CN207010235U - Electric loop system for high altitude regions wind power plant - Google Patents
Electric loop system for high altitude regions wind power plant Download PDFInfo
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- CN207010235U CN207010235U CN201720487315.2U CN201720487315U CN207010235U CN 207010235 U CN207010235 U CN 207010235U CN 201720487315 U CN201720487315 U CN 201720487315U CN 207010235 U CN207010235 U CN 207010235U
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Abstract
The utility model provides a kind of electric loop system for high altitude regions wind power plant.Electric loop system of the present utility model for high altitude regions wind power plant includes 110kV units and 35kV units；110kV units include 110kV overhead outlets interval subelement, #1 main transformer inlet wires interval subelement and 110kV bus-bar potential transformers interval subelement；35kV units include the first 35kV current collection line segregations subelement, the 2nd 35kV current collection line segregations subelement, reactive-load compensation SVG intervals subelement, change used and arc suppression coil interval subelement, #1 main transformer low-pressure sides interval subelement and 35kV bus-bar potential transformers interval subelement.
Description
Technical field
It the utility model is related to wind power plant electrical technology, more particularly to a kind of electrically returning for high altitude regions wind power plant
Road system.
Background technology
High altitude regions wind power plant multidigit is arranged in mountain region extrusion position, wind power generating set along long and narrow ridge, average sea
Journey is lifted in more than 2500m, wind power plant place area about 10km2More than, wide 1.0~2.0km, 5.0~6.0km or so is about,
Road bumpiness.
Booster stations 1 are routinely built in such wind power plant 49.5MW installed capacitys, and power network is connected to 1 time 110kV transmission line of electricity
Side transformer station, transmission distance are longer, it is contemplated that mountain region thunderstorm factor, double aerial earth wires are respectively provided with, to form the trapezoidal lightning protection field of force
Shielding.Due to height above sea level factor, insulation of electrical installation grade, degree of protection are required to higher.
However, often there is insulation of electrical installation grade and protection etc. when solving problem above in existing electric loop technology
The problem of level is not enough and fault handling time is longer.
Utility model content
It has been given below on brief overview of the present utility model, to provide on some sides of the present utility model
The basic comprehension in face.It should be appreciated that this general introduction is not on exhaustive general introduction of the present utility model.It is not intended to really
Fixed crucial or pith of the present utility model, nor intended limitation the scope of the utility model.Its purpose is only with letter
The form of change provides some concepts, in this, as the preamble in greater detail discussed later.
In consideration of it, the utility model provides a kind of electric loop system for high altitude regions wind power plant, with least
Solve that existing electric loop technology has insulation of electrical installation grade and degree of protection not enough and fault handling time is longer
Problem.
According to one side of the present utility model, there is provided a kind of electric loop system for high altitude regions wind power plant
System, the electric loop system for high altitude regions wind power plant include 110kV units and 35kV units；110kV units include
110kV overhead outlets interval subelement, #1 main transformer inlet wires interval subelement and 110kV bus-bar potential transformers interval subelement；
35kV units include the first 35kV current collection line segregations subelement, the 2nd 35kV current collection line segregations subelement, reactive-load compensation
SVG intervals subelement, change used and arc suppression coil interval subelement, #1 main transformer low-pressure sides interval subelement and 35kV buses electricity
Press transformer interval subelement；110kV overhead outlets interval subelement (11) and 110kV bus-bar potential transformers interval subelement
(13) 110kV#1 buses are respectively connecting to；One end of #1 main transformer inlet wires interval subelement (12) is connected to 110kV#1 buses, another
One end is connected to one end of #1 main transformer low-pressure sides interval subelement (25), #1 main transformer low-pressure sides interval subelement (25) it is another
End is connected to 35kV#1 buses, the first 35kV current collection line segregation subelements (21), the 2nd 35kV current collection line segregation subelements
(22), reactive-load compensation SVG intervals subelement (23), change used and arc suppression coil interval subelement (24) and 35kV busbar voltages are mutual
Sensor interval subelement (26) is respectively connecting to 35kV#1 buses.
Further, polarity of current transformer in the subelement of 110kV overhead outlets interval is as follows：The Current Mutual Inductance
The first end of device points to 110kV bus bar sides, and line scan pickup coil side is pointed at the second end, and direction of tide is that inflow bus is reversely active, outflow
Bus is positive active；Current transformer electric current in the subelement of 110kV overhead outlets interval is as follows than configuring：Electric current ratio is
800/5A or 400/5A, volume totally 5 of secondary winding, often rolls up totally 3 groups of taps；In the case where wind energy turbine set installed capacity is 49.5MW,
The electric current of current transformer in the subelement of 110kV overhead outlets interval is than selection 400/5A；It is in wind energy turbine set installed capacity
In the case of 9.9MW, the electric current of the current transformer in the subelement of 110kV overhead outlets interval is than selection 800/5A；In general assembly
In the case that machine capacity is 9.9MW, protected level electric current ratio selects 800/5A, class of accuracy 5P30；Observing and controlling electric current ratio selects 800/5A,
Class of accuracy 0.5S；Metering level electric current ratio selects 400/5A, class of accuracy 0.2S.
