CN110133436A - Power distribution network busbar voltage abnormality judgment method based on D5000 system - Google Patents
Power distribution network busbar voltage abnormality judgment method based on D5000 system Download PDFInfo
- Publication number
- CN110133436A CN110133436A CN201910378099.1A CN201910378099A CN110133436A CN 110133436 A CN110133436 A CN 110133436A CN 201910378099 A CN201910378099 A CN 201910378099A CN 110133436 A CN110133436 A CN 110133436A
- Authority
- CN
- China
- Prior art keywords
- phase
- voltage
- phase voltage
- fusing
- distribution network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The invention discloses the power distribution network busbar voltage abnormality judgment methods based on D5000 system, real time information function based on smart grid Dispatching Control System (i.e. D5000 system), deepen the application of D5000 system, utilize power distribution network busbar voltage real-time telemetry data, benefit shows a C language program code on the basis of D5000 system platform, prejudge specific fault type, the decision-making function that power distribution network busbar voltage judges extremely is provided for dispatcher, shorten the time that dispatcher judges and handles extremely for power distribution network busbar voltage, improve the accuracy rate of power distribution network busbar voltage judgement, reduce the labor intensity of regulation person.
Description
Technical field
The present invention relates to dispatching of power netwoks power distribution network busbar voltage abnormal failure process fields, and in particular to one kind is based on
The power distribution network busbar voltage abnormality judgment method of D5000 system.
Background technique
Power distribution network busbar voltage abnormal failure may be caused there are many reason, such as: single line single-phase earthing, a plurality of route
It fuses (the small switch trip of low pressure) with mutually ground connection, circuit breaking, route high-voltage wire iron-melting fusing, route low-tension fuse, is resonance, compound
Failure etc..It is currently that specific fault type is judged by dispatcher's manual analysis, carries out troubleshooting.
Smart grid Dispatching Control System abbreviation D5000 system is the smart grid supporting system technology of a new generation
Basic platform, realize " remotely have access to, alert direct transfer, lateral direction penetrating, vertical management " function.
Summary of the invention
The object of the present invention is to provide a kind of power distribution network busbar voltage abnormality judgment method based on D5000 system, to each
Characteristic quantity difference between kind fault type is screened, and the tool of power distribution network busbar voltage abnormal failure is judged by machine language
Body type handles power distribution network busbar voltage for dispatcher and provides aid decision opinion extremely.
Design principle of the invention is: the power grid based on smart grid Dispatching Control System (i.e. D5000 system) is believed in real time
Function is ceased, deepens the application of D5000 system, utilizes power distribution network busbar voltage (Ua, Ub, Uc, Uab, Ubc, Uca) real-time telemetry number
According to writing program code in system platform, prejudge specific failure cause, provide power distribution network busbar voltage for dispatcher and sentence extremely
Disconnected scheduling aid decision opinion.
The technical solution of the invention is as follows: the power distribution network busbar voltage abnormality judgment method based on D5000 system includes
Following steps:
Step 1: power distribution network bus phase voltage, line voltage real-time telemetry data are extracted by the D5000 system；
Step 2: power distribution network bus phase voltage, line voltage real time data are calculated and is prejudged by D5000 system；
Step 3: output calculates and anticipation result；
Step 4: dispatcher carries out manual confirmation to calculating and prejudging result, and starts respective handling process；
Step 5: step 1 to step 4 is repeated in real time.
