CN111830342A - Multi-system-fused intelligent substation relay protection dynamic scheduled inspection method - Google Patents
Multi-system-fused intelligent substation relay protection dynamic scheduled inspection method Download PDFInfo
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- CN111830342A CN111830342A CN202010633881.6A CN202010633881A CN111830342A CN 111830342 A CN111830342 A CN 111830342A CN 202010633881 A CN202010633881 A CN 202010633881A CN 111830342 A CN111830342 A CN 111830342A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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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
- H02J13/00002—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 monitoring
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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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
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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Abstract
The invention discloses a multi-system fused intelligent substation relay protection dynamic scheduled inspection method which comprises the steps of setting an automatic inspection cycle, an automatic scheduled inspection cycle and an early warning cycle; initializing the regular inspection counting time of each inspection item as initial timing time; and automatically inspecting each inspection item in the automatic inspection period to obtain a corresponding automatic inspection result, and confirming the result and resetting the regular inspection counting time according to the automatic inspection result. In the automatic scheduled inspection period and before the early warning period, the inspection items all correctly act, and the automatic inspection results are normal, the relay protection device can completely stop the scheduled inspection without stopping operation, and the scheduled inspection period is prolonged; if the automatic inspection result of the inspection project is no result all the time, the operation is stopped for the inspection in the early warning period, and only the inspection projects which are not operated can be inspected according to the inspection projects, so that the number of the inspection projects to be inspected can be compressed to the minimum, the power failure time is shortened, and the workload of the inspection projects to be inspected is reduced.
Description
Technical Field
The invention is suitable for the technical field of secondary operation and maintenance of intelligent substations, and particularly relates to a multi-system-fused dynamic scheduled inspection method for relay protection of an intelligent substation.
Background
At present, the relay protection of the power system in operation adopts a regular inspection mode, and the regular inspection period is generally three years according to the requirements of relevant specifications. And when the regular inspection period is up, whether the current equipment operates normally or not, the relay protection device is stopped for inspection by maintenance work, and inspection items and inspection schemas are different according to the grade and type of voltage protection. The periodic inspection mode can find some hidden dangers of relay protection, including unqualified sampling precision, overlarge null shift, failure in opening/opening and the like. However, in the mode of strictly stopping operation and maintaining according to the regular inspection period, the workload is large, the test period is long, certain manpower and material resources are required to be consumed, the relay protection device needs to be stopped, and the interval of a primary circuit corresponding to the relay protection device may also need to be powered off, so that the continuity of power supply is influenced. In addition, the safety arrangement in the inspection process is complex, and the phenomenon that the pressure plate is missed or mistakenly thrown and the modified fixed value is mistakenly recovered occurs in the inspection recovery process, which additionally increases the risk of wrong actions of relay protection, so that the relay protection equipment is not damaged but damaged. The secondary equipment condition maintenance is another new mode for replacing relay protection periodic inspection, but the research and standardization of input quantity, output quantity and intermediate model of the condition maintenance at the present stage have a longer distance from the actual engineering application.
The intelligent oscillograph system integrates functions of transient wave recording, network message recording, relay protection online monitoring and the like, can obtain high-precision steady-state and transient wave recording COMTRADE format waveform files, has SV, GOOSE and MMS message continuous recording functions, simultaneously supports MMS model service, and obtains various states of a relay protection device online in real time.
Disclosure of Invention
The invention aims to provide a multi-system-fused intelligent substation relay protection dynamic scheduled inspection method aiming at the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical measures:
a multi-system-fused intelligent substation relay protection dynamic scheduled inspection method comprises the following steps:
step 1, setting an automatic inspection period T1, an automatic scheduled inspection period T2 and an early warning period T3, wherein the early warning period T3 is in the automatic scheduled inspection period T2 and is positioned at the last time period of the automatic scheduled inspection period T2, and the automatic inspection period T1 is set in the automatic scheduled inspection period T2 except the time period of the early warning period T3;
step 2, setting automatic inspection items and scheduled inspection items, wherein the automatic inspection items and the scheduled inspection items are consistent with the inspection items, and initializing scheduled inspection counting time of each inspection item as initial timing time;
step 3, acquiring a relay protection reference template, setting a threshold value of a test item, and setting a relay protection whole group action template;
step 4, automatically inspecting each inspection item in the automatic inspection period T1 to obtain the corresponding automatic inspection result,
the scheduled inspection counting time of the inspection items is within the automatic scheduled inspection period T2, but the early warning period T3 is not entered:
if the automatic inspection result is normal, resetting the regular inspection counting time of the inspection item to be the initial timing time and timing again;
if the automatic inspection result is abnormal, resetting the regular inspection counting time of the inspection item to enter an early warning period T3, confirming the automatic inspection result, eliminating the abnormal condition, resetting the regular inspection counting time of the inspection item to be initial timing time, and timing again;
and the regular inspection counting time of the inspection project is within the automatic regular inspection period T2 and before entering the early warning period T3, when the automatic inspection result is no result, the regular inspection counting time of the inspection project enters the early warning period T3, then the manual inspection of the inspection project is carried out, the regular inspection counting time of the inspection project is reset to be the initial timing time after the manual inspection, and the timing is restarted.
