CN105119367A - Digital spare power automatic switching simulation method based on dynamic topology - Google Patents
Digital spare power automatic switching simulation method based on dynamic topology Download PDFInfo
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- CN105119367A CN105119367A CN201510644570.9A CN201510644570A CN105119367A CN 105119367 A CN105119367 A CN 105119367A CN 201510644570 A CN201510644570 A CN 201510644570A CN 105119367 A CN105119367 A CN 105119367A
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Abstract
The invention discloses a digital spare power automatic switching simulation method based on dynamic topology. The method comprises the following steps: setting a pre-operation definition of each switch and isolator in a transformer substation monitoring system, setting a rated capacity of a transformer, and setting a remote measurement point for marking a real-time voltage value of a bus-bar; reading all action logics on a digital spare power automatic switching apparatus, calculating a pre-operation state value of the switch and isolator associated to each action logic, and displaying the action logic of the digital spare power automatic switching apparatus; when the simulation is carried out for each action logic, obtaining a data section of the current moment from a real-time library, copying the data section into a simulation library, taking the data in the simulation library as a basis, and executing a corresponding operation according to the pre-operation state value of each switch and isolator; after the simulation execution is completed, analyzing whether the logic is reasonable or not, and recording a simulation result; and after all action logic simulation is completed, uniformly displaying the simulation result of each action logic. By adopting the method, the action logic of the digital spare power automatic switching apparatus can be relatively likely to verify.
Description
Technical field
The invention belongs to Automation of Electric Systems control field, be specifically related to a kind of digitlization prepared auto restart emulation mode based on dynamic topology in transformer station.
Background technology
Automatic throw-in equipment of emergency power supply (abbreviation prepared auto restart) extensive use in low-voltage transformer station, it can ensure the uninterrupted power supply to user when electric network fault occurs, improve the reliability of user power utilization.Traditional backup auto-activating device wiring is complicated, need by signal cable obtain service entrance switch state, obtain electric current and voltage value by ac circuit, cost is higher, and is unfavorable for maintenance.When particularly on-the-spot operational mode changes, need to change cable link, construction is complicated, and cost is high.In recent years, along with going deep into of IEC61850 scale-model investigation, electric power digital obtained fast development, had occurred digitlization prepared auto restart, and its logic is arranged flexibly, convenience.In digital transformer substation, the GOOSE signal that can be sent by measure and control device, obtains state information and the electric current and voltage value of all switch tools in whole plant stand.Digitlization backup auto-activating device relies on this GOOSE signal acquisition on off state and electric current and voltage value exactly, carries out Logic judgment in conjunction with operational mode, and sends operational order by GOOSE signal, and deciliter corresponding switch, realizes in-put of spare power supply.
The operational mode of traditional backup auto-activating device just according to scene during transformer substation construction secures its action logic, adopts the mode of artificial examination can determine that whether logic is reasonable.But the action logic of digitlization prepared auto restart can be arranged according to on-the-spot ruuning situation by operations staff, does not have hard wired, whether checking action logic rationally just difficult for very much.Backup auto-activating device generally possesses two kinds and the most basic hauls oneself willingly into logic: mother is hauled oneself willingly into and thrown mutually with circuit.But there are many inlet wires and multiple bus in most of transformer station, prepared auto restart logic is just very complicated, needs the operational mode after safety action can not cause certain main transformer excess load, can not make certain bus loss of pressure.If logic arranges unreasonable, not only do not reach expection object, but also can impact stand-by power supply network, even collapse together with fault network.
Summary of the invention
Object of the present invention, is the feature of the action logic comparison difficulty for digitlization backup auto-activating device, provides a kind of digitlization prepared auto restart emulation mode based on dynamic topology.