Further, it is to be inferred to specific failure cause by extracting characteristic that anticipation is carried out in abovementioned steps two,
, according to power distribution network busbar voltage difference when being different abnormal phenomenon, it is specifically divided into following 13 kinds of situations for it:
S1: normal operating voltage: according to the normal power distribution network bus line voltage 10-10.7kV (20- of electric power system dispatching regulation
21.4kV), phase voltage range 5.77-6.17kV (11.55-12.36kV)；
S2: single phase metal ground connection: Earth Phase voltage is reduced to 0, and it is line voltage that remaining two-phase phase voltage, which increases, and line voltage is constant；
S3: single-phase transition resistance is grounded (partial earth): Earth Phase voltage reduces but is not 0, and another two-phase voltage increases, and is higher than
Phase voltage is lower than line voltage, and line voltage is constant；
S4: the fusing of one phase of buckling high voltage fuse: fusing phase voltage is reduced a lot but is not zero, remaining two-phase voltage is constant, and molten
Disconnected mutually relevant line voltage reduces；
S5: buckling high voltage fuse two-phase fusing: fusing phase voltage is reduced a lot but is not zero, and another phase voltage is constant, two fusing
Phases line voltage is zero, and perfecting phases line voltage is phase voltage；
S6: the fusing of one phase of buckling low-tension fuse: fusing phase voltage is reduced to zero, and another two-phase voltage is constant, with fusing phase relation line
Voltage reduces；
S7: the fusing of buckling low-tension fuse two-phase: fusing phase voltage is reduced to zero, and another phase voltage is constant, and phase voltage is reduced to zero
Two-phase be fusing phase；
S8: route single-phase wire break: a phase voltage is slightly elevated but is no more than 1.5 times of phase voltages, and in addition two-phase voltage slightly reduces,
Not less than 0.866 times phase voltage, voltage increase mutually as broken string phase；
S9: route two-phase broken string: a phase voltage reduce but be greater than zero, two-phase voltage increase and it is equal, be no more than line voltage, voltage
Raised two-phase is broken string phase；
S10: fundamental resonance: a phase voltage reduces, and it is more than line voltage, the phase voltage no more than 3.2 times, line electricity that two-phase voltage, which increases,
It presses constant；
S11: Subharmonic Resonance: three-phase voltage increases, and is typically raised to 1.2-1.5 times of phase voltage, is usually no more than 2.5 times of mutually electricity
Pressure, line voltage are constant；
S12: high-frequency resonant: three-phase voltage raises simultaneously, and overvoltage is larger, and phase voltage increases 3 times or more, and line voltage is constant；
S13: other: while being unsatisfactory for being judged as it under conditions of S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12
It, other situations consider that combined failure, telemetry are abnormal, power-to-ground capacitance is asymmetric, coupling transmitting residual voltage, thunder and lightning
Situations such as induced overvoltage.
Further, output described in step 3 calculates and the content of anticipation result includes according to the calculating and anticipation knot
Fruit outputting alarm signal, mode include alert mode, report mode, figure displaying.
Have the beneficial effect that shorten dispatcher different for power distribution network busbar voltage caused by technical solution of the present invention
The time for often judging and handling, the accuracy rate that dispatcher judges power distribution network busbar voltage is improved, reduces regulation person's
Labor intensity.
Detailed description of the invention
Fig. 1 is the control flow chart of S1 situation in judgment method of the present invention；
Fig. 2 is the control flow chart of S2 situation in judgment method of the present invention；
Fig. 3 is the control flow chart of S3 situation in judgment method of the present invention；
Fig. 4 is the control flow chart of S4 situation in judgment method of the present invention；
Fig. 5 is the control flow chart of S5 situation in judgment method of the present invention；
Fig. 6 is the control flow chart of S6 situation in judgment method of the present invention；
Fig. 7 is the control flow chart of S7 situation in judgment method of the present invention；
Fig. 8 is the control flow chart of S8 situation in judgment method of the present invention；
Fig. 9 is the control flow chart of S9 situation in judgment method of the present invention；
Figure 10 is S10 situation control flow chart in judgment method of the present invention；
Figure 11 is S11 situation control flow chart in judgment method of the present invention；
Figure 12 is S12 situation control flow chart in judgment method of the present invention；
Figure 13 is S13 situation control flow chart in judgment method of the present invention；
Figure 14 is the present invention in Hongze region north of the city change practical application exhibiting pictures.
Specific embodiment
Technical solution of the invention is further illustrated with reference to the accompanying drawings and examples, but is not to be construed as to skill
The limitation of art scheme.
