CN103633646B - A kind of reconstructing method of ship integrated power system - Google Patents
A kind of reconstructing method of ship integrated power system Download PDFInfo
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Abstract
The invention provides a kind of reconstructing method of ship integrated power system, the method utilizes the analysis of figure mark, general type algorithm and sets theory to design ship integrated power system reconfiguration scheme.Employing figure mark analytical method sets up ship integrated power system graph model, and is stored in a computer; Iterator is utilized to come managing power system diagram model topology structure and implementation algorithm.The present invention can process the reconstruction that the electric power system with loop and load thereof have multipriority, recovers the power supply of load as much as possible under the prerequisite ensureing high priority load supplying.
Description
Technical field
The present invention relates to the electric power system reconstruction field of combined power boats and ships, specifically a kind of reconstructing method of ship integrated power system.
Background technology
Boats and ships sent out power supply and advance electricity consumption, ship-borne equipment electricity consumption integrated, realizing generating, distribution and electric propulsion electricity consumption and miscellaneous equipment electricity consumption United Dispatching and central controlled system, i.e. ship integrated power system (IPS).Bad environments residing for boats and ships, many important power consumption equipments on ship, therefore should be able to the power supply of quick-recovery dead electricity load soon when electric power system is broken down or damage once dead electricity will have a strong impact on the safety of boats and ships, to improve the fail safe of boats and ships.Electric power system reconstruct is the important way of fast recovery of power supply, and its basic task is meeting under the constraintss such as power system capacity restriction and stability, recovering the power supply of dead electricity load to greatest extent.And ship integrated power system is a reconfigurable network system being integrated with loop, for such large-scale complicated system, the research of power system modeling method to restructing algorithm has a direct impact.
There is some problems in the reconfiguration scheme at present for fault recovery, the such as priority number of some design to network load has done to limit and (usually only load has been divided into important, secondary important and insignificant three class), and forbid the priority changing load, then cannot the optimality of assured plan; Fault recovery problem is converted into Mathematical Modeling by many fault recovery methods, needs to carry out matrix operation or linear programming to determine failure reconfiguration scheme, thus reduces rapidity system being changed to response; Also have certain methods exceedingly to simplify electrical network Mathematical Modeling, some key property of electrical network can not be showed, this must decrease gained scheme is optimum possibility; Fault recovery problem describes with matrix and represents by many designs, always utilize the Mathematical Modeling of system to analyze and study fault recovery problem, so only effectively can solve the fault recovery reconstruction of radial system, and avoid the system failure recovery problem with loop.And the primary goal that Ship Electrical Power System is considered recovers load supplying, especially preferentially to ensure the power supply of important load, and very high request is proposed to the rapidity of fault recovery.The present invention, under figure mark analysis modeling technology and general type analysis pattern, can overcome above-mentioned deficiency.
Summary of the invention
The invention provides a kind of reconstructing method of ship integrated power system, the reconstruction that the electric power system with loop and load thereof have multipriority can be processed, under the prerequisite ensureing high priority load supplying, recover the power supply of load as much as possible.