Further, 110kV units include #1 main transformer inlet wires interval subelement bus bar side current transformer, #1 main transformer inlet wires
It is as follows to be spaced subelement bus bar side polarity of current transformer：First end points to 110kV bus bar sides, and #1 master is pointed at the second end
Transformer side, direction of tide are that inflow bus is that reversely active, outflow bus is positive active；#1 main transformer inlet wires interval subelement
Bus bar side current transformer electric current is as follows than configuring：Electric current ratio is 800/5A or 400/5A, volume totally 6 of secondary winding, often rolls up totally 3 groups
Tap；In the case where wind power plant total installation of generating capacity is 9.9MW：Protect class of accuracy configuration as follows：Main transformer individual capacity is
50WMA, protected level, electric current ratio select 400/5A, class of accuracy 5P30；The configuration of observing and controlling class of accuracy is as follows：Observing and controlling electric current ratio is selected
400/5A, class of accuracy 0.5S；The configuration of accurate measurement level is as follows：Metering level electric current ratio selects 400/5A, class of accuracy 0.2S.
Further, #1 main transformers inlet wire interval subelement includes #1 main transformer body high voltage side current transformers, #1 main transformer sheets
Polarity of body high voltage side current transformer is as follows：First end points to 110kV bus bar sides, and transformer body, tide are pointed in the second end
Stream direction is that inflow bus is that reversely active, outflow bus is positive active；Secondary side tap is just taken out；#1 main transformer bodies high-pressure side
Current transformer electric current is as follows than configuring：Electric current ratio is 800/5A or 400/5A, secondary winding A phases volume 3, B phases volume 4, C phases 3
Volume, L phases volume 2, from 400/5A, zero sequence current mutual inductor L electric currents ratio selects 100/5A.
Further, #1 main transformer low-pressure sides interval subelement includes #1 main transformer 35kV bus bar side current transformers, #1 main transformers
Polarity of 35kV bus bar sides current transformer is as follows：First end points to 35kV bus bar sides, and transformer side, trend are pointed in the second end
Direction is that inflow bus is that reversely active, outflow bus is positive active；Secondary side tap is just taken out；#1 main transformer low-pressure side introns
The #1 main transformer 35kV bus bar side current transformer electric currents of unit are as follows than configuring：The #1 main transformers of #1 main transformer low-pressure sides interval subelement
35kV bus bar sides current transformer includes second group of first group of current transformer of main transformer 35kV bus bar sides and main transformer 35kV bus bar sides
Current transformer, the electric current ratio of second group of current transformer of first group of current transformer of 35kV bus bar sides and main transformer 35kV bus bar sides
It is each in second group of current transformer of first group of current transformer of 35kV bus bar sides and main transformer 35kV bus bar sides for 1200/5A
Group respectively includes 3 roll coil windings, wherein including 2 groups of taps per roll coil winding.
Further, polarity of current transformer of the first 35kV current collection line segregation subelements is as follows：First end refers to
To 35kV bus bar sides, line side is pointed at the second end, and direction of tide is that inflow bus is that reversely active, outflow bus is that forward direction has
Work(；The electric current of the current transformer of first 35kV current collection line segregation subelements is as follows than configuring：Between first 35kV collection electric lines
Include the first 35kV current collection line segregation subelements first group of part current transformer and first every the current transformer of subelement
Second group of part of 35kV current collection line segregation subelements current transformer, the first 35kV current collection line segregation subelements part first
The electric current ratio of group current transformer and the first second group of part of 35kV current collection line segregation subelements current transformer is 800/5A
Or 100/5A, the first first group of part of 35kV current collection line segregation subelements current transformer include 4 roll coil, the first 35kV collection
Second group of current transformer of electric line introns cell mesh includes 1 roll coil；Secondary tap is just to take out.
Further, polarity of current transformer of the 2nd 35kV current collection line segregation subelements is as follows：First end refers to
To 35kV bus bar sides, line side is pointed at the second end, and direction of tide is that inflow bus is that reversely active, outflow bus is that forward direction has
Work(；
The electric current of the current transformer of 2nd 35kV current collection line segregation subelements is as follows than configuring：
The current transformer of 2nd 35kV current collection line segregation subelements includes the 2nd 35kV current collection line segregation subelements
First group of part current transformer and the 2nd second group of part of 35kV current collection line segregation subelements current transformer, the 2nd 35kV
Current collection line segregation subelement first group of part current transformer and the 2nd second group of 35kV current collection line segregation subelements part
The electric current ratio of current transformer is 800/5A or 100/5A, and the 2nd first group of part of 35kV current collection line segregation subelements electric current is mutual
Sensor includes 4 roll coil, and the 2nd second group of part of 35kV current collection line segregation subelements current transformer includes 1 roll coil；Two
Secondary tap is just to take out.