The inspection items as described above include software version inspection, inverter power inspection, precision dynamic inspection, null shift dynamic inspection, functional press plate inspection, constant value control word inspection, whole set transmission inspection, failure and associated loop inspection, GOOSE open-in inspection, GOOSE open-out inspection, time synchronization inspection, and operation maintenance state inspection.
The relay protection reference template comprises a pressure plate template, a fixed value and control word template, a software version-downloading time-CRC (cyclic redundancy check) code template and a GOOSE open-state template;
the threshold values of the inspection items comprise a high out-of-limit threshold value, a low out-of-limit threshold value, a zero drift analog quantity threshold value, a frequency threshold value and a time threshold value.
The automatic inspection cycle T1 described above performs automatic inspection on each inspection item, and obtaining a corresponding automatic inspection result includes the following steps:
step 4.1, software version checking is carried out, and the method comprises the following steps: acquiring a software version, software generation time and a CRC code of the relay protection device in an automatic inspection period T1 through MMS model service, comparing the software version, the software generation time and the CRC code with the software version, the software generation time and the CRC code in a software version-downloading time-CRC code template, and if the comparison is consistent, the automatic inspection result is normal, and if the comparison is inconsistent, the automatic inspection result is abnormal;
and 4.2, carrying out inverter power supply inspection, comprising the following steps: through MMS model service, acquiring working voltage of the relay protection device dsAin data centralized relay protection device in an automatic inspection period T1, and if the working voltage of the relay protection device is less than or equal to a high out-of-limit threshold value and more than or equal to a low out-of-limit threshold value, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal;
step 4.3, performing dynamic precision inspection, wherein the dynamic precision inspection comprises steady-state precision inspection and transient precision inspection,
step 4.3.1, the steady-state precision test comprises the following steps: in an automatic routing inspection period T1, comparing the steady-state analog quantity effective value recorded by the intelligent substation by using the intelligent recorder system and the MMS analog quantity effective value in the relay protection telemetry data set dsRelayAin, wherein the difference value between the steady-state analog quantity effective value and the MMS analog quantity effective value of the SV accessed intelligent substation is a steady-state analog quantity difference value,
if the steady-state analog quantity difference value is within the set steady-state precision threshold difference value range, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal;
step 4.3.2, the transient precision test comprises the following steps: after primary relay protection action is compared, obtaining a difference value between the effective value of the transient analog quantity of the relay protection recording and the effective value of the transient analog quantity of the intelligent recorder recording, recording the difference value as the transient analog quantity difference value, and also obtaining switching value change data of the relay protection recording and switching value change data of the intelligent recorder recording;
if the transient analog quantity difference value is within the set transient precision threshold difference value range, and the switching value variation data of the relay protection wave recording is consistent with the switching value variation data of the intelligent wave recorder wave recording, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal;
and 4.4, performing zero drift dynamic inspection, comprising the following steps of: acquiring the position state of a breaker in a GOOSE message through an intelligent wave recorder system, acquiring the difference value of an analog quantity effective value acquired by the intelligent wave recorder and an analog quantity effective value corresponding to a relay protection dsRelayAin data set when the position of the breaker or the position of an isolation knife switch is a branch position, recording as a null shift analog quantity difference value,
if the zero drift analog quantity difference value does not exceed the zero drift analog quantity threshold value range, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal;
step 4.5, performing functional pressure plate inspection, including the following steps of obtaining the pressure plate state in the relay protection pressure plate data set dsRelayEna in an automatic inspection period T1 through MMS model service,
comparing the pressing plate state in the relay protection pressing plate data set dsRelayEna with the pressing plate template, and if the comparison is consistent, automatically checking that the result is normal; and comparing the inconsistent automatic inspection results to be abnormal.
And 4.6, carrying out constant value control word inspection, comprising the following steps: through MMS model service, constant value control words in a relay protection constant value data set dsSetting are obtained in an automatic inspection period T1,
comparing the constant value control word in the relay protection constant value data set dsSetting with the constant value and control word template, and if the comparison is consistent, automatically checking that the result is normal; and if the results are inconsistent, the automatic inspection result is abnormal.
Step 4.7, carrying out GOOSE import inspection, comprising the following steps:
GOOSE open test includes the following steps: through MMS model service, the GOOSE open state of the relay protection remote signaling data set dsRelayDin is obtained in the automatic inspection period T1,
if the GOOSE open state in the automatic inspection period T1 changes, comparing the GOOSE open state with the GOOSE open state template, if the comparison is consistent, the automatic inspection result is normal, and if the comparison is inconsistent, the automatic inspection result is abnormal.
