination module, fault zone search module and protection safe early warning module.
Further, described data acquisition and processing (DAP) module obtains protection act information and the breaker actuation information of plant stand, sends enabling signal to described protection Safety Margin module；
The described fault element discrimination module of described protection Safety Margin module determines fault element by described protection act information and breaker actuation information；
Described fault zone search module starts to search for all primary equipments within three section protection scope and back-up protection thereof according to a topological model from described fault element；
According to margin of safety alarm threshold value, described protection safe early warning module judges that described fault element margin of safety of all back-up protections in three segment limits, whether lower than alarm threshold value, then produces warning information lower than described threshold values.
Further, described sub-protection Safety Margin module includes protecting margin of safety to determine that module and basic electric parameters determine module；
Described subdata collection is that described subdata collection and processing module obtain described protection act information and protection point information and be stored in described sub-public data area for the client communicated with the protection device in transformer station with processing module；
After the failure wave-recording module of described substation end equipment completes the storage of failure wave-recording file; described subdata collection and the collection of processing module collection storage protection action message and breaker actuation information, send enabling signal to described sub-protection Safety Margin module；
Described basic electric parameters determines module read failure recorded wave file, according to conventional current break quantity algorithm failure judgement initial time and trouble shooting moment, fault phase, recycle the electric current phasor after all-round or half cycle Fourier algorithm calculating fault, voltage phasor and measurement impedance；
Electric parameters when described protection margin of safety determines module according to fault, the sensitivity requirement of back-up protection, the protection domain of back-up protection and security margin index calculate the margin of safety value of back-up protection.
Further, described main website end equipment and described substation end equipment adopt embedded equipment through security hardening, need to all be deployed in safe II district.
Further, described main website end equipment and described substation end equipment are respectively equipped with WEB service module, it is achieved remote access protection safe early warning information and remote parameter are arranged.
Further; described protection Safety Margin module and described sub-protection Safety Margin module calculate the back-up protection margin of safety of described relay protection according to the actual recorder data of Power System Disturbances; if described back-up protection margin of safety is more than or equal to 1, then the protection sending margin of safety too low sends alarm.
Further, described protection Safety Margin module and described sub-protection Safety Margin module determine described back-up protection margin of safety X by following formula (1) or following formula (2),；
X=A/ (B*C) (1)
X=C/ (A*B) (2)
Wherein, A represents fault phase electrical quantities measurement value during fault, and B represents that sensitivity requirement, C represent protection act value.
Compared with immediate prior art, the method have the advantages that
1, system provided by the invention is based on the electrical network electric parameters recorder data of actual measurement; judge whether the definite value of protection meets the requirement to protective seletion and sensitivity of the electrical network currently running mode by detecting protection security margin index, and the protection that margin of safety is relatively low is provided alarm.
2, system provided by the invention is compared with relay protection on-line tuning or on-line testing; can judge whether protection definite value meets the requirement to protective seletion and sensitivity of the electrical network currently running mode exactly, it is possible to be effectively prevented from the shortcoming that the accuracy of relay protection on-line tuning and online check result is affected by electric network swim, electrical network parameter and short circuit calculation model accuracy.
3, system provided by the invention is compared with relay protection on-line tuning or on-line testing, and the maintenance difficulties of system is less, it is not necessary to safeguard equivalent electromotor, equivalent load model, it is not required that obtain the trend distribution of the whole network.
4, system provided by the invention is based on the electrical network electric parameters recorder data of actual measurement; judge whether the definite value of protection meets the requirement to protective seletion and sensitivity of the electrical network currently running mode by detecting protection security margin index, and the protection that margin of safety is relatively low is provided alarm；Compared with relay protection on-line tuning or on-line testing; can judge whether protection definite value meets the requirement to protective seletion and sensitivity of the electrical network currently running mode exactly, it is possible to be effectively prevented from the shortcoming that the accuracy of relay protection on-line tuning and online check result is affected by electric network swim, electrical network parameter and short circuit calculation model accuracy.