Embodiment: 10kVI sections of busbar voltages of Hongze regional power grid substation judge extremely
Step 1: calculating in point table in D5000 database and define 13 kinds of abnormal conditions, and defines result 1 as output this definition
The case where, 0 is the case where not exporting this definition；
Specific 13 kinds of situations are as follows:
S1: normal operating voltage: according to the normal power distribution network bus line voltage 10-10.7kV (20- of electric power system dispatching regulation
21.4kV), phase voltage range 5.77-6.17kV (11.55-12.36kV)；Parameter setting is set according to dispatching rule in the present embodiment
It is fixed；
S2: single phase metal ground connection: Earth Phase voltage is reduced to 0, and it is line voltage that remaining two-phase phase voltage, which increases, and line voltage is constant；
Consider the influence factors such as drift, ground connection phase voltage be arranged 0 to 1kV in the present embodiment, it is contemplated that practical operation situation by its
Remaining two-phase phase voltage is arranged 8.5 to 10.7kV；
S3: single-phase transition resistance is grounded (partial earth): Earth Phase voltage reduces but is not 0, and another two-phase voltage increases, and is higher than
Phase voltage is lower than line voltage, and line voltage is constant；Ground connection phase voltage is arranged 1 to 5kV in the present embodiment, it is contemplated that actual motion
Remaining two-phase phase voltage is arranged 6.17 to 8.5kV situation；
S4: the fusing of one phase of buckling high voltage fuse: fusing phase voltage is reduced a lot but is not zero, remaining two-phase voltage is constant, and molten
Disconnected mutually relevant line voltage reduces；Fusing phase voltage is arranged 0 to 1kV in the present embodiment, it is contemplated that practical operation situation will
Line voltage mutually relevant to fusing is arranged 6.17 to 9kV；
S5: buckling high voltage fuse two-phase fusing: fusing phase voltage is reduced a lot but is not zero, and another phase voltage is constant, two fusing
Phases line voltage is zero, and perfecting phases line voltage is phase voltage；Fusing phase voltage setting is fused 0 to 2kV, two in embodiment
Phases line voltage is arranged 0 to 0.1kV；
S6: the fusing of one phase of buckling low-tension fuse: fusing phase voltage is reduced to zero, and another two-phase voltage is constant, with fusing phase relation line
Voltage reduces；In embodiment will fusing phase voltage setting 0 to 0.1kV, line voltage mutually related to fusing be arranged 6.6 to
9.5kV；
S7: the fusing of buckling low-tension fuse two-phase: fusing phase voltage is reduced to zero, and another phase voltage is constant, and phase voltage is reduced to zero
Two-phase be fusing phase；Fusing phase voltage is arranged 0 to 0.1kV in embodiment;
S8: route single-phase wire break: a phase voltage is slightly elevated but is no more than 1.5 times of phase voltages, and in addition two-phase voltage slightly reduces,
Not less than 0.866 times phase voltage, voltage increase mutually as broken string phase；Broken string phase voltage is arranged 6.6 to 9.9kV in embodiment;
Non- broken string phase voltage is arranged 4.9 to 5.6kV;
S9: route two-phase broken string: a phase voltage reduce but be greater than zero, two-phase voltage increase and it is equal, be no more than line voltage, voltage
Raised two-phase is broken string phase；Broken string phase voltage is arranged 6.6 to 9.5kV in embodiment;The setting of non-broken string phase voltage 0 to
4.9kV;
