CN104835078B - Consider that the trend of prepared auto restart action determines method in static security analysis system - Google Patents
Consider that the trend of prepared auto restart action determines method in static security analysis system Download PDFInfo
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Abstract
Consider that the trend of prepared auto restart action determines method in a kind of static security analysis system, belongs to control field.It is in the online static security analysis module, one prepared auto restart model is set, in the online static security analysis module scans forecast failure, increase prepared auto restart motion analysis function, realize that the N 1 after prepared auto restart action is scanned, trend after being acted to prepared auto restart calculates, and generates prediction failure text based on analysis result；The trend determines method, in such a way that backup power automatic switching function is embedded in Load flow calculation, improves the accuracy of original Load flow calculation, and the trend distribution situation of true power grid can be reflected by making result of calculation more, with more practical and reference value for dispatcher；Realize the power supply continuity analysis of important power consumers；It realizes dispatcher's prediction failure and supports function.
Description
Technical field
The invention belongs to control field more particularly to a kind of determination methods for trend in static security analysis system.
Background technology
With the continuous development of modern electric technology, the scale of electric power networks is increasing, and complexity is also higher and higher.
The influence to power grid security is destroyed with landing pit natural calamity, geological disaster, environmental hazard and external force increasingly
Greatly, requirements at the higher level are proposed to power network safety operation, existing grid monitoring techniques means cannot still adapt to power grid completely
Growth requirement.In light of this situation, there is an urgent need to research and develop a series of practicabilities and operation in intelligent scheduling technology support system
Property the advanced application of intelligence had both, for the quick handling failure of power system monitor person, restore electricity and formulate Plant maintenance plan
Strong support is provided, and further increases the accuracy and rapidity of accident abnormality processing, ensures power network safety operation.
Electric company of the cities Guo Wangmou ground used at present tune degree system is the ground tune degree of certain scientific and technological limited company
Service system.The platform uses CORBA technologies using the CIM/CIS data model definitions for following 61970 standards of IEC, if
The system integration frame for following 61970 component reference models of IEC has been counted, and has realized IEC61970 CIS interfaces.The system is adopted
With server/client (C/S) structure, multi-context is supported, can be taken across UNIX and PC hardware platforms, and with different UNIX
Mixed cross-platform ability of anticipating is had a high regard in business.
Although this system provides a series of as online static security analysis, dispatcher training system system (DTS) are contour
Grade application function, it is intended to facilitate dispatcher to analyze and simulate the electric network swim situation under different running method, improve dispatcher and exist
Accident analysis when in face of power grid accident and disposing capacity, but in practical applications, however it remains problems.For example, becoming
When power station main transformer failure occurs, static security analysis module can not correctly simulate the prepared auto restart action situation of real power grid with DTS,
And the corresponding power flow changing of reasonable computation, while can not also generate reasonable available prediction failure text.In addition, prepared auto restart model
Maintenance function do not open within the system, dispatcher can not to the prepared auto restart method of operation carry out independence maintenance.
Invention content
Technical problem to be solved by the invention is to provide prepared auto restart action is considered in a kind of static security analysis system
Trend determines method, in dispatcher training system system and online static security analysis in N-1 scannings be easily arranged
The prepared auto restart method of operation facilitates analysis and simulates the electric network swim distribution situation under different running method, improves real-time online and grind
Study carefully the security and stability of power grid, and is dispatcher's generative science, available prediction failure text；It is carried for area power grid monitoring personnel
System high application function is supported in scheduling for more scientific practicality, is promoted judgement processing capacity of the regulation and control personnel to accident, is improved
The accuracy and rapidity of accident abnormality processing further promote power grid intensive management level, are that the safety and stability of power grid is transported
Row provides strong technical support.
The technical scheme is that：It provides and considers that the trend of prepared auto restart action determines in a kind of static security analysis system
Size and the direction of trend are obtained in method, including online static security analysis module, it is characterized in that：
In the online static security analysis module, a prepared auto restart model is set, prepared auto restart automatic safe is provided
Device action analog functuion；
In the online static security analysis module scans forecast failure, increase prepared auto restart motion analysis function,
Realize that the N-1 scannings after prepared auto restart action, the trend after being acted to prepared auto restart calculate, to accurately reflect prepared auto restart action
Power flow changing later, and prediction failure text is generated based on analysis result；
When carrying out N-1 scannings using the online static security analysis module, prepared auto restart can be independently arranged in dispatcher
The method of operation of device adjusts dispatcher with enabling to simulate and analyze the electric network swim distribution situation under different running method
The security and stability of real-time online ground-to-ground area's power grid is studied, and the security and stability of real-time online research power grid is improved, and
Available prediction failure text is generated for dispatcher, to improve emergency disposal energy of the dispatcher for power grid accident；
The trend determines method, is embedded in Load flow calculation using backup power automatic switching function, not to the calculating of load transfer case
The actual act situation of backup auto-activating device is only accounted for, while the load transfer situation of system external model being also included in and is considered, is carried
The accuracy for having risen original Load flow calculation, the trend distribution situation of true power grid can be reflected by making result of calculation more, to dispatcher
Speech is with more practical and reference value；Realize the power supply continuity analysis of important power consumers；It is pre- to realize dispatcher's accident
Want to support function.
