CN105515166A - Voltage configuration scheme for switchable maintenance of busbar merging unit of double-busbar connection mode 110kV system of intelligent substation - Google Patents
Voltage configuration scheme for switchable maintenance of busbar merging unit of double-busbar connection mode 110kV system of intelligent substation Download PDFInfo
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- CN105515166A CN105515166A CN201610032836.9A CN201610032836A CN105515166A CN 105515166 A CN105515166 A CN 105515166A CN 201610032836 A CN201610032836 A CN 201610032836A CN 105515166 A CN105515166 A CN 105515166A
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- 230000003287 optical effect Effects 0.000 claims abstract description 12
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- 210000004027 cell Anatomy 0.000 claims description 102
- 238000000034 method Methods 0.000 claims description 13
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- 238000005204 segregation Methods 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 claims description 9
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/02—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which an auxiliary distribution system and its associated lamps are brought into service
Abstract
The invention discloses a voltage configuration scheme for switchable maintenance of a busbar merging unit of a double-busbar connection mode 110kV system of an intelligent substation. All 100kV interval merging units and bay level secondary equipment are added to an optical cable loop of a 110kV II section busbar merging unit, and all 100kV interval merging units and bay level secondary equipment are connected to an output optical port of the 110kV II section busbar merging unit through a newly added optical cable loop, so that when any busbar PT merging unit fails, substation operation and maintenance staff switch all intervals to another busbar to operate through a busbar switching operation to ensure that all intervals still operate normally, and then inform repair and maintenance staff to check and treat to the site. The maintenance of any busbar PT merging unit can also be arranged in a busbar switching mode, so that the stop of operating equipment is avoided.
Description
Technical field
The present invention relates to a kind of 110 kilovolts of system voltage allocation plans, particularly a kind of intelligent substation double bus scheme mode 110 kilovolts of system busbar merge cellses can the voltage allocation plan of back brake maintenance.
Background technology
As everyone knows, double bus scheme mode bus PT powers to the multiple equipment in multiple interval simultaneously, once the influence surface that breaks down is very big, deteriorated area protection seting coordinates, and even may cause electrical network large number quipments refused action or overstep tripping.In recent years; along with intelligent substation Accelerating The Construction with constantly put into operation; merge cells and intelligent terminal extensive use change the output of traditional transformer station, way of output research and development and design concept; and for Intelligent transformer station double bus scheme mode 110 kilovolts of system list configuration devices; the protection of the mono-configuration of all 110kV of current 220kV intelligent station and automatic safety device draw by the cascade of 110kVI section bus merge cells gets busbar voltage; as Fig. 1, shown in 2.DC power supply designs: 110kVI, II section bus merge cells DC power supply is drawn respectively and got DC power system I, II section power supply, and the protection of 110kV line segregation, observing and controlling, control and intelligent assembly power supply carry out power distribution according to odd even interval numbers.DC power supply I section is got at general odd-numbered interval, and II section power supply is got at even-numbered interval.As shown in Figure 3.The bus bar configuration scheme of prior art exists main problem to be had: 1) 110kVI section bus merge cells equipment fault, all 110kV line segregation voltages of its busbar voltage of cascade are caused to lose, the quick fraction zero-sequenceprotection of distance protection and band direction component is all blocked, only retain long delay PT broken string overcurrent protection and zero-sequenceprotection (operate time of generally adjusting is 3 ~ 4 seconds), arbitrary circuit or element fault under this power system operating mode, difficulty certainly will be coordinated to cause action of bypassing the immediate leadership because of protection seting, expand fault coverage, many circuits even may be caused to trip simultaneously.2) the bus merge cells of the protection at even-numbered interval, control and intelligent assembly and cascade mounts not in same section DC power supply, and under DC power supply I segment fault loses situation, all 110kV route protection voltage all loses, and the impact of generation is with 1) analyze.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, and provide a kind of under arbitrary bus PT merge cells failure condition, all intervals are poured into another section of bus by bus grid switching operation and run by transformer station's operation maintenance personnel, ensure that all intervals are still normally run, then the intelligent substation double bus scheme mode 110 kilovolts of system voltages processed are arranged.