Accompanying drawing explanation
Fig. 1 is relay protection safety on line nargin assessment system deployment scene graph in the present embodiment；
Fig. 2 is Master Station Software population structure schematic diagram in the present embodiment；
Fig. 3 is the present embodiment neutron station software population structure schematic diagram；
Fig. 4 is main website end protection Safety Margin module main flow chart in the present embodiment；
Fig. 5 is that in the present embodiment, main website end fault involves range searching block flow diagram；
Fig. 6 is main website end protection safe early warning man machine interface schematic diagram in the present embodiment；
Fig. 7 is that in the present embodiment, substation end protection margin of safety calculates main flow chart；
Fig. 8 is the relay protection safety on line assessment function of system, data and control planning figure in the present embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As it is shown in figure 1, Fig. 1 is relay protection safety on line nargin assessment system deployment scene graph in the present embodiment；Main website end deployed with devices, in control centre or centralized control center, is assessed for relay protection safety on line nargin.
Substation end deployed with devices, in transformer station, is assessed for relay protection safety on line nargin.
As in figure 2 it is shown, Fig. 2 is Master Station Software population structure schematic diagram in the present embodiment；Main website end equipment includes protection Safety Margin module, data acquisition and procession module, human-computer interaction module and public data area.
Described protection Safety Margin module, data acquisition and procession module, human-computer interaction module communicate with described public data area respectively.
Protection Safety Margin module, protection Safety Margin module includes fault element discrimination module, fault zone search module and protection safe early warning module.
The operation of protection Safety Margin module comprises the following steps:
1) from protection act information, primary equipment title is read；
2) according to a topological model, the chopper that search primary equipment is joined directly together；
3) if the chopper that primary equipment is joined directly together conjugates, then judge that this primary equipment is as fault element.
Data acquisition and procession module, is used for resolving IEC61850 message, gathers protection and breaker actuation information, protection point information and back-up protection margin of safety etc..
Human-computer interaction module, it is provided that by panel liquid crystal viewing system situation and data, the ability that some parameters are configured.
Public data area, carries out data communication with each module.
Main website end equipment also includes the WEB service module for realizing remote access protection safe early warning information and remotely located main website parameter.
As it is shown on figure 3, Fig. 3 is the present embodiment neutron station software population structure schematic diagram；Substation end equipment includes sub-protection Safety Margin module, subdata collection and processing module, sub-human-computer interaction module and sub-public data area.
Described sub-protection Safety Margin module, subdata collection communicate with described sub-public data area respectively with processing module and sub-human-computer interaction module.
Son protection Safety Margin module, including calculating the module of protection margin of safety and calculating the module of basic electric parameters.
Subdata gathers and processing module, is used for resolving IEC61850 message, gathers protection and breaker actuation information, protection point information etc..
Sub-human-computer interaction module, it is provided that by panel liquid crystal viewing system situation and data, the ability that some parameters are configured.
Sub-public data area, carries out data communication with each module.
Described substation end equipment is provided with model and imports and configuration tool, and described configuration tool is used for generating substation model information, including relaying configuration model, a topological model etc..Substation model information can upload to master station device by IEC61850 file service.
As shown in Figure 4, Fig. 4 is the protection Safety Margin module main flow chart of main website end in the present embodiment；In main website end equipment; data acquisition and processing (DAP) process obtains protection and the breaker actuation message file of all plant stands; obtained protection and the breaker actuation message file of all plant stands by IEC61850 file service after; give protection one signal of Safety Margin module; starting protection Safety Margin module, calculates protection margin of safety.
Fault element discrimination module passes through protection act information and breaker actuation information, it is judged that faulty equipment.
Fault zone search module, from described fault element, searches for all primary equipments within three section protection scope and back-up protection thereof according to a topological model, and Fig. 5 is that in the present embodiment, fault involves range searching block flow diagram.
The fault zone search module electric connecting relation according to primary equipment; start successively outwards to search for the primary equipment of 3 layers of electrical communication from fault element; the all primary equipments within the scope of three section protection can be obtained; then further according to the relaying configuration information of primary equipment, all protections of fault zone can be obtained.
