CN112152314B - Centralized monitoring transformer substation risk identification early warning system and working method thereof - Google Patents
Centralized monitoring transformer substation risk identification early warning system and working method thereof Download PDFInfo
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- 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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- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
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Abstract
The invention discloses a risk identification and early warning system for a centralized monitoring transformer substation and a working method thereof, and relates to the field of electric power operation and maintenance. The traditional monitoring means is difficult to realize effective management and control on three monitoring risks of equipment defects, normally bright words and suppression signals. The risk identification early warning system for the centralized monitoring transformer substation synchronously acquires data of a master station and a station server, performs statistical analysis, calculation, verification and special analysis on the data including equipment defects, normally bright light words and inhibition signals, and generates intelligent risk identification results and corresponding risk lists based on a centralized monitoring risk library; and inform corresponding on-site operation and maintenance units and automatic operation and maintenance personnel to dispose according to the safe risk level, so that the timely control of equipment defects, normally bright words and suppression signals is realized. According to the technical scheme, the risk online control rate is improved, the risk control time limit is shortened, and the power grid monitoring risk control level is improved.
Description
Technical Field
The invention relates to the field of electric power operation and maintenance, in particular to a risk identification and early warning system for a centralized monitoring transformer substation.
Background
The centralized monitoring daily work is mainly responsible for handling information such as accidents, abnormity, out-of-limit and displacement and the like sent by a monitoring system, monitoring the operation condition of a transformer substation and ensuring the safe and stable operation of a power grid. The main components that are prone to centralized monitoring risk include device defects, normally bright words, and suppressed signals. The traditional monitoring means is difficult to realize effective management and control on the three types of monitoring risks.
1.1 monitoring risks arising from classes of defects in the apparatus
Because the power grid equipment has errors which deviate and exceed the allowable range of the operation standard in the operation process, the equipment can be damaged by untimely treatment, and serious people can also cause personal danger. Different defect types correspond to different defect elimination time limit requirements, and after the defects are reported, the power grid equipment cannot be effectively monitored when the defects are not eliminated in the first time, so that unpredictable monitoring risks are caused.
1.2 normally bright words cause monitoring risks
The field equipment needs to be replaced and maintained, and spare parts cannot be provided at the first time; the automatic defects cannot be eliminated in the first time; the frequent action of the field light words, the manual disconnection of the connecting terminal and the like can cause the generation of the normally bright light words. These normally lit words can cause a monitor to lose effective monitoring of the field device, and can cause a certain monitoring risk if the monitoring duty is not handed over.
1.3 suppressing Signal class induced monitoring Risk
The optical characters act frequently, and monitoring responsibility transfer is handled after single-point inhibition; the field device is in the maintenance state, and the control personnel hangs the maintenance and puts the tablet, restraines the maintenance interval, prevents that the field from overhauing the frequent monitoring window of equipment signal, has produced the suppression signal from this. After the field maintenance work is finished, the field fails to check the equipment state with a monitor in time and returns the monitoring right, so that the optical word is still in a suppression state, the field equipment loses effective monitoring, and serious monitoring risks are caused.
In order to effectively identify risk sources such as equipment defects, normally bright words, suppression signals and the like and effectively check the risk sources, the main measures currently taken are to establish an alarm information suppression list and analyze centralized monitoring information through investigation and discovery.
1 alarm information suppression list: and (3) transferring the monitoring right to the site by adopting an alarm suppression mode for the abnormal optical words which cannot be reset or intervals of frequent alarm signals, recording the monitoring right in an alarm information suppression list, and performing rechecking and inspection every time shift is carried out, thereby achieving the effect of eliminating the monitoring risk.
2, centralized monitoring information analysis: and collecting, inquiring and specially analyzing the historical monitoring logs to form a daily analysis report, a weekly analysis report and a special analysis report, so that the abnormal operation condition of the equipment can be quickly known, and the potential risk of the operation of the power grid can be identified.
3, the problem exists.
3.1 the alarm information suppression list can only effectively control suppression signals, early warning blind areas exist for defect signals and normally bright words, the suppression list is checked to be one shift time, namely 8 hours, and the control time limit is long.
3.2, although the centralized monitoring information analysis can effectively identify three types of risk sources, the management and control time limit is generally one week of analysis report, that is, 7 days, and the risk management and control time limit is too long, so that a large safety risk exists.
3.3 the risk online control rate is not high. Monitoring signal statistics based on power grid monitoring for 2019 in 1-6 months shows that: the monitoring risks caused by equipment defects, normally bright words and suppression signals respectively account for 8.99%, 4% and 7.03%, the monitoring risk of normal control under the traditional monitoring risk control means is only 79.98%, and the risk online control rate is not high.
In order to solve the problems, a power grid signal monitoring risk early warning system is designed by utilizing a hardware architecture and software programming in a power grid signal monitoring risk early warning system based on regulation and control integration, but the monitoring parameters are single, and the power grid signal monitoring risk early warning system does not have certain reliability and popularization.