Specifically, the action that automatic safety device action simulation function includes single backup auto-activating device of hauling oneself willingly into is patrolled
Volume, the action logic of the single backup auto-activating device is as follows：
First, it is determined that whether dead electricity enters and judges in next step, otherwise terminate if dead electricity main power source；
Secondly, judge whether stand-by power supply charges, enter if electrification and judge, if not charged, own in next step
The equal actual effect of power supply, prepared auto restart action is meaningless, terminates to judge；
Third, judges whether the current method of operation meets the action request of prepared auto restart, which needs for certainly
It throws and completes setting in model maintenance function.If it is satisfied, then prepared auto restart meets operation condition, acted, otherwise judges to terminate.
Trend described in it determines method, and the trend after being acted to prepared auto restart calculates, and is carried out according to the following steps：
First, on the basis of ground state trend, cut-offfing equipment and starting network topology in stoppage in transit electric system, in topology
In the process, judge there is which backup auto-activating device to meet operation condition, these devices are screened；
After screening, actuation time shortest one or a batch are selected in all qualified backup auto-activating devices
Device carries out switching action, after be latched these and acted backup auto-activating device；
After one wheel prepared auto restart action, restarts network topology, check in network and cut-off equipment, and detected whether full
The backup auto-activating device of sufficient operation condition, if there is the backup auto-activating device for meeting operation condition, then repeatedly the next item up acts, until
Until there is no backup auto-activating device load operation condition；
Finally, Load flow calculation is carried out, and exports result.
Trend described in it determines method, in static security analysis module, realizes the trend meter after being acted to prepared auto restart
It calculates and the output phase answers accident prediction text function.
Further, the static security analysis module is when carrying out Load flow calculation, cut-offs analysis to each and terminates
After, in addition to check the out-of-limit situation of the individual equipments such as line current, transformer capacity, generator output and busbar voltage with
Outside, also monitor that the stable cross section being made of line and transformer is active.
Further, the prepared auto restart model uses following synchronous method between multi-platform：
A, it on the work station of dispatcher training system system, is realized to backup auto-activating device by prepared auto restart maintenance interface
It safeguards；
B, after the prepared auto restart model of dispatcher training system system changes, current prepared auto restart model can be led automatically
Enter into XML file, and is sent in the standby machine of static security analysis；
C, in static security analysis module, setting monitoring programme monitors the export time of XML file, if it find that XML
The export time in file is newer than the model time of "current" model, then XML file is imported into static security analysis automatically
In model.
It is multi-platform described in it, include at least dispatcher training system system and static security analysis system.
Further, during the static security analysis module scans forecast failure, prepared auto restart motion analysis is increased
Function realizes the N-1 scannings after prepared auto restart action, and generates prediction failure text based on analysis result, to facilitate dispatcher
Carry out prediction failure work, and obtains more accurate available calculating data；
Wherein, prediction failure work includes following 4 component parts：Operating condition, accident situation point before accident
Analysis, stand interior accident treatment and impacted plant stand accident treatment；
1) for " operating condition before accident ", prediction failure work will check the current operation of all main transformers of particular substation
Mode, and export accordingly result；
2) for " stand in accident treatment " and " impacted plant stand accident treatment " part, prediction failure work according to《City
Area's Forming Electrical Dispatching Command Tickets regulation》With《The strong power transmission supplementary provisions of utility grid》Regulation, by dispatcher according to current electric grid situation and
Data information handles corresponding accident；
3) for " accident situation analysis ", prediction failure work includes the following contents：Nature of occurence, main transformer load condition and
Fault message summarizes；
Wherein, the nature of occurence is automatically generated according to the failure being artificially arranged in dispatcher training system system, and
Open dispatcher's manual editing's function；
It is negative that the main transformer load condition provides the associated station main transformer in local power supplying companies bureaus's compass of competency by accident impact
Information carrying ceases；System loading predicts summer peak carry calculation by the current year that fortune side provides before accident therein；The prediction failure is answered
Trend section to import is master data model, calculates the electric network swim variation after all backup auto-activating device actions, and
Export the load factor situation of all related substations；
Fault message described in it summarizes in table form, summarizes the related important information after failure occurs；Described
Related important information includes autotomying situation, main transformer load, overload circuit, influencing plant stand and responsible consumer.
Further, for described " autotomying situation ", the trend determines to be owned after method, output failure occur
Action from cutting apparatus relevant information；
For " the main transformer load ", the trend determines method, and all main transformers that accident to that plant stand occur load
Rate situation is exported to text；
For " the overload circuit ", the trend determines method, reads the trend section of importing, calculates power grid
Power flow changing situation exports the line name that load factor is more than 80%；
For described " influencing plant stand ", during electric network swim calculates, the trend determines method, will traverse
The dead electricity situation of the relevant subordinate station of plant stand institute occurs for accident, and according to the electrification situation and action record of topological busbar, differentiation
The subordinate station is instantaneous dead electricity or permanent dead electricity, and result is exported to influence station and full cut-off station two parts；
For " responsible consumer ", the trend determines method, the case where according to full cut-off circuit, exports its correlation
All responsible consumer information；The trend determines method by establishment " responsible consumer information table " function, by relevant institute
There is responsible consumer information to feed back to dispatcher, to facilitate dispatcher that can safeguard the related responsible consumer information of administrative power grid, and
The coverage of dead line is checked in prediction failure.
