CN109449940A - Cope with the emergent control wide area coordination approach of the successive event of dynamic process - Google Patents
Cope with the emergent control wide area coordination approach of the successive event of dynamic process Download PDFInfo
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- CN109449940A CN109449940A CN201811624932.8A CN201811624932A CN109449940A CN 109449940 A CN109449940 A CN 109449940A CN 201811624932 A CN201811624932 A CN 201811624932A CN 109449940 A CN109449940 A CN 109449940A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
The invention discloses a kind of emergent control wide area coordination approach for coping with the successive event of dynamic process, control main website safety and stability control device first judges grid operation mode and operating status based on the operation information of the key element pre-saved；Pre-set control scheme list is searched based on grid operation mode, obtains the total amount to be controlled of corresponding control object combination and all kinds of control objects under current operating conditions；Based on the control object operation information pre-saved, the total amount to be controlled of all kinds of control objects is allocated in proportion in the control object in different control sub-station sub-ranges, control command is obtained, realizing has the wide area coordinated control of the control object of control sequential mating feature.The present invention realizes the wide area coordinated control of the control object of the reply successive event of dynamic process, solves the technical issues of electricity net safety stable controlling system can not cope with successive failure.
Description
Technical field
The invention belongs to power system and automation technologies, and in particular to cope with the tight of the successive event of dynamic process
Anxious control wide area coordination approach.
Background technique
DL/T 723-2000 " power system security stability control techniques directive/guide " regulation, to guarantee that electric system bears the
Safety requirements when II class large disturbances should realize guarantee electric power by preventing stability disruption and the serious out-of-limit emergent control of parameter
The second defence line of system safety and stability.When electricity net safety stable controlling system monitors that directive/guide provides that the IIth class large disturbances occur
When, by inquiring the control scheme list being set in advance in control main website safety and stability control device of electric network, to the hair in power grid
The implementations such as motor, load quickly control.IIth class large disturbances as defined in directive/guide are the failures of some isolatisms, and fault type
All compare determination with number of faults etc., therefore, the formulation of control scheme list and the selection of control object are relatively easy and not
It is volatile to match.
Relative to conventional AC power grid and small-scale direct current transportation power grid, chain event occurs for extra-high voltage alternating current-direct current interconnected network
The risk of barrier increases.However, current lack the control strategy matching technique that can support the successive event of reply dynamic.
The harmony of complexity and stability contorting means that AC-DC interconnecting power network stable form develops, it is desirable that promptly controlling
When fully considering the controls of emergent controls means such as the machine of cutting, cutting load, HVDC Modulation, Static Var Compensator SVC control before system
The influence of ordered pair control effect is based on this difficult point, and electricity net safety stable controlling system can't cope in succession well at present
Failure.
Summary of the invention
To solve the above problems, the present invention proposes a kind of emergent control wide area coordination side for coping with the successive event of dynamic process
Method realizes the wide area coordinated control of the control object of the reply successive event of dynamic process, solves electricity net safety stable control
System can not cope with the technical issues of successive failure.
The present invention adopts the following technical scheme that, a kind of emergent control wide area coordination side coping with the successive event of dynamic process
Method, the specific steps are as follows:
1) control main website safety and stability control device judges that power grid is transported based on the operation information of the key element pre-saved
Line mode and operating status；
2) pre-set control scheme list is searched based on grid operation mode, obtains corresponding control under current operating conditions
The total amount to be controlled of object composition processed and all kinds of control objects；
3) based on the control object operation information pre-saved, by the total amount to be controlled of all kinds of control objects in different controls
It is allocated in proportion in control object in the sub-ranges of substation, obtains control command, realizing has control sequential cooperation
The wide area coordinated control of the control object of feature.
Preferably, the operation information specific method for pre-saving key element is control sub-station safety and stability control device
The operation information of the local previously selected key element of real-time monitoring, and the operation information of previously selected key element is sent
To control main website safety and stability control device；Control the local previously selected key element of main website safety and stability control device monitoring
Operation information receives the operation information of the key element sent on control sub-station safety and stability control device；By previously selected pass
The operation information of key elements is stored and is periodically flushed；
The operation information of the key element pre-saved in the step 1) is the electricity in a successive event of dynamic process
When the successive failure that safety stabilization control system control scheme list is covered occurs for the first time for Force system, first element fault hair
The operation information of key element in preset time before death.
Preferably, control scheme list is preset method particularly includes:
21) for the safety stabilization control system that protect the stabilization of power grids under a variety of methods of operation, in every kind of method of operation
Under, for previously selected key element, all key elements that may be broken down are based on generation timing sequence and carry out arrangement group
It closes, obtains all successive failure combinations, the quantity of every kind of method of operation successive failure combination are as follows:Wherein N is to need
Identify the component population of failure, i.e., previously selected key element sum；
22) under every kind of method of operation, for each successive failure combination settings control scheme list, specifically: it will be successive
Failure combines the maximum time interval T in Z between two failures occurred in successionspanIt is divided into X parts to get to X time interval,
X=Tspan/Tdiv, TdivIndicate the minimum interval between two failures occurred in succession, two failures occurred in succession it
Between maximum time interval TspanMinimum interval T between two failures occurred in successiondivIt is preset value, for
Successive failure comprising m failure combines Z, and the time interval between failure occurred in succession based on two combines successive failure
Z further division obtains the corresponding X of successive failure combination Zm-1A failure betides the successive failure of different time intervals in succession
Control scheme list is arranged for each successive failure combination in combination, i.e. there are X by successive failure combination Zm-1It is a with phase
After the corresponding control scheme list of failure for betiding different time intervals；The event occurred in succession is stored in the control scheme list
Hinder the total amount to be controlled of corresponding control object combination and the combination of every class control object under each operating status.