In order to reach above-mentioned purpose, solution of the present invention is:
Based on a digitlization prepared auto restart emulation mode for dynamic topology, comprise the steps:
(1) in monitoring system of electric substation, pre-set the pre-operation definition of each switch and disconnecting link, the rated capacity of transformer is set, for bus arranges the telemetry station of mark bus real-time voltage value;
(2) all action logics are read from digitlization backup auto-activating device;
(3) according to the pre-operation definition in step (1), switch relevant in each action logic read in calculation procedure (2) and the pre-operation state value of disconnecting link, adopt the action logic of independently showing interface digitlization backup auto-activating device;
(4) when emulation being performed to each action logic read in step (2), from the real-time database of monitoring system of electric substation, first obtain the data section of current time, and copy in simulated library, based on data in simulated library, according to each switch of acquisition in step (3) and the pre-operation state value of disconnecting link, perform corresponding operation;
(5) after each action logic emulated execution completes, according to the topological relation in simulated library between primary equipment, whether rationally analyze this logic, and write down simulation result;
(6) after all action logics have emulated, the unified simulation result showing each action logic.
In above-mentioned steps (1), the pre-operation definition of each switch and disconnecting link is provided with two remote signalling points, represents the pre-operation state value of current switch and disconnecting link by the value of these two remote signalling points.
In above-mentioned steps (2), each action logic read from digitlization backup auto-activating device includes current action logical triggering remote signalling point and relevant switch tool two parts content.
In above-mentioned steps (3), be value Y1, the Y2 of two remote signalling points that switch and disconnecting link are arranged in read step (1) from the real-time database of monitoring system of electric substation, the pre-operation state value according to following formula compute switch and disconnecting link:
Wherein, S
0represent the pre-operation state value of switch and disconnecting link, in its value, 0 expression does not perform, pre-point of 1 expression, and 2 represent conjunction in advance, and 3 represent abnormal, ensure that Y1, Y2 can not be 1 simultaneously by digitlization backup auto-activating device.
After action logic in above-mentioned digitlization backup auto-activating device changes, on automatically, send the pre-operation of action logic breaker in middle and disconnecting link to define the value of corresponding remote signalling point, and refresh the pre-operation state value of related switch and disconnecting link in counterlogic in real time at monitoring system of electric substation end.
In above-mentioned steps (3), action logic after monitoring system of electric substation provides independently showing interface to calculate, the function adjusted the pre-operation value of switch relevant in action logic and disconnecting link is also provided on the surface, and is updated in backup auto-activating device.
In above-mentioned steps (4), during to switch and disconnecting link executable operations, being switch and the disconnecting link execution point operation of 1 to pre-operation state value, is switch and the disconnecting link execution closing operation of 2 to pre-operation state value.
Above-mentioned each in simulated library to point closing operation that switch and disconnecting link carry out, all trigger based on the topological analysis in simulated library, by the incidence relation of each equipment room in topological program updates simulated library, calculate the state of each equipment, and in emulated interface real-time exhibition simulated library the value of each data and the state of primary equipment.
In above-mentioned steps (5), whether reasonably analysis logic concrete grammar is: based on simulated library, calculate the load capacity of each transformer according to following formula:
Wherein, S represents the load capacity according to the complete rear transformer of current action logic, it is total meritorious and always idle that P and Q represents according to the complete rear transformer of current action logic respectively, if the load capacity S calculating gained is greater than the rated capacity of the transformer set by step (1), then think that current logic is unreasonable; Obtain load on bus, and according to the telemetry station of the mark bus real-time voltage value arranged in step (1), obtain the magnitude of voltage on bus, if the load on bus is not 0, but on bus, magnitude of voltage is 0, then think that current logic is unreasonable.
In above-mentioned steps (6), after all action logics have emulated, provide unified each action logic of displaying showing interface whether reasonable, for irrational action logic, clearly give expression to the consequence performing this action logic and cause.