Initialize search variables; hunting zone is initially entered from fault element; check whether the element that there is untreated identification; it is absent from, searches all protected locations being associated with fault element; existing, whether the judgment device number of plies reaches to specify the number of plies (it is 3 layers that three section protection scope generally arranges the search equipment number of plies), reaches the then related protected location of lookup；Not up to the connection node then searching equipment, it may be judged whether there is untreated connection node, be absent from, return and judge whether untreated equipment.
There is untreated connection node then connecting joint point and enter hunting zone, judge whether untreated end points, exist and then judge whether to connect bus, connect then respective bus bars equipment and enter hunting zone, it is absent from, judges whether to be connected with switch tool, be not connected with switch tool, then equipment except switch tool and bus enters hunting zone accordingly；Being connected with, the opposite end end points of the disconnecting link closed enters hunting zone.
(margin of safety of requirement is more high, and the threshold value arranged is more big according to margin of safety alarm threshold value for protection safe early warning module; generally may be configured as the value being not less than 1); in failure judgement element three segment limit, whether the margin of safety of all back-up protections is lower than alarm threshold value, if lower than threshold values, sends warning information.
Fig. 6 is main website end protection safe early warning man machine interface schematic diagram in the present embodiment；1-20 represents different choppers；AB is faulty line, there is fault in the middle of representing；D1-D8 represents bus.
Fig. 7 is the present embodiment neutron protection Safety Margin module main flow chart；After the failure wave-recording module of substation completes the storage of failure wave-recording file; data acquisition and procession module completes to gather and storage protection action message and breaker actuation information; to sub-one signal of protection Safety Margin module; indicate new failure wave-recording; thus starting protection margin of safety computing module, it is calculated.
Calculating process is: determines whether new failure wave-recording, is absent from, returns section start；There is then read failure recorded wave file, calculate basic electric parameters, calculate protection margin of safety.
Basic electric parameters determines module read failure recorded wave file, according to conventional current break quantity algorithm failure judgement initial time and trouble shooting moment, fault phase, recycle all-round or half cycle Fourier algorithm calculating fault after current phasor, voltage phasor and measurement impedance.
Information and the security margin index such as electric parameters and the sensitivity requirement of back-up protection, protection domain when protection margin of safety determines module according to fault, calculate the margin of safety value of back-up protection.
Substation end data collection and processing module are the clients of IEC61850MMS, communicate with the protection device in transformer station, it is thus achieved that protection act information and protection point information, and are stored in public data area.
Protection Safety Margin module and son protection Safety Margin module carry out the calculating assessment of margin of safety; described back-up protection margin of safety is calculated by following formula (1) or following formula (2); if described back-up protection margin of safety is more than or equal to 1, then alert；
Electrical quantities measurement value/sensitivity requirement/protection act value (1) during described back-up protection margin of safety=fault；
Described back-up protection margin of safety=protection act value/(during fault electrical quantities measurement value * sensitivity requirement) (2).
As shown in Figure 8, Fig. 8 is the relay protection safety on line assessment function of system, data and control planning figure in the present embodiment；The function distribution of the relay protection safety on line nargin assessment main website of system and substation, and main website, main website, data between protection IED and WEB client side and control planning.
Control 01 and control 02 for starting the main flow of Master Station Software；Control 04 for sending the order of " protection safe early warning information " outside native system；Controlling 05 is the order of Remote configuration main website, sends " configuration parameter " or receive " configuration parameter " outside native system；Controlling 06 is the order of main website configuration substation, and substation sends configuration parameter to main website or receives configuration parameter order.
In the present embodiment, use the protection of syllogic principle, calculate margin of safety, the design of protection margin of safety parameter is described: specifically include following 2 points:
1, calculate back-up protection margin of safety X by following formula (1) or (2) to calculate:
X=A/ (B*C) (1)
X=C/ (A*B) (2)
Wherein, A represents fault phase electrical quantities measurement value during fault, and B represents that sensitivity requirement, C represent protection act value.
2, back-up protection margin of safety less than 1, can not otherwise need alarm.
