CN102315643A - Three defensive lines based automatic batch fault set generation method - Google Patents
Three defensive lines based automatic batch fault set generation method Download PDFInfo
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- CN102315643A CN102315643A CN201110239133A CN201110239133A CN102315643A CN 102315643 A CN102315643 A CN 102315643A CN 201110239133 A CN201110239133 A CN 201110239133A CN 201110239133 A CN201110239133 A CN 201110239133A CN 102315643 A CN102315643 A CN 102315643A
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Abstract
The invention provides a classified fault template based on the concept of three lines of defense in a power system, which is generally adopted by power grid construction in China. On the basis, the automatic batch fault set generation is realized and the batch generation with same faults can be realized for a plurality of nodes in the same region or same voltage grade. Compared with a traditional single fault generation method for elements, the automatic batch fault set generation method can be used for saving multiple repeated operations, so that the time for fault generation is greatly saved and the work efficiency is improved. Meanwhile, various fault templates are classified according to the requirement of three lines of defense, thus weak spots and safety and danger points in the operation of the power grid can be found more comprehensively and accurately, and further, references can be provided for safe and stable operation of a large power grid.
Description
Technical field
The present invention relates to field of power, be specifically related to a kind ofly generate method automatically for the Electrical Power System Dynamic safety analysis provides the fault collection of failure mode, more specifically, is a kind of fault collection automatic batch generation method based on the three lines of defence.
Background technology
Research experiment will be brought harm to power network safety operation and personal safety on actual electric network.Testing program designs the generation that unreasonable imperfection possibly cause the electricity net safety stable accident; Manual operation is improper then possibly to cause loss of life or personal injury etc.In addition, in that the actual field research experiment is often high to site requirements, wiring is complicated, cause experimentation cost high.All factors show; Set up the all-digital real-time simulation laboratory, secondary devices such as physical unit are moved into the laboratory, adopt digital electrical network to substitute primary system; Unite and carry out physical test, have plurality of advantages such as experimentation cost is low, efficient is high, the cycle is short, favorable repeatability.The existing grid simulation computational analysis of China's electrical network means mainly adopt off-line power network analysis software, like domestic electric power system synthesizer (PSASP) commonly used, power system analysis program (BPA) etc.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; Be based on the notion of the electric power system three lines of defence of generally adopting in China's power grid construction; Propose the fault template of classification, and realized that on this basis the automatic batch of fault collection generates, the batch that can carry out similar fault to some nodes of the same area or same electric pressure generates; Compare with existing single failure generation to element; For the user has saved many repetitive operations, saved the time that fault generates greatly, improved operating efficiency.Simultaneously, all kinds of fault templates are classified according to the requirement of three lines of defence, weak spot and safety risk point in can more comprehensive and accurate discovery operation of power networks be for the safe and stable operation of big electrical network provides foundation.
The present invention proposes on the basis of electric power system synthesizer (PSASP) and exploitation.The fault collection generation module of PSASP calculates for static security analysis, has only N-1 calculating and setting and the setting of specific excision scheme, does not have the automatic function that generates of N-M excision scheme in batches; For the transient security analysis, have only partial fault collection and the setting of fault template, the fault template type does not generate the rule of fault in batches entirely and not.The fault setting and the generating mode of this single job formula must cause a large amount of repetitive operation.
According to first, second and third level security stability criterion of electrical network, for most safety analysis, the fault setting can unified Modeling, and this has just proposed the fault collection Templated demand is set.The present invention adopts the fault template based on the three lines of defence, and the automatic batch systematic function of fault collection is provided, and has improved the operating efficiency that grid simulation calculates.