Further, polarity of current transformer of change used and arc suppression coil interval subelement is as follows：First end refers to
To 35kV bus bar sides, transformer side is pointed at the second end, and direction of tide is that inflow bus is that reversely active, outflow bus is positive
It is active；The electric current of the current transformer of change used and arc suppression coil interval subelement is as follows than configuring：Change used and arc suppression coil
Being spaced the current transformer of subelement includes change used and arc suppression coil introns cell mesh first group of current transformer, 5kV1
Become second group of part current transformer and change used and the 3rd group of current transformer of arc suppression coil introns cell mesh used in number,
Change used and first group of current transformer of arc suppression coil introns cell mesh, change used and arc suppression coil introns cell mesh
Second group of current transformer and it is used change and the 3rd group of current transformer of arc suppression coil introns cell mesh electric current ratio into
800/5A or 100/5A, change used and first group of current transformer of arc suppression coil introns cell mesh include 2 roll coil, used
Become and second group of current transformer of arc suppression coil introns cell mesh includes 3 roll coil, change used and arc suppression coil introns
The 3rd group of current transformer of cell mesh includes 1 roll coil；Secondary tap is just to take out.
Further, polarity of the current transformer of reactive-load compensation SVG intervals subelement is as follows：First end points to 35kV
Transformer side is pointed at bus bar side, the second end, and direction of tide is that inflow bus is that reversely active, outflow bus is positive active；Nothing
The electric current of the current transformer of work(compensation SVG intervals subelement is as follows than configuring：The electric current of reactive-load compensation SVG intervals subelement is mutual
Sensor includes first group of current transformer of reactive-load compensation SVG introns cell mesh and reactive-load compensation SVG introns cell mesh
Second group of current transformer, first group of current transformer of reactive-load compensation SVG introns cell mesh and reactive-load compensation SVG intervals
The electric current ratio of second group of subelement part current transformer is 800/5A or 400/5A or 100/5A, reactive-load compensation SVG introns
First group of current transformer of cell mesh includes 1 roll coil, reactive-load compensation SVG introns second group of current transformer of cell mesh
Including 4 roll coil；Secondary tap is just to take out.
Further, 110kV units include the voltage transformer of 110kV bus-bar potential transformer introns cell mesh,
Voltage transformer in 110kV bus-bar potential transformer introns cell mesh is arranged in parallel on 110kV buses：The voltage is mutual
The first end of sensor points to 110kV bus bar sides, and line scan pickup coil side is pointed at the second end, and direction of tide is that inflow bus is reverse active, stream
It is active for forward direction to go out bus；Voltage transformer voltage ratio configuration in 110kV bus-bar potential transformer introns cell mesh is such as
Under：Voltage ratio is：110/0.1, volume totally 4 of secondary winding often rolls up totally 3 groups of taps, and secondary tap is just to take out；1S volumes of the first volume is accurate
True level is 0.2, for measuring；2S volumes of class of accuracy of volume Two is 0.5, for observing and controlling；The 3S volumes of class of accuracy of volume three is 3P, is used for
Protection；4S volumes of class of accuracy 3P of Volume Four, for protecting；110kV units include the electricity of 110kV overhead outlet introns cell mesh
Transformer is pressed, the voltage transformer in 110kV overhead outlet introns cell mesh is arranged in parallel on the 110kV circuits：Should
The first end of voltage transformer points to 110kV bus bar sides, and line scan pickup coil side is pointed at the second end, and direction of tide is that inflow bus is reversely to have
Work(, outflow bus are positive active；Voltage transformer voltage ratio configuration in 110kV overhead outlet introns cell mesh is such as
Under：Voltage ratio is：110/0.1, volume totally 1 of secondary winding often rolls up totally 3 groups of taps, and secondary tap is just to take out；Monovolume class of accuracy
3P, individual event voltage A609 are used for protection device, for comparing 110kV bus individual events voltage magnitude, pressure difference, angular difference, frequency difference etc.；
35kV units include the voltage transformer of 35kV bus-bar potential transformer introns cell mesh, between 35kV bus-bar potential transformers
It is arranged in parallel every subelement portion voltage transformer on the 35kV buses：It is female that the first end of the voltage transformer points to 110kV
Line scan pickup coil side is pointed at line side, the second end, and direction of tide is that inflow bus is that reversely active, outflow bus is positive active；35kV is female
Voltage transformer voltage ratio configuration in line voltage transformer introns cell mesh is as follows：Voltage ratio is 35/0.1, it is secondary around
Volume totally 3 of group, often rolls up totally 3 groups of taps, secondary tap is just to take out；1S volumes of class of accuracy of the first volume is 0.2, for observing and controlling and metering；
2S volumes of class of accuracy of volume Two is 3P, for protecting；The 3S volumes of class of accuracy of volume three is 3P, for protecting.