S10: fundamental resonance: a phase voltage reduces, and it is more than line voltage, the phase voltage no more than 3.2 times, line electricity that two-phase voltage, which increases,
It presses constant；Embodiment voltage reduces phase phase voltage and is arranged 0 to 5.6kV;Voltage increase phase phase voltage setting 10.7 to
21.1kV;
S11: Subharmonic Resonance: three-phase voltage increases, and is typically raised to 1.2-1.5 times of phase voltage, is usually no more than 2.5 times of mutually electricity
Pressure, line voltage are constant；Embodiment phase voltage is arranged 6.8 to 14kV；
S12: high-frequency resonant: three-phase voltage raises simultaneously, and overvoltage is larger, and phase voltage is set as 3 times or more, and line voltage is constant；
The setting of embodiment phase voltage is greater than 14kV；
S13: other: while being unsatisfactory for being judged as it under conditions of S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12
It, other situations consider that combined failure, telemetry are abnormal, power-to-ground capacitance is asymmetric, coupling transmitting residual voltage, thunder and lightning
Situations such as induced overvoltage；
Step 2: being based on D5000 system equations defined function, and benefit shows a C language the program statement under 13 kinds of abnormal conditions；
Definition: 1:10kVI sections of bus line voltage Uab of operand
2:10kVI sections of bus line voltage Ubc of operand
3:10kVI sections of bus line voltage Uca of operand
4:10kVI sections of bus A phase voltage amplitudes of operand
5:10kVI sections of bus B phase voltage amplitudes of operand
6:10kVI sections of bus C phase voltage amplitudes of operand
Operand 7: correspond to S1 situation, normal operating voltage judgement
Operand 8: correspond to S2 situation, single phase metal ground connection, and be judged as that A phase is grounded
Operand 9: correspond to S2 situation, single phase metal ground connection, and be judged as that B phase is grounded
Operand 10: correspond to S2 situation, single phase metal ground connection, and be judged as that C phase is grounded
Operand 11: correspond to S3 situation, single-phase transition resistance ground connection, and be judged as that A phase is grounded
Operand 12: correspond to S3 situation, single-phase transition resistance ground connection, and be judged as that B phase is grounded
Operand 13: correspond to S3 situation, single-phase transition resistance ground connection, and be judged as that C phase is grounded
Operand 14: correspond to S4 situation, the fusing of one phase of buckling high voltage fuse, and be judged as that A phase fuses
Operand 15: correspond to S4 situation, the fusing of one phase of buckling high voltage fuse, and be judged as that B phase is grounded
Operand 16: correspond to S4 situation, the fusing of one phase of buckling high voltage fuse, and be judged as that C phase is grounded
Operand 17: correspond to S5 situation, the fusing of buckling high voltage fuse two-phase, and be judged as that AB two-phase fuses
Operand 18: correspond to S5 situation, the fusing of buckling high voltage fuse two-phase, and be judged as that BC two-phase fuses
Operand 19: correspond to S5 situation, the fusing of buckling high voltage fuse two-phase, and be judged as that CA phase fuses
Operand 20: correspond to S6 situation, the fusing of one phase of buckling low-tension fuse, and be judged as that A phase fuses
Operand 21: correspond to S6 situation, the fusing of one phase of buckling low-tension fuse, and be judged as that B phase fuses
Operand 22: correspond to S6 situation, the fusing of one phase of buckling low-tension fuse, and be judged as that C phase fuses