According to a kind of fault collection automatic batch generation method of the present invention, comprising based on the three lines of defence:
First, second and third level security stability criterion according to electrical network; Employing is based on the fault template of three lines of defence; Adopt the setting of fault template, the search of fault coverage element and the element topology search function of classification, the automatic batch that the some nodes in the selected fault coverage is carried out similar fault generates;
Specifically may further comprise the steps:
One, electric power system three lines of defence
The safety and stability standard that big disturbance ability is born in electric power system is divided into three grades:
First order standard: keep the normal power supply of stable operation and electrical network, single failure, the fault that probability of occurrence is higher;
Second level standard: keep stable operation, but allow loss sub-load, single catastrophe failure, the fault that probability of occurrence is lower;
Third level standard: when system can not keep stable operation, must prevent system crash and reduce load loss, multiple catastrophe failure, the fault that probability of occurrence is very low as far as possible;
Based on above grade III Standard, electrical network adopts the three lines of defence to guarantee the safe and stable operation of electric power system when running into various accident:
The first line of defence: rapid and reliable relaying protection, effective preventative control measure, guarantee that electrical network keeps the normal power supply of power grid operation and electrical network when common single failure takes place;
Defence line, second road: adopt emergency control measures such as stabilization control device and cutter, cutting load, guarantee that electrical network can continue maintenance stable operation when the lower catastrophe failure of probability of happening;
Three lines of defence: step-out off-the-line, frequency and Voltage Emergency Control device are set,, prevent large-area power-cuts when electrical network runs into the very low multiple accident of probability and during stability disruption, relies on these device preventing accidents to enlarge;
Two, the fault template classification based on the three lines of defence is provided with
According to the history run parameter of application electrical network, obtain the most common failure type and the control strategy of this electrical network; According to the description of above-mentioned three lines of defence,, obtain reflecting the classification model of the fault order of severity with above-mentioned common faults classification of type;
Three, the automatic batch of fault collection generates
Fault template to above-mentioned classification defines; Comprise and set template type, Name and Description; Static security analysis is provided with component type and failure mode; Dynamic security analysis is provided with component type and the corresponding action of template, and the corresponding action of said template comprises failure mode, fault time and abort situation; The fault template provides the typical case who requires based on the three lines of defence to be provided with to the user, and according to the difference of concrete electrical network, the user can increase, revise and deletion action template; The user selects to participate in the element group or the fault coverage of calculating, selects corresponding fault template, realizes automatically that by system the fault collection generates work in batches; Specifically may further comprise the steps:
1) read failure template file obtains the application rule based on fault template and template, comprises fault coverage or element group;
2) carrying out in the fault coverage element according to the component type of template definition searches: form element ownership table, obtain the seek scope of element, the element of search specified scope and provide the element tabulation of Search Results in element ownership table;
3) carry out the topology search element according to template type: specify the target and the scope of topology search, obtain all elements, in the element tabulation, travel through element and provide Search Results by annexation;
4) set failure mode according to the failure mode or the action situation of template definition;
5) generate the fault group in batches;
6) export result of calculation by the classification of three lines of defence.
Wherein, said fault template classification setting based on the three lines of defence comprises following setting:
(1) the first line of defence fault template:
I, static security analysis
Scan cut-offfing one mode arbitrarily with N bar circuit under the basic mode of confirming:
N bar circuit cut-offs one element arbitrarily and comprises: generator, 1000kV, 500kV or 220kV transmission line, 500kV main transformer, 1000kV main transformer;
II, transient stability analysis
1,1000kV, 500kV transmission line malfunction;
A: transformer
1) the single-phase or three-phase fault of transformer high-voltage side 0s, 0.09s jumps main transformer three side switches;
2) the single-phase or three-phase fault of transformer medium voltage side 0s is jumped main transformer three side switches behind the 0.09s;
B: single transmission line
1) the single-phase transient earthing fault of transmission line 0s, 0.09s bilateral line switching breaks off, the 1.09s successful reclosing;
2) the single-phase continuous earth fault of transmission line 0s, 0.09s bilateral line switching breaks off, and 1.09s overlaps, and 1.18s overlaps;
The situation of unsuccessful tripping:
1) transmission line 0s three-phase fault, 0.09s breaks off the bilateral line switching, does not overlap;
2) transmission line 0s three-phase fault-free is broken off and not being overlapped;
2,220kV fault
Single transmission line
1) the single-phase transient earthing fault of 220kV circuit 0s, the bilateral line switching broke off in 0.12 second, the 1.12s successful reclosing;