Electric loop system of the present utility model for high altitude regions wind power plant, since in September, 2014, in cloud
Three Taishan wind power plant, pine nut mountain breeze electric field, tile kiln wind power plant areas are tried out, and by the application more than 2 years, work well, can have
Influence of fire scope caused by effect control CT open circuits and PT short circuits, improves safety in production efficiency, saves fault handling time,
And follow-up operation service work difficulty can be mitigated, power generation loss is reduced, so as to increase economic efficiency.
High altitude regions wind power plant, it is relative to the requirement of electrical equipment indices to meet its location specific condition
It is higher, high-tension switch cabinet is inflated using high-pressure sealed formula combined electric (GIS), SF6 more, the stabilization of wind power plant operation can be improved
Property, avoid each winding coil turn-to-turn fault caused by climate reasons.According to electrical equipment actual installation position, technological debugging report
Material based on announcement, with reference to on-site actual situations and power industry standard and requirement, draw electric current, voltage circuit sketch input
Using each group of coil direction of tide of reflection that can be clear and intuitive, electric current ratio, installation site, earth point etc..
By below in conjunction with detailed description of the accompanying drawing to most preferred embodiment of the present utility model, it is of the present utility model these with
And other advantages will be apparent from.
Brief description of the drawings
The utility model can by reference to being better understood below in association with the description given by accompanying drawing, wherein
Same or analogous reference has been used in all of the figs to represent same or similar part.The accompanying drawing is together with
The detailed description in face includes in this manual and forms the part of this specification together, and for further illustrating
Bright preferred embodiment of the present utility model and explanation principle and advantage of the present utility model.In the accompanying drawings：
Fig. 1 is schematically show the electric loop system of the present utility model for high altitude regions wind power plant one
The structure chart of example；
Fig. 2 is schematically show the electric loop system of the present utility model for high altitude regions wind power plant one
The system diagram of concrete application example；
Fig. 3 is that 110kV sends out transmission line of electricity bis- sketches of CT.
It will be appreciated by those skilled in the art that element in accompanying drawing is just for the sake of showing for the sake of simple and clear,
And be not necessarily drawn to scale.For example, the size of some elements may be exaggerated relative to other elements in accompanying drawing, with
Just it is favorably improved the understanding to the utility model embodiment.
Embodiment
One exemplary embodiment of the present utility model is described hereinafter in connection with accompanying drawing.Rise for clarity and conciseness
See, do not describe all features of actual embodiment in the description.It should be understood, however, that developing any this reality
It must be made during embodiment much specific to the decision of embodiment, to realize the objectives of developer, example
Such as, those restrictive conditions related to system and business are met, and these restrictive conditions may be with embodiment not
Change together.In addition, it will also be appreciated that although development is likely to be extremely complex and time-consuming, to having benefited from
For those skilled in the art of present disclosure, this development is only routine task.
Herein, it is also necessary to which explanation is a bit, in order to avoid having obscured the utility model because of unnecessary details, attached
It illustrate only and according to the closely related apparatus structure of scheme of the present utility model and/or processing step, and eliminate in figure
The little other details with the utility model relation.
Embodiment of the present utility model provides a kind of electric loop system for high altitude regions wind power plant, for height
The electric loop system of height above sea level mountain region wind power plant includes 110kV units and 35kV units；110kV units are maked somebody a mere figurehead out including 110kV
Line interval subelement, #1 main transformer inlet wires interval subelement and 110kV bus-bar potential transformers interval subelement；35kV units include
First 35kV current collection line segregations subelement, the 2nd 35kV current collection line segregations subelement, reactive-load compensation SVG intervals subelement,
Change used and arc suppression coil interval subelement, #1 main transformer low-pressure sides interval subelement and bus-bar potential transformer interval subelement.
Fig. 1 gives the knot of an example of the electric loop system of the present utility model for high altitude regions wind power plant
Composition.
As shown in figure 1, the electric loop system for high altitude regions wind power plant, including 110kV units 1 and 35kV units
2；110kV units 1 include 110kV overhead outlets interval subelement 11, and (and the 110kV not shown in Fig. 1 sends power transmission line outside
Road), #1 main transformer inlet wires interval subelement 12 and 110kV bus-bar potential transformers interval subelement 13；35kV units 2 include first
35kV current collection line segregations subelement 21, the 2nd 35kV current collection line segregations subelement 22, reactive-load compensation SVG intervals subelement
23rd, change used and arc suppression coil interval subelement 24, #1 main transformer low-pressure sides interval subelement 25 and 35kV bus-bar potential transformers
It is spaced subelement 26.
Multiple implementations of the present utility model are described with reference to Fig. 1 and Fig. 2.
According to an implementation, the electric current in the 110kV overhead outlets interval subelement 11 that 110kV units 1 include is mutual
Polarity of sensor is as follows：The first end P1 of the current transformer points to 110kV bus bar sides, and the second end P2 points to line scan pickup coil side, tide
Stream direction is that inflow bus is that reversely active, outflow bus is positive active.