After adopting such scheme, the present invention, by reading the action logic of setting from digitlization backup auto-activating device, utilizes the primary equipment topological relation of monitoring system of electric substation, successively to reading each action logic emulated execution, to confirm the reasonability of logic.In simulation process, utilize the dynamic topology technology of primary equipment, represent primary equipment state variation situation in real time, and follow the tracks of the load condition of transformer and bus in plant stand, when discovery exists transformer excess load, or on the bus of on-load during decompression, illustrate that the logic of current execution is unreasonable, recording simulation results.After all logics are complete, the unified simulation result representing everything logic, if there is irrational logic, reminds operating personnel's adjustment, to ensure power grid security.
Adopt method of the present invention, irrational action logic in digitlization backup auto-activating device can be judged exactly, the action logic solving digitlization backup auto-activating device is difficult to the problem verified, ensure that the correctness of digitlization backup auto-activating device action logic, ensure the safe and stable operation of electrical network.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention;
Fig. 2 is that backup auto-activating device switching logic shows schematic diagram;
Fig. 3 is the simulation result unified displaying interface adopting the present invention to obtain.
Embodiment
Below with reference to accompanying drawing, technical scheme of the present invention is described in detail.
As shown in Figure 1, the invention provides a kind of digitlization prepared auto restart emulation mode based on dynamic topology, comprise the steps:
(1) configuration file of importing digital backup auto-activating device in monitoring system of electric substation, this configuration file is IEC61850 model format, and includes the pre-operation definition remote signalling point of switch and the disconnecting link involved in everything logic in configuration file.The pre-operation definition of each switch and disconnecting link is configured in monitoring system of electric substation, this definition comprises two remote signalling points, the pre-operation state value of current switch and disconnecting link is represented by the value of these two remote signalling points, according to the definition in digitlization backup auto-activating device configuration file, these two remote signalling points are set to respectively a high position and the low level of pre-operation value, its form is as follows:
{ pre-operation defines: [high-order remote signalling point, low level remote signalling point] }
And the rated capacity S of all transformers is set
n, this rated capacity is constant, can obtain from the nameplate of transformer; The voltage telemeering point of bus is set, for identifying the real-time voltage value of bus.
(2) utilize the preposition module of IEC61850, read all action logics from digitlization backup auto-activating device.Each action logic comprises two parts content: current action logical triggering remote signalling point and relevant switch tool.Its form is as follows:
Action logic 1:[(triggers remote signalling point, trigger value), switch tool 1 ..., switch tool n] }
Action logic 2:[(triggers remote signalling point, trigger value), switch tool 1 ..., switch tool n] }
…
Action logic n:[(triggers remote signalling point, trigger value), switch tool 1 ..., switch tool n] }
(3) monitoring system of electric substation possesses the basic function with the real-time communication of digitlization backup auto-activating device, and obtain the value of the pre-operation definition remote signalling point of each switch and disconnecting link setting, the pre-operation state value of compute switch and disconnecting link, computational methods are as follows:
In formula (1), S
0represent the pre-operation state value of switch and disconnecting link, value is 0,1,2,3, and wherein, 0 expression does not perform, pre-point of 1 expression, and 2 represent conjunction in advance, and 3 represent abnormal.Y1 and Y2 is respectively the value of switch tool pre-operation definition remote signalling point, and wherein Y1 is the value of low level remote signalling point, and Y2 is the value of high-order remote signalling point.Ensure that Y1, Y2 can not be 1 simultaneously by digitlization backup auto-activating device under normal circumstances.
In conjunction with the action logic read from backup auto-activating device, monitoring system of electric substation provides the action logic of independently showing interface backup auto-activating device, and exhibition method adopts list, and form as shown in Figure 2.Meanwhile, at the pre-operation strategy of each action logic breaker in middle of this displaying interface adjustable and disconnecting link, and be updated in digitlization backup auto-activating device.
Under monitoring system of electric substation and the normal situation of digitlization backup auto-activating device communication, if after the action logic on digitlization backup auto-activating device changes, can automatically on send the pre-operation of action logic breaker in middle and disconnecting link to define the value of corresponding remote signalling point, and refresh the pre-operation state value of related switch and disconnecting link in counterlogic in real time at monitoring system of electric substation end.