A kind of reconstructing method of ship integrated power system, it adopts figure mark analytical method to set up ship integrated power system figure mark analytical model, described figure mark analytical model is divided into graphical model and mathematical model, utilizes the topological relation between figure of power system mark analyzed pattern model analysis power system component and operating process thereof; Figure of power system mark is analyzed mathematical model and is stored in computer container, the polyalgorithm of various computing function has been had outside container, described polyalgorithm is by the assembly in iterator traversal container, to obtain required module information, and result of calculation is assigned to corresponding assembly, iterator is all over pointing to another assembly from an assembly, and Reusability iterator of the same type can follow the tracks of collection by generation component; Assembly or the system information of measuring equipment measurement gained are also assigned to corresponding assembly by iterator, to realize the real-time update of topological relation between power system component information and assembly; Described reconstructing method comprises the steps:
Step one, constantly checked by iterator and the state information of each assembly after load power down information being detected, create load collection to be restored;
Step 2, calculate gross power needed for load to be restored and system available horsepower sum respectively, if system current available power is less than required gross power, then start corresponding stand-by power supply;
Step 3, the load that selection load centralization priority is the highest, recover from this limit priority load; Once only recover the power supply of a load, then press load priority descending order and recover load supplying;
All standby recovery paths mark of load selected by step 4, foundation and search, namely searches, until run into reference source or power supply along the restoration path pointed by each iterator of this load;
Step 5, check the component states of each restoration path mark, if there is the status attribute failure state of assembly, then this restoration path mark is invalid;
Step 6, judge respectively whether can have enough available horsepowers by restoration path, if there is multiple restoration path to meet the demands, then the restoration path mark that selector switch number of operations is minimum, as can restoration path, then forwards step 8 to;
Step 7, for the required load restored electricity, if do not have a restoration path independently for it provides enough electric energy, then according to the principle of switching manipulation least number of times, to select two or more path to power for this load simultaneously; If also there is no suitable restoration path, forward step 11 to;
Step 8, according to assembly in this restoration path mark against order, starting power converter or Closing Switch device successively, the first Operating In Persistent Current Mode of power inverter namely far away apart from load to be restored or switching device;
Step 9, after this load supplying recovers, check whether the constraints of associated component meets, if meet constraints, forwards step 11 to; Otherwise forward step 10 to;
Step 10, from affected lowest priority and minimum power load, perform load shedding, once only unload a load, until institute's Prescribed Properties meet;
Step 11, the never load centralization that restores electricity delete this load, then forward step 3 to.
The reconstructing method of ship integrated power system as above, the attribute of assembly comprises combined properties, the constraints relevant to the stability of a system and fail safe, current operating state and condition of work, topological structure relation between assembly, in system practical work process, these attributes of assembly carry out real-time update by iterator.
The reconstructing method of ship integrated power system as above, described combined properties comprises the identifier of assembly, whether component type, the priority of assembly, assembly can carry out the operation of "ON" "Off"; Described constraints comprises the maximum power of assembly, the safe voltage limit of assembly, current operating state and condition of work comprise power, the voltage of assembly, the electric current of assembly, available horsepower, the component states of assembly, and between assembly, topological structure relation comprises the forward direction mark relevant to assembly, backward mark, feeder line path mark, fraternal mark and adjacent mark assembly.
All component in the algorithm traversal container of the present invention outside container, under general type analysis pattern, dividing the work different researchers can share a unified system model, i.e. figure mark analytical model, plan, the research of the aspects such as design, real-time operation and control, can shorten the construction cycle like this, reduces modeling cost and maintenance cost.
Accompanying drawing explanation
Fig. 1 is algorithm of the present invention, graph of a relation between iterator and container;
Fig. 2 is the ship integrated power system simplified model figure of region power distribution mode;
Fig. 3 is the ship integrated power system GTA graphical model figure of region of the present invention power distribution mode;
Fig. 4 is the GTA graphical model figure after example 1 of the present invention load is broken down;
Fig. 5 is the GTA graphical model figure after example 1 load restoration of the present invention is powered;
Fig. 6 is the GTA graphical model figure after example 2 of the present invention load is broken down;
Fig. 7 is the GTA graphical model figure after example 2 load restoration of the present invention is powered.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.
The invention provides a kind of reconstructing method of ship integrated power system, comprise the steps
First, employing figure mark analytical method sets up ship integrated power system figure mark analytical model, and described figure mark analytical model is divided into graphical model and mathematical model, and namely figure of power system mark analyzed pattern model and figure of power system mark analyze mathematical model; In figure mark analytical model, electric power system topological structure is made up of limit.A limit in each assembly corresponding diagram in system, namely figure mark analytical model is a limit-edge graph shape, establish one-to-one relationship between limit in assembly like this in physical system and figure mark analytical model, utilize the topological relation between figure of power system mark analyzed pattern model analysis power system component and operating process thereof.Figure mark analytical technology figure of power system mark is analyzed mathematical model be stored in more with better function than array in computer software, more flexibly in container, topological structure and the component parameter of figure mark analytical model dynamically update with the change of electric power system.