A kind of intelligent substation double bus scheme mode 110 kilovolts of system busbar merge cellses can back brake maintenance voltage allocation plan, described all 110kV interval merge cellses and wall secondary device are by the cascade of optical cable loop or be connected directly to 110kVI section bus merge cells, it is characterized in that: also comprise and increase all 110kV interval merge cellses and the wall secondary device optical cable loop to 110kVII section bus merge cells, and all 110kV interval merge cellses and wall secondary device are accessed the defeated light-emitting window of 110kVII section bus merge cells by newly-increased optical cable loop, the protection of 110kVI section bus merge cells and odd-numbered line segregation, observing and controlling, control and intelligent assembly are articulated in I section DC power supply, the protection of 110kVII section bus merge cells and even-numbered line segregation, observing and controlling, control and intelligent assembly are articulated in II section DC power supply, the voltage cascade of all 110kV interval merge cellses and wall secondary device or the empty terminal arrangement of directly-attached loop get I section bus merge cells for all 110kV interval merge cellses and wall secondary device I mother are inputted cascade or draw, and II mother inputs cascade or draws and gets II section bus merge cells.The different merge cells information of cascade is received to each interval merge cells and carries out software differentiation upgrading processing, judge to distinguish mounting bus by interval disconnecting link location status information, when occurring the chain rupture of SV link for mounting bus cascaded loop, error code, during these exceptions of invalid bit, now protect the equipment such as observing and controlling to receive after merge cells sends above-mentioned information and be judged as that PT breaks, logic discrimination and process is carried out according to PT broken string, if when there is aforementioned abnormal information in the cascaded loop of non-mounting bus, layer equipment at equal intervals is now protected not process this information, send out mounting bus cascade SV abnormal information alarm prompt non-by wall merge cells, regulation and control O&M operator on duty notifies after obtaining this information by supervisory control system that repair and maintenance personnel are to site inspection process in time, for the direct wall secondary device drawing power taking pressure from bus merge cells, same requirement carries out software upgrading to voltage input testing mechanism, two sections of busbar voltage inputs are detected respectively and judged, comprise these abnormal informations of SV link, error code and invalid bit, certain section of busbar voltage after there is above-mentioned exception then secondary device carry out logic discrimination and process, concurrent correspondent section busbar voltage SV alarm signal according to this section of bus PT broken string.
Described wall secondary device refers to as equipment such as bus protection, public observing and controlling, fault oscillographs.
The present invention protects observing and controlling, control and intelligent assembly DC power supply to mount DC power supply paragraph to bus merge cells and each interval and strictly configures; the i.e. protection of 110kVI section bus merge cells and odd-numbered line segregation, observing and controlling, control and intelligent assembly are articulated in I section DC power supply, and the protection of 110kVII section bus merge cells and even-numbered line segregation, observing and controlling, control and intelligent assembly are articulated in II section DC power supply.Double loop line segregation is articulated in I, II section DC power supply respectively.Under can normal operating mode being ensured like this; the voltage at odd-numbered interval all obtains the female voltage of I from 110kVI section bus merge cells; the voltage at even intervals numbering interval all obtains the female voltage of II from 110kVII section bus merge cells; can not lose arbitrary section of DC power supply because of power supply cross-over configuration, cause spaced protecting control function to lose.
Described empty terminal concrete configuration is: the first empty terminal design table of amendment that provides according to designing unit of system integrator, SCD(is utilized entirely to stand CONFIG.SYS SubstationConfigurationDescription) configuration of configuration file to all 110kV interval merge cellses and secondary device modify, delete all 110kV interval merge cellses and the wall secondary device II section busbar voltage SMV line to 110kVI section bus merge cells, link all 110kV interval merge cellses and the wall secondary device II section busbar voltage SMV line to 110kVII section bus merge cells, during configuration SMV line, for recipient, first must add external signal, then internal signal is added.Add external signal configuration sequence as follows: the physical address 1) selecting SMV recipient; 2) the corresponding LD(SVLD of SMV recipient is selected); 3) LN at SMV line place is selected, (being generally fixed in LLNO); 4) Inputs option (empty terminal line) is selected; 5) external signal is selected; 6) FCDA in the transmit data set under the SMV accessing points of dispensing device is dragged to middle window, and discharges in order.Select internal signal configuration sequence: in receiving system, LD--from SMV accessing points " LN--" FC--" under DO, select corresponding DA, be dragged to the row at corresponding external signal place in middle window, namely the connection of external signal and internal signal is completed, also namely complete a SMV line, the amendment namely completing SCD file configuration generates.