Operand 23: correspond to S7 situation, the fusing of buckling low-tension fuse two-phase, and be judged as that AB phase fuses
Operand 24: correspond to S7 situation, the fusing of buckling low-tension fuse two-phase, and be judged as that BC phase fuses
Operand 25: correspond to S7 situation, the fusing of buckling low-tension fuse two-phase, and be judged as that CA phase fuses
Operand 26: correspond to S8 situation, route single-phase wire break, and be judged as that A phase breaks
Operand 27: correspond to S8 situation, route single-phase wire break, and be judged as that B phase breaks
Operand 28: correspond to S8 situation, route single-phase wire break, and be judged as that C phase breaks
Operand 29: correspond to S9 situation, route two-phase broken string, and be judged as that AB phase breaks
Operand 30: correspond to S9 situation, route two-phase broken string, and be judged as that BC phase breaks
Operand 31: correspond to S9 situation, route two-phase broken string, and be judged as that CA phase breaks
Operand 32: correspond to S10 situation, fundamental resonance judgement
Operand 33: correspond to S11 situation, Subharmonic Resonance judgement
Operand 34: correspond to S12 situation, high-frequency resonant judgement
Operand 35: correspond to S13 situation, other situation judgements
In the definition of D5000 system equations, specific C programmer sentence is as follows:
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(5.6<@
4)&&(@4<6.6)&&(5.6<@5)&&(@5<6.6)&&(5.6<@6)&&(@6<6.6)){@7=1；}else{@7=0；}// S1
(normal operating voltage)
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(0<@4)
(@4<1)&&(8.5<@5)&&(@5<10.7)&&(8.5<@6)&&(@6<10.7)){@8=1；}else{@8=0；} // S2 (A phase
Metallic earthing)
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(8.5<@
4)&&(@4<10.7)&&(0<@5)&&(@5<1)&&(8.5<@6)&&(@6<10.7)){@9=1；}else{@9=0；}// S2(B
Phase metallic earthing)
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(8.5<@
4)&&(@4<10.7)&&(8.5<@5)&&(@5<10.7)&&(0<@6)&&(@6<1)){@10=1；}else{@10=0；}// S2
(C phase metallic earthing)
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(1<@
4)&&(@4<5)&&(6.17<@5)&&(@5<8.5)&&(6.17<@6)&&(@6<8.5)){@11=1；}else{@11=0；}//
S3 (A phase transition resistance ground connection)
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(6.17<@
4)&&(@4<8.5)&&(1<@5)&&(@5<5)&&(6.17<@6)&&(@6<8.5)){@12=1；}else{@12=0；}// S3(B
Phase transition resistance ground connection)
if((0<@1)&&(@1<0.1)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(6.17<@
4)&&(@4<8.5)&&(6.17<@5)&&(@5<8.5)&&(1<@6)&&(@6<5)){@13=1；}else{@13=0；}// S3(C
Phase transition resistance ground connection)
if((6.17<@1)&&(@1<9)&&(9.5<@2)&&(@2<10.7)&&(6.17<@3)&&(@3<9)&&(0<@4)&&(@4
<1)&&(5.6<@5)&&(@5<6.6)&&(5.6<@6)&&(@6<6.6)){@14=1；}else{@14=0；} // S4 (buckling A phase
High-voltage wire iron-melting fusing)
if((6.17<@1)&&(@1<9)&&(6.17<@2)&&(@2<9)&&(9.5<@3)&&(@3<10.7)&&(5.6<@4)&&
(@4<6.6)&&(0<@5)&&(@5<1)&&(5.6<@6)&&(@6<6.6)){@15=1；}else{@15=0；} // S4 (buckling B
Phase high-voltage wire iron-melting fusing)
if((9.5<@1)&&(@1<10.7)&&(6.17<@2)&&(@2<9)&&(6.17<@3)&&(@3<9)&&(5.6<@4)&&
(@4<6.6)&&(5.6<@5)&&(@5<6.6)&&(0<@6)&&(@6<1)){@16=1；}else{@16=0；} // S4 (buckling C
Phase high-voltage wire iron-melting fusing)
if((0<@1)&&(@1<0.1)&&(5.6<@2)&&(@2<6.6)&&(5.6<@3)&&(@3<6.6)&&(0<@4)&&(@4<
2)&&(0<@5)&&(@5<2)&&(5.6<@6)&&(@6<6.6)){@17=1；}else{@17=0；} // S5 (buckling AB phase high pressure
Fuse failure)
if((5.6<@1)&&(@1<6.6)&&(0<@2)&&(@2<0.1)&&(5.6<@3)&&(@3<6.6)&&(5.6<@4)&&(@
4<6.6)&&(0<@5)&&(@5<2)&&(0<@6)&&(@6<2)){@18=1；}else{@18=0；} // S5 (buckling BC phase high pressure
Fuse failure)