Secondly, electric power system topological structure and implementation algorithm in iterator Manage Containers is adopted.In order to represent the topological relation between power system component, figure mark analytical technology defines five kinds of iterators: forward direction iterator, backward iterator, feeder line path iterator, fraternal iterator, adjacent iterator.They point to another assembly from an assembly respectively.The analysis of figure mark uses iterator to travel through the limit of storage figure in a reservoir, i.e. power system component object.And Reusability iterator of the same type can follow the tracks of collection, i.e. mark by generation component, that is, often kind of trace description of assembly follows the tracks of a specific chained list of power system component, is also the order of algorithm process system component, such as, and five kinds of marks of assembly p
The forward direction mark component sequence of FTp=from assembly p
The backward mark component sequence of FPTp=from assembly p
The feeder line path mark component sequence of FTp=from assembly p
The fraternal mark component sequence of BRTp=from assembly p
The adjacent mark component sequence of ADJPp=from assembly p
Finally, based on figure mark analysis and designation Ship Electrical Power System failure reconfiguration algorithm.In order to carry out the needs of electric power system restructing algorithm analysis and design, for figure mark analytical model, the constituent element (tuple) that each assembly C can have multiple component with one represents, the underlying attribute of assembly is defined in constituent element, as combined properties, the constraints relevant to the stability of a system and fail safe, current operating state and condition of work, topological structure relation between assembly, constraints can be calculated in real time by the algorithm outside container, also can be calculated in advance and be stored in the constituent element of each assembly.Such as, the constituent element of an assembly C can be defined as C={p, type, Pri, Op, Pmax, VLmin, VLmax, P, ft, fpt1, fpt2, bt1, bt2, brt, adjt1, adjt2, VL, Ic, Status, Ap}
Here, the identifier of p=assembly
Type=component type { load, power supply, switch or bus }
The priority of Pri=assembly
Whether Op=assembly can carry out "ON" "Off" operation-YES, NO
The maximum power of Pmax=assembly
The safe voltage limit of VLmin, VLmax=assembly, Vlmin≤VL≤VLmax
The power of P=assembly, P≤Pmax, obtains by calculating or measuring
According to ship integrated power system network topology feature, to iterator, feeder line path iterator and adjacent iterator after two groups can being defined in constituent element C
Ft, fpt1, fpt2, bt1, bt2, brt, adjt1, adjt2=points to forward direction iterator, backward iterator 1, backward iterator 2, feeder line path iterator 1, feeder line path iterator 2, fraternal iterator, adjacent iterator 1, assembly that adjacent iterator 2 is relevant to C respectively, and iterator value is 0, shows that pointed assembly does not exist.
The voltage (obtaining by calculating or measuring) of VL=assembly
The electric current (obtaining by calculating or measuring) of Ic=assembly
Status=assembly situation-ON, OFF, FAILED(open, and close, and lose efficacy)
Ap=available horsepower
This constituent element C reflects the underlying attribute of assembly p, as the type (indicating that this assembly is load, power supply, switch or bus) of assembly, network topology structure relation, the information such as condition of work and current state, like this by the constituent element attribute (component) of access component, the trace set computing that algorithm calculates can be reconstructed.
Each assembly has unique identifier, and iterator can be assigned to assembly parameter value many arbitrarily by identifier, and the parameter of itself can be inputted by external measurement devices, and iterator is also used to manage the externally measured and operating data relevant to assembly.When occurring in system adding, amendment, when deleting or change component states, their iterator can upgrade automatically, Fig. 1 describes algorithm, relation between iterator and container, as can be seen from Figure 1, total n algorithm, they divide the work difference, wherein, some algorithms utilize iterator to obtain the data of assembly in container, and result of calculation are assigned to the corresponding assembly in container by iterator, so that these data of the use of other algorithm, these algorithms to have been worked the calculating of component parameter and the real-time update of information thereof together by container; But there is an algorithm to need to search and select the process of suitable restoration path.