(4) before simulation operations being performed to each action logic, first from the real-time database of monitoring system of electric substation, copy the data section of current time, be updated in simulated library, the pre-operation state value of action logic breaker in middle and disconnecting link is calculated based on simulated library, and according to the order of action logic breaker in middle and disconnecting link, the switching of simulated action logic breaker in middle and disconnecting link, perform corresponding operation successively, wherein, being switch and the disconnecting link execution point operation of 1 to pre-operation state value, is switch and the disconnecting link execution closing operation of 2 to pre-operation state value.After point closing operation being carried out to switch and disconnecting link in simulated library at every turn, all trigger based on the topological analysis in simulated library, by the incidence relation of each equipment room in topological program updates simulated library, calculate the state of each equipment, and in emulated interface real-time exhibition simulated library the value of each data and the state of primary equipment.
In simulation process, all operation of Simulation Interface is all realize in simulated library, and simulated library and real-time database are isolated, and simulation operations does not affect the real-time monitoring and control of monitoring system of electric substation.
(5) after each action logic emulated execution completes, according to the topological relation in simulated library between primary equipment, utilize primary equipment topological analysis technique, based on simulated library, calculate the load capacity of each transformer, computing formula is as follows:
In formula (2), S represents the load capacity according to the complete rear transformer of current action logic, P and Q represents always gaining merit with always idle according to the complete rear transformer of current action logic respectively, if the load capacity S calculating gained is greater than the rated capacity S of transformer
n, then think that current logic is unreasonable; After action logic emulated execution completes, utilize primary equipment topological analysis technique, obtain load on bus, and according to the telemetry station of the mark busbar voltage arranged in step (1), obtain the magnitude of voltage on bus, if the load on bus is not 0, but on bus, magnitude of voltage is 0, then think that current logic is unreasonable.
After action logic emulation terminates, whether rationally analyze current logic, record analysis result, its form is as follows:
{ action logic number, simulation result, descriptor }
Wherein, simulation result be divided into by, not by two kinds of situations, in descriptor, clearly state the intransitable reason of this action logic, such as: TxH1 main transformer is super to be held, rated capacity: xxx, capacity after action: xxx, or: bus Bus1 load: xxx, voltage is 0.
(6), after all emulation terminates, whether copying module provides unified each action logic of displaying showing interface reasonable, and it shows interface as shown in Figure 3.
Transformers all in current transformer substation and bus is included in this displaying interface, after each action logic emulated execution, the main transformer and normal bus icon " √ " that do not surpass appearance are represented, otherwise, represent by icon "×", the transformer excised from electrical network because of simulated failure with icon " " represent.If there is the situation that main transformer surpasses appearance or bus sky extension, then think that this action logic is unreasonable, its simulation result is " Failure ", otherwise simulation result is " Success ".For irrational action logic, go out concrete analysis result by simple text description, clearly give expression to the consequence performing this action logic and cause.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (10)
1., based on a digitlization prepared auto restart emulation mode for dynamic topology, it is characterized in that comprising the steps:
(1) in monitoring system of electric substation, pre-set the pre-operation definition of each switch and disconnecting link, the rated capacity of transformer is set, for bus arranges the telemetry station of mark bus real-time voltage value;
(2) all action logics are read from digitlization backup auto-activating device;
(3) according to the pre-operation definition in step (1), switch relevant in each action logic read in calculation procedure (2) and the pre-operation state value of disconnecting link, adopt the action logic of independently showing interface digitlization backup auto-activating device;
(4) when emulation being performed to each action logic read in step (2), from the real-time database of monitoring system of electric substation, first obtain the data section of current time, and copy in simulated library, based on data in simulated library, according to each switch of acquisition in step (3) and the pre-operation state value of disconnecting link, perform corresponding operation;
(5) after each action logic emulated execution completes, according to the topological relation in simulated library between primary equipment, whether rationally analyze this logic, and write down simulation result;
(6) after all action logics have emulated, the unified simulation result showing each action logic.