if((5.6<@1)&&(@1<6.6)&&(5.6<@2)&&(@2<6.6)&&(0<@3)&&(@3<0.1)&&(0<@4)&&(@4<
2)&&(5.6<@5)&&(@5<6.6)&&(0<@6)&&(@6<2)){@19=1；}else{@19=0；} // S5 (buckling CA phase high pressure
Fuse failure)
if((6.5<@1)&&(@1<9.5)&&(9.5<@2)&&(@2<10.7)&&(6.5<@3)&&(@3<9.5)&&(0<@4)&&
(@4<0.1)&&(5.6<@5)&&(@5<6.6)&&(5.6<@6)&&(@6<6.6)){@20=1；}else{@20=0；} // S6 (pressure
Become the fusing of A phase low-tension fuse)
if((6.5<@1)&&(@1<9.5)&&(6.5<@2)&&(@2<9.5)&&(9.5<@3)&&(@3<10.7)&&(5.6<@
4)&&(@4<6.6)&&(0<@5)&&(@5<0.1)&&(5.6<@6)&&(@6<6.6)){@21=1；}else{@21=0；}// S6
(fusing of buckling B phase low-tension fuse)
if((9.5<@1)&&(@1<10.7)&&(6.5<@2)&&(@2<9.5)&&(6.5<@3)&&(@3<9.5)&&(5.6<@
4)&&(@4<6.6)&&(5.6<@5)&&(@5<6.6)&&(0<@6)&&(@6<0.1)){@22=1；}else{@22=0；}// S6
(fusing of buckling C phase low-tension fuse)
if((0<@4)&&(@4<0.1)&&(0<@5)&&(@5<0.1)&&(5.6<@6)&&(@6<6.6)){@23=1；}else{@
23=0；} // S7 (fusing of buckling AB phase low-tension fuse)
if((5.6<@4)&&(@4<6.6)&&(0<@5)&&(@5<0.1)&&(0<@6)&&(@6<0.1)){@24=1；}else{@
24=0；} // S7 (fusing of buckling BC phase low-tension fuse)
if((0<@4)&&(@4<0.1)&&(5.6<@5)&&(@5<6.6)&&(0<@6)&&(@6<0.1)){@25=1；}else{@
25=0；} // S7 (fusing of buckling CA phase low-tension fuse)
if((6.6<@4)&&(@4<9)&&(4.9<@5)&&(@5<5.6)&&(4.9<@6)&&(@6<5.6)){@26=1；}else
{@26=0；} // S8 (route A phase breaks)
if((4.9<@4)&&(@4<5.6)&&(6.6<@5)&&(@5<9)&&(4.9<@6)&&(@6<5.6)){@27=1；}else
{@27=0；} // S8 (route B phase breaks)
if((4.9<@4)&&(@4<5.6)&&(4.9<@5)&&(@5<5.6)&&(6.6<@6)&&(@6<9)){@28=1；}else
{@28=0；} // S8 (route C phase breaks)
if((6.6<@4)&&(@4<9.5)&&(6.6<@5)&&(@5<9.5)&&(@4=@5)&&(0<@6)&&(@6<4.9)){@29
=1；}else{@29=0；} // S9 (route AB phase breaks)
if((0<@4)&&(@4<4.9)&&(6.6<@5)&&(@5<9.5) &&(6.6<@6)&&(@6<9.5)&&(@5=@6)){@
30=1；}else{@30=0；} // S9 (route BC phase breaks)
if((6.6<@4)&&(@4<9.5)&&(0<@5)&&(@5<4.9)&&(6.6<@6)&&(@6<9.5)&&(@4=@6)){@31
=1；Else {@31=0 } // S9 (route CA phase breaks)
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(0<@
4)&&(@4<5.6)&&(10.7<@5)&&(@5<21.1)&&(10.7<@6)&&(@6<21.1)){@32=1；}else{@32=
0；} // S10 (fundamental resonance)
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(10.7<@
4)&&(@4<21.1)&&(0<@5)&&(@5<5.6)&&(10.7<@6)&&(@6<21.1)){@32=1；}else{@32=0；}//
S10 (fundamental resonance)
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(10.7<@
4)&&(@4<21.1)&&(10.7<@5)&&(@5<21.1)&&(0<@6)&&(@6<5.6)){@32=1；}else{@32=0；}//
S10 (fundamental resonance)
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(6.8<@
4)&&(@4<14)&&(6.8<@5)&&(@5<14)&&(6.8<@6)&&(@6<14)){@33=1；}else{@33=0；}// S11
(Subharmonic Resonance)
if((9.5<@1)&&(@1<10.7)&&(9.5<@2)&&(@2<10.7)&&(9.5<@3)&&(@3<10.7)&&(14<@
4)&&(14<@5)&&(14<@6)){@34=1；}else{@34=0；} // S12 (high-frequency resonant)
if(@1=@2=@3=@4=@5=@6=@7=@8=@9=@10=@11=@12=@13=@14=@15=@16=@17=@18=@19=@20
=@21=@22=@23=@24=@25=@26=@27=@28=@29=@30=@31=@32=@33=@34=0)){@35=1；}else{@35=
0；} // S13 (other)
Step 3: creating figure in D5000 system, and other telemetering amounts in D5000 database is called to define definition 13 in table
The judging result of kind abnormal conditions；
Step 4: showing correlated results, and is associated with related warning information.
By practice operation, for judging that power distribution network busbar voltage abnormal failure accuracy rate up to 100%, avoids regulation person
The erroneous judgement situation that artificial judgment is likely to occur, while reducing the labor intensity of regulation person.In power distribution network busbar voltage failure
When generation, it is out of order concrete type using machine language instant judgement, starts process flow in a short time, reduce original people
The time that work analyzes and determines.