Namely aforementioned figure of power system mark analyzes mathematical model is represented by the constituent element with multiple component by each assembly in system, and each assembly underlying attribute (component of constituent element) is defined, and store in a reservoir, the value of assembly underlying attribute upgrades by iterator.
Occurring under powering-off state, designed electric power system fault restructing algorithm step is following (for the ease of writing and reading, this algorithm is with a kind of formal modeling language OCL [ObjectConstraint Language] language representation, have nothing to do with concrete programming language, when Project Realization, concrete programming language can be adopted realize, as C, C++ or JAVA etc.):
Step1. algorithm constantly checks the state information of each assembly by iterator, after load power down information being detected, creates load collection FC to be restored
FC=FT→select(p|p→Status==OFF)
Here Status is the attribute of iterator p, represents the operating state of this assembly, and above formula is off-position.Be used herein the arrow operator " → " of OCL.When it acts on a set, this operator operates each object in set; When acting on an assembly, this operator is used to the value selecting component property.
Step2. calculate gross power needed for load to be restored (all needs recovers bearing power sum) and system available horsepower sum respectively, if system current available power is less than required gross power, then should start corresponding stand-by power supply immediately;
Step3. select the load that load collection FC medium priority is the highest, recover from this limit priority load; Once only recover the power supply of an assembly, then press load priority descending order and recover load supplying
Loads→order(p<q if p→pri>q→pri）
The identifier of p, q=assembly
The priority attribute of Pri=assembly;
Step4. set up and search all standby recovery paths mark of selected assembly or load p, i.e. the feeder line path mark of this assembly, backward mark and adjacent mark; These path marks are until run into reference source or power supply.
Step5. the component states of each restoration path mark is checked, if there is the status attribute of assembly to be Status==FAILED(and failure state), then this restoration path mark is invalid, otherwise this restoration path mark is can restoration path.
Step6. judge respectively whether can have enough available horsepowers by restoration path, if there is multiple restoration path to meet the demands, then the restoration path mark that selector switch number of operations is minimum is as can restoration path; Forward Step8 to;
Step7. for the required load restored electricity, if do not have a restoration path independently for it provides enough electric energy, then according to the principle of switching manipulation least number of times, to select two or more path to power for this load simultaneously; If also there is no suitable restoration path, forward Step11 to;
Step8. according to assembly in this restoration path mark against order, starting power converter or Closing Switch device successively;
Step9., after this load supplying recovers, check whether the constraints of associated component meets, if meet constraints, forwards step11 to; Otherwise forward Step10 to;
Step10. from affected lowest priority and minimum power load, perform load shedding, once only unload a load, until institute's Prescribed Properties meets;
Step11. never restore electricity in load collection FC and delete this load, then forward Step3 to.
The invention has the advantages that: use iterator (Iterator) to be the main feature that figure mark analytical technology is different from other method, the algorithm outside container can by all component in its traversal container.Under general type analysis pattern, dividing the work different researchers can share a unified system model, i.e. figure mark analytical model, plan, the research of the aspects such as design, real-time operation and control, can shorten the construction cycle like this, reduces modeling cost and maintenance cost.
Because general type analysis and figure mark analytical technology have the flexibility of decomposing challenge, make the working method of the working method of system diagram mark analytical model and actual physics system closely similar, namely figure mark analytical model can simulate working method and the course of work of actual physics system.
Fig. 2 is the ship integrated power system simplified model of region power distribution mode.In Fig. 2,9,15,22,12,18,25 is the power inverter (SSCM) of different electric pressure; 1,31 is alternating current generating sets; 2,7,8,27,28,30 is transmission line and bus; 3,32 is pulse load, and 4,5 and 33,34 for advancing load; 6,29 is AC-DC power supply (PS).13,14,19,20,21,26 is bus circuit breaker, and 10,16 and 23 are respectively constant power load, motor or other use electric loading.SSCM represents vessel power converter.