After amendment generates above-mentioned SCD file, then all 110kV interval merge cellses and the IED device configuration tool of wall secondary device producer generate CID file after extracting with this IED relevant information in SCD file, and by installing to concrete IED equipment under device configuration tool, namely complete empty terminal arrangement.
After filling under completing the empty terminal arrangement of above-mentioned configuration and CID file, finally by the merge cells cascade of 110kVII section bus or the light mouth opening for subsequent use being connected to all 110kV interval merge cellses and wall secondary device, namely complete all empty terminal arrangement and light mouth configuration output.The power taking of directly drawing of 110kV interval merge cells cascade voltage and wall secondary device is press-fitted and puts the difference that difference is only voltage transmission agreement, the agreement of cascade voltage transmission is IEC60044-8, directly drawing the voltage transmission agreement of getting is IEC61850-9-2, needs classification configurations in layoutprocedure.
Empty terminal describes IED(intelligent electronic device IntelligentElectronicDevice) GOOSE(towards the transformer substation case Genericobjectorientedsubstationevents of general object), SV(sampled value Sampledvalue) input, output signal tie point general name, in order to identification procedure layer, wall and between contact secondary circuit signal, be equal to the screen terminal of traditional transformer station.
In sum, the present invention's following advantage compared to existing technology:
Intelligent substation double bus scheme mode of the present invention 110 kilovolts of system busbar merge cellses can back brake maintenance voltage allocation plan, under arbitrary bus PT merge cells failure condition, all intervals are poured into another section of bus by bus grid switching operation and run by transformer station's operation maintenance personnel, ensure that all intervals are still normally run, reinform repair and maintenance personnel on site check processing.Arbitrary bus PT merge cells maintenance can be arranged by the formula of falling maternal equally, avoids causing accompanying of operational outfit to stop.
Accompanying drawing explanation
Fig. 1 is the 110kVI section bus merge cells wiring schematic diagram of prior art.
Fig. 2 is the 110kVII section bus merge cells wiring schematic diagram of prior art.
Fig. 3 is 110kV system interval DC power supply wiring schematic diagram.
Fig. 4 is 110kVI section bus merge cells wiring schematic diagram of the present invention.
Fig. 5 is 110kVII section bus merge cells wiring schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in more detail.
Embodiment 1
A kind of intelligent substation double bus scheme mode 110 kilovolts of system busbar merge cellses can back brake maintenance voltage allocation plan, described all 110kV interval merge cellses and wall secondary device are by the cascade of optical cable loop or be connected directly to 110kVI section bus merge cells, it is characterized in that: also comprise and increase all 110kV interval merge cellses and the wall secondary device optical cable loop to 110kVII section bus merge cells, and all 110kV interval merge cellses and wall secondary device are accessed the defeated light-emitting window of 110kVII section bus merge cells by newly-increased optical cable loop, wiring is as Fig. 4, 5, the protection of 110kVI section bus merge cells and odd-numbered line segregation, observing and controlling, control and intelligent assembly are articulated in I section DC power supply, the protection of 110kVII section bus merge cells and even-numbered line segregation, observing and controlling, control and intelligent assembly are articulated in II section DC power supply, and double loop line segregation is articulated in I, II section DC power supply respectively, the voltage cascade of all 110kV interval merge cellses and wall secondary device or the empty terminal arrangement of directly-attached loop get I section bus merge cells for all 110kV interval merge cellses and wall secondary device I mother are inputted cascade or draw, and II mother inputs cascade or draws and gets II section bus merge cells.The different merge cells information of cascade is received to each interval merge cells and carries out software differentiation upgrading processing, judge to distinguish mounting bus by interval disconnecting link location status information, when occurring the chain rupture of SV link for mounting bus cascaded loop, error code, during these exceptions of invalid bit, now protect the equipment such as observing and controlling to receive after merge cells sends above-mentioned information and be judged as that PT breaks, logic discrimination and process is carried out according to PT broken string, if when there is aforementioned abnormal information in the cascaded loop of non-mounting bus, layer equipment at equal intervals is now protected not process this information, send out mounting bus cascade SV abnormal information alarm prompt non-by wall merge cells, regulation and control O&M operator on duty notifies after obtaining this information by supervisory control system that repair and maintenance personnel are to site inspection process in time, for the direct wall secondary device drawing power taking pressure from bus merge cells, same requirement carries out software upgrading to voltage input testing mechanism, two sections of busbar voltage inputs are detected respectively and judged, comprise these abnormal informations of SV link, error code and invalid bit, certain section of busbar voltage after there is above-mentioned exception then secondary device carry out logic discrimination and process, concurrent correspondent section busbar voltage SV alarm signal according to this section of bus PT broken string.