Current transformer electric current in 110kV overhead outlets interval subelement 11 is as follows than configuring：Electric current ratio is 800/5A
Or 400/5A, volume totally 5 of secondary winding, often roll up totally 3 groups of taps.
In the case where wind energy turbine set installed capacity is 49.5MW, the electric current in 110kV overhead outlets interval subelement 11 is mutual
The electric current of sensor is than selection 400/5A.
In the case where wind energy turbine set installed capacity is 9.9MW, the Current Mutual Inductance in 110kV overhead outlets interval subelement 11
The electric current of device is than selection 800/5A.
In the case where total installation of generating capacity is 9.9MW, protected level electric current ratio selects 800/5A, class of accuracy 5P30；Observing and controlling electricity
Stream ratio selects 800/5A, class of accuracy 0.5S；Metering level electric current ratio selects 400/5A, class of accuracy 0.2S.
In addition, according to an implementation, the bus in the #1 main transformer inlet wires interval subelement 12 that 110kV units 1 include
Polarity of side current transformer (referred to as " #1 main transformer inlet wires interval subelement bus bar side current transformer ") is as follows：First end
P1 points to 110kV bus bar sides, and the second end P2 points to #1 main transformers side, and direction of tide is that inflow bus is reversely active, outflow
Bus is positive active.
#1 main transformer inlet wires interval subelement bus bar side current transformer electric current is as follows than configuring：Electric current ratio be 800/5A or
400/5A, volume totally 6 of secondary winding, often rolls up totally 3 groups of taps.
In the case where wind power plant total installation of generating capacity is 9.9MW：
Protect class of accuracy configuration as follows：Main transformer individual capacity is 50WMA, and protected level, electric current ratio select 400/5A, accurate
True level 5P30.
The configuration of observing and controlling class of accuracy is as follows：Observing and controlling electric current ratio selects 400/5A, class of accuracy 0.5S.
The configuration of accurate measurement level is as follows：Metering level electric current ratio selects 400/5A, class of accuracy 0.2S.
According to an implementation, #1 main transformer inlet wires interval subelement 12 includes main transformer body high voltage side current transformer,
Polarity of main transformer body high voltage side current transformer is as follows：First end P1 points to 110kV bus bar sides, and the second end P2, which is pointed to, to be become
Depressor body, direction of tide are that inflow bus is that reversely active, outflow bus is positive active；Secondary side tap is just taken out.
Main transformer body high voltage side current transformer current is as follows than configuring：Electric current ratio is 800/5A or 400/5A, it is secondary around
Group A phases volume 3, B phases volume 4, C phases volume 3, L phases volume 2, from 400/5A, zero sequence current mutual inductor L electric currents ratio selects 100/5A.
In addition, according to an implementation, #1 main transformer low-pressure sides interval subelement 25 includes #1 main transformer 35kV bus bar sides electricity
Current transformer, #1 main transformer 35kV bus bar sides polarity of current transformer are as follows：First end P1 points to 35kV bus bar sides, the second end
P2 points to transformer side, and direction of tide is that inflow bus is that reversely active, outflow bus is positive active；Secondary side tap is just
Take out.
#1 main transformer 35kV bus bar side current transformer electric currents are as follows than configuring：
#1 main transformer 35kV bus bar sides current transformer includes first group of current transformer of main transformer 35kV bus bar sides and main transformer
Second group of current transformer of 35kV bus bar sides, first group of current transformer of main transformer 35kV bus bar sides and main transformer 35kV bus bar sides
The electric current ratio of two groups of current transformers is 1200/5A, first group of current transformer of main transformer 35kV bus bar sides and main transformer 35kV buses
Each group in the current transformer of second group of side respectively includes 3 roll coil windings, wherein including 2 groups of taps per roll coil winding.
In addition, according to an implementation, the current transformer in the first 35kV current collection line segregations subelement 21 is once
Polarity is as follows：First end P1 points to 35kV bus bar sides, and the second end P2 points to line side, and direction of tide is that inflow bus is reversely to have
Work(, outflow bus are positive active.
The electric current of current transformer in first 35kV current collection line segregations subelement 21 is as follows than configuring：
Current transformer in first 35kV current collection line segregations subelement 21 includes the first 35kV current collections line segregation
First group of current transformer of cell mesh and the first second group of part of 35kV current collection line segregation subelements current transformer, first
35kV current collection line segregation subelements first group of part current transformer and the first 35kV current collection line segregation subelements part
The electric current ratio of two groups of current transformers is 800/5A or 100/5A, and the first first group of 35kV current collection line segregation subelements part is electric
Current transformer includes 4 roll coil, and the first second group of part of 35kV current collection line segregation subelements current transformer includes 1 spiral
Circle；Secondary tap is just to take out.
According to an implementation, a polarity of the current transformer in the 2nd 35kV current collection line segregations subelement 22
It is as follows：First end P1 point to 35kV bus bar sides, the second end P2 point to line side, direction of tide be flow into bus be reversely it is active,
It is active for forward direction to flow out bus.