Step 4.8, carrying out GOOSE export test, comprising the following steps:
for GOOSE output passing through the switch, acquiring GOOSE messages through a network message recording function of the intelligent recorder to directly acquire GOOSE output change;
and for the GOOSE output of the relay protection direct tripping, acquiring a GOOSE output inverse correction message sent by the intelligent terminal, and indirectly acquiring the GOOSE output change.
If the GOOSE output in the automatic inspection period T1 changes and the change frequency is less than or equal to the set frequency threshold, the automatic inspection result is normal; the GOOSE output is changed, and the change frequency is greater than the frequency threshold value, the automatic inspection result is abnormal;
4.9, checking the operation maintenance state for polling, and acquiring the maintenance pressure plate state in a relay protection remote signaling data set dsRelayDin and the maintenance quality bit in the SV message and the GOOSE message acquired by the network message function;
if the state of the maintenance pressing plate is consistent with the maintenance quality bits in the SV message and the GOOSE message, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal;
step 4.10, the inspection of time synchronization inspection is carried out, and the inspection method comprises two modes:
if the inspection of time synchronization inspection is carried out through MMS model service, the time synchronization abnormal signal of the relay protection device is obtained in the automatic inspection period T1,
if the time synchronization abnormal signal state is 0, the automatic inspection result is normal; when the time setting abnormal signal state is 1, the automatic inspection result is abnormal;
if the time of the relay protection device is obtained according to the SNTP service of the intelligent recorder system, comparing the time difference between the system time of the intelligent recorder and the time of the relay protection device,
if the time difference is larger than the time threshold value, the automatic inspection result is abnormal; and if the time difference is less than or equal to the time threshold value, the automatic inspection result is normal.
Step 4.11, carrying out the whole group transmission inspection, acquiring MMS messages and GOOSE messages through MMS model service, checking whether relay protection action exists in the automatic inspection period T1,
if the relay protection action exists in the automatic inspection period T1, comparing the MMS message and the GOOSE message with the set relay protection whole group action template according to the message items and the time sequence according to the collected MMS message and the collected GOOSE message, and if the comparison is inconsistent, judging that the automatic inspection result is abnormal; and if the comparison is consistent, the automatic inspection result is normal.
If no relay protection action exists in the automatic inspection period T1, the automatic inspection result is no result;
and 4.12, performing failure and associated loop detection, comprising the following steps:
judging whether the start failure GOOSE information of the protection device is sent out or not, whether the failure start GOOSE signal of the associated protection device is correctly received or not,
if the protection device fails to send out the start-up GOOSE signal, or the associated protection device fails to receive the start-in GOOSE signal in a wrong way, the automatic routing inspection result is abnormal; if the protection device starts sending out a failure GOOSE signal, and the related protection device failure open GOOSE signal is received and is correct, the automatic polling result is normal.
A multi-system-fused intelligent substation relay protection dynamic scheduled inspection method further comprises the steps of automatic inspection ending and automatic production of automatic inspection reports.
Compared with the prior art, the invention has the following distinguishing technical characteristics:
1. if the inspection items are correctly operated and the automatic inspection result is normal within the automatic fixed inspection period T2 and before the early warning period T3, the relay protection device can completely stop fixed inspection without stopping operation, and the fixed inspection period is delayed;
2. the non-stop transmission in the automatic fixed inspection period T2 and before the early warning period T3 is entered is supported, the whole group of protection and the corresponding input and output amount are inspected, and the non-stop inspection of the corresponding project is not needed;
3. if the automatic inspection result of the still inspection items is no result within the automatic regular inspection period T2 and before the early warning period T3, the operation is stopped for regular inspection when the inspection items enter the early warning period T3, and the inspection items which are not operated can be only inspected according to the inspection items, so that the number of the regular inspection items can be compressed to the minimum, the power failure time is shortened, and the workload of the regular inspection is reduced;
4. automatic inspection is realized, the inspection result is more objective and credible, and the inspection report is automatically generated.
Drawings
FIG. 1 is a frame of a 220KV intelligent recorder system;
FIG. 2 is a flow chart of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples for the purpose of facilitating understanding and practice of the invention by those of ordinary skill in the art, and it is to be understood that the present invention has been described in the illustrative embodiments and is not to be construed as limited thereto.