Disclosure of Invention
The invention aims to solve the technical problems and provide a technical task for improving and improving the prior technical scheme and providing a risk identification and early warning system for a centralized monitoring transformer substation and a working method thereof, so as to improve the online risk control rate, shorten the risk control time limit and improve the risk control level of power grid monitoring. Therefore, the invention adopts the following technical scheme.
A risk identification and early warning system for a centralized monitoring transformer substation is arranged in a region III, the centralized monitoring transformer substation risk identification and early warning system is isolated from a region I provided with a master station and a station server through a firewall, the centralized monitoring transformer substation risk identification and early warning system synchronously acquires data of the master station and the station server, performs statistical analysis, calculation, verification and special analysis on the data comprising equipment defects, normally bright characters and inhibition signals, and generates intelligent risk identification results and corresponding risk lists based on a centralized monitoring risk library; and inform corresponding on-site operation and maintenance units and automatic operation and maintenance personnel to dispose according to the safety risk level, so that the timely management and control of equipment defects, normally bright words and suppression signals are realized. The monitoring risk early warning system can be developed based on a regulation cloud platform; through disposing the safe risk in time, greatly promoted the speed that the risk was discerned and shortened the time that the risk was told.
According to the technical scheme, a centralized monitoring risk library is created, a risk management and control flow is established, risk identification rules are established, a centralized monitoring risk early warning system is developed, the online risk management and control rate is improved, the risk management and control time limit is shortened, and the power grid monitoring risk management and control level is improved.
As a preferable technical means: the risk identification early warning system for the centralized monitoring transformer substation comprises:
the depth inspection module is used for retrieving frequent analysis, plate placing inconsistency and signal inhibition inspection based on a set alarm window information threshold value and the collection, storage, calculation and study and judgment of main station automation data, and generating corresponding risk information;
the risk intelligent identification module is used for analyzing and judging the risk information generated by the depth inspection module at regular time to generate risk early warning content;
the risk list intelligent generation module supports intelligent identification risk list compilation and manual identification risk list compilation according to the compilation requirements of the set risk early warning list and the set risk notification list; the risk list intelligent generation module automatically generates a risk list number meeting the requirement and a corresponding risk list in a word format according to the safety risk judged by the set centralized monitoring risk library, and finishes the compilation of the intelligent risk list; when the centralized monitoring risk library has no corresponding judgment information and can not judge the safety risk, the risk list type, the risk level, the release type and the risk content are definitely filled, and then are stored and submitted, or the artificial identification risk list is generated and downloaded for storage;
and the risk process intelligent control module acquires the information of the risk list, realizes the whole-process electronic closed-loop control of centralized monitoring risk compilation, audit, evaluation, release, control and release by tracking the risk list, and realizes the dynamic tracking management of the risk control measure implementation situation, the risk development situation and the risk elimination situation.
As a preferable technical means: the depth patrol module comprises:
the frequent analysis retrieval submodule is used for screening out risk information of the transformer substation which comprises whole station information frequent, protection information frequent, switch information frequent, disconnecting link information frequent and no information;
the card placing non-corresponding retrieval submodule is used for realizing retrieval and identification of the equipment state and the card hanging record which are not consistent, the defect card and the defect record which are not consistent, the window-entering warning information and the light word card state which are not consistent and the warning content and the card placing content which are not consistent;
and the inhibition signal patrol retrieval submodule is used for retrieving risk information of remote signaling blockade, remote measuring blockade, single-point inhibition, interval inhibition, station inhibition and screen refreshing inhibition.
As a preferable technical means: risk process intelligence management and control module includes:
the risk early warning sub-module is added, a risk notice form is selected to be compiled according to the influence of the risk on the safe operation of the power grid and equipment, and the risk occurrence time, the risk level, the release type, the risk content and the risk analysis are filled in the risk notice form;
generating a risk release sub-module, acquiring a risk notice and initiating a risk release process;
the risk early warning undertaking submodule generates a risk issuing flow containing a specific number and issues a risk notice to each risk undertaking center, comprises a power dispatching control center, a transportation inspection part, an operation part and a security supervision part, monitors the risk processing dynamics in real time and uploads the latest risk processing result;
and the risk processing result submodule is used for checking the risk products so as to solve the problem.
As a preferable technical means: the risk online analysis, intelligent research and judgment and risk alarm are realized according to the established centralized monitoring risk library through data import and parameter modification.
As a preferable technical means: the risk identification early warning system of the centralized monitoring transformer substation periodically identifies risks according to the content of each risk in the centralized monitoring risk library, and realizes the standardization of risk identification; the centralized monitoring risk library is constructed according to multiple dimensions including power supply and power supply balance, equipment load rate, system operation margin, main equipment health degree and centralized monitoring function completeness around monitoring alarm information, equipment measurement data, power grid event information and equipment ledgers; the centralized monitoring risk library comprises a plurality of risk requirement elements which are respectively risk content, risk level, release mode, release object, management and control measure, person identification and identification period, for each risk content, the detailed content of each element is determined in the risk library, the requirements of different risk management and control of power supply characteristics, net rack characteristics and load characteristics of different city companies are met, and guidance and support are provided for various identification personnel to carry out monitoring risk identification work according to specifications.