Fault phase, is determined by Fault Phase Selection algorithm；Fault phase fault phase electrical quantities measurement value, is obtained by the basic electric parameters computing module of substation end equipment；Fault initial time, is obtained by current break quantity algorithm；Electric current phasor and voltage phasor, obtained by all-round or half cycle Fourier algorithm；Electrical quantities measurement value and sensitivity requirement according to table 1 below, 2 determine；Measure impedance, be calculated as follows acquisition:
1) measurement calculation method of ground distance or impedance ground:
Za=Ua/ (Ia+K*3I0)
Zb=Ub/ (Ib+K*3I0)
Zc=Uc/ (Ic+K*3I0)
Wherein, K is zero-utility theory, and corresponding attribute is: PDIS.K0Fact (by IEC61850 access interface, read corresponding value according to attribute)；The impedance ground of Za, Zb, Zc respectively A, B, C three-phase；The voltage of Ua, Ub, Uc respectively A, B, C three-phase；The electric current of Ia, Ib, Ic respectively A, B, C three-phase
2) measurement calculation method of phase spacing or phase to phase impedance:
Zab=(Ua-Ub)/(Ia-Ib)
Zbc=(Ub-Uc)/(Ib-Ic)
Zca=(Uc-Ua)/(Ic-Ia)
Wherein, the impedance that Zab, Zbc, Zca respectively AB is alternate, BC is alternate, CA is alternate；The voltage of Ua, Ub, Uc respectively A, B, C three-phase；The electric current of Ia, Ib, Ic respectively A, B, C three-phase.
In above-mentioned formula, protection act value is generally protection definite value, is obtained from protection device IED by IEC61850MMS.For route protection and transformer protection; the attribute such as table 1 below of the IEC61850 relay protective scheme node corresponding to various types of protection definite values, shown in 2; table 1 illustrates continuous item in route protection margin of safety computing formula, and table 2 illustrates continuous item in tranformer protection margin of safety computing formula.Include the electrical quantities measurement value corresponding to back-up protection, sensitivity requirement attribute corresponding to protection act value respectively.
When back-up protection margin of safety calculates according to back-up protection type, direct table reads required electrical quantities measurement value and sensitivity requirement.
In reading process, according to protection act value correspondence attribute, native system can pass through IEC61850 access interface and obtain relevant parameter from protection device.
| Back-up protection | Electrical quantities measurement value | Sensitivity requirement | Protection act value correspondence attribute |
| Ground distance II section | Za/Zb/Zc | 1.5 | PDIS.GndSt |
| Ground distance III section | Za/Zb/Zc | 1.5 | PDIS.GndSt |
| Phase spacing II section | Zab/Zbc/Zca | 1.5 | PDIS.PhStr |
| Phase spacing III section | Zab/Zbc/Zca | 1.5 | PDIS.PhStr |
| Zero sequence crosses stream II section | I0 | 2.0 | PTOC.StrVal |
| Zero sequence crosses stream III section | I0 | 2.0 | PTOC.StrVal |
| Zero sequence crosses stream IV section | I0 | 2.0 | PTOC.StrVal |
Table 1
| Back-up protection | Electrical quantities measurement value | Sensitivity requirement | Protection act value correspondence attribute |
| Phase to phase impedance 1 time limit | Zab/Zbc/Zca | 1.5 | PDIS.PhStr |
| Phase to phase impedance 2 time limit | Zab/Zbc/Zca | 1.5 | PDIS.PhStr |
| Impedance ground 1 time limit | Za/Zb/Zc | 1.5 | PDIS.GndStr |
| Impedance ground 2 time limit | Za/Zb/Zc | 1.5 | PDIS.GndStr |
| Press off again and locked stream I section 1 time limit | Ia/Ib/Ic | 1.5 | PVOC.StrValSG |
| Press off again and locked stream I section 2 time limit | Ia/Ib/Ic | 1.5 | PVOC.StrValSG |
| Press off again and locked stream II section | Ia/Ib/Ic | 1.5 | PVOC.StrValSG |
| It's stream I section 1 time limit pasts zero sequence | I0 | 2.0 | PTOC.StrVal |
| It's stream I section 2 time limit pasts zero sequence | I0 | 2.0 | PTOC.StrVal |
| Zero sequence crosses stream II section | I0 | 2.0 | PTOC.StrVal |
| Spend 1 time limit of stream | Ia/Ib/Ic | 1.5 | PTOC.StrVal |
| Spend 2 time limits of stream | Ia/Ib/Ic | 1.5 | PTOC.StrVal |
Table 2
Finally should be noted that: above example is merely to illustrate the technical scheme of the application but not the restriction to its protection domain; although with reference to above-described embodiment to present application has been detailed description; those of ordinary skill in the field are it is understood that the detailed description of the invention of application still can be carried out all changes, amendment or equivalent replacement by those skilled in the art after reading the application; but these change, revise or equivalent replacement, all within the claims that application is awaited the reply.