Fig. 1 is a frame of a 220kV intelligent recorder system. A multi-system-fused intelligent substation relay protection dynamic scheduled inspection method is based on an intelligent oscillograph system. The intelligent oscillograph system comprises an intelligent oscillograph management unit, an intelligent oscillograph acquisition unit and a switch. The acquisition unit of the intelligent recorder acquires process layer analog quantity or digital quantity SV, double-set configuration protection is carried out on 220kV voltage level, a process layer network is distributed according to A, B networks, and meanwhile, the A, B network is dualized according to 1 and 2 networks; the intelligent recorder management unit is accessed to a station control layer MMS network (C1 network, C2 network), the intelligent recorder management unit comprises a relay protection online monitoring module and a recording and network branch management module, and the switch is connected with the management unit and the acquisition unit to exchange data.
A multi-system-fused intelligent substation relay protection dynamic scheduled inspection method achieves the automatic scheduled inspection effect of relay protection equipment through information acquisition. The scheduled examination items include the following: software version inspection, inverter power supply inspection, precision dynamic definite inspection, zero drift dynamic definite inspection, functional pressure plate/definite value control word inspection, whole set of transmission inspection, failure and associated loop inspection, GOOSE open-in inspection, GOOSE open-out inspection, time synchronization inspection, signal and wave recording loop inspection and operation maintenance state inspection.
As shown in fig. 2, a multi-system-fused dynamic scheduled inspection method for relay protection of an intelligent substation includes the following steps:
step 1, three periods are set, wherein one period is an automatic inspection period T1, the other period is an automatic scheduled inspection period T2, the other period is an early warning period T3, the early warning period T3 is in the automatic scheduled inspection period T2 and is located in the last time period of the automatic scheduled inspection period T2, and the automatic inspection period T1 is set in the automatic scheduled inspection period T2 except the time period of the early warning period T3. The automatic inspection period T1, the automatic scheduled inspection period T2 and the early warning period T3 can be set as required, the automatic inspection period T1 is generally set to one day, the automatic scheduled inspection period T2 is generally set to three years according to relay protection professional specifications, and the early warning period T3 is generally set to 3 months.
Step 2, setting automatic polling items and scheduled inspection items, wherein the automatic polling items and the scheduled inspection items are consistent with the inspection items, initializing scheduled inspection counting time of each inspection item as initial timing time, the scheduled inspection counting time is in days,
in the present embodiment, the fixed-examination count is counted in a reverse narrative manner, i.e., the initial timed-out time is the automatic fixed-examination period T2, and the fixed-examination count time is decremented each day without resetting the fixed-examination count time to the initial timed-out time. The reset count time is divided into an automatic reset and a manual reset.
The inspection items comprise software version inspection, inverter inspection, precision dynamic inspection, null shift dynamic inspection, functional press plate inspection, constant value control word inspection, whole set of transmission inspection, failure and associated loop inspection, GOOSE input inspection, GOOSE output inspection, time synchronization inspection and operation maintenance state inspection.
And 3, setting an automatic inspection result judgment basis. The automatic inspection result judgment basis comprises the following three judgment bases:
and 3.1, obtaining a relay protection reference template. The relay protection reference template comprises a pressure plate template, a fixed value and control word template, a software version-downloading time-CRC (cyclic redundancy check) code template and a GOOSE open state template. The templates can be obtained through relay protection MMS model service.
And 3.2, setting a threshold value of the inspection item. The inspection item threshold values include a high out-of-limit threshold value, a low out-of-limit threshold value, a null shift analog quantity threshold value, a frequency threshold value, a time threshold value and the like.
And 3.3, setting a relay protection whole group action template, wherein the relay protection whole group action template consists of a group of relay protection actions MMS and GOOSE event sequences.
Step 4, automatically inspecting each inspection item according to the automatic inspection period T1 to obtain a corresponding automatic inspection result, which specifically includes:
step 4.1, software version checking is carried out, and the method comprises the following steps: and acquiring the software version, the software generation time and the CRC code of the relay protection device in an automatic inspection period T1 through MMS model service, comparing the software version, the software generation time and the CRC code with the software version, the software generation time and the CRC code in a software version-downloading time-CRC code template, and if the comparison is consistent, the automatic inspection result is normal, and if the comparison is inconsistent, the automatic inspection result is abnormal.
The software version acquisition addresses are IEDNAME/LD0/LPHD1/DC/PhyNam/swRev and IEDNAME/PROT/LPHD1/DC/PhyNam/swRev respectively.
After the relay protection device is put into operation formally, the version of the software, the software generation time and the CRC code can be called through MMS service and then stored.
And 4.2, carrying out inverter power supply inspection, comprising the following steps: through MMS model service, acquiring working voltage of the relay protection device dsAin data centralized relay protection device in an automatic inspection period T1, and if the working voltage of the relay protection device is less than or equal to a high out-of-limit threshold value and more than or equal to a low out-of-limit threshold value, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal.
The inverter power supply voltage represents the hardware working condition of the relay protection device, and may be multiple groups, such as +24V, +12V, -12V, +10V, +5V, +3.3V, each group of voltage has a high out-of-limit threshold value and a low out-of-limit threshold value.