The electric current of current transformer in 2nd 35kV current collection line segregations subelement 22 is as follows than configuring：
Current transformer in 2nd 35kV current collection line segregations subelement 22 includes the 2nd 35kV current collections line segregation
First group of current transformer of cell mesh and the 2nd second group of part of 35kV current collection line segregation subelements current transformer, second
35kV current collection line segregation subelements first group of part current transformer and the 2nd 35kV current collection line segregation subelements part
The electric current ratio of two groups of current transformers is 800/5A or 100/5A, and the 2nd first group of 35kV current collection line segregation subelements part is electric
Current transformer includes 4 roll coil, and the 2nd second group of part of 35kV current collection line segregation subelements current transformer includes 1 spiral
Circle；Secondary tap is just to take out.
According to an implementation, polarity of current transformer in change used and arc suppression coil interval subelement 24 is such as
Under：First end P1 point to 35kV bus bar sides, the second end P2 point to transformer side, direction of tide be flow into bus be reversely it is active,
It is active for forward direction to flow out bus.
The electric current of change used and the current transformer in arc suppression coil interval subelement 24 is as follows than configuring：
Current transformer in change used and arc suppression coil interval subelement 24 includes change used and arc suppression coil introns
First group of current transformer of cell mesh, change used and second group of current transformer of arc suppression coil introns cell mesh and used
Change and the 3rd group of current transformer of arc suppression coil introns cell mesh, change used and arc suppression coil introns cell mesh first
Group current transformer, change used and second group of current transformer of arc suppression coil introns cell mesh and change used and arc suppression coil
The electric current ratio of the 3rd group of current transformer of introns cell mesh is 800/5A or 100/5A,
Change used and first group of current transformer of arc suppression coil introns cell mesh include 2 roll coil, used to become and disappear
Second group of current transformer of arc coil introns cell mesh includes 3 roll coil, change used and arc suppression coil interval subelement portion
The 3rd group of current transformer is divided to include 1 roll coil；Secondary tap is just to take out.
According to an implementation, polarity of current transformer in reactive-load compensation SVG intervals subelement 23 is as follows：The
One end P1 sensing 35kV bus bar sides, the second end P2 point to transformer side, and direction of tide is that inflow bus is reverse active, outflow mother
Line is positive active.
The electric current of current transformer in reactive-load compensation SVG intervals subelement 23 is as follows than configuring：
Current transformer in reactive-load compensation SVG intervals subelement 23 includes reactive-load compensation SVG introns cell mesh the
One group of current transformer and reactive-load compensation SVG introns second group of current transformer of cell mesh, reactive-load compensation SVG introns lists
The electric current ratio of the first first group of current transformer in part and reactive-load compensation SVG introns second group of current transformer of cell mesh is
800/5A or 400/5A or 100/5A.
First group of current transformer of reactive-load compensation SVG introns cell mesh includes 1 roll coil, reactive-load compensation SVG intervals
Second group of subelement part current transformer includes 4 roll coil；Secondary tap is just to take out.
110kV units 1 include the voltage transformer of 110kV bus-bar potential transformers interval subelement (13) part, 110kV
Voltage transformer in bus-bar potential transformer interval subelement (13) part is arranged in parallel on 110kV buses：The voltage is mutual
The first end P1 of sensor points to 110kV bus bar sides, and the second end P2 points to line scan pickup coil side, and direction of tide is that inflow bus is reversely to have
Work(, outflow bus are positive active.
Voltage transformer voltage ratio configuration in 110kV bus-bar potential transformer introns cell mesh is as follows：Voltage ratio
For：110/0.1, volume totally 4 of secondary winding often rolls up totally 3 groups of taps, and secondary tap is just to take out.
1S volumes of class of accuracy of the first volume is 0.2, for measuring；2S volumes of class of accuracy of volume Two is 0.5, for observing and controlling；Volume three
3S volumes of class of accuracy is 3P, for protecting；4S volumes of class of accuracy 3P of Volume Four, for protecting.
110kV units 1 include the voltage transformer of the part of 110kV overhead outlets interval subelement 11,110kV overhead outlets
Voltage transformer in the part of subelement 11 of interval is arranged in parallel on the 110kV circuits：The first end P1 of the voltage transformer
110kV bus bar sides are pointed to, the second end P2 points to line scan pickup coil side, and direction of tide is that inflow bus is that reversely active, outflow bus is just
To active.
Voltage transformer voltage ratio configuration in the part of 110kV overhead outlets interval subelement 11 is as follows：Voltage ratio is：
110/0.1, volume totally 1 of secondary winding often rolls up totally 3 groups of taps, and secondary tap is just to take out.
Monovolume class of accuracy 3P, individual event voltage A609 are used for protection device, for compare 110kV bus individual events voltage magnitude,
Pressure difference, angular difference, frequency difference etc..