Claims (3)
1. the power distribution network busbar voltage abnormality judgment method based on D5000 system, it is characterized in that it the following steps are included:
Step 1: bus phase voltage, line voltage real-time telemetry data are extracted by the D5000 system；
Step 2: bus phase voltage, line voltage real time data are calculated and is prejudged by D5000 system；
Step 3: output calculates and anticipation result；
Step 4: dispatcher carries out manual confirmation to calculating and prejudging result, and starts respective handling process；
Step 5: step 1 to step 4 is repeated in real time.
2. the power distribution network busbar voltage abnormality judgment method according to claim 1 based on D5000 system, it is characterized in that:
It is that specific failure cause is inferred to by characteristic that anticipation is carried out in abovementioned steps two, and basis is different power distribution network buses
Electric voltage exception phenomenon, it specifically has following 13 kinds of situations:
S1: normal operating voltage: according to the normal power distribution network bus line voltage 10-10.7kV (20- of electric power system dispatching regulation
21.4kV), phase voltage range 5.77-6.17kV (11.55-12.36kV)；
S2: single phase metal ground connection: Earth Phase voltage is reduced to 0, and it is line voltage that remaining two-phase phase voltage, which increases, and line voltage is constant；
S3: single-phase transition resistance is grounded (partial earth): Earth Phase voltage reduces but is not 0, and another two-phase voltage increases, and is higher than
Phase voltage is lower than line voltage, and line voltage is constant；
S4: the fusing of one phase of buckling high voltage fuse: fusing phase voltage is reduced a lot but is not zero, remaining two-phase voltage is constant, and molten
Disconnected mutually relevant line voltage reduces；
S5: buckling high voltage fuse two-phase fusing: fusing phase voltage is reduced a lot but is not zero, and another phase voltage is constant, two fusing
Phases line voltage is zero, and perfecting phases line voltage is phase voltage；
S6: the fusing of one phase of buckling low-tension fuse: fusing phase voltage is reduced to zero, and another two-phase voltage is constant, with fusing phase relation line
Voltage reduces；
S7: the fusing of buckling low-tension fuse two-phase: fusing phase voltage is reduced to zero, and another phase voltage is constant, and phase voltage is reduced to zero
Two-phase be fusing phase；
S8: route single-phase wire break: a phase voltage is slightly elevated but is no more than 1.5 times of phase voltages, and in addition two-phase voltage slightly reduces,
Not less than 0.866 times phase voltage, voltage increase mutually as broken string phase；
S9: route two-phase broken string: a phase voltage reduce but be greater than zero, two-phase voltage increase and it is equal, be no more than line voltage, voltage
Raised two-phase is broken string phase；
S10: fundamental resonance: a phase voltage reduces, and it is more than line voltage, the phase voltage no more than 3.2 times, line electricity that two-phase voltage, which increases,
It presses constant；
S11: Subharmonic Resonance: three-phase voltage increases, and is typically raised to 1.2-1.5 times of phase voltage, is usually no more than 2.5 times of mutually electricity
Pressure, line voltage are constant；
S12: high-frequency resonant: three-phase voltage raises simultaneously, and overvoltage is larger, and phase voltage increases 3 times or more, and line voltage is constant；
S13: other: while being unsatisfactory for being judged as it under conditions of S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12
It, other situations consider that combined failure, telemetry are abnormal, power-to-ground capacitance is asymmetric, coupling transmitting residual voltage, thunder and lightning
Situations such as induced overvoltage.