Preferably, the method for control object operation information is pre-saved specifically:
31) station safety and stability control device real-time monitoring local control object operation information is executed, to control sub-station safety
Stabilization control device sends all local control object operation informations；
32) control sub-station safety and stability control device receives all execute of subordinate and stands what safety and stability control device was monitored
The operation information of all control objects, and above- mentioned information are sent to control main website safety and stability control device；
33) control main website safety and stability control device receive and store sent on control sub-station safety and stability control device it is each
The control object operation information at station is executed, and is periodically flushed by period regular time；
The control object operation information pre-saved in the step 3) is the electric power in a successive event of dynamic process
When the successive failure that safety stabilization control system control scheme list is covered occurs for the first time for system, first element fault occurs
Control object operation information in preceding preset time.
Preferably, the control object operation information includes the control action used time, and the control action used time includes control
Object local emergency control action used time, the control object local emergency control action used time include that Traditional control means are urgent
Control action used time and Novel control means emergent control act the used time；
The Traditional control means local emergency control action used time is cut-offs institute to breaker from receiving control command
Use the time；The Novel control means emergent control movement used time be from receive control command reach control target value when
Between constant；
The Traditional control means include cutting machine and cutting load；The Novel control means include HVDC Modulation, static nothing
Function compensator SVC control.
Preferably, the control action used time further include under current communication path control command be transmitted to local communication and prolong
When, i.e., the control action used time of the described control object is control command under local emergency control action used time and current communication path
It is transmitted to local the sum of communication delay, it includes holding that control command, which is transmitted to local communication delay, under the current communication path
The reality of current communication path order transmission between row station safety and stability control device and control sub-station safety and stability control device
Communication delay Tcom_subtoexe_abAnd between control sub-station safety and stability control device and control main website safety and stability control device
The practical communication delay T of current communication path order transmissioncom_maintosub_a, communication delay by the location of control object certainly
It is fixed, specifically,
If control object be located at a-th of control sub-station subordinate b-th executes station, communication delay Tcom_subtoexe_ab
With Tcom_maintosub_aThe sum of；If certain control object is located at a-th of control sub-station, communication delay Tcom_maintosub_a。
Preferably, present communications road between station safety and stability control device and control sub-station safety and stability control device is executed
The practical communication delay T of diameter order transmissioncom_subtoexe_abMeasurement method specifically:
71) safety and stability control device of a-th control sub-station and the safety and stability control device at station is executed for b-th of subordinate
It is synchronous to carry out clock；
72) safety and stability control device of a-th of control sub-station is sent out to b-th of execution of subordinate station safety and stability control device
It send comprising test position and current time index information tabControl command；
73) after b-th of safety and stability control device for executing station receives the control command in step 72), immediately to a
The safety and stability control device of a control sub-station returns to time scale information t when receiving control commandba；
74) b-th of execution of the subordinate station safety and stability control device for calculating a-th of control sub-station receives a-th of control
The practical communication delay T for control command of standingcom_subtoexe_ab=tba-tab；
Preferably, in the step 2), corresponding control object combination and all kinds of controls under current operating conditions are obtained
Specific step is as follows for the total amount to be controlled of object:
2-1) when previously selected key element breaks down, control main website safety and stability control device recording element hair
The time of raw failure, if fault element is located in control sub-station safety and stability control device monitoring range, control sub-station just
Ground, which is stamped, to be sent to control main website after markers and is recorded；
2-2) control main website safety and stability control device by the faulty sequencing according to generation, line up failure sequence
Column:
{(F_name_1,F_time_1)；(F_name_2,F_time_2)；…(F_name_n,F_time_n)}
Wherein, F_name_1, F_name_2, F_name_n respectively indicate first the element title to break down, second
A element title to break down and the element title to break down for n-th, F_time_1, F_time_2 and F_time_n difference
Indicate the time of failure of first element to break down, the time of failure of second element to break down and the
The time of failure of the n elements to break down；
2-3) according to pre-set control strategy in the corresponding inquiry control main website safety and stability control device of failure sequence
Table obtains the total amount to be controlled of corresponding control object combination and all kinds of control objects.
Preferably, the wide area coordinated control tool of the control object with control sequential mating feature is realized in the step 3)
Body step are as follows:
Operation information of the main website based on all kinds of control objects 3-1) is controlled, wide area timing coordination is carried out to control object, it will
The total amount to be controlled of all kinds of control objects is allocated in proportion in the control object in different control sub-station sub-ranges,
And determine the action sequence of control object, that is, specific object to be controlled and its control delay, which are determined, as control command is sent to control
Substation；
Control command 3-2) is executed, specifically, control sub-station executes control command after receiving control command；If to be controlled
Object belongs to execution station range, then executes after station receives the control command that control sub-station is sent and execute control command；Execute control
System order is to be delayed to carry out countdown by control to specific object to be controlled, and outlet is acted after arrival time.