35kV units 1 include the voltage transformer of the part of 35kV bus-bar potential transformers interval subelement 26,35kV buses
The portion voltage transformer of voltage transformer interval subelement 26 is arranged in parallel on the 35kV buses：The first of the voltage transformer
P1 is held to point to 110kV bus bar sides, the second end P2 points to line scan pickup coil side, and direction of tide is that inflow bus is reverse active, outflow bus
It is active for forward direction.
Voltage transformer voltage ratio configuration in 35kV bus-bar potential transformer introns cell mesh is as follows：Voltage ratio is
35/0.1, volume totally 3 of secondary winding often rolls up totally 3 groups of taps, and secondary tap is just to take out.
1S volumes of class of accuracy of the first volume is 0.2, for observing and controlling and metering；2S volumes of class of accuracy of volume Two is 3P, for protecting；The
The 3S volumes of class of accuracies of volume three are 3P, for protecting.
It should be noted that in above description, the first end of each current transformer (or voltage transformer) is designated as P1,
Two ends are designated as P2, so P1 (or P2) does not refer to the first end (the second end) of same current transformer (or voltage transformer),
But there is each current transformer (or voltage transformer) corresponding P1 (or P2) to hold.
Preferred embodiment
By taking 110kV Miniature wind electric fields as an example, booster stations typically configure 1 time 110kV and send circuit, 1 section of 110kV buses, 1 outside
Platform 50MVA main transformers, 1 section of 35kV bus etc., basic configuration is as follows：
(1), 110kV parts：The general mode of connection for using single bus scheme, it is indoor to use GIS closed combined electrics
Single-row arrangement, 3 110kV intervals, include 1,110kV overhead outlets interval, 1, #1 main transformer inlet wires interval, 110kV buses electricity
Press 1, transformer interval.
(2), 35kV parts：The general mode of connection for using single bus scheme, indoor armored fixed switching cabinet or SF6
The single-row arrangement of inflating switch cabinet, 6 35kV intervals are set, include 35kV current collections line segregation 2, reactive-load compensation SVG intervals 1
It is individual, change used and 1, arc suppression coil interval, 1, #1 main transformer low-pressure sides interval, 1, bus-bar potential transformer interval.
Current loop analyzes (illustrating by taking certain 110kV wind power plant as an example)
(1) 110kV overhead outlets interval subelement
Polarity of current transformer：(i.e. described first end P1 above) points to 110kV bus bar sides at P1 ends, and P2 ends are (on i.e.
Second end P2 described in text) line scan pickup coil side is pointed to, direction of tide is that inflow bus is that reversely active, outflow bus is that forward direction is active, i.e.,：
P2 inflow P1 is bear work(, P1 inflows P2 is just active.
Current transformer electric current is than configuration：This transformer current ratio can be 800/5A, 400/5A, volume totally 5 of secondary winding, often
Roll up totally 3 groups of taps, head end S1, tail end S2, S3；When electric current is than 800/5A, secondary coil is just taking out head end S1, tail end S3；Electric current
During than 400/5A, head end S1, tail end S2 are just being taken out in secondary tap.Secondary side tap is just taken out.
Electric current than choosing then typically commonly use three kinds of modes：
First way, wind energy turbine set installed capacity 49.5MW, electric current is than optional 400/5A；
The second way, wind energy turbine set installed capacity 9.9MW, electric current is than optional 800/5A；
The third mode, total installation of generating capacity 9.9MW, be divided to for two phases built, one, the second phase be 49.5MW, it is total to be thought of as installation
Capacity, to reduce later stage construction and access difficulty, a phase can also use 800/5A, not have to then change again when the second phase is accessed
Secondary lead wires tap, effectively avoid because modification CT secondary connections and caused by disaster hidden-trouble.In a manner of the third relatively conventional
Exemplified by：
Protect class of accuracy configuration：To ensure line protective devices action message, malfunction is prevented, therefore protected level electric current ratio is selected
800/5A, class of accuracy 5P30.(note：Protected level winding P is represented, when primary current reaches 30 times of rated current, error can not surpass
Cross ± 5%)；
Observing and controlling class of accuracy configures：Observing and controlling electric current ratio should be with protective current than identical, from 800/5A, class of accuracy 0.5S；
Accurate measurement level configures：To improve ammeter measuring precision, therefore measure level electric current ratio and select 400/5A, class of accuracy
0.2S.(note：In 20% rated current, precision has descended to 0.2%, S and refers to specific current mutual inductance 0.2S levels transformer
Device, strong antijamming capability, it is desirable to which precision is sufficiently high in 1% to 120% load range, typically takes 5 load points to measure its mistake
Difference is less than defined scope.What it is without S is to take 4 load points to measure its error to be less than defined scope, and 0.2 grade of transformer exists
During 20% rated current, 0.35%) precision would fall to.
110kV wind energy turbine set installed capacities are typically small, and wind power plant booster stations high-pressure side is mostly single bus scheme mode, wouldn't
Bus protection is configured, it is standby that corresponding 2 to bus protection CT second siding rings shut ground connection in CT terminal boxs；Such as booster stations height
Pressure side 110kV is single busbar band section wiring mode or booster stations grid integration voltage is 110kV ratings above, then needs to configure
Bus protection.So that certain wind power plant 110kV sends out circuit as an example, high-pressure side is 110kV single bus scheme modes, as shown in Figure 2.