Compared with the prior art, it is an advantage of the invention that：
1. by the way that prepared auto restart model is arranged, prepared auto restart automatic safety device action simulation function is provided, the technical program exists
Prepared auto restart simulation application is realized under static security analysis and dispatcher training system system environments；Model maintenance work(is opened
Energy；The power supply continuity analysis of important power consumers can be achieved；It realizes dispatcher's prediction failure and supports function；
2. by providing prepared auto restart automatic safety device action simulation function, dispatcher being capable of independence maintenance prepared auto restart mould
The method of operation of backup auto-activating device is freely arranged in type, is distributed with facilitating simulation and analyzing the electric network swim under different running method
Situation, enabling dispatcher, ground-to-ground the safety and stability situation of area's power grid is studied in real time, online, and improves it for power grid thing
Therefore emergency disposal ability；
3. embedded Load flow calculation, backup auto-activating device is not only allowed for the calculating of load transfer case in backup power automatic switching function
Actual act situation, while the load transfer situation of system external model being also included in and is considered, improve original Load flow calculation
Accuracy, the trend distribution situation of true power grid can be reflected by making result of calculation more, with more practical and reference for dispatcher
Value.
Description of the drawings
Fig. 1 is the flow diagram of single prepared auto restart action logic of the invention；
Fig. 2 is the Load flow calculation flow chart that the present invention considers prepared auto restart action；
Fig. 3 is static security analysis original state value mode schematic diagram of the present invention；
Fig. 4 is a simulation cycle of dispatcher training system system of the present invention；
Fig. 5 is synchronization flow diagram of the prepared auto restart model of the present invention between multi-platform.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and examples.
In Fig. 1, in order to correctly simulate the action of backup auto-activating device in static security analysis, need to formulate correctly for certainly
Action logic is thrown, the action logic of single backup auto-activating device is as follows in technical solution of the present invention：
First, it is determined that whether dead electricity enters and judges in next step, otherwise terminate if dead electricity main power source；
Secondly, judge whether stand-by power supply charges, enter if electrification and judge, if not charged, own in next step
The equal actual effect of power supply, prepared auto restart action is meaningless, terminates to judge；
Third, judges whether the current method of operation meets the action request of prepared auto restart, which needs for certainly
It throws and completes setting in model maintenance function.If it is satisfied, then prepared auto restart meets operation condition, acted, otherwise judges to terminate.
In Fig. 2, after embedded backup auto-activating device, the Load flow calculation of static security analysis will consider the action feelings of prepared auto restart
Condition, principle are as follows.
First, static security analysis is on the basis of ground state trend, cut-offfing equipment and starting net in stoppage in transit electric system
Network topology, during topology, which backup auto-activating device judgement has meet operation condition, these devices are screened.
After screening, actuation time shortest one or a batch are selected in all qualified backup auto-activating devices
Device carries out switching action, after be latched these and acted backup auto-activating device.
After one wheel prepared auto restart action, static security analysis software restarts network topology, checks that cut-offfing in network sets
It is standby, and detect whether the backup auto-activating device for meeting operation condition, if there is related device, then repeatedly the next item up acts, directly
Until no backup auto-activating device load operation condition.
Finally, static security analysis carries out Load flow calculation, and exports result.
Static security analysis original state value mode of the present invention is given in Fig. 3.
The technical program to prepared auto restart act after Load flow calculation and the output phase answer accident prediction text function, quiet
It is realized in state safety analysis module.
The backup auto-activating device of the technical program and static security analysis such as lower part are closely related.
1) initial mode prepares
For safety analysis calculating, always carried out in some initial method of operation.It can there are three types of initial mode
It is selective：First, take real-time mode, i.e., the real time operation mode that state estimation provides；Second is that taking trend mode, that is, pass through scheduling
The good particular form of member's load flow rectification；Third, taking history data mode (being also known as history CASE), i.e., what is preserved in the past goes through
History operation data, in the case where taking history CASE modes, static security analysis can pass through from date, Close Date and current application
(being typically chosen state estimation PAS_RTNET and Dispatcher Power Flow PAS_DPFLOW) come transfer system preservation CASE sections, and
Relevant historical CASE sections are read in the corresponding static security analysis research mode of the machine.
2) operating parameter is safeguarded
● Load flow calculation parameter
Static security analysis is to carry out Load flow calculation at all, and algorithm can be arranged on Load flow calculation parameter picture, receive
Hold back the operating parameters such as criterion, the imbalance power method of salary distribution.
Balancing machine is the voltage phase angle reference point in maximum electrical island.The imbalance power method of salary distribution can be in following four
It is selected in mode：Balancing machine absorbs, the distribution of multimachine capacity, the distribution of multimachine coefficient and multimachine mean allocation.When selection balancing machine is inhaled
The imbalance power (including power generation, load and network loss) in time receiving, power grid will all be absorbed by balancing machine.When using other three kinds of modes
When, the imbalance power of power grid will be responsible for balance by more generators, as having which those generator participates in power regulation on earth,
Then determined by " participating in active adjusting " domain of generator table.The imbalance power method of salary distribution between more generators includes holding
Amount, coefficient and average three kinds of modes.Select capacity when will according to the variable capacity of generator distribute, select coefficient when according to manually
The coefficient of setting is divided in portion, and selects mean time then mean allocation imbalance power.In the assignment procedure, it is ensured that generator
It contributes within the scope of maximum output and minimum load.
Generator parameter is set, including node type (balance nodes, PQ nodes, PV node etc.) can be with for PV node
Setting control set end voltage or high side bus voltage and the target voltage values of control, it is active for pressing prescribed coefficient participation
The unit of adjusting can be with Set scale coefficient.