Invent achieved the utility model has the advantages that the present invention is a kind of emergent control wide area association for coping with the successive event of dynamic process
Tune method realizes the wide area coordinated control of the control object of the reply successive event of dynamic process, solves electricity net safety stable
Control system can not cope with the technical issues of successive failure.The present invention can match the control of successive failure evolutionary process by setting
Policy Table processed fast and accurately adopts in the dynamic process after AC-DC interconnecting power network breaks down for failure evolution process
Take emergent control measure；By the accurate acquisition to control object actual response time, and then wide area is distributed different types of
Control object carries out strict sequential order cooperation, realizes the wide area coordinated control of the control object of the reply successive event of dynamic process,
The reliability for effectively promoting electricity net safety stable controlling system is conducive to the safety and stability for ensureing Operation of Electric Systems.
Detailed description of the invention
Fig. 1 is a kind of stream of the emergent control wide area coordination approach of successive event of reply dynamic process of the embodiment of the present invention
Cheng Tu；
Fig. 2 be in the embodiment of the present invention a kind of control scheme list configuration method for coping with the combination of most 4 successive failures with
And corresponding control scheme list flow diagram is wherein searched according to the failure combination at the successive time of origin interval of failure.
Specific embodiment
Below according to attached drawing and technical solution of the present invention is further elaborated in conjunction with the embodiments.
The emergent control wide area coordination approach of the reply successive event of dynamic process is implemented by electricity net safety stable controlling system.
Electricity net safety stable controlling system is made up of the safety and stability control device of multiple plant stands communication equipment contact, is divided into control
Main website, control sub-station and execute station.In electricity net safety stable controlling system movement, it is steady safely that control sub-station executes control main website
Determine the control command that control device issues and issue control command to station safety and stability control device is executed, executes station and execute control
The control command that substation safety and stability control device issues.
Embodiment 1
The emergent control wide area coordination approach for coping with the successive event of dynamic process, as shown in Figure 1, specifically including following step
It is rapid:
1) control main website safety and stability control device judges that power grid is transported based on the operation information of the key element pre-saved
Line mode and operating status；
2) pre-set control scheme list is searched based on grid operation mode, obtains corresponding control under current operating conditions
The total amount to be controlled of object composition processed and all kinds of control objects；
3) based on the control object operation information pre-saved, by the total amount to be controlled of all kinds of control objects in different controls
It is allocated in proportion in control object in the sub-ranges of substation, obtains control command, realizing has control sequential cooperation
The wide area coordinated control of the control object of feature.
Embodiment 2
On the basis of embodiment 1, in embodiment 2
1) control main website safety and stability control device judges that power grid is transported based on the operation information of the key element pre-saved
Line mode and operating status；
The operation information specific method for pre-saving key element is control sub-station safety and stability control device real-time monitoring
The operation information of local previously selected key element, and the operation information of previously selected key element is sent to control master
It stands safety and stability control device；Control the local previously selected key element operation letter of main website safety and stability control device monitoring
Breath receives the operation information of the key element sent on control sub-station safety and stability control device；By previously selected key element
Operation information stored and be periodically flushed；
The operation information of the key element pre-saved in the step 1) is the electricity in a successive event of dynamic process
When the successive failure that safety stabilization control system control scheme list is covered occurs for the first time for Force system, first element fault hair
The operation information of key element in preset time before death.
The related elements that the key element, which refers to, may influence system safety and stability or control strategy is implemented, for specific
Power grid is screened based on offline Stability Numerical Analysis；It controls main website or control sub-station monitors key element；When key element is sent out
Raw failure identifies failure by control main website or control sub-station.
The operation information of the key element includes whether element title, element are in operating status, element operation has
The electrical quantity status information such as function power, frequency, voltage, electric current.
2) pre-set control scheme list is searched based on grid operation mode, obtains corresponding control under current operating conditions
The total amount to be controlled of object composition processed and all kinds of control objects；
As a kind of preferred embodiment, control scheme list is preset method particularly includes:
21) for the safety stabilization control system that protect the stabilization of power grids under a variety of methods of operation, in every kind of method of operation
Under, for previously selected key element, all key elements that may be broken down are based on generation timing sequence and carry out arrangement group
It closes, obtains all successive failure combinations, the quantity of every kind of method of operation successive failure combination are as follows:Wherein N is to need
Identify the component population of failure, i.e., previously selected key element sum；
When it is implemented, marking off the memory headroom of a N × N on memory space.Wherein, N indicates safety and stability control
System processed needs to identify the component population of failure；Every part of memory headroom is referred to as BLOCK1；Description in Fig. 2 is 4 × 4
Memory headroom, that is, need to identify failure component population be 4；
22) under every kind of method of operation, for each successive failure combination settings control scheme list, specifically: it will be successive
Failure combines the maximum time interval T in Z between two failures occurred in successionspanIt is divided into X parts to get to X time interval,
X=Tspan/Tdiv, TdivIndicate the minimum interval between two failures occurred in succession, two failures occurred in succession it
Between maximum time interval TspanMinimum interval T between two failures occurred in successiondivIt is preset value, for
Successive failure comprising m failure combines Z, and the time interval between failure occurred in succession based on two combines successive failure
Z further division obtains the corresponding X of successive failure combination Zm-1A failure betides the successive failure of different time intervals in succession
Control scheme list is arranged for each successive failure combination in combination, i.e. there are X by successive failure combination Zm-1It is a with phase
After the corresponding control scheme list of failure for betiding different time intervals；The event occurred in succession is stored in the control scheme list
Hinder the total amount to be controlled of corresponding control object combination and the combination of every class control object under each operating status.