2. a kind of digitlization prepared auto restart emulation mode based on dynamic topology as claimed in claim 1, it is characterized in that: in described step (1), the pre-operation definition of each switch and disconnecting link is provided with two remote signalling points, represents the pre-operation state value of current switch and disconnecting link by the value of these two remote signalling points.
3. a kind of digitlization prepared auto restart emulation mode based on dynamic topology as claimed in claim 1, it is characterized in that: in described step (2), each action logic read from digitlization backup auto-activating device includes current action logical triggering remote signalling point and relevant switch tool two parts content.
4. a kind of digitlization prepared auto restart emulation mode based on dynamic topology as claimed in claim 1, it is characterized in that: in described step (3), be value Y1, the Y2 of two remote signalling points that switch and disconnecting link are arranged in read step (1) from the real-time database of monitoring system of electric substation, the pre-operation state value according to following formula compute switch and disconnecting link:
Wherein, S
0represent the pre-operation state value of switch and disconnecting link, in its value, 0 expression does not perform, pre-point of 1 expression, and 2 represent conjunction in advance, and 3 represent abnormal, ensure that Y1, Y2 can not be 1 simultaneously by digitlization backup auto-activating device.
5. a kind of digitlization prepared auto restart emulation mode based on dynamic topology as claimed in claim 4, it is characterized in that: after the action logic in described digitlization backup auto-activating device changes, on automatically, send the pre-operation of action logic breaker in middle and disconnecting link to define the value of corresponding remote signalling point, and refresh the pre-operation state value of related switch and disconnecting link in counterlogic in real time at monitoring system of electric substation end.
6. a kind of digitlization prepared auto restart emulation mode based on dynamic topology as claimed in claim 1, it is characterized in that: in described step (3), action logic after monitoring system of electric substation provides independently showing interface to calculate, the function adjusted the pre-operation value of switch relevant in action logic and disconnecting link is also provided on the surface, and is updated in backup auto-activating device.
7. a kind of digitlization prepared auto restart emulation mode based on dynamic topology as claimed in claim 1, it is characterized in that: in described step (4), during to switch and disconnecting link executable operations, being switch and the disconnecting link execution point operation of 1 to pre-operation state value, is switch and the disconnecting link execution closing operation of 2 to pre-operation state value.
8. a kind of digitlization prepared auto restart emulation mode based on dynamic topology as claimed in claim 7, it is characterized in that: described each in simulated library to point closing operation that switch and disconnecting link carry out, all trigger based on the topological analysis in simulated library, by the incidence relation of each equipment room in topological program updates simulated library, calculate the state of each equipment, and in emulated interface real-time exhibition simulated library the value of each data and the state of primary equipment.
9. a kind of digitlization prepared auto restart emulation mode based on dynamic topology as claimed in claim 1, it is characterized in that in described step (5), whether reasonably analysis logic concrete grammar is: based on simulated library, calculate the load capacity of each transformer according to following formula:
Wherein, S represents the load capacity according to the complete rear transformer of current action logic, it is total meritorious and always idle that P and Q represents according to the complete rear transformer of current action logic respectively, if the load capacity S calculating gained is greater than the rated capacity of the transformer set by step (1), then think that current logic is unreasonable; Obtain load on bus, and according to the telemetry station of the mark bus real-time voltage value arranged in step (1), obtain the magnitude of voltage on bus, if the load on bus is not 0, but on bus, magnitude of voltage is 0, then think that current logic is unreasonable.
10. a kind of digitlization prepared auto restart emulation mode based on dynamic topology as claimed in claim 1, it is characterized in that: in described step (6), after all action logics have emulated, there is provided unified each action logic of displaying showing interface whether reasonable, for irrational action logic, clearly give expression to the consequence performing this action logic and cause.
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| CN113419415A (en) * | 2021-06-17 | 2021-09-21 | 中国电力科学研究院有限公司 | Method and system for detecting centralized redundant standby mode of intelligent substation measurement and control system |
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