Because reconstruction mainly pays close attention to electric energy loaded demand and power supply module, Ship Electrical Power System model complicated like this can only represent by the load shown in Fig. 3 and power pack.In Fig. 3 system diagram mark analytical model, represent element or the equipment of system with line segment "-"; The end of line segment "-" or the intermediate node (being mainly used in the differentiation between line segment) of line segment is represented with " "; Represent that element or equipment are in disconnection or stopped status with " ο ".
In order to above-mentioned restructing algorithm is described, employing two typical examples illustrate by this part, once only allow the power supply of a recovery load according to the priority of load.
Example 1: wall scroll restoration path
As shown in Figure 4, the real number on load side is its rated power; Real number representation power capacity (left side) and available horsepower (right side) in the square brackets of bus side.
In system operation, if power inverter 6 breaks down, cause load 10,16 that power breakdown occurs.Then first restructing algorithm is set up load collection to be restored { 10,16}, and sorting according to load priority is supposed that the priority of load 16 is higher than load 10, then the power supply of priority restores load 16.Due to the symmetry of Ship Electrical Power System, each load has two backward, feeder lines and adjacent restoration path respectively, then the restoration path component sequence that load 16 is possible is
B116=16→17→18→14→8→6→2
B216=16→17→15→13→7→6→2
FPT116=16→17→18→14→8→6→2
FPT216=16→17→15→13→7→6→2
ADJP116=16→17→15→19
ADJP216=16→17→18→20→26→28
Then, along each restoration path mark of above-mentioned load 16, check whether each component property is " losing efficacy (FAILED) " state, if any the assembly that attribute is " inefficacy " state, then this restoration path is invalid, because assembly 6 attribute is " inefficacy " state in this example, then restoration path B116, B216, FPT116 and FPT216 is invalid, only has adjacent mark ADJP116 and ADJP216 can as restoration path.As seen from Figure 4, available horsepower on 19 and 28 is 10.0, all be greater than the power demand of load 16, then the assembly mark ADJP116 that selector switch number of operations is minimum as restoration path, then, from 19, against mark ADJP116 direction, close respectively and start circuit breaker 19 and power inverter 15, then checking whether each assembly meets its constraints (as electric current, voltage and power etc.), such as assembly 15 need meet constraints
M→collect((15→f≥15→c)→size==0)
If there is not meeting constraints, from the section of low priority and minimum load, repeating load shedding, once only unloading a load, until institute's Prescribed Properties is all met.Then delete load 16 from power supply load centralization to be restored, then recover the power supply of load 10, recovery process and the said process of load 10 are similar.Network after failure reconfiguration as shown in Figure 5.
Situation 2: many restoration paths
As shown in Figure 6, in power system operation process, a certain of left side alternating current generating sets breaks down, and protectiveness power-off occurs in load 16.First restructing algorithm sets up fault recovery load collection, and { 16} recovers the power supply of load 16.According to the step of the 3rd part, the fail-over path component sequence of search overhead 16
B116=16→17→18→14
B216=16→17→15→13→7
FPT116=16→17→18→14
FPT216=16→17→15→13→7
ADJP116=16→17→15→19
ADJP216=16→17→18→20→26→28
Assembly 7, 14, 19 and 28 is monolateral charged assembly, along each restoration path of load 16, check that each path components attribute is with or without " inefficacy " state, be " inefficacy " state if any attribute, i.e. Status==FAILED, then this restoration path is invalid, in this example, non-assembly attribute is " inefficacy " state path, reexamine the available horsepower of each restoration path mark, because the available horsepower on each restoration path mark is all less than the rated power 5.0 of load 16, back up these paths, then according to switching manipulation least number of times principle, select many marks as reconstruct path, in addition, from constraints d), at B116 and B216, FPT116 and FPT216, in ADJP116 and ADJP216, respectively only can select one as restoration path, this example selects FPT216 and ADJP116 two bar assembly mark as the restoration path of load 16, their available horsepower sums 6.0, be greater than the rated power of load 16.Then, against each assembly mark direction, progressively close circuit breaker 7,13 and 19, then starts 15, and check whether each assembly meets its constraints, the network after failure reconfiguration as shown in Figure 7.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (3)