As a preferable technical means: the centralized monitoring risk library dynamically changes to continuously improve the breadth and depth of centralized monitoring risks and continuously expand the content of the risk library, including risk analysis and mining in eight aspects;
first, the daily, weekly and monthly maintenance planning work,
secondly, the reactive power balance of the regional power grid,
thirdly, the control condition of the reactive voltage control system,
fourthly, the heavy load condition of the equipment, the leaving condition of important defects and the abnormal operation condition,
fifthly, important information is missed, mistakenly sent and frequently sent,
sixthly, the problems of channel abnormality and equipment defects in remote operation,
seventhly, the problem that the centralized monitoring is influenced by the abnormal operation of the master station system,
eighthly, the problem that the centralized monitoring is influenced by the abnormal operation of the monitoring auxiliary system;
auditing professional personnel who regularly organize safety supervision, operation and inspection and marketing of newly added monitoring risk contents, and adding the approved risk contents into a monitoring risk library; meanwhile, in order to continuously improve the accuracy and the feasibility of the risk content, the historical risk content, the management and control measures and the like are revised and perfected regularly.
The centralized monitoring risk coverage is wide, the concealment is strong, the promotion of the risk identification efficiency is restricted by a large amount of data analysis and limited human resources, and the problems of large workload, easy omission, low efficiency and the like exist in the process of identifying the risk through manual work. Through summarizing historical monitoring information and hidden danger mining experience, centralized monitoring risk knowledge rules are refined, a typical monitoring risk rule base is established, centralized monitoring risk intelligent identification function construction is carried out in a monitoring big data system, centralized monitoring risk automatic identification is achieved, and risk identification work efficiency is remarkably improved.
And risk online analysis, intelligent research and judgment and risk alarm are realized according to the formulated risk identification rule by data import and parameter modification.
As a preferable technical means: the content stored in the centralized monitoring risk library comprises a serial number, risk content under the corresponding serial number, a risk level, a release mode, a release object, a control measure, an identifier and an identification period; the risk level options include major, general; options of the release mode include notification, focus attention and timely remediation; the options of the release object comprise safety supervision, operation and inspection, marketing, regulation and control center, and operation party, protection and automatic communication under the regulation and control center.
Centralized monitoring transformer substation risk identification and early warning method based on centralized monitoring transformer substation risk identification and early warning system is characterized in that: the risk identification early warning system of the centralized monitoring transformer substation establishes a monitoring class module, professional and manager modules of a regulation center, a branch management leader module of the regulation center, a management department module of a safety supervision department and a transportation and inspection department, and an operation, maintenance and overhaul unit module according to an object; the risk identification early warning method for the centralized monitoring transformer substation comprises the following steps:
1) and (3) risk assessment:
101) initiating risk identification by the monitoring class module;
102) forming centralized monitoring risk content; pushing the centralized monitoring risk content to each professional and manager module of the regulation center;
103) each professional and manager module of the regulation and control center judges whether risk audit occurs, and if yes, the management module is pushed to the regulation and control center branch management leader module; if not, returning to the step 102);
104) the control center branch management leader module judges whether to confirm whether to issue or not, and if so, the next step is carried out; if not, go back to step 102)
2) Risk release;
201) each professional and manager module of the regulation and control center judges whether to issue a risk early warning list, and if so, the step is skipped to the step 202); if not, go to step 203);
202) issuing a risk notification sheet, and jumping to step 204) to push the risk notification sheet to a management department module of a security supervision department and a transportation inspection department;
203) issuing a risk early warning list; and proceeds to step 205 and step 301);
204) each professional and manager module of the control center acquires treatment opinions given by corresponding professional departments; and proceeds to step 301) and step 302);
205) the management department modules of the security supervision department and the operation inspection department perform tracking management on the risk notice; after the work is finished, entering step 302);
206) the management department modules of the security supervision department and the operation and inspection department acquire treatment opinion information corresponding to the risk early warning list, and after the work is finished, the operation enters step 302);
3) managing and controlling risks;
301) the monitoring class module obtains a risk management and control measure according to the risk notice and the processing suggestion given by the professional department;
302) the operation, maintenance and overhaul unit module obtains corresponding units to carry out risk pre-control and rectification measures according to the tracking management result and the disposal suggestion; the operation and maintenance and overhaul unit carries out the work of risk pre-control and rectification measures according to the obtained corresponding unit; entering step 402 after the work is finished);
4) risk relief
401) After the risk is eliminated, the monitoring class module carries out risk archiving;
402) the management department module of the safety supervision department and the operation and inspection department judges whether the audit risk is eliminated, if so, the step 403 is carried out; if not, returning to the step 302), and regaining the risk pre-correcting measures;
403) each professional manager module of the regulation center judges whether the audit risk is eliminated, if so, the step 401) is carried out to carry out risk archiving; if not, return step 401).