● self-defined monitoring power section
Static security analysis is cut-off to each after analysis terminates, in addition to checking line current, transformer capacity, power generation
Machine is contributed with other than the out-of-limit situations of individual equipments such as busbar voltage, and also monitoring is had by the stable cross section that line and transformer forms
Work(.General important stable cross section is arranged via SCADA is unified, and when safety analysis directly uses.In addition to these stable cross sections
It in addition, can be with some monitoring sections of Additional definitions when carrying out safety analysis.
● equipment Threshold Crossing Alert is arranged
Static security analysis provides equipment Threshold Crossing Alert function, and real-time mode safety analysis is during periodic duty, such as
Some equipment of fruit is all out-of-limit in break calculation continuously several times, can be logged on to the out-of-limit situation of these equipment by being arranged
Window is alerted, for inquiring later.Be respectively set " line current alarm ", " transformer efficiency alarm ", " generator output alarm ",
Whether five kinds of different type equipment such as " busbar voltage alarm " and " stable cross section alarm " more need to alert in limited time, then equipment is arranged
It is out-of-limit to log in the continuous out-of-limit number of alarm needs, when certain type of Threshold Crossing Alert is set as "Yes", and computation of Period process
In continuous out-of-limit number be equal to the out-of-limit number of setting, then out-of-limit equipment can be logged on to alarm window.
3) result of calculation is analyzed
For the technical program after backup power automatic switching function is successfully embedded in static security analysis, result of calculation can be accurately anti-
Reflect the power flow changing after prepared auto restart action, the truth of the result of calculation load power grid accident.
After primary complete safety analysis terminates, static security analysis will export " out-of-limit statistical form ", pair can set
Standby and section out-of-limit status inquiry is analyzed, and each out-of-limit situation for cut-offfing failure will be listed in table, including with properties：
Cut-off type：Refer to circuit N-1, transformer N-1, generator N-1, busbar N-1 or customized failures.
Plant stand title：Refer to the description for cut-offfing the affiliated plant stand of equipment when N-1 is cut-off, this is sky when self-defined failure.
Device name：Refer to the specific description for cut-offfing equipment when N-1 is cut-off, when self-defined failure indicates the name of failure group
Claim.
Cut-off result：It is shown as out-of-limit, dead electricity etc..
Out-of-limit element：The out-of-limit quantity currently cut-off is that subsequent circuit, transformer, generator, busbar and section are out-of-limit
The summation of quantity.
Out-of-limit section：The active out-of-limit quantity of section currently cut-off.
Out-of-limit circuit：The out-of-limit quantity of line current currently cut-off.
Out-of-limit transformer：The out-of-limit quantity of transformer capacity currently cut-off.
Out-of-limit generator：The out-of-limit quantity of generator output currently cut-off.
Out-of-limit busbar；The out-of-limit quantity of busbar voltage currently cut-off.
Severity：The severity of rear system is currently cut-off in reflection.
Other than providing and cut-offfing out-of-limit overview, static security analysis also provides the detailed out-of-limit statistics of each equipment (section)
Situation, including out-of-limit title, out-of-limit number, maximum cut-off equipment and (correspond to out-of-limit most serious in multiple and different cut-off
Cut-off equipment), maximum get over limit value (cut-offfing corresponding out-of-limit more limit value even in the worst case in the case that multiple and different), the out-of-limit rate of maximum
(cut-offfing corresponding out-of-limit out-of-limit rate even in the worst case in the case that multiple and different).
In Fig. 4, one simulation cycle of dispatcher training system system in the technical program is given comprising：
1, start dispatcher's training simulation system and start simulation process；
2, it checks whether succeed to the verification of database, new simulation control parameter is used in combination to be initialized；
If 3, teacher requests timeout simulation process, simulation is waited for；
4, the control command of control centre is obtained；
5, event is taken out from incident file：Event in incident file can be that teacher's realization defines, can also
It is that teacher is added at any time in training process；
6, dynamic analog calcutation is carried out：By calculating generating set solution to model, the frequency on island and the machinery of unit are determined
Power gives trend；
7, the data preparation of Load flow calculation；
8, it determines frequency relay state, executes the actuating of relay when necessary；
9, Load flow calculation：System is resolved comprehensively, the case where according to system state change, it is determined whether need again
Sequence or again factoring table；
10, it according to calculation of tidal current, checks the state of voltage relay and electric current relay, and executes relay if necessary
The tripping or multiple action of device trigger action and controlled breaker；
If relay or breaker actuation 11, occur in the 10th step, illustrates that network topology has changed, just should
The 7th step is returned, network equation is redefined；
12, static simulation has been completed, and such as busy part is inserted at this time, then returns to the 5th step and take event to join from incident file
Number；
13, after Load flow calculation terminates, the power system simulation amount and quantity of state of simulation are got data collection
In database.
In Figure 5, the technical program realizes synchronization of the prepared auto restart model between multi-platform using file interaction mode.
The core of the technical program is to realize backup power automatic switching function, and realizes backup power automatic switching function and need the branch of prepared auto restart model
It holds.
Prepared auto restart model relates generally to two problems：First, the maintenance function of prepared auto restart model is developed on which kind of platform,
Second is that since application will be embedded in multiple platforms of electric system, it is therefore desirable to determine it is multi-platform between prepared auto restart model the side of synchronization
Formula.