1. the reconstructing method of a ship integrated power system, it is characterized in that: employing figure mark analytical method sets up ship integrated power system figure mark analytical model, described figure of power system mark analytical model is divided into electric power system figure model and electric power digital model, utilize the topological relation between electric power system figure model analysis power system component and operating process thereof, electric power system figure model be by abstract for Ship Electrical Power System be a limit---edge graph shape, wherein, a limit in each assembly corresponding diagram in electric power system, one-to-one relationship is established between limit in assembly in such electric power system and electric power system figure model, each assembly in electric power system is represented by the constituent element with multiple component by electric power digital model, and the annexation between the underlying attribute of each assembly and assembly is defined, electric power digital model storage is in computer container, the polyalgorithm of various computing function has been had outside container, described polyalgorithm is by the assembly in iterator traversal container, to obtain required module information, and result of calculation is assigned to corresponding assembly, assembly or the system information of measuring equipment measurement gained are also assigned to corresponding assembly by iterator, to realize the real-time update of topological relation between power system component information and assembly, described reconstructing method comprises the steps:
Step one, algorithm constantly check the state information of each assembly by iterator, after load power down information being detected, create load collection to be restored;
Step 2, calculate gross power needed for load to be restored and system available horsepower sum respectively, if system current available power is less than required gross power, then start corresponding stand-by power supply;
Step 3, select the load that load centralization priority to be restored is the highest, recover from this limit priority load; Once only recover the power supply of a load, then press load priority descending order and recover load supplying;
All standby recovery paths mark of load selected by step 4, search and foundation, namely searches, until run into reference source or power supply along the restoration path pointed by each iterator of this load;
Step 5, check the component states of each restoration path mark, if there is the status attribute failure state of assembly, then this restoration path mark is invalid;
Step 6, judge respectively whether can have enough available horsepowers by restoration path, if there is multiple restoration path to meet the demands, then the restoration path mark that selector switch number of operations is minimum, as can restoration path, then forwards step 8 to;
Step 7, for the required load restored electricity, if do not have a restoration path independently for it provides enough electric energy, then according to the principle of switching manipulation least number of times, to select two or more path to power for this load simultaneously; If also there is no suitable restoration path, forward step 11 to;
Step 8, according to assembly in this restoration path mark against order, starting power converter or Closing Switch device successively, the first Operating In Persistent Current Mode of power inverter namely far away apart from load to be restored or switching device;
Step 9, after this load supplying recovers, check whether the constraints of associated component meets, if meet constraints, forwards step 11 to; Otherwise forward step 10 to;
Step 10, from affected lowest priority and minimum power load, perform load shedding, once only unload a load, until institute's Prescribed Properties meet;
Step 11, delete this load from load centralization to be restored, then forward step 3 to.
2. the reconstructing method of ship integrated power system as claimed in claim 1, it is characterized in that: the underlying attribute of assembly comprises combined properties, the constraints relevant to the stability of a system and fail safe, current operating state and condition of work, topological structure relation between assembly, in system practical work process, the underlying attribute of assembly carries out real-time update by iterator.
3. the reconstructing method of ship integrated power system as claimed in claim 2, is characterized in that: described combined properties comprises the identifier of assembly, whether component type, the priority of assembly, assembly can carry out the operation of "ON" "Off"; Described constraints comprises the maximum power of assembly, the safe voltage limit of assembly, current operating state and condition of work comprise power, the voltage of assembly, the electric current of assembly, available horsepower, the component states of assembly, and between assembly, topological structure relation comprises the forward direction mark relevant to assembly, backward mark, feeder line path mark, fraternal mark and adjacent mark assembly.
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