According to the technical scheme, a centralized monitoring risk management and control flow is established for the discovered centralized monitoring risks, so that the centralized monitoring risk assessment is reasonable, the risk issue is accurate, the risk management and control measures are in place, and the risks are thoroughly removed.
Has the advantages that: according to the technical scheme, a centralized monitoring risk library is created, a risk management and control flow is established, risk identification rules are established, a centralized monitoring risk early warning system is developed, the online risk management and control rate is improved, the risk management and control time limit is shortened, and the power grid monitoring risk management and control level is improved.
Through the construction of the centralized monitoring risk early warning system, the intelligent identification and closed-loop control of risks are realized, the safety of the power grid, equipment and centralized monitoring operation is effectively ensured, the safety operation control level of the power grid equipment is effectively improved, the safety and stability of the power grid are strengthened and guaranteed, especially, the safety of the power grid in strong rainfall, typhoon and peak-to-peak summer periods is ensured, and the centralized monitoring risk early warning system has important significance for reducing the operation risk of the power grid, adjusting the mode, limiting the power, avoiding serious faults of the equipment, equipment damage, forced outage, ensuring reliable and continuous power supply of users and the like.
Drawings
Fig. 1 is a block diagram of the present invention.
FIG. 2 is a schematic flow diagram of the present invention.
Fig. 3 is a first interface diagram of the present invention.
Fig. 4 is a second interface diagram of the present invention.
Fig. 5 is a third interface diagram of the present invention.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
As shown in fig. 1, the centralized monitoring substation risk identification and early warning system is deployed in a region III, and is isolated from a region I provided with a master station and a station server by a firewall, the centralized monitoring substation risk identification and early warning system synchronously acquires data of the master station and the station server, performs statistical analysis, calculation, verification and special analysis on data including equipment defects, normally bright words and suppression signals, and generates an intelligent risk identification result and a corresponding risk list based on a centralized monitoring risk library; and inform corresponding on-site operation and maintenance units and automatic operation and maintenance personnel to dispose according to the safe risk level, so that the timely control of equipment defects, normally bright words and suppression signals is realized.
The following describes some of the present invention details with respect to the establishment of the system:
monitoring risk library in building
By establishing a centralized monitoring risk library, risk identification is regularly carried out according to each risk content in the library, and the standardized development of the risk identification is realized. And surrounding the monitoring of the contents such as alarm information, equipment measurement data, power grid event information, equipment ledgers and the like, according to the dimensions such as power supply and power balance, equipment load rate, system operation margin, main equipment health degree, centralized monitoring function completeness and the like, the centralized monitoring risk library comprises risk contents, risk levels, issuing modes, issuing objects, control measures, person identification, identification periods and other risk elements. For each risk content, the detailed content of each element is determined in the risk library, the requirements of different risk control such as power supply characteristics, net rack characteristics and load characteristics of different city companies are met, and guidance and support are provided for various identification personnel to carry out monitoring risk identification work according to specifications.
Centralized monitoring risk library
Secondly, establishing a risk base expansion and rolling repair knitting machine system
In order to continuously improve the breadth and the depth of centralized monitoring risks, the content of a risk library is continuously expanded, and risk analysis and excavation in eight aspects are mainly carried out. The system comprises a first project for monthly, weekly and daily maintenance, a second project for regional power grid reactive power balance, a third project for reactive voltage control system control, a fourth project for equipment overload condition, important defect leaving condition and abnormal operation condition, a fifth project for important information missing, mistaken transmission and frequent transmission, a sixth project for channel abnormality, equipment defect and the like in remote operation, a seventh project for main station system abnormal operation influence centralized monitoring, and an eighth project for monitoring auxiliary system abnormal operation influence centralized monitoring.
And (4) auditing professionals for regularly organizing security supervision, operation inspection, marketing and the like for newly added monitoring risk contents, and adding the risk contents passing the auditing into a monitoring risk library. Meanwhile, in order to continuously improve the accuracy and the feasibility of the risk content, the historical risk content, the management and control measures and the like are revised and perfected regularly.