1) prepared auto restart model maintenance platform is determined
In practice, the regular event of prepared auto restart may be latched by certain protections, can be also latched after prepared auto restart action
Certain protections.For this reality of real simulation, application must have " protection blocking prepared auto restart " and " prepared auto restart locking is protected
The configuration feature of shield ", and the function needs to protect the support of device model.In order to avoid heavy second protection maintenance, really
It is scheduled on the maintenance function that prepared auto restart model is constructed on DTS work stations.
2) interface and tool of prepared auto restart model maintenance
The technical program provides two interfaces for dispatcher's independence maintenance prepared auto restart model, and interface one is dispatcher training
The master station of analogue system work station；Interface two is static security analysis circle of one area's work station of electric power management system work station
Face.
Above-mentioned interface one, two provides maintenance tool " protection model maintenance tool " for dispatcher, and basic principle is as follows：
First, backup auto-activating device information is configured based on plant stand, if current plant stand is not present, need to first add plant stand.
Second, after improving power plant and substation's information, the corresponding backup auto-activating device of each plant stand can further be configured.
Third, by maintenance tool, user can configure following prepared auto restart information, including：First, prepared auto restart is dynamic
Make time and operating status, the startup time of each backup auto-activating device can be inputted, and whether the corresponding backup auto-activating device of selection is thrown
Enter.Second is that the main power supply information of prepared auto restart, adds the main power supply information of relevant device in the tool.Third, stand-by power supply is believed
Breath, adds the stand-by power supply of relevant device.Fourth, " checking stand-by power supply " option, makes backup auto-activating device in main power supply dead electricity
In the case of, check whether stand-by power supply has electricity just to determine whether prepared auto restart acts in advance.Fifth, mode switch information, setting is standby certainly
Throw the method for operation of device in normal state, i.e., method of operation when forecast accident does not occur.Sixth, step switch information, choosing
Select the switch motion situation after forecast accident generation prepared auto restart action.
3) the multi-platform synchronous method of prepared auto restart model
The trend determines method, by embedded DTS and two big module of static security analysis, due to DTS and static security
It is belonging respectively to the safe areas II and the safe areas I, be furnished with fire wall between two big safety zones.If realized by database mode
The interaction of model, whether the model and current model in it will inquire and compare commercial library before calculating every time are consistent, take
It is longer, it is less efficient.After considering, the technical program determination realized in a manner of file interaction prepared auto restart model it is multi-platform it
Between synchronization.
It is above-mentioned standby to be from synchronization flow of the model between multi-platform：
First, on the work station of DTS, the maintenance to backup auto-activating device is realized by prepared auto restart maintenance interface.
After the prepared auto restart model of second, DTS change, can current prepared auto restart model be imported into XML file automatically
In, and be sent in the standby machine of static security analysis.
Third, setting specific program monitors XML file on static security analysis, if it find that when export in XML file
Between it is newer than the model time of "current" model, then XML file is imported into the model of static security analysis automatically.
" responsible consumer " refer to occupy in the social, political and economic life of a country or a region (city) it is important
Status will likely cause personal injury, larger environmental pollution, larger political impact, larger economic loss, society to its interruption of power supply
The electricity unit of meeting public order heavy clutter or the electricity utilization site for having particular/special requirement to power supply reliability.According to current inhomogeneity
Important power consumers are divided into two class of social class and industrial class by the power-off consequence of type important power consumers, and industrial class is divided into coal mine
And non-coal mine, hazardous chemical, metallurgy and electronics and 4 class of manufacturing industry；Social class is divided into judicial authority of party and government and international organization,
Radio and television, communication, information security, public utilities, communications and transportation, 8 class of health care and crowded place.
For responsible consumer, in addition to having relevant regulations in terms of power supply configuration and the emergency power sources of self-preparing configuration
Outside, also there is very high requirement in terms of emergency management.If power grid accident is related to responsible consumer, electric company should basis
The emergency preplan formulated in advance arranges accident rescue troop as early as possible, scene of the accident tissue repairing is rushed towards, to the accident point of dispatcher
Analysis and processing capacity also require higher.
After so that dispatcher is grasped power grid accident generation in time, the responsible consumer range that may involve, this technology
Scheme provides the analytic function of responsible consumer power supply continuity, can according to the power failure state of power supply unit (instantaneous dead electricity or
The permanent dead electricity of person), relevant responsible consumer information is sorted out into prediction failure and assists text, so that dispatcher refers to.
Its concrete principle is as follows：
First, the technical program establishes important load user's mapping table under database module, and the table is as responsible consumer
The initial configuration of power supply continuity analysis.
Load transfer table includes mainly with properties：
Load name, circuit name, around group name：It is load line that power supply unit power supply associated with responsible consumer, which may be selected,
Road, alternating current circuit or transformer.
Responsible consumer quantity：Responsible consumer quantity associated by the power supply unit.
The columns such as user 1, user 2：Responsible consumer title
Secondly, the technical program cut-offs front and back power flow solutions and prepared auto restart action message according to static security analysis, sentences
It is disconnected will instantaneous dead electricity or permanent dead electricity power supply unit.
Third, the technical program is according to the incidence relation of power supply unit and responsible consumer in responsible consumer mapping table, output
The related responsible consumer information of dead electricity equipment.
Dispatcher's prediction failure of the technical program supports function：
The technical program increases prepared auto restart motion analysis function in static security analysis (SA) scans forecast failure,
It realizes the N-1 scannings after prepared auto restart action, and prediction failure text is generated based on analysis result, which will facilitate dispatcher
Carry out prediction failure work, and obtains more accurate available calculating data.