When it is implemented, every part of memory headroom BLOCK1 is divided intoPart, by every part of smaller memory
Space is referred to as BLOCK2, whereinIt is in the single table intersected horizontal with fault element serial number, vertical laterally to send out at first
The element of raw failure be begin, be whole all 2 with longitudinal element finally to break down~N number of element fault combines without permutatation
Quantity.P is the standard literary style in permutation and combination formula.The upper limit of i is N-2, is due to " power system security stability contorting skill
Art directive/guide " regulation two or more element failure just allows to take the control measure such as the machine of cutting, cutting load.In Fig. 2,It is in the left figure of 5, Fig. 2, the single table that laterally " 1 " and longitudinal " 2 " is formed is divided into (1,2)；(1,3,2),(1,4,
2)；Totally 5 tables, i.e., 5 different successive failure combinations respectively represent the phase of two elements for (1,3,4,2), (Isosorbide-5-Nitrae, 3,2)
After the combination of failure --- element 1 first breaks down, element 2 finally breaks down；The successive failure combination of three elements ---
Element 1 breaks down at first, element 3 breaks down again, element 2 finally breaks down breaks down at first with element 1, element 4
It breaks down again, element 2 finally breaks down；The successive failure combination of four elements --- element 1 breaks down at first, element
3,4 successively break down again, element 2 finally breaks down and element 1 breaks down at first, element 4,3 successively occurs again therefore
Barrier, element 2 finally break down.
X(i+1)Indicate that failure betides the quantity of the successive failure combination of different time intervals in succession, wherein X is indicated
Maximum time interval T occurs in succession for two events (failure) on the time with sequencingspanWhen can be subdivided into minimum
Between be spaced TdivNumber, i.e. X=Tspan/Tdiv.Wherein, TspanGenerally equivalent to 5s, if it is greater than 5s, then it is assumed that be independent event；
TdivIt is adjusted according to engineering demand, it is preferable that the TdivAdjusting is that 50ms is even more small, and the value is smaller, corresponding control strategy
Table quantity is more, finer to the control of system Dynamic Evolution；If division result is non-integer, X is rounded downwards；Fig. 2
In, for combining (1,3,2) with successive failure, corresponding control scheme list quantity is X2, X 100, i.e. memory length are 10000.
The moment occurs as 0 moment with 1 failure of element, it is assumed that 3 failure of element occurs between (50ms, 100ms), and 2 failure of element occurs
Between (4.95s, 5.00s), then the storage location of corresponding control scheme list is 0199.This method can will have timing
The Policy Table of multiple successive failures of feature stores and inquiry is reduced to two dimension, is easily achieved in engineering.
Each successive failure is stored in each BLOCK2 combines the timing and the corresponding control of time interval occurred according to failure
Policy Table Con_Tab processed, structure are as shown in table 1:
Table 1
The table is under a certain grid operation mode in the combination of a certain successive failure, and a kind of failure betides different time in succession
The corresponding control scheme list of successive failure combination at interval, if safety stabilization control system power grid to be protected has J kind
The method of operation then needs J such control scheme lists；XjThe operating status of power grid, is characterized as key sections before expression failure
Active power algebraical sum, multi gear can be divided into according to key sections；VkIt is steady by the safety of control main website or control sub-station
Determine the fault type and equipment of control device judgement；UjkIt is combined for control object combination and each control object to be controlled total
Amount；The control object combination is all controls that can be used for emergent control in safety stabilization control system power grid to be protected
The combination of object；The key sections are predetermined based on offline Stability Numerical Analysis result.It should be noted that power grid
Operating status and method of operation differentiation are the prior arts.Grid operation mode generally integrates the electric current of each key element, power
Etc. the identification of the intakes such as electrical quantity and method of operation pressing plate, operation of power networks state is characterized generally as the active power of key sections
Algebraical sum, operation of power networks state and the method for operation occur to be based on key element for the previous period by first element fault of locking
Operation information judged.
The total amount to be controlled of the control object combination and the combination of each control object is all in accordance with offline stabilimeter point counting
It analyses conclusion and formulates, that is, predefine and correspondence is stored in control scheme list.
Complete Policy Table's quantity of the reply successive event emergent control of dynamic process are as follows:
Clearly as the consistent fault element of label is horizontal, actually the same element, power grid security are steady for crossed longitudinally result
Determine control system and take emergent control generally directed to two and more than two element faults, accurately say, completes reply dynamic
Policy Table's quantity of the successive event emergent control of process should be:
The control scheme list is matched with the failure permutation and combination of all successive events, may be implemented to develop in successive event
During just starting implement control measure, and according to successive event develop process, each forecast failure occur when chase after
Add control measure.