Claims (8)
1. a relay protection safety on line nargin assessment system; main website end equipment that described system includes being installed on control centre and multiple substation end equipment being installed in transformer station, it is characterised in that: described main website end equipment and described substation end equipment are for the assessment of relay protection safety on line nargin；
Described main website end equipment includes protection Safety Margin module, data acquisition and procession module, human-computer interaction module and public data area, and described protection Safety Margin module, data acquisition and procession module, human-computer interaction module communicate with described public data area respectively；
Described substation end equipment includes sub-protection Safety Margin module, subdata collection and processing module, sub-human-computer interaction module and sub-public data area, and described sub-protection Safety Margin module, subdata collection communicate with described sub-public data area respectively with processing module and sub-human-computer interaction module.
2. a kind of relay protection safety on line nargin assesses system as claimed in claim 1, it is characterised in that: described protection Safety Margin module includes fault element discrimination module, fault zone search module and protection safe early warning module.
3. a kind of relay protection safety on line nargin assesses system as claimed in claim 2; it is characterized in that: described data acquisition and processing (DAP) module obtains protection act information and the breaker actuation information of plant stand, sends enabling signal to described protection Safety Margin module；
The described fault element discrimination module of described protection Safety Margin module determines fault element by described protection act information and breaker actuation information；
Described fault zone search module starts to search for all primary equipments within three section protection scope and back-up protection thereof according to a topological model from described fault element；
According to margin of safety alarm threshold value, described protection safe early warning module judges that described fault element margin of safety of all back-up protections in three segment limits, whether lower than alarm threshold value, then produces warning information lower than described threshold values.
4. a kind of relay protection safety on line nargin assesses system as claimed in claim 1, it is characterised in that: described sub-protection Safety Margin module includes protection margin of safety and determines that module and basic electric parameters determine module；
Described subdata collection is that described subdata collection and processing module obtain described protection act information and protection point information and be stored in described sub-public data area for the client communicated with the protection device in transformer station with processing module；
After the failure wave-recording module of described substation end equipment completes the storage of failure wave-recording file; described subdata collection and the collection of processing module collection storage protection action message and breaker actuation information, send enabling signal to described sub-protection Safety Margin module；
Described basic electric parameters determines module read failure recorded wave file, according to conventional current break quantity algorithm failure judgement initial time and trouble shooting moment, fault phase, recycle the electric current phasor after all-round or half cycle Fourier algorithm calculating fault, voltage phasor and measurement impedance；
Electric parameters when described protection margin of safety determines module according to fault, the sensitivity requirement of back-up protection, the protection domain of back-up protection and security margin index calculate the margin of safety value of back-up protection.
5. a kind of relay protection safety on line nargin assesses system as claimed in claim 1, it is characterised in that: described main website end equipment and described substation end equipment adopt embedded equipment through security hardening, need to all be deployed in safe II district.
6. a kind of relay protection safety on line nargin assesses system as claimed in claim 1, it is characterised in that: described main website end equipment and described substation end equipment are respectively equipped with WEB service module, it is achieved remote access protection safe early warning information and remote parameter are arranged.
7. a kind of relay protection safety on line nargin assesses system as claimed in claim 1; it is characterized in that: described protection Safety Margin module and described sub-protection Safety Margin module calculate the back-up protection margin of safety of described relay protection according to the actual recorder data of Power System Disturbances; if described back-up protection margin of safety is more than or equal to 1, then the protection sending margin of safety too low sends alarm.
