CN101588084A - The intelligent reconstruction method of area electric network safety stabilization control system - Google Patents
The intelligent reconstruction method of area electric network safety stabilization control system Download PDFInfo
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- CN101588084A CN101588084A CNA2009100334228A CN200910033422A CN101588084A CN 101588084 A CN101588084 A CN 101588084A CN A2009100334228 A CNA2009100334228 A CN A2009100334228A CN 200910033422 A CN200910033422 A CN 200910033422A CN 101588084 A CN101588084 A CN 101588084A
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Abstract
The invention discloses the intelligent reconstruction method of area electric network safety stabilization control system, intelligent processor or control device that the present invention will be distributed in each transformer station or power plant automatically identify the basis of next interior communication connected state as the control system automatic reconfiguration; By the exchange and the integration of metrical information on the spot of each control station, discern electrical network current topological structure, trend section and safety and stability key link automatically, calculate and form static security control strategy table; With interior communication connected state, operation of power networks state and static security control strategy table auto-associating, realize the automatic selection of electric network fault measuring station, operational mode measuring station and control actuating station, and controlling center, control sub-station and control actuating station are located automatically; By the automatic interaction at controlling center and station, control centre, realize the secondary adjustment of perfect and the affirmation and the control structure of control strategy, finish the automatic reorganization of safety stabilization control system structure.
Description
Technical field
The invention belongs to the Power System and its Automation technical field, the present invention relates to a kind of intelligent reconstruction method of area electric network safety stabilization control system more precisely.
Background technology
For solving a stable problem in the regional power grid, need to be installed in the stabilization control device at a plurality of factories station, link together through passage and Communications Interface Unit, the compositing area electricity net safety stable controlling system, exchange operation information between standing mutually, transmit control command, so that finish on the spot or the execution of distant place control measure.System generally is provided with a main website, a plurality of substation and actuating station.Main website generally is located at hinge electric substation or is in the power plant of hub site, is responsible for gathering the operating condition information at each station, the operational mode of identified region electrical network, and relevant operational mode information is sent to each substation.All control stations are the running status of monitoring system simultaneously, judge the malfunction of the outlet of station, our factory, main transformer, bus, when system breaks down, according to the fault type of judging, search control measure the control strategy table in leaving device in rapidly, implement stable control measure such as cutter, quick closing valve, cutting load, off-the-line by final controlling element.
The formulation of electricity net safety stable control measure and carry out and to adapt with the connected state of communicating by letter between control station with the current operating condition of electrical network.The adaptivity of electricity net safety stable controlling system comprises the adaptivity of control system structure and these two aspects of adaptivity of control strategy.The online decision-premaking technology of emergency control (OPS) has solved under the fixing situation of control system structure, and control strategy is to the adaptability problem of operation of power networks operating mode.Existing stabilizing control system only has function unusual according to detected device or that the communication port abnormal information is carried out automatic blocking and alarm, before unusual the disappearance, and control system forfeiture control ability.Only when the structure of control system and control strategy can both be automatically carry out intelligent reconstruction according to operation of power networks state and communication condition, could thoroughly realize the adaptive control of electricity net safety stable.
Therefore, be badly in need of proposing the intelligent reconstruction method of area electric network safety stabilization control system.
Summary of the invention
The objective of the invention is: the newest fruits that fully merges The present computer technology, power system telecommunications technology and digital transformer substation technology, the structure that overcomes electricity net safety stable controlling system can not be with operation of power networks state and communication condition and the shortcoming of reorganization automatically, and a kind of intelligent reconstruction method that can adapt to the area electric network safety stabilization control system of operation of power networks state and communication condition automatically is provided.