As a kind of preferred embodiment, in the step 2), corresponding control object group under current operating conditions is obtained
Specific step is as follows for the total amount to be controlled of conjunction and all kinds of control objects:
2-1) when previously selected key element breaks down, control main website safety and stability control device recording element hair
The time of raw failure, if fault element is located in control sub-station safety and stability control device monitoring range, control sub-station just
Ground, which is stamped, to be sent to control main website after markers and is recorded；
2-2) control main website safety and stability control device by the faulty sequencing according to generation, line up failure sequence
Column:
{(F_name_1,F_time_1)；(F_name_2,F_time_2)；…(F_name_n,F_time_n)}
Wherein, F_name_1, F_name_2, F_name_n respectively indicate first the element title to break down, second
A element title to break down and the element title to break down for n-th, F_time_1, F_time_2 and F_time_n difference
Indicate the time of failure of first element to break down, the time of failure of second element to break down and the
The time of failure of the n elements to break down；
2-3) according to pre-set control strategy in the corresponding inquiry control main website safety and stability control device of failure sequence
Table obtains the total amount to be controlled of corresponding control object combination and all kinds of control objects.
3) based on the control object operation information pre-saved, by the total amount to be controlled of all kinds of control objects in different controls
It is allocated in proportion in control object in the sub-ranges of substation, obtains control command, realizing has control sequential cooperation
The wide area coordinated control of the control object of feature.
As a kind of preferred embodiment, the method for pre-saving control object operation information specifically:
31) station safety and stability control device real-time monitoring local control object operation information is executed, to control sub-station safety
Stabilization control device sends all local control object operation informations；
32) control sub-station safety and stability control device receives all execute of subordinate and stands what safety and stability control device was monitored
The operation information of all control objects, and above- mentioned information are sent to control main website safety and stability control device；
33) control main website safety and stability control device receive and store sent on control sub-station safety and stability control device it is each
The control object operation information at station is executed, and is periodically flushed by period regular time；
The control object operation information pre-saved in the step 3) is the electric power in a successive event of dynamic process
When the successive failure that safety stabilization control system control scheme list is covered occurs for the first time for system, first element fault occurs
Control object operation information in preceding preset time.It is defeated that control object category can be divided into main transformer, route, unit, load, direct current
The power system components such as electric system.
Common control object operation information includes the active power { P of control object1,P2…PM, control object have control
State { the Con of condition processed1,Con2…ConMAnd control object local emergency control action used time { TEOT_1,TEOT_2…,
TEOT_M, M is the control object quantity of this execution station monitoring.
Control object has the state Con of control conditioniIt is Boolean type data, assignment method are as follows:
The pressing plate that control object allows to be controlled puts into (1)
Ii≥Iope (2)
Pi≥Pope (3)
Meet condition (1) and meet formula (2) or (3), determines that control object is in the state that can be controlled, Coni
Value is 1；Otherwise, it is determined that control object, which is in, does not have the state controlled, ConiValue is 0.Wherein, IiIndicate the active electricity of three-phase
Flow the average value of virtual value, PiIndicate active power, IopeAnd PopeIt can artificially adjust, it is preferable that the IopeAdjusting is than executing
Safety and stability control device of standing average value big 80A of the measurement in control object three-phase watt current virtual value under stoppage in transit state,
PopeIt is 20MW or smaller according to the adjusting of the capacity of control object.
Control object operation information described in the present embodiment includes the control action used time, and the control action used time includes control
Object local emergency control action used time processed, the control object local emergency control action used time include that Traditional control means are tight
Anxious control action used time and Novel control means emergent control act the used time；
Stable problem for the variform occurred in reply Disturbed Power Systems dynamic process, the measure of emergent control may be
Cut the Traditional controls such as machine, cutting load means and HVDC Modulation, Static Var Compensator (Static Var Compensator,
SVC) the combination of the Novel controls means such as control.
The Traditional control means local emergency control action used time, such as cutting load route, it is being not based on IEC61850
In the substation of standard, the emergent control movement used time is to cut-off the time used to breaker from receiving control command；In base
In the substation of IEC61850 standard, emergent control acts the used time by communicating between safety and stability control device and intelligent terminal
It measures；The Novel control means, such as HVDC Modulation, emergent control act the used time as from control command is received to direct current function
Rate reaches the time constant of control target value, is typically necessary and is measured by live actual tests.