Thirdly, establishing a centralized monitoring risk management and control flow
And for the discovered centralized monitoring risks, a centralized monitoring risk management and control flow is constructed, so that the centralized monitoring risk assessment is reasonable, the risk is issued accurately, the risk management and control measures are in place, and the risk is removed thoroughly. As shown in fig. 2, it comprises the following steps:
1) and (3) risk assessment:
101) initiating risk identification by the monitoring class module;
102) forming centralized monitoring risk content; pushing the centralized monitoring risk content to each professional and manager module of the regulation center;
103) each professional and manager module of the regulation and control center judges whether risk audit occurs, and if yes, the management module is pushed to the regulation and control center branch management leader module; if not, returning to the step 102);
104) the control center branch management leader module judges whether to confirm whether to issue or not, and if so, the next step is carried out; if not, go back to step 102)
2) Risk release;
201) each professional and manager module of the regulation and control center judges whether to issue a risk early warning list, and if so, the step is skipped to the step 202); if not, go to step 203);
202) issuing a risk notification sheet, and jumping to step 204) to push the risk notification sheet to a management department module of a security supervision department and a transportation inspection department;
203) issuing a risk early warning list; and proceeds to step 205 and step 301);
204) each professional and manager module of the control center acquires treatment opinions given by corresponding professional departments; and proceeds to step 301) and step 302);
205) the management department modules of the security supervision department and the operation inspection department perform tracking management on the risk notice; after the work is finished, entering step 302);
206) the management department modules of the security supervision department and the operation and inspection department acquire treatment opinion information corresponding to the risk early warning list, and after the work is finished, the operation enters step 302);
3) managing and controlling risks;
301) the monitoring class module obtains a risk management and control measure according to the risk notice and the processing suggestion given by the professional department;
302) the operation, maintenance and overhaul unit module obtains corresponding units to carry out risk pre-control and rectification measures according to the tracking management result and the disposal suggestion; the operation and maintenance and overhaul unit carries out the work of risk pre-control and rectification measures according to the obtained corresponding unit; entering step 402 after the work is finished);
4) risk relief
401) After the risk is eliminated, the monitoring class module carries out risk archiving;
402) the management department modules of the security supervision department and the operation and inspection department judge whether the audit risk is eliminated, if so, the step 403 is carried out); if not, returning to the step 302), and regaining the risk pre-correcting measures;
403) each professional manager module of the regulation center judges whether the audit risk is eliminated, if so, the step 401) is carried out to carry out risk archiving; if not, return step 401).
In the process:
(1) establishing a dynamic risk assessment mechanism
For the same risk content, different hazards can be generated under different power grid operation modes, equipment operation conditions and external conditions, and for the centralized monitoring risks discovered by an identifier, scientific analysis and evaluation are carried out by relevant professionals in combination with the current power grid equipment operation conditions, the external conditions and the like, reasonable risk level evaluation is made, and therefore different management and control measures are taken.
(2) Establishing a differentiated risk release mode and management and control measures
The concealability of centralized monitoring risks causes that the centralized monitoring risks may not temporarily threaten the operation safety of power grid equipment and the like, and the development of the centralized monitoring risks causes that the effective control of the adopted control measures may be lost, so that different risk release strategies are carried out according to the influence of the risks on the operation of the power grid equipment, and related units are reminded to carry out differentiated control. Firstly, centralized monitoring risks which do not affect the safe operation of a power grid and equipment temporarily are compiled, and a centralized monitoring risk informing form is compiled, and risk issuing and informing are carried out on related units. Secondly, the safe operation of the power grid and equipment is influenced, but prevention and control measures are taken or the organization is developing the centralized monitoring risk of rectification, a centralized monitoring risk informing form is compiled, and the relevant units are issued and informed of the risk. Thirdly, centralized monitoring risks which have caused influences on safe operation of a power grid and equipment but have not taken prevention and control measures and implementation rectification measures are compiled, a centralized monitoring risk early warning bill is compiled, management and control measures and requirements are made clear by professional management departments, the centralized monitoring risk early warning bill is issued to responsibility unit organizations for implementing risk pre-control and rectification measures, dynamic risk tracking work is well done, and risk tracking conditions are reported to relevant professional management departments regularly.
Fourthly, establishing a centralized monitoring risk identification rule
The centralized monitoring risk coverage is wide, the concealment is strong, the promotion of the risk identification efficiency is restricted by a large amount of data analysis and limited human resources, and the problems of large workload, easy omission, low efficiency and the like exist in the process of identifying the risk through manual work. Through summarizing historical monitoring information and hidden danger mining experience, centralized monitoring risk knowledge rules are refined, a typical risk rule base is established, centralized monitoring risk intelligent identification function construction is carried out in a monitoring big data system, centralized monitoring risk automatic identification is achieved, and risk identification work efficiency is remarkably improved.
And risk online analysis, intelligent research and judgment and risk alarm are realized according to the formulated risk identification rule by data import and parameter modification.
Centralized monitoring risk identification rule
Fifth, construction centralized monitoring risk early warning system
The centralized monitoring risk early warning work relates to the problems of large information analysis amount, wide analysis range, multiple risk control procedures, complex control and low efficiency by manpower, and the technical support system has the advantages of large data acquisition amount, high data accuracy, high operation and analysis speed and the like, and can obviously improve the efficiency of the risk early warning work.
(1) System infrastructure
An open 3000 system in a power grid EMS, a main station and station related systems are deployed in a region I, and a regulation cloud, an intelligent power grid scheduling technology support system OMS and a centralized monitoring risk early warning system developed based on the regulation cloud are deployed in a region III. The regulation cloud is deployed in the area III, the I area is isolated from the firewall, the monitoring risk early warning system developed based on the regulation cloud platform synchronously acquires data in a master station and a station server through a depth patrol function, statistical analysis of the data is carried out, intelligent calculation, standard verification and special analysis are carried out, a risk intelligent identification result is generated, a monitor can master and complete risk list compilation in the first time, a field operation and maintenance unit and automatic operation and maintenance personnel are informed, safety risks are dealt with in time, the speed of risk identification is greatly increased, and the risk informing time is shortened. As shown in fig. 1.