And 4.3, performing dynamic precision inspection, wherein the dynamic precision inspection comprises steady-state precision inspection and transient precision inspection.
Step 4.3.1, the steady-state precision test comprises the following steps: in an automatic routing inspection period T1, comparing the steady-state analog quantity effective value recorded by the intelligent substation by using the intelligent recorder system and the MMS analog quantity effective value in the relay protection telemetry data set dsRelayAin, wherein the difference value between the steady-state analog quantity effective value and the MMS analog quantity effective value of the SV accessed intelligent substation is a steady-state analog quantity difference value,
if the steady-state analog quantity difference value is within the set steady-state precision threshold difference value range, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal.
Step 4.3.2, the transient precision test comprises the following steps: after primary relay protection action is compared, obtaining a difference value between the effective value of the transient analog quantity of the relay protection recording and the effective value of the transient analog quantity of the intelligent recorder recording, recording the difference value as the transient analog quantity difference value, and also obtaining switching value change data of the relay protection recording and switching value change data of the intelligent recorder recording;
if the transient analog quantity difference value is within the set transient precision threshold difference value range, and the switching value variation data of the relay protection wave recording is consistent with the switching value variation data of the intelligent wave recorder wave recording, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal.
And 4.4, performing zero drift dynamic inspection, comprising the following steps of: the position state of a breaker in a GOOSE message is acquired through an intelligent wave recorder system, when the position of the breaker or the position of an isolation knife switch is a branch position, the difference value between an effective value of an analog quantity (SV effective value or analog quantity voltage and current) acquired by the intelligent wave recorder and the effective value of the analog quantity corresponding to a relay protection dsRelayAin data set is acquired and recorded as a zero drift analog quantity difference value,
if the zero drift analog quantity difference value does not exceed the zero drift analog quantity threshold value range, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal.
Step 4.5, performing functional pressure plate inspection, including the following steps of obtaining the pressure plate state in the relay protection pressure plate data set dsRelayEna in an automatic inspection period T1 through MMS model service,
comparing the pressing plate state in the relay protection pressing plate data set dsRelayEna with the pressing plate template, and if the comparison is consistent, automatically checking that the result is normal; and comparing the inconsistent automatic inspection results to be abnormal.
And 4.6, carrying out constant value control word inspection, comprising the following steps: through MMS model service, constant value control words in a relay protection constant value data set dsSetting are obtained in an automatic inspection period T1,
comparing the constant value control word in the relay protection constant value data set dsSetting with the constant value and control word template, and if the comparison is consistent, automatically checking that the result is normal; and if the results are inconsistent, the automatic inspection result is abnormal.
Step 4.7, carrying out GOOSE import inspection, comprising the following steps:
GOOSE open test includes the following steps: through MMS model service, the GOOSE open state of the relay protection remote signaling data set dsRelayDin is obtained in the automatic inspection period T1,
if the GOOSE open state in the automatic inspection period T1 changes, comparing the GOOSE open state with the GOOSE open state template, if the comparison is consistent, the automatic inspection result is normal, and if the comparison is inconsistent, the automatic inspection result is abnormal.
Step 4.8, carrying out GOOSE export test, comprising the following steps:
for GOOSE output passing through the switch, acquiring GOOSE messages through a network message recording function of the intelligent recorder to directly acquire GOOSE output change;
and for the GOOSE output of the relay protection direct tripping, acquiring a GOOSE output inverse correction message sent by the intelligent terminal, and indirectly acquiring the GOOSE output change.
If the GOOSE output in the automatic inspection period T1 changes and the change frequency is less than or equal to the set frequency threshold, the automatic inspection result is normal; the GOOSE output is changed, and the change frequency is greater than the frequency threshold value, the automatic polling result is abnormal.
For example, if the frequency threshold is set to change three times in 1 minute, the change is normal if the change is not more than three times in 1 minute, and the change is abnormal if the change is more than three times.
And 4.9, checking the operation maintenance state for inspection, comprehensively judging whether operation/maintenance switching exists or not by acquiring the maintenance pressing plate state in the relay protection remote signaling data set dsRelayDin and the maintenance quality bits in the SV message and the GOOSE message acquired by the network message function, and judging whether the maintenance quality bits in the SV message and the GOOSE message after the operation/maintenance switching are in corresponding states or not.
If the state of the repair hard pressing plate in dsRelayDin is 1, which is obtained through an MMS model, the repair quality bit in SV message and GOOSE message which are acquired through the network message function should be the repair, namely the quality bit of SV is 0800, and the test bit of GOOSE is True; if the state of the repair hard pressing plate in dsRelayDin is 0, which is obtained through MMS model service, the SV message and the repair quality bit in the GOOSE message, which are acquired through the network message function, should be running, that is, the quality bit of SV is 0000, and the test bit of GOOSE is False.