Intelligent processor or control device that the present invention will be distributed in each transformer station or power plant automatically identify the basis of next interior communication connected state as the control system automatic reconfiguration, to guarantee stable reliability and the rapidity of controlling essential real-time measuring data and control command transmission; By the exchange and the integration of metrical information on the spot of each control station, discern electrical network current topological structure, trend section and safety and stability key link automatically, calculate and form static security control strategy table; With interior communication connected state, operation of power networks state and static security control strategy table auto-associating, realize the automatic selection of electric network fault measuring station, operational mode measuring station and control actuating station, and controlling center, control sub-station and control actuating station are located automatically; By the automatic interaction at controlling center and station, control centre, realize the secondary adjustment of perfect and the affirmation and the control structure of control strategy, finish the automatic reorganization of safety stabilization control system structure.The method of selecting adaptation scheme and realize system reconfiguration in the control system structure of storage in advance and control strategy table candidate collection has also been contained automatically in this invention simultaneously.
Specifically, the present invention takes following technical scheme to realize, comprises the following steps:
1) be distributed in the intelligent processor in each transformer station or power plant or control device in the regional power grid by unified markers collection with compile the running status real time information of local power system component, the fault form of recognition component establishes a communications link with communication network.
2) intelligent processor at each factory station or the control device network type broadcasting that communicates cue and receiving.To satisfying the time-delay of communication port one-way transmission≤150 milliseconds and the error rate≤10
-7The interior communication state of index is designated as the communication connected state, and call duration time between recording station, otherwise, be designated as the not connected state of communicating by letter, and put the interior communication time for infinitely great.
Set up the interior communication logic state connection matrix of regional power grid, the all corresponding system's website arranged by same order of its row and column, the numerical value of each diagonal element of matrix is 0, and the numerical value of off-diagonal element is the one-way communication time between the website of its place row and column correspondence.When two station communications were not communicated with, corresponding off-diagonal element value was infinitely great.
Calculate the communication degree of communication at each factory station.The communication degree of communication of the station i of factory is the inverse of the capable all elements numerical value sum of the i of interior communication logic state connection matrix.
With other station exchange transformer station of factory or station capacity information.
3) intelligent processor at each factory station or control device calculate the interim suitability degree index MCSS1 of main website at each station automatically
i, and the transformer station of this index value maximum elected be interim controlling center.The interim suitability degree index MCSS1 of main website of the station i of factory
iMultiply by the communication degree of communication at this factory station for our station power transformation capacity.
4) intelligent processor or the control device at each factory station will be delivered to interim controlling center on the metrical information on the spot.
5) intelligent processor of interim controlling center or the artificial setting sign that control device judges whether to be undertaken by the prediction scheme of prior formulation control system reconstruct, if have, then according to the interior communication state, directly select to call control system structure and the control strategy table that is stored in advance in intelligent processor or the control device, execution in step 10), otherwise, carry out power network topology analysis and trend section and integrate, form the current running status of digitized electrical network.
6) intelligent processor or the control device of interim controlling center are discerned electricity net safety stable key link and weak link automatically by the shortcut calculation based on static security analysis, calculate and form static security control strategy table automatically.Trend is calculated and control strategy calculates the shortcut calculation that adopts based on the DC power flow algorithm.
7) intelligent processor of interim controlling center or control device will be in the control strategy table electric network fault element and the pairing factory of types index item station as the electric network fault measuring station, the pairing factory of power network topology and trend index entry station is as the operational mode measuring station, and the pairing factory of control strategy result items station is as the control actuating station.
8) intelligent processor or the control device of interim controlling center communicate check by the control strategy table, guarantee the pairing fault detect of any one electric network fault station, and the operational mode measuring station in control decision information needed source and the final logic connected state of implementing to guarantee between the required control actuating station communication that moves of control, otherwise this strategy can not be as effective control strategy, and corresponding factory station can not be as the part of control system.
9) intelligent processor or the control device of interim controlling center split formation several control strategy tables by fault detect station index automatically with the control strategy table, calculate the suitability degree index MCSS2 of main website at each fault detect station automatically
i, and the fault detect station of this index value maximum is defined as controlling center, and power plant that control measure such as cutter, cutting load are implemented or transformer station station are as the control actuating station, and all the other transformer stations are as control sub-station.
The suitability degree index MCSS2 of main website of fault detect station i
iThe interim suitability degree index MCSS1 of main website for our station
iWith the local fault element information number in the our station control strategy table, the product of distant place trend section information number.