From reality of work, prediction failure is broadly divided into following 4 component parts：Operating condition, accident feelings before accident
Condition analysis, stand interior accident treatment and impacted plant stand accident treatment.
1) for " operating condition before accident ", application will check the current method of operation of all main transformers of particular substation, and
The output phase is answered as a result, such as " the full wiring operation of two main transformers in the stations XX ".
2) for " accident treatment in standing " and " impacted plant stand accident treatment " part, since the two parts support scheduling
The intelligent of system requires excessively high, considers for safety and system own limitations, need to be according to《City's regional power grid scheduling operation
Regulation》、《The strong power transmission supplementary provisions of utility grid》Deng regulation, by dispatcher according to current electric grid situation and data information, to corresponding
Accident is handled.
3) main study subject of prediction failure application is " accident situation analysis ", which includes the following contents.
● nature of occurence
Using will be automatically generated according to the failure being artificially arranged under DTS, and open dispatcher's manual editing's function.
● main transformer load condition
The technical program provides the associated station main transformer load information by accident impact in electric company's compass of competency.Before accident
System loading predicts summer peak carry calculation by the current year that fortune side provides.
The technical program is using the trend section imported as master data model, after calculating all backup auto-activating device actions
Electric network swim changes, and exports the load factor situation of all related substations.
● fault message summarizes
Prediction failure requires to summarize the related important information after failure occurs, and provides relevant information.
For " 1 autotomys situation ", the technical program exports after failure occurs, everything from cutting apparatus relevant information；
For " load of 2 main transformers ", all main transformer load factor situations that plant stand is occurred for accident by the technical program are exported to text；For " 3
Overload circuit ", the technical program is calculated the power flow changing situation of power grid, load factor is surpassed with that will read the trend section imported
Cross 80% line name output；For " 4 influence plant stand ", during electric network swim calculates, the technical program will traverse
The dead electricity situation of the relevant subordinate station of plant stand institute occurs for accident, and according to the electrification situation and action record of topological busbar, differentiation
The subordinate station is instantaneous dead electricity or permanent dead electricity, and result is exported to influence station and full cut-off station two parts；For " 5 important use
The case where family ", the technical program will be according to full cut-off circuit, exports its relevant all responsible consumer information；In order to by the information
Dispatcher is fed back to, the technical program especially creates " responsible consumer information table " function, facilitates dispatcher that can safeguard administrative
The related responsible consumer information of power grid, and check in prediction failure the coverage of dead line.
The outer backup auto-activating device motion analysis of system：
1) due to that can not be influenced caused by prepared auto restart action outside computing system
For some area, each electric company has specific power grid compass of competency, and the electric power each adjusted
Scheduling system can not obtain electric network model and real time data other than compass of competency.
It is had the following problems based on above-mentioned present situation when needing to carry out Load flow calculation：The subordinate powered by this system plant stand
Plant stand is not in compass of competency, but the subordinate station has prepared auto restart again, can be to plant stand of powering in system after prepared auto restart action
Outlet trend has an impact.If not considering the prepared auto restart action of the outer plant stand of this part system, will be unable to ensure project application
Load flow calculation accuracy.
Concrete example is as follows：
Equipped with tri- plant stands of A, B, C (i.e. usually said substation), plant stand C is the outer plant stand of system, and ground tune can not obtain
Its electric network model and real time data.Higher level station A, B of plant stand C is plant stand in system, the administration adjusted with belonging to this electric company
Range.Circuit AC is the circuit of plant stand A to plant stand C in system, circuit BC be in system plant stand B to the circuit of plant stand C.
In practical situations, if circuit AC dead electricity, the backup auto-activating device of plant stand C can be acted preferentially, be become in plant stand C
The load of depressor T1 will be transferred on circuit BC, then the load of the outlet AC of plant stand A will transfer to the outlet BC of plant stand B, this
The trend on two lines road can change.
And under currently existing Load flow calculation mode, since plant stand C belongs to outside system, the stations circuit AC and B at the stations A
Circuit BC be load model.If static security analysis equipment, which is cut-off, leads to circuit AC dead electricity, the backup auto-activating device of plant stand C acts
It will not be included into result of calculation.Load transfer case will not occur before the circuit BC of the circuit AC and plant stand B of plant stand A,
The trend on this two lines road will not occur accordingly to change.Which results in calculating and actual difference, need to carry out the problem
Processing.
2) solution of the technical program：The load transfer relationship of realization system external model
In order to make the above problem be solved at all, the technical program especially creates load transfer table, is system external mold
Type establishes load transfer relationship.
The technical program establishes " load transfer table " under database module, in the table can be to the load of system external model
Turn to be added and safeguard for information.
Load transfer table includes mainly with properties：
Whether turn to supply：Charge circuit turns for the mark that comes into force.When the value is "No", turn not come into force for configuration；The value
For "Yes" when, turn for configuration take-effective.
Load quantity：When this charge circuit dead electricity, the quantity of load transfer to target line.
The columns such as load 1, load 2:Fill in corresponding load name.Load 1 is the charge circuit that need to turn to supply.Load 2
And the following target line to turn for load.