As a kind of preferred embodiment, the control action used time further includes control command transmission under current communication path
To local communication delay, i.e., the control action used time of the described control object is local emergency control action used time and present communications
Control command is transmitted to local the sum of communication delay under path, and control command is transmitted to local under the current communication path
Communication delay includes executing current communication path between station safety and stability control device and control sub-station safety and stability control device
The practical communication delay T of order transmissioncom_subtoexe_abAnd control sub-station safety and stability control device and control main website it is steady safely
Determine the practical communication delay T that current communication path order is transmitted between control devicecom_maintosub_a, communication delay is by control pair
As location decision, specifically,
If control object be located at a-th of control sub-station subordinate b-th executes station, communication delay Tcom_subtoexe_ab
With Tcom_maintosub_aThe sum of；If certain control object is located at a-th of control sub-station, communication delay Tcom_maintosub_a。
As a kind of preferred embodiment, station safety and stability control device and control sub-station safety and stability control device are executed
Between current communication path order transmission practical communication be delayed Tcom_subtoexe_abMeasurement method specifically:
71) safety and stability control device of a-th control sub-station and the safety and stability control device at station is executed for b-th of subordinate
It is synchronous to carry out clock；
72) safety and stability control device of a-th of control sub-station is sent out to b-th of execution of subordinate station safety and stability control device
It send comprising test position and current time index information tabControl command；
73) after b-th of safety and stability control device for executing station receives the control command in step 72), immediately to a
The safety and stability control device of a control sub-station returns to time scale information t when receiving control commandba；
74) b-th of execution of the subordinate station safety and stability control device for calculating a-th of control sub-station receives a-th of control
The practical communication delay T for control command of standingcom_subtoexe_ab=tba-tab；
Step 74) is executed in electricity net safety stable controlling system, and it is steady safely to obtain subordinate's execution station reception control sub-station
Determine the practical communication delay matrix of control device control command:
Wherein, the total K control sub-station of electricity net safety stable controlling system；Q indicates the execution of first control sub-station subordinate
It stands quantity, Q(2)Indicate that second control sub-station subordinate executes station quantity, Q(K)Indicate the execution station number that k-th control sub-station is divided into
Amount.
When power grid is not operating there is no failure, electricity net safety stable controlling system, above-mentioned measurement process is in each control
It is run always in the safety and stability control device at substation and execution station.Due in electricity net safety stable controlling system actual motion mistake
Cheng Zhong, to increase reliability, communication channel used in electricity net safety stable controlling system uses Redundancy Design, due to the side such as detour
Communication physical passage length caused by formula and to pass through communication equipment different, connects same two sets electricity net safety stables control and fills
Time used in the communication channel transmission order set or information may be different.Such as: the station the A station B, it may be at least 2 or more
Communication channel can automatically switch to another channel, therefore need to be grasped actually used communication if a channel is abnormal
The transmission used time in channel ensure that execution station safety and stability control device receives the delay of order practical communication and calculates to the full extent
Accuracy.
It is similar, it is obtained in the same way with step under current communication path, control sub-station security and stability control dress
Set the practical communication delay T for receiving control main website ordercom_maintosub_a, and then obtain controlling in entire safety stabilization control system
System station receives the communication delay of control main website safety and stability control device control command:
{Tcom_maintosub_1,Tcom_maintosub_2,…,Tcom_maintosub_K}
In this embodiment, step 33) control main website safety and stability control device receives and stores control sub-station safety and stability
Each control object operation information for executing station sent on control device, specifically, control main website safety and stability control device receives
Each operation information for executing each control object in station sent on control sub-station safety and stability control device forms power grid control object
Information matrix is as follows, controls main website safety and stability control device with regular time cycle TrefreshRefresh control object information square
Battle array.Wherein, TrefreshIt is adjusted according to engineering demand, it is preferable that the TrefreshAdjusting is the multiple of 0.833ms or 0.833ms,
But it is usually no more than 5ms.
In above-mentioned matrix, EleijkIt is an one-dimensional matrix, indicates { Conabk,Pabk,Tabk}.A indicates control sub-station
Serial number, b indicate certain execution station serial number of i-th of control sub-station subordinate, and k indicates to execute station b-th that a-th of control sub-station is divided into
The serial number of the control object of monitoring；1 control main website and K control sub-station is arranged in electricity net safety stable controlling system；Q indicates the
The execution station quantity of one control sub-station subordinate, Q(2)Indicate that second control sub-station subordinate executes station quantity, Q(K)Indicate k-th
The execution station quantity that control sub-station is divided into；M indicates first that first control sub-station the is divided into control object for executing station monitoring
Quantity, M(2)Indicate second that first control sub-station the is divided into control object quantity for executing station monitoring, and so on, M(Q +Q(2)+…+Q(K))Indicate the Q that k-th control sub-station is divided into(K)A control object quantity for executing station monitoring.TabkFor local control
Object emergent control movement used time and control command are transmitted to local the sum of communication delay, i.e. control action used time, communication is prolonged
When according to control object be in control sub-station or execute station determine.Such as: b of certain control object under a-th of control sub-station
It is a to execute station, then TabkFor Tcom_maintosub_a、Tcom_subtoexe_ab, the sum of local control object emergent control movement used time three；
If certain control object is in control sub-station a, TabkFor Tcom_maintosub_a, both local control object emergent control movement used times it
With.
In general, each execute the station quantity of control object and unequal, matrix column width should be set asThe execution station of the value is not achieved in control object quantity, with { 0,0 ... 0 } polishing.
When for the first time the successive failure covered by safety stabilization control system control scheme list occurs for electric system, control
Main website safety and stability control device processed locks first element fault and T for the previous period occurspreInterior control object information square
Information in battle array, as the subsequent basic information for taking control measure.Wherein, TpreIt can artificially determine, typically, the TpreReally
It is set to 200ms.The first time refers to the first time successive failure in the successive event of dynamic process, does not disturb generation feelings
Electric system under shape is that smoothly, the electric network information obtained before first element fault occurs includes that control object information is
Relatively accurate.The state recognition of control object need time, state recognition result focus on control main website be also required to the time,
When coping with the successive event of very short time inscribed running fire life, need to control main website based on the control pair under the limit grasped
It based on image information, takes and rapidly, continuously controls, therefore lock the up-to-date information before successive event occurs.