10) intelligent processor of interim controlling center or control device send to each factory station with the division of labor location situation of controlling center, control sub-station, control actuating station, be sent to control corresponding substation and actuating station respectively with splitting the control strategy table that forms, thereby finish the preliminary reorganization of safety stabilization control system structure by fault detect station index.
11) intelligent processor of controlling center or control device will send the station, control centre on control system structure and control strategy table and the distribution situation thereof.
12) intelligent processor of controlling center or control device receiving scheduling central station issue contains static security and the stable detailed control strategy table of merit angular frequency voltage, according to detailed control strategy table to control structure set by step 7)-11) carry out the secondary adjustment, finish the automatic reorganization of safety stabilization control system structure.
Beneficial effect of the present invention is as follows: the invention provides the structure that realizes area electric network safety stabilization control system and control strategy carry out intelligent reconstruction automatically according to operation of power networks state and communication condition method, be of value to the adaptive control of thorough realization electricity net safety stable, promote the practicability of intelligent grid technology.The present invention is specially adapted to guarantee the validity and the reliability of the area electric network safety stabilization control of electrical network after suffering burst fire-disaster, prevents that the forfeiture of the area electric network safety stabilization control ability that causes owing to burst fire-disaster or the inadaptability of control strategy from causing further stability disruption and large area blackout.
Description of drawings
Fig. 1 is the flow chart of the inventive method.
Embodiment
Below in conjunction with accompanying drawing 1, the inventive method is described in detail.
What step 1 was described among Fig. 1 is, be distributed in the intelligent processor in each transformer station or power plant or control device in the regional power grid by unified markers collection with compile the running status real time information of local power system component, the fault form of recognition component establishes a communications link with communication network.
Step 2 realizes among Fig. 1: network type broadcasting and reception that the intelligent processor at (1) each factory station or control device communicate cue.(2) to satisfying the interior communication state of communication port one-way delay≤150 millisecond and the error rate≤10-7 index, be designated as the communication connected state, and call duration time between recording station, otherwise, be designated as the not connected state of communicating by letter, and put the interior communication time for infinitely great.(3) set up the interior communication logic state connection matrix of regional power grid, the all corresponding system's website arranged by same order of its row and column, the numerical value of each diagonal element of matrix is 0, and the numerical value of off-diagonal element is the one-way communication time between the website of its place row and column correspondence.When two station communications were not communicated with, corresponding off-diagonal element value was infinitely great.(4) calculate the communication degree of communication that each factory stands, the communication degree of communication of the station i of factory is the inverse of the capable all elements numerical value sum of the i of interior communication logic state connection matrix.(5) with other station exchange transformer station of factory or station capacity information.
Step 3 realizes among Fig. 1: the intelligent processor or the control device at (1) each factory station calculate the interim suitability degree index MCSS1 of main website at each station automatically
i, i.e. our station power transformation capacity multiply by the communication degree of communication at this factory station.(2) transformer station of this index value maximum being elected is interim controlling center.
The intelligent processor or the control device at each factory station of step 4 realization will be delivered to interim controlling center on the metrical information on the spot among Fig. 1.
What step 5 was described among Fig. 1 is, the intelligent processor of interim controlling center or the artificial setting sign that control device judges whether to be undertaken by the prediction scheme of prior formulation control system reconstruct, if have, then according to the interior communication state, directly select to call control system structure and the control strategy table that is stored in advance in intelligent processor or the control device, execution in step 10), otherwise, carry out power network topology analysis and trend section and integrate, form the current running status of digitized electrical network.
What step 6 was described among Fig. 1 is that the intelligent processor of interim controlling center or control device adopt the shortcut calculation based on the DC power flow algorithm, discern electricity net safety stable key link and weak link automatically, calculate and form static security control strategy table automatically.
Step 7 realization electric network fault measuring station, operational mode measuring station and control actuating station are located automatically among Fig. 1, be the intelligent processor of interim controlling center or control device will be in the control strategy table electric network fault element and the pairing factory of types index item station as the electric network fault measuring station, the pairing factory of power network topology and trend index entry station is as the operational mode measuring station, and the pairing factory of control strategy result items station is as the control actuating station.