2) the single-phase permanent fault of 220kV circuit 0s, the bilateral line switching broke off in 0.12 second, the 1.12s unsuccessful reclosing, 1.24s bilateral circuit breaks off;
3) 220kV circuit 0s three-phase fault is broken off, and 0.12s bilateral line switching breaks off, and does not overlap;
4) 220kV circuit 0s three-phase fault-free is broken off, and does not overlap;
Defence line, (three) second roads fault template
I, static security analysis:
1, the factory station loses one section 220kV and with Up Highway UHW, and the bus branch road that links to each other all breaks off;
To 1000kV, 500kV, 220kV transformer station, power plant's booster stations;
2,500kV and above transformer, 220kV and above circuit N-2;
3, two or many back transmission lines lose simultaneously with tower;
II, transient stability analysis
1,1000kV, 500kV fault
A: single transmission line
1) circuit 0s single-phase earthing/three-phase shortcircuit permanent fault, any the switch tripping of fault near-end, other switch three-phase of 0.09s faulty line both sides breaks off, and the next stage switch three-phase of 0.34s tripping switch breaks off;
B: parallel lines on same tower transmission line
1) double-circuit lines on the same pole, alternate instantaneous short-circuit fault takes place in different name two phase 0s, and 0.09s breaks off double-circuit line bilateral fault phase switch, and 1.09s overlaps double-circuit line bilateral fault phase switch;
2) double-circuit lines on the same pole; Alternate permanent short earth fault takes place in different name two phase 0s, and 0.09s breaks off double-circuit line bilateral fault phase switch, and 1.09s overlaps double-circuit line bilateral fault phase switch; Unsuccessful reclosing, the tripping simultaneously of 1.18s double loop bilateral switch three-phase;
3) three-phase fault takes place in double-circuit lines on the same pole 0s simultaneously, the tripping of 0.09 second double loop nearside switch, the switch tripping of 0.1s double loop distally;
4) three-phase fault takes place in double-circuit lines on the same pole 0s simultaneously, double line down near-end switch three-phase tripping simultaneously in 0.09 second, the tripping simultaneously of 0.68s double line down far-end switch three-phase;
5) double-circuit lines on the same pole, alternate instantaneous short-circuit fault takes place in different name two phase 0s, and 0.09s breaks off double-circuit line bilateral fault phase switch, and 1.09s overlaps double-circuit line bilateral fault phase switch;
C: mix the parallel lines on same tower transmission line
1) 500, three-phase fault takes place in 220kV double-circuit lines on the same pole simultaneously, 0.09s jumps 500kV circuit bilateral switch, jumps 220kV circuit bilateral switch in 0.12 second;
2) 500,220kV mixing double-circuit lines on the same pole different name two-phase short-circuit fault, 0.09s jumps 500kV circuit bilateral switch, jumps 220kV circuit bilateral switch in 0.12 second;
2,220kV fault
A: single transmission line
1) 220kV circuit 0s single-phase earthing or three-phase fault, the tripping of circuit near-end switch, 0.12s tripping distal line switch, 0.37s jumping circuit near-end factory station is female to be joined, and 0.62s jumps tripping switch place other circuit of bus;
B: parallel lines on same tower transmission line
Single phase ground fault takes place when 1) 220kV double-circuit lines on the same pole different name two is identical, and the bilateral line switching broke off in 0.12 second, 1.12s unsuccessful reclosing, the tripping simultaneously of 1.24s double loop three-phase;
2) three-phase fault takes place in 220kV double-circuit lines on the same pole simultaneously, and the bilateral line switching broke off in 0.12 second;
3, DC power transmission line and current conversion station fault
The A:330/220kV back-to-back converter substation
1) 330/220kV back-to-back converter substation one pole locking
2) 330/220kV back-to-back converter substation bipolar locking;
3) 330kV DC power transmission line one pole fault;
4) the bipolar fault of 330kV DC power transmission line;
The B:330/500 back-to-back converter substation
1) 330/500kV back-to-back converter substation one pole locking;
2) 330/500kV back-to-back converter substation bipolar locking;
3) 330kV DC power transmission line one pole fault;
4) the bipolar fault of 330kV DC power transmission line;
C: ± 800kV current conversion station
1) ± locking of 800kV current conversion station one pole;
2) ± 800kV current conversion station bipolar locking
3) ± 800kV DC power transmission line one pole fault;
4) ± the bipolar fault of 800kV DC power transmission line;
(3), three lines of defence fault template
I, static security analysis:
Lose with the corridor or with regional multiloop
II, transient stability analysis
1,220kV fault
Bus:
1) 220kV arbitrary section bus 0s single-phase earthing or three phase short circuit fault, all outlets on the 0.12s excision bus;
2) 220kV arbitrary section bus 0s single-phase earthing or three phase short circuit fault, this section of 0.12s excision bus, bus connection switch tripping, all switches on another section of 0.37s excision bus;
2, automatic regulating equipment is malfunctioning
The malfunctioning generator power that causes of excitation or governing system is swung significantly;
3, lose high power station
1) and netting twine all trip;
4, multiple faults;
The invention has the beneficial effects as follows:
The present invention can realize that the batch that some nodes in the selected fault coverage is carried out similar fault generates; Compare with existing single failure generation to element; For the user has saved many repetitive operations, saved the time that fault generates greatly, improved operating efficiency.Simultaneously, all kinds of fault templates are classified according to the requirement of three lines of defence, weak spot and safety risk point in can more comprehensive and accurate discovery operation of power networks be for the safe and stable operation of big electrical network provides foundation.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 is a static security analysis anticipation excision scheme sketch map.