If the state of the maintenance pressing plate is consistent with the SV and GOOSE maintenance quality level, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal.
Step 4.10, the inspection of time synchronization inspection is carried out, and the inspection method comprises two modes:
the first is that through MMS model service, the time setting abnormal signal of the relay protection device is obtained in the automatic inspection period T1,
if the time synchronization abnormal signal state is 0, the automatic inspection result is normal; and if the time setting abnormal signal state is 1, the automatic inspection result is abnormal.
The second one is to obtain the time of the relay protection device according to the SNTP service of the intelligent wave recorder system, then compare the time difference between the system time of the intelligent wave recorder and the time of the relay protection device,
if the time difference is larger than the time threshold value, the automatic inspection result is abnormal; and if the time difference is less than or equal to the time threshold value, the automatic inspection result is normal.
And 4.11, carrying out whole group of transmission inspection, comprising the following steps: and acquiring MMS messages and GOOSE messages through MMS model service, and checking whether relay protection action exists in the automatic inspection period T1.
If the relay protection action exists in the automatic inspection period T1, comparing the MMS message and the GOOSE message with the set relay protection whole group action template according to the message items and the time sequence according to the collected MMS message and the collected GOOSE message, and if the comparison is inconsistent, judging that the automatic inspection result is abnormal; and if the comparison is consistent, the automatic inspection result is normal.
If the relay protection action does not exist in the automatic inspection period T1, the automatic inspection result is no result.
The relay protection whole group action template consists of a group of associated event information according to a certain time sequence, for example, the A phase grounding fault line protection action template is as follows:
protection start (MMS) - > protection action (MMS) - > trip breaker a phase (GOOSE/MMS) - > trip protection a phase failure (GOOSE) - > bus protection start a phase failure open (MMS) - > breaker position a tap (GOOSE/MMS) - > intelligent terminal a phase trip inverse correction (GOOSE) - > intelligent terminal a phase trip recovery (GOOSE) - > reclosing action (GOOSE/MMS) - > trip breaker A, B, C phase (GOOSE/MMS) - > trip protection A, B, C phase failure (GOOSE) - > bus protection start A, B, C phase failure open (MMS) - > breaker A, B, C phase position tap (GOOSE/MMS) - > intelligent terminal A, B, C phase trip inverse correction (GOOSE) - > intelligent terminal A, B, C-phase trip extraction (GOOSE).
The GOOSE message is sent to the intelligent terminal by the protection device or sent to the protection device or the intelligent recorder acquisition unit by the intelligent terminal, and the GOOSE/MMS indicates that the two messages are generated simultaneously.
And 4.12, performing failure and associated loop detection, comprising the following steps:
judging whether the start failure GOOSE information of the protection device is sent out or not, whether the failure open GOOSE signal of the associated protection device is correctly received or not, judging through the failure open GOOSE signal corresponding to a relay protection telecommand data set dsRelayDin of the associated protection device,
if the protection device fails to send out the start-up GOOSE signal, or the associated protection device fails to receive the start-in GOOSE signal in a wrong way, the automatic routing inspection result is abnormal; if the protection device starts sending out a failure GOOSE signal, and the related protection device failure open GOOSE signal is received and is correct, the automatic polling result is normal.
If the line protection trips, whether the line protection startup failure GOOSE is sent or not and whether the bus protection startup failure signal is received or not are judged by receiving the GOOSE message, and whether the bus protection remote signaling dsRelayDin data set startup failure MMS message is correctly sent or not is judged.
And 4.13, when the scheduled inspection counting time of the inspection item is within the automatic scheduled inspection period T2 but does not enter the early warning period T3 (for example, the last three months):
if the automatic inspection result is normal, resetting the regular inspection counting time of the inspection item to be the initial timing time and timing again;
if the automatic inspection result is abnormal, resetting the regular inspection counting time of the inspection item to enter an early warning period T3, confirming the automatic inspection result, eliminating the abnormal condition, resetting the regular inspection counting time of the inspection item to be initial timing time, and timing again;
and the regular inspection counting time of the inspection project is within the automatic regular inspection period T2 and before entering the early warning period T3, when the automatic inspection result is no result, the regular inspection counting time of the inspection project enters the early warning period T3, then the manual inspection of the inspection project is carried out, the regular inspection counting time of the inspection project is reset to be the initial timing time after the manual inspection, and the timing is restarted.
And 4.14, finishing automatic inspection, automatically producing an automatic inspection report, conveniently storing and recording, and uploading to a dispatching master station of the II area master station and an operation and maintenance master station of the III/IV area.