It should be pointed out that when load 2 does not fill in specific load title, illustrate that prepared auto restart action load transfer occurs
When, 1 trend of load does not occur to turn to supply, and directly becomes 0.Such case betides, and an inlet wire of the outer plant stand of system is by system
Power supply, another line route system is powered outside, and when inlet wire dead electricity in system, load directly goes to the outer plant stand of system, therefore does not exist
Within ground tune limit of consideration.
When there are multiple target loads such as load 2, loads 3, the logic of load transfer is：When 1 dead electricity of load, load
The presence or absence of 1 work(algebraical sum will be assigned on remaining online target load.
The technical program is embedded in Load flow calculation using backup power automatic switching function, is not only allowed for the calculating of load transfer case standby
The actual act situation of automatic bus, while the load transfer situation of system external model being also included in and is considered, improve original tide
The accuracy of stream calculation, the trend distribution situation of true power grid can be reflected by making result of calculation more, with more real for dispatcher
With and reference value；Realize the power supply continuity analysis of important power consumers；It realizes dispatcher's prediction failure and supports function.
Technical scheme of the present invention realizes prepared auto restart under static security analysis and dispatcher training system system environments
Simulation application；Model maintenance function is opened；Realize the power supply continuity analysis of important power consumers；Dispatcher's thing can be achieved
Therefore function is supported in anticipation, can quickly be safeguarded to prepared auto restart model, energy with the method for operation of flexible customization backup auto-activating device
Further increase the working efficiency of dispatcher.
Technical scheme of the present invention enables dispatcher's independence maintenance prepared auto restart model, and the fortune of backup auto-activating device is freely arranged
Line mode enables dispatcher in real time, online to facilitate simulation and analyze the electric network swim distribution situation under different running method
The safety and stability situation of area power grid is studied, and improves its emergency disposal ability for power grid accident.
In technical solution of the present invention, the opening of prepared auto restart model maintenance function makes static security analysis and dispatcher emulate
Research power grid under simulation training environment can closer to power grid truth, for dispatcher can science, accurately analyze net
Network trend is distributed, and improves the analyzing processing ability of power grid accident, and solid foundation has been laid in more preferable development combat exercise.
Backup power automatic switching function is embedded in Load flow calculation, and the reality of backup auto-activating device is not only allowed for the calculating of load transfer case
Action situation, while the load transfer situation of system external model being also included in and is considered, the accuracy of original Load flow calculation is improved,
The trend distribution situation of true power grid can be reflected by making result of calculation more, with more practical and reference value for dispatcher.
Prediction failure support function, can quickly output scheduling person be concerned about power grid imagination failure relevant information, these number
According to previously generally requiring to take considerable time.The trend determines method, appearance, filled up this blank well,
On apparatus of load rate, equipment power failure state and the counting statistics for influencing the information such as responsible consumer, tune is largely alleviated
The work load of degree person, improves working efficiency.
It the method can be widely used in local level electric power network monitoring intelligent scheduling system regions.
Claims (9)
1. considering that the trend of prepared auto restart action determines method, including online static security analysis in a kind of static security analysis system
Size and the direction of trend are obtained in module, it is characterized in that：
In the online static security analysis module, a prepared auto restart model is set, prepared auto restart automatic safety device is provided
Action simulation function；
In the online static security analysis module scans forecast failure, increase prepared auto restart motion analysis function, realizes
Prepared auto restart action after N-1 scanning, to prepared auto restart act after trend calculate, with accurately reflect prepared auto restart action after
Power flow changing, and based on analysis result generate prediction failure text；
When carrying out N-1 scannings using the online static security analysis module, backup auto-activating device can be independently arranged in dispatcher
The method of operation adjust dispatcher real-time with enabling to simulate and analyze the electric network swim distribution situation under different running method
Ground-to-ground the security and stability of area's power grid is studied online, improves the security and stability of real-time online research power grid, and to adjust
Degree person generates available prediction failure text, to improve emergency disposal ability of the dispatcher for power grid accident；
The trend determines method, is embedded in Load flow calculation using backup power automatic switching function, not only examines the calculating of load transfer case
The actual act situation of backup auto-activating device is considered, while the load transfer situation of system external model being also included in and is considered, has improved
The accuracy of original Load flow calculation, the trend distribution situation of true power grid can be reflected by making result of calculation more, for dispatcher more
With practical and reference value；Realize the power supply continuity analysis of important power consumers；Realize dispatcher's prediction failure branch
Hold function.
2. consider that the trend of prepared auto restart action determines method in static security analysis system described in accordance with the claim 1, it is special
Sign is the action logic that the prepared auto restart automatic safety device action simulation function includes single backup auto-activating device, the list
The action logic of a backup auto-activating device is as follows：
First, it is determined that whether dead electricity enters and judges in next step, otherwise terminate if dead electricity main power source；
Secondly, judge whether stand-by power supply charges, enter if electrification and judge in next step, if not charged, all power supplys
Equal actual effect, prepared auto restart action is meaningless, terminates to judge；
Third, judges whether the current method of operation meets the action request of prepared auto restart, which needs in prepared auto restart mould
Setting is completed in type maintenance function；If it is satisfied, then prepared auto restart meets operation condition, acted, otherwise judges to terminate.