Step 8 realizes the communication check and correction of control strategy table among Fig. 1, the intelligent processor or the control device that are interim controlling center communicate check by the control strategy table, guarantee the pairing fault detect of any one electric network fault station, and the operational mode measuring station in control decision information needed source and the final logic connected state of implementing to guarantee between the required control actuating station communication that moves of control, otherwise this strategy can not be as effective control strategy, and corresponding factory station can not be as the part of control system.
Step 9 realizes among Fig. 1: the intelligent processor or the control device of (1) interim controlling center split formation several control strategy tables by fault detect station index automatically with the control strategy table.(2) calculate the suitability degree index MCSS2 of main website at each fault detect station automatically
i, i.e. the interim suitability degree index MCSS1 of main website of our station
iWith the local fault element information number in the our station control strategy table, the product of distant place trend section information number.(3) the fault detect station with this index value maximum is defined as controlling center, and power plant that control measure such as cutter, cutting load are implemented or transformer station station are as the control actuating station, and all the other transformer stations are as control sub-station.
What step 10 was described among Fig. 1 is, the intelligent processor of interim controlling center or control device send to each factory station with the division of labor location situation of controlling center, control sub-station, control actuating station, be sent to control corresponding substation and actuating station respectively with splitting the control strategy table that forms, thereby finish the preliminary reorganization of safety stabilization control system structure by fault detect station index.
Step 11 realizes that the intelligent processor or the control device of controlling center will send the station, control centre on control system structure and control strategy table and the distribution situation thereof among Fig. 1.
Step 12 realizes among Fig. 1: intelligent processor of (1) controlling center or control device receiving scheduling central station issue contains static security and the stable detailed control strategy table of merit angular frequency voltage.(2) according to detailed control strategy table to control structure set by step 7)-11) carry out the secondary adjustment, finish the automatic reorganization of safety stabilization control system structure.
In a word, the present invention automatically identifies the basis of next interior communication connected state as the control system automatic reconfiguration with intelligent processor or the control device that is distributed in each transformer station or power plant, by the exchange and the integration of metrical information on the spot of each control station, automatically static security control strategy table is calculated and formed to identification electrical network current topological structure, trend section and safety and stability key link; With interior communication connected state, operation of power networks state and static security control strategy table auto-associating, realize the automatic selection of electric network fault measuring station, operational mode measuring station and control actuating station, and controlling center, control sub-station and control actuating station are located automatically; By the automatic interaction at controlling center and station, control centre, realize the secondary adjustment of perfect and the affirmation and the control structure of control strategy, finish the automatic reorganization of safety stabilization control system structure.The method of selecting adaptation scheme and realize system reconfiguration in the control system structure of storage in advance and control strategy table candidate collection has also been contained automatically in this invention simultaneously.
Claims (9)
1, the intelligent reconstruction method of area electric network safety stabilization control system is characterized in that, comprises the following steps:
1) be distributed in the intelligent processor in each transformer station or power plant or control device in the regional power grid by unified markers collection with compile the running status real time information of local power system component, the fault form of recognition component establishes a communications link with communication network;
2) intelligent processor at each factory station or the control device network type broadcasting that communicates cue and receiving, call duration time between recording station, set up the interior communication logic state connection matrix of regional power grid, calculate the communication degree of communication at each factory station, and exchange transformer station or station capacity information;
3) intelligent processor at each factory station or control device calculate the interim suitability degree index MCSS1 of main website at each station automatically
i, and the transformer station of this index value maximum elected be interim controlling center;
4) intelligent processor or the control device at each factory station will be delivered to interim controlling center on the metrical information on the spot;
5) intelligent processor of interim controlling center or the artificial setting sign that control device judges whether to be undertaken by the prediction scheme of prior formulation control system reconstruct, if have, then according to the interior communication state, directly call the control system structure and the control strategy table that are stored in advance in intelligent processor or the control device, execution in step 10), otherwise, carry out power network topology analysis and trend section and integrate, form the current running status of digitized electrical network;
6) intelligent processor or the control device of interim controlling center are discerned electricity net safety stable key link and weak link automatically by the shortcut calculation based on static security analysis, calculate and form static security control strategy table automatically;
7) intelligent processor of interim controlling center or control device will be in the control strategy table electric network fault element and the pairing factory of types index item station as the electric network fault measuring station, the pairing factory of power network topology and trend index entry station is as the operational mode measuring station, and the pairing factory of control strategy result items station is as the control actuating station.