Fig. 2 is that transient security is analyzed the forecast failure collection sketch map.
Fig. 3 is the technical architecture plan according to method of the present invention.
Fig. 4 is the fault collection sketch map of UI Preferences.
Fig. 5 generates the flow chart of fault group in batches through template.
Fig. 6-the 9th, the flow chart of each template definition.
Embodiment
On the basis of existing electric power system synthesizer (PSASP), adopt the software of developing based on the fault collection automatic batch generation method of three lines of defence following:
(1) system configuration:
1, functional structure:
Static security analysis anticipation excision scheme sketch map is as shown in Figure 1.Calculate for static security analysis, on the basis of existing N-1 calculating and setting and the setting of specific excision scheme, providing in batches, N-M excises the function that scheme generates automatically.
It is as shown in Figure 2 that transient security is analyzed the forecast failure collection sketch map.For the transient security analysis, on the basis of existing fault collection and the setting of fault template, increase the fault template type, concentrating in fault increases the rule that generates the batch fault.
2, technical pattern:
Software configuration adopts layering thought, and alternation of bed, logical layer, data processing (IO) layer, data Layer are as shown in Figure 3.
Alternation of bed: process user input data and the dateout that shows the user.
Logical layer: handle and the relevant operation of business (the fault coverage element is searched, topology search, fault template applications etc.).
Data processing (IO) layer: the read-write operation of handling file (xml configuration file, fault template file, fault collection file); The read-write operation of process database (engineering data base of PSASP7.0); The initialization of deal with data object and read-write operation.
Data Layer: the database of CONFIG.SYS object, PSASP7.0, internal storage data object data such as (data of logical layer operation).
3, with the relation of other external systems
The automatic fault collection is provided with module and for the DSA system static security analysis calculating and setting that scanning is calculated and the tabulation of excision scheme is provided, and the forecast failure collection tabulation of transient stability analysis is provided for the DSA system.
It is that the Distributed Calculation of DSA system provides fault collection file that the automatic fault collection is provided with module, through file interaction.
(2) system design
1, transient stability fault collection is provided with function
A: functional requirement:
template can be a plurality of, do not conflict mutually or relevant
supports to increase deletion and waits basic operation
The content of
fault template setting comprises:
(1) component type (transformer, circuit, element group, ac line, factory station)
(2) fault time (comprising the beginning and ending time)
(3) fault coverage: electric pressure (1000/500/330/220/110/35), zone or factory station
(4) failure mode (single-phase, three-phase, female tripping, circuit tripping, different name phase (will establish phase place) of joining)
(5) abort situation
Above-mentioned fault setting if component type is the element group, should be provided with element set of pieces quantity, all requires to be provided with the above-mentioned type information for each element.
B: flow process
The fault collection sketch map of UI Preferences is as shown in Figure 4.
Dynamically generate the fault collection of calculating needs according to user-defined fault collection.
The flow process that generates batch fault group through template is as shown in Figure 5.
During the template applications rule,, generate the fault group of particular type more in batches according to Template Information according to the element group that application rule obtains fault coverage (electric pressure, subregion and factory station etc.) or relates to.
C: other designs: module (class) design, surface chart design, job control information, monitored variable setting, INSTABILITY CRITERION setting, database design.