(2) System program function introduction
1) Depth patrol
Based on the alarm window information threshold value setting rule and the collection, storage, calculation and study and judgment of the main station automation data, the deep inspection function can realize three retrieval functions of frequent analysis, non-corresponding plate placement, signal inspection inhibition and the like, and generate corresponding risk information.
The frequent analysis can screen out related risk information such as the frequent information of the whole station, the frequent information of protection information, the frequent information of switch, the frequent information of disconnecting link, the transformer substation which does not send information and the like.
The non-correspondence of the placement mainly realizes the retrieval and identification of related risk contents such as the inconsistency of equipment state and listing record, the inconsistency of defect plate and defect record, the inconsistency of window alarm information and light word plate state, the inconsistency of alarm content and placement content, and the like.
The inhibition signal tour can search 6 kinds of risk information such as remote signaling blockade, remote measuring blockade, single-point inhibition, interval inhibition, station inhibition, screen refreshing inhibition and the like
2) Risk intelligent identification
And analyzing and judging alarm information generated by the depth patrol at regular time according to the centralized monitoring risk identification rule to generate risk early warning content meeting the rule.
3) Risk ticket intelligent generation
The system supports intelligent identification risk list establishment and manual identification risk list establishment according to the establishment requirements of the risk early warning list and the risk notification list. For the safety risk which can be distinguished by the risk identification rule, the risk list number meeting the requirement and the corresponding risk list in the word format can be automatically generated, and the intelligent risk list compiling is completed; and (4) for the safety risk which can not be distinguished by the risk identification rule, after contents such as a risk list type, a risk level, a release type, risk content and the like are definitely filled, a manual identification risk list can be generated and downloaded for storage.
4) Risk process intelligent management and control
The complexity of risk process management and control is brought by the diversity of the centralized monitoring risk types, the difference of the release modes and the management and control measures and the dynamics of risk development changes, and the requirement of current work cannot be met by depending on the management mode of the traditional form documents. The centralized monitoring risk management and control platform is developed in the monitoring big data system, the whole-process electronic closed-loop management and control of centralized monitoring risk compiling, auditing, evaluating, releasing, managing and controlling and releasing is realized, and the dynamic tracking management of the risk management and control measure implementation condition, the risk development condition and the risk elimination condition is realized.
The effect of the technical scheme
Improving risk on-line management and control rate
The risk early warning system is applied to monitoring work, different types of monitoring risks in 2019, 6-12 months are counted and drawn, the monitoring risks caused by equipment defects, normally bright characters and suppression signals are only 0.3%, 0.34% and 0.26% respectively, the monitoring risk capable of being normally controlled is 99.11%, compared with the traditional control rate of 79.98%, the monitoring risk is greatly improved, and the huge advantage of the system in the risk control rate is highlighted.
(II) improving the centralized monitoring safety risk management and control level
Through the construction of the centralized monitoring risk early warning system, the intelligent identification and closed-loop control of risks are realized, the safety of the power grid, equipment and centralized monitoring operation is effectively ensured, the safety operation control level of the power grid equipment is effectively improved, the safety and stability of the power grid are strengthened and guaranteed, especially, the safety of the power grid in strong rainfall, typhoon and peak-to-peak summer periods is ensured, and the centralized monitoring risk early warning system has important significance for reducing the operation risk of the power grid, adjusting the mode, limiting the power, avoiding serious faults of the equipment, equipment damage, forced outage, ensuring reliable and continuous power supply of users and the like.
The invention is further illustrated by the following specific examples:
the system finds that the 220kV continuous-hanging 35kV II-section bus voltage change has fuse blowout in 26 days in 8 months, 30 days in 9 months, 13 days in 10 months and 19 days in 10 months, and belongs to fault information frequent.
Continuous Hangzhou depth-variable inspection information table
1) Increased risk early warning
Considering that the risk does not seriously affect the safe operation of a power grid and equipment, a centralized monitoring risk notice is selected and formulated. Filling in the risk occurrence time; risk level selection is general; announcement type selection notification; and finally filling in risk content and risk analysis. As shown in fig. 3.
2) Generating a risk publication
And checking the established risk notice sheet to generate a risk release flow. The risk early warning management and control module has strong integration and friendly interaction functions, and a risk issuing process generated by one key enters a risk undertaking link after being processed by a monitoring technician. As shown in fig. 4.
3) Risk early warning undertaking
The risk issuing process generating the specific number can issue the risk notice to each risk undertaking center, wherein each risk undertaking center comprises a power dispatching control center, a running inspection part, an operation part and a safety supervision part, and each risk undertaking center can know the risk processing dynamics in real time through risk early warning and tracking and upload the latest risk processing result. As shown in fig. 5.