3. consider that the trend of prepared auto restart action determines method in static security analysis system described in accordance with the claim 1, it is special
Sign is that the trend determines method, and the trend after being acted to prepared auto restart calculates, and is carried out according to the following steps：
First, on the basis of ground state trend, cut-offfing equipment and starting network topology in stoppage in transit electric system, in topological process
In, which backup auto-activating device judgement has meet operation condition, these devices are screened；
After screening, actuation time shortest one or a collection of device are selected in all qualified backup auto-activating devices
Carry out switching action, after be latched these and acted backup auto-activating device；
After one wheel prepared auto restart action, restarts network topology, check in network and cut-off equipment, and detected whether to meet dynamic
The backup auto-activating device for making condition, if there is the backup auto-activating device for meeting operation condition, then repeatedly the next item up acts, until not having
Until backup auto-activating device load operation condition；
Finally, Load flow calculation is carried out, and exports result.
4. consider that the trend of prepared auto restart action determines method in static security analysis system described in accordance with the claim 1, it is special
Sign is that the trend determines method, in static security analysis module, realize to prepared auto restart act after Load flow calculation and
The output phase answers prediction failure text function.
5. consider that the trend of prepared auto restart action determines method in static security analysis system described in accordance with the claim 1, it is special
Sign is the static security analysis module when carrying out Load flow calculation, is cut-off after analysis terminates to each, in addition to checking
Other than line current, transformer capacity, the out-of-limit situation of generator output and busbar voltage individual equipment, also monitor by circuit and
The stable cross section of transformer composition is active.
6. consider that the trend of prepared auto restart action determines method in static security analysis system described in accordance with the claim 1, it is special
Sign is that the prepared auto restart model uses following synchronous method between multi-platform：
A, on the work station of dispatcher training system system, the dimension to backup auto-activating device is realized by prepared auto restart maintenance interface
Shield；
B, after the prepared auto restart model of dispatcher training system system changes, current prepared auto restart model can be imported into automatically
In XML file, and it is sent in the standby machine of static security analysis；
C, in static security analysis module, setting monitoring programme monitors the export time of XML file, if it find that XML file
In the export time it is newer than the model time of "current" model, then XML file is imported into the model of static security analysis automatically
In.
7. consider that the trend of prepared auto restart action determines method in static security analysis system according to claim 6, it is special
Sign is described multi-platform, includes at least dispatcher training system system and static security analysis system.
8. consider that the trend of prepared auto restart action determines method in static security analysis system described in accordance with the claim 1, it is special
Sign is during the static security analysis module scans forecast failure, to increase prepared auto restart motion analysis function, realize for certainly
N-1 scannings after throwing action, and prediction failure text is generated based on analysis result, to facilitate dispatcher to carry out prediction failure work
Make, and obtains more accurate available calculating data；
Wherein, prediction failure work includes following 4 component parts：Operating condition before accident, is stood at accident situation analysis
Interior accident treatment and impacted plant stand accident treatment；
1) for " operating condition before accident ", prediction failure work will check the current operation side of all main transformers of particular substation
Formula, and export accordingly result；
2) for " stand in accident treatment " and " impacted plant stand accident treatment " part, prediction failure work according to《City area electricity
Net scheduling operation regulation》With《The strong power transmission supplementary provisions of utility grid》Regulation, by dispatcher according to current electric grid situation and data
Information handles corresponding accident；
3) for " accident situation analysis ", prediction failure work includes the following contents：Nature of occurence, main transformer load condition and failure
Information summarizes；
Wherein, the nature of occurence is automatically generated according to the failure being artificially arranged in dispatcher training system system, and open
Dispatcher's manual editing's function；
The main transformer load condition provides the associated station main transformer in local power supplying companies bureaus's compass of competency by accident impact and loads letter
Breath；System loading predicts summer peak carry calculation by the current year that fortune side provides before accident therein；The prediction failure work with
The trend section of importing is master data model, calculates the electric network swim variation after all backup auto-activating device actions, and export
The load factor situation of all correlation substations；
Fault message described in it summarizes in table form, summarizes the related important information after failure occurs；The correlation
Important information includes autotomying situation, main transformer load, overload circuit, influencing plant stand and responsible consumer.
9. consider that the trend of prepared auto restart action determines method in static security analysis system according to claim 8, it is special
Sign is for described " autotomying situation ", and the trend determines method, everything from cutting apparatus after output failure occurs
Relevant information；
For " the main transformer load ", the trend determines method, and accident to that all main transformer load factor feelings of plant stand occur
Condition is exported to text；
For " the overload circuit ", the trend determines method, reads the trend section of importing, calculates the trend of power grid
Situation of change exports the line name that load factor is more than 80%；
For described " influencing plant stand ", during electric network swim calculates, the trend determines method, will traverse accident
Occur plant stand relevant subordinate station dead electricity situation, and according to the electrification situation and action record of topological busbar, distinguish under this
Grade station is instantaneous dead electricity or permanent dead electricity, and result is exported to influence station and full cut-off station two parts；
For " responsible consumer ", the trend determines method, the case where according to full cut-off circuit, exports its relevant institute
There is responsible consumer information；The trend determines that method, will be relevant all heavy by establishment " responsible consumer information table " function
User information is wanted to feed back to dispatcher, to facilitate dispatcher that can safeguard the related responsible consumer information of administrative power grid, and in thing
Therefore the coverage of dead line is checked when envisioning.
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| CN109861203B (en) * | 2018-11-26 | 2022-09-20 | 国网宁夏电力有限公司银川供电公司 | Spare power automatic switching locking checking method |
| CN109800944B (en) * | 2018-12-12 | 2022-09-02 | 国电南瑞科技股份有限公司 | Dispatcher load flow calculation method based on cloud calculation |
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