2, static security analysis is provided with function
A: functional requirement:
1) 1000kV, 500kV circuit 0s single-phase earthing/three-phase shortcircuit permanent fault; (3/2 wiring of any switch of fault near-end; Totally two switches) tripping, other switch of 0.09s faulty line both sides (3 switches) three-phase breaks off, and the next stage switch three-phase of 0.34s tripping switch breaks off.
2) 220kV circuit 0s single-phase earthing or three-phase fault, the tripping of circuit near-end switch, 0.12s tripping distal line switch, 0.37s jumping circuit near-end factory station is female to be joined, and 0.62s jumps tripping switch place other circuit of bus.
physics busbar fault+switch motion (containing tripping) fault template
power plant (machine) fault template
B: other designs: module (class) design, surface chart design, data file design, Interface design.
3, fault template modeling function
A: functional requirement:
3) 1000kV, 500kV circuit 0s single-phase earthing/three-phase shortcircuit permanent fault; (3/2 wiring of any switch of fault near-end; Totally two switches) tripping, other switch of 0.09s faulty line both sides (3 switches) three-phase breaks off, and the next stage switch three-phase of 0.34s tripping switch breaks off.
4) 220kV circuit 0s single-phase earthing or three-phase fault, the tripping of circuit near-end switch, 0.12s tripping distal line switch, 0.37s jumping circuit near-end factory station is female to be joined, and 0.62s jumps tripping switch place other circuit of bus.
double loop (parallel lines on same tower transmission line) fault template
220kV arbitrary section bus 0s single-phase earthing or three phase short circuit fault; 0.12s excise this section bus; The bus connection switch tripping, all switches on another section of 0.37s excision bus.
B：
The template definition flow process is as shown in Figure 6.
C: other designs: module (class) design, surface chart design, data file design, Interface design.
4, fault coverage element locating function
A: functional requirement:
B: flow process, as shown in Figure 7.
Generate the code existing code capable of using of element ownership table.
C: other designs: module (class) design, database design, Interface design.
5, topology search function
A: functional requirement:
B: flow process, as shown in Figure 8.
C: other designs: module (class) design, database design, Interface design.
6, the element group is provided with function
A: functional requirement:
B: flow process
Mutual through man-machine system, from component library, select element to generate the element group.The element group can increase, deletes, duplicate; The element group need be saved in the database.
C: other designs: module (class) design, surface chart design, database table design, Interface design.
7, submit calculating to
A: functional requirement:
selects the static security analysis operation to submit calculating to
generates calculation document, is submitted to platform and calculates
B: the template definition flow process is as shown in Figure 9.
C: other designs: module (class) design, surface chart design, Interface design.
8, user's fault collection is provided with explanation
The requirement documents of the automatic generation forecast failure collection that proposes to the user designs, and demand is analyzed one by one, guarantees that this Module Design satisfies all demands of user.
Invention has been described according to specific exemplary embodiment here.It will be conspicuous under not departing from the scope of the present invention, carrying out suitable replacement to one skilled in the art or revise.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present invention, scope of the present invention is by appended claim definition.
Claims (2)
1. fault collection automatic batch generation method based on the three lines of defence is characterized in that:
First, second and third level security stability criterion according to electrical network; Employing is based on the fault template of three lines of defence; Adopt the setting of fault template, the search of fault coverage element and the element topology search function of classification, the automatic batch that the some nodes in the selected fault coverage is carried out similar fault generates;
May further comprise the steps:
One) electric power system three lines of defence
The safety and stability standard that big disturbance ability is born in electric power system is divided into three grades:
First order standard: keep the normal power supply of stable operation and electrical network, single failure, the fault that probability of occurrence is higher;
Second level standard: keep stable operation, but allow loss sub-load, single catastrophe failure, the fault that probability of occurrence is lower;
Third level standard: when system can not keep stable operation, must prevent system crash and reduce load loss, multiple catastrophe failure, the fault that probability of occurrence is very low as far as possible;
Based on above grade III Standard, electrical network adopts the three lines of defence to guarantee the safe and stable operation of electric power system when running into various accident:
The first line of defence: rapid and reliable relaying protection, effective preventative control measure, guarantee that electrical network keeps the normal power supply of power grid operation and electrical network when common single failure takes place;
Defence line, second road: adopt emergency control measures such as stabilization control device and cutter, cutting load, guarantee that electrical network can continue maintenance stable operation when the lower catastrophe failure of probability of happening;
Three lines of defence: step-out off-the-line, frequency and Voltage Emergency Control device are set,, prevent large-area power-cuts when electrical network runs into the very low multiple accident of probability and during stability disruption, relies on these device preventing accidents to enlarge;
Two) the fault template classification based on the three lines of defence is provided with
According to the history run parameter of application electrical network, obtain the most common failure type and the control strategy of this electrical network; According to the description of above-mentioned three lines of defence,, obtain reflecting the classification model of the fault order of severity with above-mentioned common faults classification of type;
Three) automatic batch of fault collection generates
Fault template to above-mentioned classification defines; Comprise and set template type, Name and Description; Static security analysis is provided with component type and failure mode; Dynamic security analysis is provided with component type and the corresponding action of template, and the corresponding action of said template comprises failure mode, fault time and abort situation; The fault template provides the typical case who requires based on the three lines of defence to be provided with to the user, and according to the difference of concrete electrical network, the user can increase, revise and deletion action template; The user selects to participate in the element group or the fault coverage of calculating, selects corresponding fault template, realizes automatically that by system the fault collection generates work in batches; Specifically may further comprise the steps:
1) read failure template file obtains the application rule based on fault template and template, comprises fault coverage or element group;
2) carrying out in the fault coverage element according to the component type of template definition searches: form element ownership table, obtain the seek scope of element, the element of search specified scope and provide the element tabulation of Search Results in element ownership table;
3) carry out the topology search element according to template type: specify the target and the scope of topology search, obtain all elements, in the element tabulation, travel through element and provide Search Results by annexation;
4) set failure mode according to the failure mode or the action situation of template definition;
5) generate the fault group in batches;
6) export result of calculation by the classification of three lines of defence.
2. the method for claim 1 is characterized in that:
Said fault template classification setting based on the three lines of defence comprises following setting:
(1) the first line of defence fault template:
I, static security analysis
Scan cut-offfing one mode arbitrarily with N bar circuit under the basic mode of confirming:
N bar circuit cut-offs one element arbitrarily and comprises: generator, 1000kV, 500kV or 220kV transmission line, 500kV main transformer, 1000kV main transformer;
II, transient stability analysis
1,1000kV, 500kV transmission line malfunction;
A: transformer
1) the single-phase or three-phase fault of transformer high-voltage side 0s, 0.09s jumps main transformer three side switches;
2) the single-phase or three-phase fault of transformer medium voltage side 0s is jumped main transformer three side switches behind the 0.09s;
B: single transmission line
1) the single-phase transient earthing fault of transmission line 0s, 0.09s bilateral line switching breaks off, the 1.09s successful reclosing;
2) the single-phase continuous earth fault of transmission line 0s, 0.09s bilateral line switching breaks off, and 1.09s overlaps, the tripping of 1.18s unsuccessful reclosing;
3) transmission line 0s three-phase fault, 0.09s breaks off the bilateral line switching, does not overlap;
4) transmission line 0s three-phase fault-free is broken off and not being overlapped;
2,220kV fault
Single transmission line
1) the single-phase transient earthing fault of 220kV circuit 0s, the bilateral line switching broke off in 0.12 second, the 1.12s successful reclosing;
2) the single-phase permanent fault of 220kV circuit 0s, the bilateral line switching broke off in 0.12 second, the 1.12s unsuccessful reclosing, 1.24s bilateral circuit breaks off;
3) 220kV circuit 0s three-phase fault is broken off, and 0.12s bilateral line switching breaks off, and does not overlap;
4) 220kV circuit 0s three-phase fault-free is broken off, and does not overlap;
Defence line, (two) second roads fault template
I, static security analysis:
1, the factory station loses one section 220kV and with Up Highway UHW, and the bus branch road that links to each other all breaks off;
To 1000kV, 500kV, 220kV transformer station, power plant's booster stations;
2,500kV and above transformer, 220kV and above circuit N-2;
3, two or many back transmission lines lose simultaneously with tower;
II, transient stability analysis
1,1000kV, 500kV fault
A: single transmission line
1) circuit 0s single-phase earthing/three-phase shortcircuit permanent fault, any the switch tripping of fault near-end, other switch three-phase of 0.09s faulty line both sides breaks off, and the next stage switch three-phase of 0.34s tripping switch breaks off;
B: parallel lines on same tower transmission line
1) double-circuit lines on the same pole, alternate instantaneous short-circuit fault takes place in different name two phase 0s, and 0.09s breaks off double-circuit line bilateral fault phase switch, and 1.09s overlaps double-circuit line bilateral fault phase switch;
2) double-circuit lines on the same pole; Alternate permanent short earth fault takes place in different name two phase 0s, and 0.09s breaks off double-circuit line bilateral fault phase switch, and 1.09s overlaps double-circuit line bilateral fault phase switch; Unsuccessful reclosing, the tripping simultaneously of 1.18s double loop bilateral switch three-phase;
3) three-phase fault takes place in double-circuit lines on the same pole 0s simultaneously, the tripping of 0.09 second double loop nearside switch, the switch tripping of 0.1s double loop distally;
4) three-phase fault takes place in double-circuit lines on the same pole 0s simultaneously, double line down near-end switch three-phase tripping simultaneously in 0.09 second, the tripping simultaneously of 0.68s double line down far-end switch three-phase;
5) double-circuit lines on the same pole, alternate instantaneous short-circuit fault takes place in different name two phase 0s, and 0.09s breaks off double-circuit line bilateral fault phase switch, and 1.09s overlaps double-circuit line bilateral fault phase switch;
C: mix the parallel lines on same tower transmission line
1) 500, three-phase fault takes place in 220kV double-circuit lines on the same pole simultaneously, 0.09s jumps 500kV circuit bilateral switch, jumps 220kV circuit bilateral switch in 0.12 second;
2) 500,220kV mixing double-circuit lines on the same pole different name two-phase short-circuit fault, 0.09s jumps 500kV circuit bilateral switch, jumps 220kV circuit bilateral switch in 0.12 second;
2,220kV fault
A: single transmission line
1) 220kV circuit 0s single-phase earthing or three-phase fault, the tripping of circuit near-end switch, 0.12s tripping distal line switch, 0.37s jumping circuit near-end factory station is female to be joined, and 0.62s jumps tripping switch place other circuit of bus;
B: parallel lines on same tower transmission line
Single phase ground fault takes place when 1) 220kV double-circuit lines on the same pole different name two is identical, and the bilateral line switching broke off in 0.12 second, 1.12s unsuccessful reclosing, the tripping simultaneously of 1.24s double loop three-phase;
2) three-phase fault takes place in 220kV double-circuit lines on the same pole simultaneously, and the bilateral line switching broke off in 0.12 second;
3, DC power transmission line and current conversion station fault
The A:330/220kV back-to-back converter substation
1) 330/220kV back-to-back converter substation one pole locking
2) 330/220kV back-to-back converter substation bipolar locking;
3) 330kV DC power transmission line one pole fault;
4) the bipolar fault of 330kV DC power transmission line;
The B:330/500 back-to-back converter substation
1) 330/500kV back-to-back converter substation one pole locking;
2) 330/500kV back-to-back converter substation bipolar locking;
3) 330kV DC power transmission line one pole fault;
4) the bipolar fault of 330kV DC power transmission line;
C: ± 800kV current conversion station
1) ± locking of 800kV current conversion station one pole;
2) ± 800kV current conversion station bipolar locking
3) ± 800kV DC power transmission line one pole fault;
4) ± the bipolar fault of 800kV DC power transmission line;
(3), three lines of defence fault template
I, static security analysis:
Lose with the corridor or with regional multiloop
II, transient stability analysis
1,220kV fault
Bus:
1) 220kV arbitrary section bus 0s single-phase earthing or three phase short circuit fault, all outlets on the 0.12s excision bus;
2) 220kV arbitrary section bus 0s single-phase earthing or three phase short circuit fault, this section of 0.12s excision bus, bus connection switch tripping, all switches on another section of 0.37s excision bus;
2, automatic regulating equipment is malfunctioning
The malfunctioning generator power that causes of excitation or governing system is swung significantly;
3, lose high power station
1) and netting twine all trip;
4, multiple faults.
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| CN104953593A (en) * | 2015-06-01 | 2015-09-30 | 国电南瑞科技股份有限公司 | Method for quickly cutting off loads locked by ultra-high-voltage direct current in batches in concurrence manner |
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