4) Risk processing results
The operation and maintenance personnel find that the field voltage is changed to be produced by a first mutual inductor connected with the company Limited, the fuse wire is produced by Cuber company, and the voltage-changing fuse wire is frequently fused for two reasons: (1) the voltage transformer has insufficient margin of anti-saturation characteristics, and the voltage transformer is easy to saturate under system disturbance to generate larger current; (2) the 0.5A fuse produced by the Cooper company is sensitive and poor in current disturbance resistance, the characteristics of the fuse product of the Cooper company are checked, the 0.5A fuse of the Cooper company is replaced by the 1A fuse, and the problem is finally solved.
Based on the monitoring risk early warning management and control module of the regulation and control cloud platform, the monitoring risk early warning management and control of 220kV even-hang-transformer 35kV II-section bus voltage-transformer fuse fusing is completed, the whole risk is identified and analyzed, the early warning only needs about 3min to the total time of release, and the high efficiency and the reliability of risk early warning are greatly improved.
The above centralized monitoring transformer substation risk identification and early warning system shown in fig. 1 and fig. 2 and the working method thereof are specific embodiments of the present invention, have embodied substantial features and advances of the present invention, and are based on practical use requirements, and equivalent modifications in terms of shape, structure and the like can be made under the teaching of the present invention, which is within the protection scope of the present solution.
Claims (8)
1. The utility model provides a centralized monitoring transformer substation risk identification early warning system which characterized in that: the centralized monitoring transformer substation risk identification early warning system is deployed in a region III, is isolated from a region I provided with a master station and a station server through a firewall, synchronously acquires data of the master station and the station server, performs statistical analysis, calculation, verification and special analysis on the data comprising equipment defects, normally bright light characters and inhibition signals, and generates intelligent risk identification results and corresponding risk lists based on a centralized monitoring risk library; informing corresponding field operation and maintenance units and automatic operation and maintenance personnel to dispose according to the safe risk level, and realizing the timely control of equipment defects, normally bright words and inhibition signals;
the depth inspection module is used for retrieving frequent analysis, plate placing inconsistency and signal inhibition inspection based on a set alarm window information threshold value and the collection, storage, calculation and study and judgment of main station automation data, and generating corresponding risk information;
the risk intelligent identification module is used for analyzing and judging the risk information generated by the depth inspection module at regular time to generate risk early warning content;
the risk list intelligent generation module supports intelligent identification risk list compilation and manual identification risk list compilation according to the compilation requirements of the set risk early warning list and the set risk notification list; the risk list intelligent generation module automatically generates a risk list number meeting the requirement and a corresponding risk list in a word format according to the safety risk judged by the set centralized monitoring risk library, and finishes the compilation of the intelligent risk list; when the centralized monitoring risk library has no corresponding judgment information and can not judge the safety risk, the risk list type, the risk level, the release type and the risk content are definitely filled, and then are stored and submitted, or the artificial identification risk list is generated and downloaded for storage;
and the risk process intelligent control module acquires the information of the risk list, realizes the whole-process electronic closed-loop control of centralized monitoring risk compilation, audit, evaluation, release, control and release by tracking the risk list, and realizes the dynamic tracking management of the risk control measure implementation situation, the risk development situation and the risk elimination situation.
2. The centralized monitoring substation risk identification and early warning system according to claim 1, is characterized in that: the depth patrol module comprises:
the frequent analysis retrieval submodule is used for screening out risk information of the transformer substation which comprises whole station information frequent, protection information frequent, switch information frequent, disconnecting link information frequent and no information;
the card placing non-corresponding retrieval submodule is used for realizing retrieval and identification of the equipment state and the card hanging record which are not consistent, the defect card and the defect record which are not consistent, the window-entering warning information and the light word card state which are not consistent and the warning content and the card placing content which are not consistent;
and the inhibition signal patrol retrieval submodule is used for retrieving risk information of remote signaling blockade, remote measuring blockade, single-point inhibition, interval inhibition, station inhibition and screen refreshing inhibition.
3. The centralized monitoring substation risk identification and early warning system according to claim 2, is characterized in that: risk process intelligence management and control module includes:
the risk early warning sub-module is newly added, a risk notice is selected to be compiled according to the influence of the risk on the safe operation of the power grid and equipment, and the risk occurrence time, the risk level, the release type, the risk content and the risk analysis are filled in the risk notice;
generating a risk release sub-module, acquiring a risk notice and initiating a risk release process;
the risk early warning undertaking submodule generates a risk issuing flow containing a specific number and issues a risk notice to each risk undertaking center, comprises a power dispatching control center, a transportation inspection part, an operation part and a security supervision part, monitors the risk processing dynamics in real time and uploads the latest risk processing result;
and the risk processing result submodule is used for checking risk products so as to solve the problem.
4. The centralized monitoring substation risk identification and early warning system according to claim 3, is characterized in that: the risk online analysis, intelligent research and judgment and risk alarm are realized according to the established centralized monitoring risk library through data import and parameter modification.