8. a kind of relay protection safety on line nargin assesses system as claimed in claim 7; it is characterized in that: described protection Safety Margin module and described sub-protection Safety Margin module determine described back-up protection margin of safety X by following formula (1) or following formula (2)；
X=A/ (B*C) (1)
X=C/ (A*B) (2)
Wherein, A represents fault phase electrical quantities measurement value during fault, and B represents that sensitivity requirement, C represent protection act value.
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| CN109713793A (en) * | 2018-12-26 | 2019-05-03 | 北京四方继保自动化股份有限公司 | A kind of substation station power supply presence assessment system and method |
| CN110780627A (en) * | 2019-10-31 | 2020-02-11 | 贵州电网有限责任公司 | Device and method for online monitoring three-phase action synchronization time of GIS operating mechanism |
| CN111614066A (en) * | 2020-05-20 | 2020-09-01 | 国网河北省电力有限公司电力科学研究院 | Automatic setting method and system for relay protection setting value of power distribution network |
| CN108649558B (en) * | 2018-04-23 | 2021-06-22 | 中国南方电网有限责任公司 | Method for obtaining user information of power grid element |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1134867A1 (en) * | 2000-03-10 | 2001-09-19 | ABB Power Automation AG | Method and device for assessing the stability of an electric power transmission network |
| CN101387679A (en) * | 2008-09-17 | 2009-03-18 | 中国电力科学研究院 | Method for weighting dynamic voltage stability margin index |
| US20100262309A1 (en) * | 2007-11-16 | 2010-10-14 | University Of Strathclyde | Active network management |
| CN201928086U (en) * | 2010-12-21 | 2011-08-10 | 华东电网有限公司 | Intelligent grid comprehensive alarm and cooperative processing system |
| CN103020476A (en) * | 2012-12-28 | 2013-04-03 | 中国南方电网有限责任公司超高压输电公司 | Method and system for assessing relay protection dynamic characteristics of high-voltage direct-current power transmission line |
-
2014
- 2014-12-12 CN CN201410773272.5A patent/CN105743071B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1134867A1 (en) * | 2000-03-10 | 2001-09-19 | ABB Power Automation AG | Method and device for assessing the stability of an electric power transmission network |
| US20100262309A1 (en) * | 2007-11-16 | 2010-10-14 | University Of Strathclyde | Active network management |
| CN101387679A (en) * | 2008-09-17 | 2009-03-18 | 中国电力科学研究院 | Method for weighting dynamic voltage stability margin index |
| CN201928086U (en) * | 2010-12-21 | 2011-08-10 | 华东电网有限公司 | Intelligent grid comprehensive alarm and cooperative processing system |
| CN103020476A (en) * | 2012-12-28 | 2013-04-03 | 中国南方电网有限责任公司超高压输电公司 | Method and system for assessing relay protection dynamic characteristics of high-voltage direct-current power transmission line |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884707A (en) * | 2017-09-30 | 2018-04-06 | 杨启蓓 | High-voltage circuit-breaker switching on-off time on-Line Monitor Device and method |
| CN107884707B (en) * | 2017-09-30 | 2018-12-21 | 杨启蓓 | High-voltage circuit-breaker switching on-off time on-Line Monitor Device and method |
| CN108649558B (en) * | 2018-04-23 | 2021-06-22 | 中国南方电网有限责任公司 | Method for obtaining user information of power grid element |
| CN109713793A (en) * | 2018-12-26 | 2019-05-03 | 北京四方继保自动化股份有限公司 | A kind of substation station power supply presence assessment system and method |
| CN109713793B (en) * | 2018-12-26 | 2020-09-01 | 北京四方继保自动化股份有限公司 | Power supply online state evaluation system and method for transformer substation |
| CN110780627A (en) * | 2019-10-31 | 2020-02-11 | 贵州电网有限责任公司 | Device and method for online monitoring three-phase action synchronization time of GIS operating mechanism |
| CN111614066A (en) * | 2020-05-20 | 2020-09-01 | 国网河北省电力有限公司电力科学研究院 | Automatic setting method and system for relay protection setting value of power distribution network |
| CN111614066B (en) * | 2020-05-20 | 2022-06-10 | 国网河北省电力有限公司电力科学研究院 | Automatic setting method and system for relay protection setting value of power distribution network |
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