Described empty terminal concrete configuration is: the first empty terminal design table of amendment that provides according to designing unit of system integrator, SCD(is utilized entirely to stand CONFIG.SYS SubstationConfigurationDescription) configuration of configuration file to all 110kV interval merge cellses and secondary device modify, delete all 110kV interval merge cellses and the wall secondary device II section busbar voltage SMV line to 110kVI section bus merge cells, link all 110kV interval merge cellses and the wall secondary device II section busbar voltage SMV line to 110kVII section bus merge cells, during configuration SMV line, for recipient, first must add external signal, then internal signal is added.Add external signal configuration sequence as follows: the physical address 1) selecting SMV recipient; 2) the corresponding LD(SVLD of SMV recipient is selected); 3) LN at SMV line place is selected, (being generally fixed in LLNO); 4) Inputs option (empty terminal line) is selected; 5) external signal is selected; 6) FCDA in the transmit data set under the SMV accessing points of dispensing device is dragged to middle window, and discharges in order.Select internal signal configuration sequence: in receiving system, LD--from SMV accessing points " LN--" FC--" under DO, select corresponding DA, be dragged to the row at corresponding external signal place in middle window, namely the connection of external signal and internal signal is completed, also namely complete a SMV line, the amendment namely completing SCD file configuration generates.
After amendment generates above-mentioned SCD file, then all 110kV interval merge cellses and the IED device configuration tool of wall secondary device producer generate CID file after extracting with this IED relevant information in SCD file, and by installing to concrete IED equipment under device configuration tool, namely complete empty terminal arrangement.
After filling under completing the empty terminal arrangement of above-mentioned configuration and CID file, finally by the merge cells cascade of 110kVII section bus or the light mouth opening for subsequent use being connected to all 110kV interval merge cellses and wall secondary device, namely complete all empty terminal arrangement and light mouth configuration output.The power taking of directly drawing of 110kV interval merge cells cascade voltage and wall secondary device is press-fitted and puts the difference that difference is only voltage transmission agreement, the agreement of cascade voltage transmission is IEC60044-8, directly drawing the voltage transmission agreement of getting is IEC61850-9-2, needs classification configurations in layoutprocedure.
It is same as the prior art that the present embodiment does not state part.