It should be noted that the specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (5)
1. A multi-system-fused intelligent substation relay protection dynamic scheduled inspection method is characterized by comprising the following steps:
step 1, setting an automatic inspection period T1, an automatic scheduled inspection period T2 and an early warning period T3, wherein the early warning period T3 is in the automatic scheduled inspection period T2 and is positioned at the last time period of the automatic scheduled inspection period T2, and the automatic inspection period T1 is set in the automatic scheduled inspection period T2 except the time period of the early warning period T3;
step 2, setting automatic inspection items and scheduled inspection items, wherein the automatic inspection items and the scheduled inspection items are consistent with the inspection items, and initializing scheduled inspection counting time of each inspection item as initial timing time;
step 3, acquiring a relay protection reference template, setting a threshold value of a test item, and setting a relay protection whole group action template;
step 4, automatically inspecting each inspection item in the automatic inspection period T1 to obtain the corresponding automatic inspection result,
the scheduled inspection counting time of the inspection items is within the automatic scheduled inspection period T2, but the early warning period T3 is not entered:
if the automatic inspection result is normal, resetting the regular inspection counting time of the inspection item to be the initial timing time and timing again;
if the automatic inspection result is abnormal, resetting the regular inspection counting time of the inspection item to enter an early warning period T3, confirming the automatic inspection result, eliminating the abnormal condition, resetting the regular inspection counting time of the inspection item to be initial timing time, and timing again;
and the regular inspection counting time of the inspection project is within the automatic regular inspection period T2 and before entering the early warning period T3, when the automatic inspection result is no result, the regular inspection counting time of the inspection project enters the early warning period T3, then the manual inspection of the inspection project is carried out, the regular inspection counting time of the inspection project is reset to be the initial timing time after the manual inspection, and the timing is restarted.
2. The dynamic calibration method for the relay protection of the multi-system-fused intelligent substation according to claim 1, wherein the inspection items comprise software version inspection, inverter inspection, precision dynamic inspection, zero drift dynamic inspection, functional press plate inspection, constant value control word inspection, whole group transmission inspection, failure and associated loop inspection, GOOSE open-in inspection, GOOSE open-out inspection, time synchronization inspection and operation maintenance state inspection.
3. The multi-system-fused intelligent substation relay protection dynamic scheduled inspection method according to claim 2, wherein the relay protection reference template comprises a pressure plate template, a fixed value and control word template, a software version-downloading time-CRC code template and a GOOSE open state template;
the threshold values of the inspection items comprise a high out-of-limit threshold value, a low out-of-limit threshold value, a zero drift analog quantity threshold value, a frequency threshold value and a time threshold value.
4. The multi-system-fused intelligent substation relay protection dynamic scheduled inspection method according to claim 3, wherein the automatic inspection cycle T1 is used for automatically inspecting each inspection item, and obtaining the corresponding automatic inspection result comprises the following steps:
step 4.1, software version checking is carried out, and the method comprises the following steps: acquiring a software version, software generation time and a CRC code of the relay protection device in an automatic inspection period T1 through MMS model service, comparing the software version, the software generation time and the CRC code with the software version, the software generation time and the CRC code in a software version-downloading time-CRC code template, and if the comparison is consistent, the automatic inspection result is normal, and if the comparison is inconsistent, the automatic inspection result is abnormal;
and 4.2, carrying out inverter power supply inspection, comprising the following steps: through MMS model service, acquiring working voltage of the relay protection device dsAin data centralized relay protection device in an automatic inspection period T1, and if the working voltage of the relay protection device is less than or equal to a high out-of-limit threshold value and more than or equal to a low out-of-limit threshold value, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal;
step 4.3, performing dynamic precision inspection, wherein the dynamic precision inspection comprises steady-state precision inspection and transient precision inspection,
step 4.3.1, the steady-state precision test comprises the following steps: in an automatic routing inspection period T1, comparing the steady-state analog quantity effective value recorded by the intelligent substation by using the intelligent recorder system and the MMS analog quantity effective value in the relay protection telemetry data set dsRelayAin, wherein the difference value between the steady-state analog quantity effective value and the MMS analog quantity effective value of the SV accessed intelligent substation is a steady-state analog quantity difference value,
if the steady-state analog quantity difference value is within the set steady-state precision threshold difference value range, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal;
step 4.3.2, the transient precision test comprises the following steps: after primary relay protection action is compared, obtaining a difference value between the effective value of the transient analog quantity of the relay protection recording and the effective value of the transient analog quantity of the intelligent recorder recording, recording the difference value as the transient analog quantity difference value, and also obtaining switching value change data of the relay protection recording and switching value change data of the intelligent recorder recording;