When local and remote failure occurs for electric system, the control for being set to control main website safety and stability control device is searched
Policy Table processed obtains control object, and according to the multiple control objects (all kinds of grid equipments) being distributed widely in regional power grid
Response characteristic and responsive time constant coordinated.
As a kind of preferred embodiment, the control object with control sequential mating feature is realized in the step 3)
Wide area coordinated control specific steps are as follows:
Operation information of the main website based on all kinds of control objects 3-1) is controlled, wide area timing coordination is carried out to control object, it will
The total amount to be controlled of all kinds of control objects is allocated in proportion in the control object in different control sub-station sub-ranges,
And determine control object action sequence (such as: control widely distributed similar control object simultaneously operation, non-similar control pair
As simultaneously or chronologically movement etc..Distribution principle and action sequence are determined by offline stability Calculation result), that is, it determines specific to be controlled
Object processed and its control delay are used as control command to be sent to control sub-station；
Control command 3-2) is executed, control main website safety and stability control device acts outlet on the spot, and/or to control sub-station
Safety and stability control device issues control command, and control sub-station executes and to distribution control command of standing is executed, executes station and receive
It is executed after control command.Executing control command is to specific object Obj to be controllediBy control delay TObjiCountdown is carried out, is reached
Outlet is acted after time.
Such as: the control sequential that control strategy filters out is that control object 1 first acts, control object 2 chases after again after 100ms
Add movement；The control action used time of control object 1 is 50ms, the control action used time of control object 2 is 80ms, then controls main website
Send the format of order are as follows: (control object 1,0), (control object 2,70ms).
Wide area timing coordination is the demand of network stability control, is the prior art.
The foregoing is merely the preferred embodiment of the present invention, to illustrate technical solution of the present invention, rather than limit it
System；It is noted that, modifying the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out
Equivalent replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. coping with the emergent control wide area coordination approach of the successive event of dynamic process, which comprises the following steps:
1) control main website safety and stability control device judges operation of power networks side based on the operation information of the key element pre-saved
Formula and operating status；
2) pre-set control scheme list is searched based on grid operation mode, obtains corresponding control pair under current operating conditions
As combination and the total amount to be controlled of all kinds of control objects；
3) based on the control object operation information pre-saved, by the total amount to be controlled of all kinds of control objects in different control sub-stations
It is allocated in proportion in control object in sub-ranges, obtains control command, realizing has control sequential mating feature
Control object wide area coordinated control.
2. the emergent control wide area coordination approach of the reply successive event of dynamic process according to claim 1, feature exist
In the operation information specific method for pre-saving key element is that control sub-station safety and stability control device real-time monitoring is local
The operation information of previously selected key element, and the operation information of previously selected key element is sent to control main website peace
Full stabilization control device；The local previously selected key element operation information of main website safety and stability control device monitoring is controlled, is connect
Receive the operation information of the key element sent on control sub-station safety and stability control device；By the operation of previously selected key element
Information is stored and is periodically flushed；
The operation information of the key element pre-saved in the step 1) is the power train in a successive event of dynamic process
When the successive failure that safety stabilization control system control scheme list is covered occurs for the first time for system, before first element fault occurs
The operation information of key element in preset time.
3. the emergent control wide area coordination approach of the reply successive event of dynamic process according to claim 1, feature exist
In presetting control scheme list method particularly includes:
21) right under every kind of method of operation for the safety stabilization control system that protect the stabilization of power grids under a variety of methods of operation
In previously selected key element, all key elements that may be broken down are based on generation timing sequence and carry out permutation and combination, are obtained
It is combined to all successive failures, the quantity of every kind of method of operation successive failure combination are as follows:Wherein N is to need to identify event
The component population of barrier, i.e., previously selected key element sum；
22) under every kind of method of operation, for each successive failure combination settings control scheme list, specifically: by successive failure
Combine the maximum time interval T in Z between two failures occurred in successionspanIt is divided into X parts to get X time interval, X=is arrived
Tspan/Tdiv, TdivThe minimum interval between two failures occurred in succession is indicated, between two failures occurred in succession
Maximum time interval TspanMinimum interval T between two failures occurred in successiondivIt is preset value, for including m
The successive failure of a failure combines Z, and the time interval between failure occurred in succession based on two combines Z into one to successive failure
Step divides, and obtains the corresponding X of successive failure combination Zm-1A failure betides the successive failure combination side of different time intervals in succession
Control scheme list is arranged for each successive failure combination in formula, i.e. there are X by successive failure combination Zm-1A and successive generation
In the corresponding control scheme list of the failure of different time intervals；The failure occurred in succession is stored in the control scheme list each
The total amount to be controlled of corresponding control object combination and the combination of every class control object under operating status.