5. The centralized monitoring substation risk identification and early warning system according to claim 1, is characterized in that: the risk identification early warning system of the centralized monitoring transformer substation periodically identifies risks according to the content of each risk in the centralized monitoring risk library, and realizes the standardization of risk identification; the centralized monitoring risk library is constructed around monitoring alarm information, equipment measurement data, power grid event information and an equipment ledger according to multiple dimensions including power supply and power balance, equipment load rate, system operation margin, main equipment health degree and centralized monitoring function completeness; the centralized monitoring risk library comprises a plurality of risk requirement elements which are respectively risk content, risk level, release mode, release object, management and control measure, person identification and identification period, for each risk content, the detailed content of each element is determined in the risk library, the requirements of different risk management and control of power supply characteristics, net rack characteristics and load characteristics of different city companies are met, and guidance and support are provided for various identification personnel to carry out monitoring risk identification work according to specifications.
6. The centralized monitoring substation risk identification and early warning system according to claim 1, is characterized in that: the centralized monitoring risk library dynamically changes to continuously improve the breadth and depth of centralized monitoring risks and continuously expand the content of the risk library, including risk analysis and mining in eight aspects;
first, the work of the monthly, weekly and daily repair plan,
secondly, the reactive power balance of the regional power grid,
thirdly, the control condition of the reactive voltage control system,
fourthly, the heavy load condition of the equipment, the leaving condition of important defects and the abnormal operation condition,
fifthly, important information is missed, mistakenly sent and frequently sent,
sixthly, the problems of channel abnormality and equipment defects in remote operation,
seventhly, the problem that the centralized monitoring is influenced by the abnormal operation of the main station system,
eighthly, the problem that the centralized monitoring is influenced by the abnormal operation of the monitoring auxiliary system;
auditing professional personnel who regularly organize safety supervision, operation inspection and marketing of newly added monitoring risk contents, and adding the approved risk contents into a monitoring risk library; meanwhile, in order to continuously improve the accuracy and the feasibility of the risk content, the historical risk content, the management and control measures and the like are revised and perfected regularly.
7. The centralized monitoring substation risk identification and early warning system according to claim 1, is characterized in that: the content stored in the centralized monitoring risk library comprises a serial number, risk content under the corresponding serial number, a risk level, a release mode, a release object, a control measure, an identifier and an identification period; the risk level options include major, general; options of the release mode include informing, focusing attention and timely remedying; the options of the release object comprise safety supervision, operation and inspection, marketing, regulation and control center, and operation party, protection and automatic communication under the regulation and control center.
8. The method for identifying and warning the risk of the centralized monitoring transformer substation, which adopts the system for identifying and warning the risk of the centralized monitoring transformer substation as claimed in any one of claims 1 to 7, is characterized in that: the risk identification early warning system of the centralized monitoring transformer substation establishes a monitoring class module, professional and manager modules of a regulation center, a branch management leader module of the regulation center, a management department module of a safety supervision department and a transportation and inspection department, and an operation, maintenance and overhaul unit module according to an object; the risk identification early warning method for the centralized monitoring transformer substation comprises the following steps:
1) and (3) risk assessment:
101) initiating risk identification by the monitoring class module;
102) forming centralized monitoring risk content; pushing the centralized monitoring risk content to each professional and manager module of the regulation center;
103) each professional and manager module of the regulation and control center judges whether risk audit occurs, and if yes, the management module is pushed to the regulation and control center branch management leader module; if not, returning to the step 102);
104) the control center branch management leader module judges whether to confirm whether to issue or not, and if so, the next step is carried out; if not, go back to step 102)
2) Risk release;
201) each professional and manager module of the regulation and control center judges whether to issue a risk early warning list, and if so, the step is skipped to the step 202); if not, go to step 203);
202) issuing a risk notification sheet, and jumping to step 204) to push the risk notification sheet to a management department module of a security supervision department and a transportation inspection department;
203) issuing a risk early warning list; and proceeds to step 205 and step 301);
204) each professional and manager module of the control center acquires treatment opinions given by corresponding professional departments; and proceeds to step 301) and step 302);
205) the management department modules of the security supervision department and the operation inspection department perform tracking management on the risk notice; after the work is finished, entering step 302);
206) the management department modules of the security supervision department and the operation and inspection department acquire treatment opinion information corresponding to the risk early warning list, and after the work is finished, the operation enters step 302);
3) managing and controlling risks;
301) the monitoring class module obtains a risk management and control measure according to the risk notice and the processing suggestion given by the professional department;
302) the operation, maintenance and overhaul unit module obtains corresponding units to carry out risk pre-control and rectification measures according to the tracking management result and the disposal suggestion; the operation and maintenance and overhaul unit carries out the work of risk pre-control and rectification measures according to the obtained corresponding unit; entering step 402 after the work is finished);
4) risk relief
401) After the risk is eliminated, the monitoring class module archives the risk;
402) the management department modules of the security supervision department and the operation and inspection department judge whether the audit risk is eliminated, if so, the step 403 is carried out); if not, returning to the step 302), and regaining the risk pre-correcting measures;
403) each professional manager module of the regulation center judges whether the audit risk is eliminated, if so, the step 401) is carried out to carry out risk archiving; if not, return step 401).
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