if the transient analog quantity difference value is within the set transient precision threshold difference value range, and the switching value variation data of the relay protection wave recording is consistent with the switching value variation data of the intelligent wave recorder wave recording, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal;
and 4.4, performing zero drift dynamic inspection, comprising the following steps of: acquiring the position state of a breaker in a GOOSE message through an intelligent wave recorder system, acquiring the difference value of an analog quantity effective value acquired by the intelligent wave recorder and an analog quantity effective value corresponding to a relay protection dsRelayAin data set when the position of the breaker or the position of an isolation knife switch is a branch position, recording as a null shift analog quantity difference value,
if the zero drift analog quantity difference value does not exceed the zero drift analog quantity threshold value range, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal;
step 4.5, performing functional pressure plate inspection, including the following steps of obtaining the pressure plate state in the relay protection pressure plate data set dsRelayEna in an automatic inspection period T1 through MMS model service,
comparing the pressing plate state in the relay protection pressing plate data set dsRelayEna with the pressing plate template, and if the comparison is consistent, automatically checking that the result is normal; comparing the inconsistent automatic inspection results to be abnormal;
and 4.6, carrying out constant value control word inspection, comprising the following steps: through MMS model service, constant value control words in a relay protection constant value data set dsSetting are obtained in an automatic inspection period T1,
comparing the constant value control word in the relay protection constant value data set dsSetting with the constant value and control word template, and if the comparison is consistent, automatically checking that the result is normal; if the results are inconsistent, the automatic inspection result is abnormal;
step 4.7, carrying out GOOSE import inspection, comprising the following steps:
GOOSE open test includes the following steps: through MMS model service, the GOOSE open state of the relay protection remote signaling data set dsRelayDin is obtained in the automatic inspection period T1,
if the GOOSE open state in the automatic inspection period T1 changes, comparing the GOOSE open state with the GOOSE open state template, if the comparison is consistent, the automatic inspection result is normal, and if the comparison is inconsistent, the automatic inspection result is abnormal;
step 4.8, carrying out GOOSE export test, comprising the following steps:
for GOOSE output passing through the switch, acquiring GOOSE messages through a network message recording function of the intelligent recorder to directly acquire GOOSE output change;
for the GOOSE output of the relay protection direct tripping, acquiring a GOOSE output inverse correction message sent by the intelligent terminal, and indirectly acquiring the GOOSE output change;
if the GOOSE output in the automatic inspection period T1 changes and the change frequency is less than or equal to the set frequency threshold, the automatic inspection result is normal; the GOOSE output is changed, and the change frequency is greater than the frequency threshold value, the automatic inspection result is abnormal;
4.9, checking the operation maintenance state for polling, and acquiring the maintenance pressure plate state in a relay protection remote signaling data set dsRelayDin and the maintenance quality bit in the SV message and the GOOSE message acquired by the network message function;
if the state of the maintenance pressing plate is consistent with the maintenance quality bits in the SV message and the GOOSE message, the automatic inspection result is normal; otherwise, the automatic inspection result is abnormal;
step 4.10, the inspection of time synchronization inspection is carried out, and the inspection method comprises two modes:
if the inspection of time synchronization inspection is carried out through MMS model service, the time synchronization abnormal signal of the relay protection device is obtained in the automatic inspection period T1,
if the time synchronization abnormal signal state is 0, the automatic inspection result is normal; when the time setting abnormal signal state is 1, the automatic inspection result is abnormal;
if the time of the relay protection device is obtained according to the SNTP service of the intelligent recorder system, comparing the time difference between the system time of the intelligent recorder and the time of the relay protection device,
if the time difference is larger than the time threshold value, the automatic inspection result is abnormal; if the time difference is less than or equal to the time threshold value, the automatic inspection result is normal;
step 4.11, carrying out the whole group transmission inspection, acquiring MMS messages and GOOSE messages through MMS model service, checking whether relay protection action exists in the automatic inspection period T1,
if the relay protection action exists in the automatic inspection period T1, comparing the MMS message and the GOOSE message with the set relay protection whole group action template according to the message items and the time sequence according to the collected MMS message and the collected GOOSE message, and if the comparison is inconsistent, judging that the automatic inspection result is abnormal; if the comparison is consistent, the automatic inspection result is normal;
if no relay protection action exists in the automatic inspection period T1, the automatic inspection result is no result;
and 4.12, performing failure and associated loop detection, comprising the following steps:
judging whether the start failure GOOSE information of the protection device is sent out or not, whether the failure start GOOSE signal of the associated protection device is correctly received or not,
if the protection device fails to send out the start-up GOOSE signal, or the associated protection device fails to receive the start-in GOOSE signal in a wrong way, the automatic routing inspection result is abnormal; if the protection device starts sending out a failure GOOSE signal, and the related protection device failure open GOOSE signal is received and is correct, the automatic polling result is normal.
5. The multi-system-fused intelligent substation relay protection dynamic scheduled inspection method according to claim 4, characterized by further comprising the step of automatically producing an automatic inspection report after the automatic inspection is finished.
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