4. the emergent control wide area coordination approach of the reply successive event of dynamic process according to claim 1, feature exist
In the method for pre-saving control object operation information specifically:
31) station safety and stability control device real-time monitoring local control object operation information is executed, to control sub-station safety and stability
Control device sends all local control object operation informations；
32) all execution station safety and stability control devices of control sub-station safety and stability control device reception subordinate are monitored all
The operation information of control object, and above- mentioned information are sent to control main website safety and stability control device；
33) control main website safety and stability control device receives and stores each execution sent on control sub-station safety and stability control device
The control object operation information stood, and be periodically flushed by period regular time；
The control object operation information pre-saved in the step 3) is the electric system in a successive event of dynamic process
When the successive failure that safety stabilization control system control scheme list is covered occurring for the first time, first element fault is pre- before occurring
If the control object operation information in the time.
5. the emergent control wide area coordination approach of the reply successive event of dynamic process according to claim 1 or 4, feature
It is, the control object operation information includes the control action used time, and the control action used time includes that control object is locally tight
Anxious control action used time, the control object local emergency control action used time include that the movement of Traditional control means emergent control is used
When and Novel control means emergent control act the used time；
The Traditional control means local emergency control action used time is cut-offs institute's used time to breaker from receiving control command
Between；The Novel control means emergent control movement used time be from receive control command reach control target value time it is normal
Number；
The Traditional control means include cutting machine and cutting load；The Novel control means include HVDC Modulation, static var compensation
Repay device SVC control.
6. the emergent control wide area coordination approach of the reply successive event of dynamic process according to claim 5, feature exist
Further include in, control action used time under current communication path control command be transmitted to local communication delay, i.e., the described control
The control action used time of object processed is that control command is transmitted to local under local emergency control action used time and current communication path
The sum of communication delay, it includes that execute station safety steady that control command, which is transmitted to local communication delay, under the current communication path
Determine the practical communication delay that current communication path order is transmitted between control device and control sub-station safety and stability control device
Tcom_subtoexe_abAnd present communications between control sub-station safety and stability control device and control main website safety and stability control device
The practical communication delay T of path command transmissioncom_maintosub_a, communication delay determines by the location of control object, specifically
Ground,
If control object be located at a-th of control sub-station subordinate b-th executes station, communication delay Tcom_subtoexe_abWith
Tcom_maintosub_aThe sum of；If certain control object is located at a-th of control sub-station, communication delay Tcom_maintosub_a。
7. the emergent control wide area coordination approach of the reply successive event of dynamic process according to claim 6, feature exist
In current communication path order transmission between execution station safety and stability control device and control sub-station safety and stability control device
Practical communication delay Tcom_subtoexe_abMeasurement method specifically:
71) it the safety and stability control device of a-th control sub-station and executes the safety and stability control device at station for b-th of subordinate and carries out
Clock is synchronous；
72) safety and stability control device of a-th of control sub-station sends packet to b-th of execution of subordinate station safety and stability control device
The position containing test and current time index information tabControl command；
73) it after b-th of safety and stability control device for executing station receives the control command in step 72), is controlled immediately to a-th
The safety and stability control device at system station returns to time scale information t when receiving control commandba；
74) b-th of execution of the subordinate station safety and stability control device for calculating a-th of control sub-station receives a-th of control sub-station control
The practical communication delay T of system ordercom_subtoexe_ab=tba-tab。
8. the emergent control wide area coordination approach of the reply successive event of dynamic process according to claim 1, feature exist
In obtaining the to be controlled of corresponding control object combination under current operating conditions and all kinds of control objects in the step 2)
Specific step is as follows for total amount:
2-1) when previously selected key element breaks down, event occurs for control main website safety and stability control device recording element
The time of barrier beats if fault element is located in control sub-station safety and stability control device monitoring range in control sub-station on the spot
Control main website is sent to after upper markers to be recorded；
2-2) control main website safety and stability control device by the faulty sequencing according to generation, line up failure sequence:
{(F_name_1,F_time_1)；(F_name_2,F_time_2)；…(F_name_n,F_time_n)}
Wherein, F_name_1, F_name_2, F_name_n respectively indicate first element title to break down, second hair
The element title of raw failure and the element title to break down for n-th, F_time_1, F_time_2 and F_time_n are respectively indicated
The time of failure of first element to break down, the time of failure of second element to break down and n-th
The time of failure of the element to break down；
2-3) according to pre-set control scheme list in the corresponding inquiry control main website safety and stability control device of failure sequence, obtain
Obtain the total amount to be controlled of corresponding control object combination and all kinds of control objects.
9. the emergent control wide area coordination approach of the reply successive event of dynamic process according to claim 1, feature exist
In realization has the wide area coordinated control specific steps of the control object of control sequential mating feature in the step 3) are as follows:
Operation information of the main website based on all kinds of control objects 3-1) is controlled, wide area timing coordination is carried out to control object, it will be all kinds of
The total amount to be controlled of control object is allocated in proportion in the control object in different control sub-station sub-ranges, and really
Determine the action sequence of control object, that is, determines specific object to be controlled and its control delay as control command and be sent to control
It stands；
Control command 3-2) is executed, specifically, control sub-station executes control command after receiving control command；If object to be controlled
Belong to execution station range, then executes after station receives the control command that control sub-station is sent and execute control command；Execute control life
Order is to be delayed to carry out countdown by control to specific object to be controlled, and outlet is acted after arrival time.
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