Claims (2)
1. an intelligent substation double bus scheme mode 110 kilovolts of system busbar merge cellses can back brake maintenance voltage allocation plan, described all 110kV interval merge cellses and wall secondary device are by the cascade of optical cable loop or be connected directly to 110kVI section bus merge cells, it is characterized in that: also comprise and increase all 110kV interval merge cellses and the wall secondary device optical cable loop to 110kVII section bus merge cells, and all 110kV interval merge cellses and wall secondary device are accessed the defeated light-emitting window of 110kVII section bus merge cells by newly-increased optical cable loop, the protection of 110kVI section bus merge cells and odd-numbered line segregation, observing and controlling, control and intelligent assembly are articulated in I section DC power supply, the protection of 110kVII section bus merge cells and even-numbered line segregation, observing and controlling, control and intelligent assembly are articulated in II section DC power supply, the voltage cascade of all 110kV interval merge cellses and wall secondary device or the empty terminal arrangement of directly-attached loop get I section bus merge cells for all 110kV interval merge cellses and wall secondary device I mother are inputted cascade or draw, II mother inputs cascade or draws and gets II section bus merge cells, the different merge cells information of cascade is received to each interval merge cells and carries out software differentiation upgrading processing, judge to distinguish mounting bus by interval disconnecting link location status information, when occurring the chain rupture of SV link for mounting bus cascaded loop, error code, during these exceptions of invalid bit, now protect measuring and controlling equipment to receive after merge cells sends above-mentioned information and be judged as that PT breaks, logic discrimination and process is carried out according to PT broken string, if when there is aforementioned abnormal information in the cascaded loop of non-mounting bus, bay device is now protected not process this information, send out mounting bus cascade SV abnormal information alarm prompt non-by wall merge cells, regulation and control O&M operator on duty notifies after obtaining this information by supervisory control system that repair and maintenance personnel are to site inspection process in time, for the direct wall secondary device drawing power taking pressure from bus merge cells, same requirement carries out software upgrading to voltage input testing mechanism, two sections of busbar voltage inputs are detected respectively and judged, comprise these abnormal informations of SV link, error code and invalid bit, certain section of busbar voltage after there is above-mentioned exception then secondary device carry out logic discrimination and process, concurrent correspondent section busbar voltage SV alarm signal according to this section of bus PT broken string.
2. intelligent substation double bus scheme mode according to claim 1 110 kilovolts of system busbar merge cellses can back brake maintenance voltage allocation plan, it is characterized in that: described empty terminal concrete configuration is, first the empty terminal design table of amendment that provides according to designing unit of system integrator, the configuration of SCD configuration file to all 110kV interval merge cellses and secondary device is utilized to modify, delete all 110kV interval merge cellses and the wall secondary device II section busbar voltage SMV line to 110kVI section bus merge cells, link all 110kV interval merge cellses and the wall secondary device II section busbar voltage SMV line to 110kVII section bus merge cells, during configuration SMV line, for recipient, first must add external signal, then internal signal is added, add external signal configuration sequence as follows: the physical address 1) selecting SMV recipient, 2) the corresponding LD of SMV recipient is selected, 3) LN at SMV line place is selected, 4) empty terminal line Inputs option is selected, 5) external signal is selected, 6) FCDA in the transmit data set under the SMV accessing points of dispensing device is dragged to middle window, and discharges in order, select internal signal configuration sequence: in receiving system, LD--from SMV accessing points " LN--" FC--" under DO, select corresponding DA, be dragged to the row at corresponding external signal place in middle window, namely the connection of external signal and internal signal is completed, also namely complete a SMV line, the amendment namely completing SCD file configuration generates,
After amendment generates above-mentioned SCD file, then all 110kV interval merge cellses and the IED device configuration tool of wall secondary device producer generate CID file after extracting with this IED relevant information in SCD file, and by installing to concrete IED equipment under device configuration tool, namely complete empty terminal arrangement;
After filling under completing the empty terminal arrangement of above-mentioned configuration and CID file, finally by the merge cells cascade of 110kVII section bus or the light mouth opening for subsequent use being connected to all 110kV interval merge cellses and wall secondary device, namely all empty terminal arrangement and light mouth configuration output is completed, the power taking of directly drawing of 110kV interval merge cells cascade voltage and wall secondary device is press-fitted and puts the difference that difference is only voltage transmission agreement, the agreement of cascade voltage transmission is IEC60044-8, directly drawing the voltage transmission agreement of getting is IEC61850-9-2, needs classification configurations in layoutprocedure.
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| CN107015332A (en) * | 2017-05-26 | 2017-08-04 | 国家电网公司 | Optical cable connecting device between intelligent substation high-pressure side process layer and wall |
| CN110736609A (en) * | 2019-10-24 | 2020-01-31 | 云南电网有限责任公司昆明供电局 | optical port power testing method based on automatic matching |
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