8) intelligent processor or the control device of interim controlling center communicate check by the control strategy table, guarantee the pairing fault detect of any one electric network fault station, and the operational mode measuring station in control decision information needed source and the final logic connected state of implementing to guarantee between the required control actuating station communication that moves of control, otherwise this strategy can not be as effective control strategy, and corresponding factory station can not be as the part of control system;
9) intelligent processor or the control device of interim controlling center split formation several control strategy tables by fault detect station index automatically with the control strategy table, calculate the suitability degree index MCSS2 of main website at each fault detect station automatically
i, and the fault detect station of this index value maximum is defined as controlling center, and power plant that control measure such as cutter, cutting load are implemented or transformer station station are as the control actuating station, and all the other transformer stations are as control sub-station;
10) intelligent processor of interim controlling center or control device send to each factory station with the division of labor location situation of controlling center, control sub-station, control actuating station, be sent to control corresponding substation and actuating station respectively with splitting the control strategy table that forms, thereby finish the preliminary reorganization of safety stabilization control system structure by fault detect station index;
11) intelligent processor of controlling center or control device will send the station, control centre on control system structure and control strategy table and the distribution situation thereof;
12) intelligent processor of controlling center or control device receiving scheduling central station issue contains static security and the stable detailed control strategy table of merit angular frequency voltage, according to detailed control strategy table control structure is pacified step 7)-11) carry out the secondary adjustment, finish the automatic reorganization of safety stabilization control system structure.
2, the intelligent reconstruction method of area electric network safety stabilization control system according to claim 1, it is characterized in that, described step 2) source address and destination address are only adopted in the identification that the interior communication logic state in is communicated with, and satisfy the time-delay of communication port one-way transmission≤150 milliseconds and the error rate≤10 simultaneously
-7Requirement.
3, the intelligent reconstruction method of area electric network safety stabilization control system according to claim 1, it is characterized in that the trend in the described step 6) in intelligent processor or the control device is calculated and control strategy calculates the shortcut calculation that adopts based on the DC power flow algorithm.
4, the intelligent reconstruction method of area electric network safety stabilization control system according to claim 1 is characterized in that, described step 6) joins the interior communication connected state in traditional control strategy table as the key feature amount.
5, the intelligent reconstruction method of area electric network safety stabilization control system according to claim 1, it is characterized in that, described step 2) in, the all corresponding system's website arranged by same order of the row and column of interior communication logic state connection matrix, the numerical value of each diagonal element of matrix is 0, and the numerical value of off-diagonal element is the one-way communication time between the website of its place row and column correspondence; When two station communications were not communicated with, corresponding off-diagonal element value was infinitely great.
6, the intelligent reconstruction method of area electric network safety stabilization control system according to claim 1 is characterized in that, the communication degree of communication of the station i of factory is the inverse of the capable all elements numerical value sum of the i of interior communication logic state connection matrix.
7, the intelligent reconstruction method of area electric network safety stabilization control system according to claim 1 is characterized in that, the interim suitability degree index MCSS1 of main website of the station i of factory
iMultiply by the communication degree of communication at this factory station for our station power transformation capacity.
8, the intelligent reconstruction method of area electric network safety stabilization control system according to claim 1 is characterized in that, the suitability degree index MCSS2 of main website of fault detect station i
iThe interim suitability degree index MCSS1 of main website for our station
iWith the local fault element information number in the our station control strategy table, the product of distant place trend section information number.
9, the intelligent reconstruction method of area electric network safety stabilization control system according to claim 1, it is characterized in that, interim controlling center also can be according to the interior communication state, directly select to call control system structure and the control strategy table that is stored in advance in intelligent processor or the control device, carry out control system reconstruct.
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