3. the power distribution network busbar voltage abnormality judgment method according to claim 1 based on D5000 system, it is characterized in that:
Output described in step 3 calculates and the content of anticipation result includes being exported according to the calculating and anticipation result as a result, mode packet
Alert mode, report mode, figure is included to show.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910378099.1A CN110133436A (en) | 2019-05-08 | 2019-05-08 | Power distribution network busbar voltage abnormality judgment method based on D5000 system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910378099.1A CN110133436A (en) | 2019-05-08 | 2019-05-08 | Power distribution network busbar voltage abnormality judgment method based on D5000 system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110133436A true CN110133436A (en) | 2019-08-16 |
Family
ID=67576471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910378099.1A Pending CN110133436A (en) | 2019-05-08 | 2019-05-08 | Power distribution network busbar voltage abnormality judgment method based on D5000 system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110133436A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543384A (en) * | 2013-10-15 | 2014-01-29 | 国家电网公司 | Method for determining bus ground faults |
| CN106786528A (en) * | 2016-12-22 | 2017-05-31 | 国网河北省电力公司衡水供电分公司 | It is a kind of based on the Economical Operation of Main Transformer in Substation control method of D5000 systems and application |
| CN108318779A (en) * | 2017-12-26 | 2018-07-24 | 国网河北省电力有限公司景县供电分公司 | Line fault monitoring method, device, computer readable storage medium and equipment |
-
2019
- 2019-05-08 CN CN201910378099.1A patent/CN110133436A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543384A (en) * | 2013-10-15 | 2014-01-29 | 国家电网公司 | Method for determining bus ground faults |
| CN106786528A (en) * | 2016-12-22 | 2017-05-31 | 国网河北省电力公司衡水供电分公司 | It is a kind of based on the Economical Operation of Main Transformer in Substation control method of D5000 systems and application |
| CN108318779A (en) * | 2017-12-26 | 2018-07-24 | 国网河北省电力有限公司景县供电分公司 | Line fault monitoring method, device, computer readable storage medium and equipment |
Non-Patent Citations (2)
| Title |
|---|
| 任亚涛: "10kV母线电压异常原因分析", 《农村电工》 * |
| 陈杰 等: "电压互感器铁磁谐振解决方案", 《农村电工》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107884707B (en) | High-voltage circuit-breaker switching on-off time on-Line Monitor Device and method | |
| CN102967780B (en) | Modeling method for substation intelligent alarm | |
| CN101563744B (en) | Apparatus and method for compressing exciting inrush current of transformer | |
| CN105974267B (en) | A kind of small current grounding fault positioning system and its method based on IEC 61850 | |
| CN108376966B (en) | Method and system for analyzing correlation relationship between misoperation-preventive locking logic intervals of intelligent substation | |
| CN104111403A (en) | Microcomputer integrated protection line-selection method for low-current earthed power system | |
| CN103412217A (en) | Box-type substation intelligent online failure diagnosis system | |
| CN107102259A (en) | A kind of State-Inspect of High-Voltage Circuit method and system of Multi-information acquisition | |
| CN104614638A (en) | Grounding line selection method for small current system | |
| CN103529708A (en) | Pre-operation simulation system for power distribution network and simulation analysis method | |
| Bhatt et al. | Controlled switching technique for minimization of switching surge during energization of uncompensated and shunt compensated transmission lines for circuit breakers having pre-insertion resistors | |
| CN110492477A (en) | A kind of loop network control device and control method | |
| CN105932658B (en) | A kind of method that power distribution network extinguishing arc is carried out using power distribution network arc-extinction device | |
| CN109031044B (en) | Small-current single-phase grounding automatic line selection method for dispatching-end transformer substation | |
| CN109870629A (en) | A kind of fault simulation system and method based on neutral grounding mode | |
| CN110133436A (en) | Power distribution network busbar voltage abnormality judgment method based on D5000 system | |
| CN108241105A (en) | A kind of test method of the arc grounding line selection apparatus based on RTDS | |
| CN107656196A (en) | A kind of dc circuit breaker routine testing equipment | |
| CN103616610A (en) | Simulation method of monitoring signals in power grid fault line | |
| Gopakumar et al. | Shunt capacitor bank switching transients: A tutorial and case study | |
| CN105510731B (en) | Power transformer medium voltage side power grid parallel resonance detects alarm method and system | |
| CN113643596B (en) | Power distribution demonstration method and device, electronic equipment and computer readable storage medium | |
| CN103944269B (en) | 10-kV grid distribution line pre-operating method and system | |
| CN110489729A (en) | The automatic switching method and system of disaster-ridden kind of the power grid of D5000-matpower coupling cascading failure model | |
| CN109038595A (en) | The low appearance of one kind/low anti-flexible fling-cut system and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190816 |
|
| WD01 | Invention patent application deemed withdrawn after publication |