1st, (1.1), #1 main transformer inlet wires interval subelement
Polarity of 110kV bus bar sides current transformer：110kV bus bar sides are pointed at P1 ends, and #1 main transformers are pointed at P2 ends
Side, direction of tide are that inflow bus is that reversely active, outflow bus is that forward direction is active, i.e.,：P2 flows into P1 to bear work(, P1 inflows
P2 is just active.
Current transformer electric current is than configuration：This transformer current ratio is 800/5A, 400/5A, volume totally 6 of secondary winding, is often rolled up
Totally 3 groups of taps, secondary side head end S1, tail end S2, S3 identical with a polarity；When electric current is than 800/5A, secondary coil takes out head
Hold S1, tail end S3；When electric current is than 400/5A, head end S1, tail end S2 are taken out in secondary tap.
As wind power plant total installation of generating capacity 9.9MW, be divided to for two phases built, one, second phase installation be 49.5MW, to consider one, two
Phase total installed capacity, main transformer individual capacity 100WMA, electric current ratio can use 800/5A；Wind power plant total installation of generating capacity 9.9MW, point
Two phases build, one, second phase installation be 49.5MW, respectively set two main transformers, main transformer individual capacity 50WMA, electric current ratio
400/5A can be used.By taking certain wind power plant main transformer individual capacity 50WMA as an example.
Protect class of accuracy configuration：Main transformer individual capacity 50WMA, to ensure protection equipment for transformer action message, prevent
Only malfunction, protected level, electric current ratio are selected with transformer body high-pressure side sleeve pipe identical electric current than 400/5A, class of accuracy 5P30.
Observing and controlling class of accuracy configures：Observing and controlling electric current ratio should be with protective current than identical, and electric current ratio selects 400/5A, class of accuracy
0.5S。
Accurate measurement level configures：To improve ammeter measuring precision, therefore measure level electric current ratio and select 400/5A, class of accuracy
0.2S。
(1.2), #1 main transformers inlet wire interval subelement
Polarity of body high voltage side current transformer：110kV bus bar sides are pointed at P1 ends, and transformer body is pointed at P2 ends,
Direction of tide is that inflow bus is that reversely active, outflow bus is that forward direction is active, i.e.,：P2 flows into P1 to bear work(, P1 inflows P2
To be just active.Secondary side tap is just taken out.Labeling head table is gone out according to conventional 110kV main transformers body bushing, carried out secondary
Side tap selection, proportioning are introduced shown in table 1.
Current transformer electric current is than configuration：This transformer current ratio is 800/5A, 400/5A, secondary winding A phases volume 3, B
Phase volume 4, C phases volume 3, L phases volume 2, to be matched with main transformer 110kV bus bar side current transformer electric current ratios, from 400/5A, zero sequence electricity
Current transformer L electric currents ratio should be with gap current transformer current than identical, from 100/5A.
Secondary tap, A phase head end S1--- tail end S2, B phase head end S3--- tail end S4, C phase head end S1--- tail end S2, extremely
The observing and controlling of SVG switch boards uses；L phases the 2nd group of head end S5--- tail end S5 of the 1st group of head end S1--- tail end S2, L phase, protected to main transformer
Shield, failure recorded broadcast use.Remaining volume is standby by shutting ground connection in body terminal case.
(1.3), #1 main transformer low-pressure sides interval subelement
Polarity of 35kV bus bar sides current transformer：35kV bus bar sides are pointed at P1 ends, and transformer side, trend are pointed in P2 ends
Direction is that inflow bus is that reversely active, outflow bus is that forward direction is active, i.e.,：P2 inflow P1 is bear work(, P1 inflows P2 is just
It is active.Secondary side tap is just taken out.
Current transformer electric current is than configuration：Totally 2 groups of electric current ratios are 1200/5A to this transformer, every group of 3 roll coil windings totally 6
Volume, often rolls up totally 2 groups of taps, head end S1, tail end S2；When electric current is than 1200/5A, secondary coil is just taking out head end S1, tail end S2.With
Exemplified by certain wind power plant main transformer individual capacity 50WMA.
Table 1：#1 main transformer secondary coil taps
(1.4) the first 35kV current collection line segregation subelements
Polarity of current transformer：35kV bus bar sides are pointed at P1 ends, and line side is pointed at P2 ends, and direction of tide is female to flow into
Line is that reversely active, outflow bus is that forward direction is active, i.e.,：P2 inflow P1 is bear work(, P1 inflows P2 is just active.
Current transformer electric current is than configuration：Totally 2 groups of this transformer, electric current ratio are 800/5A, 100/5A, the 1st group of 4 spirals
Circle, the 2nd group of 1 roll coil, volume totally 5, head end S1, tail end S2.Secondary tap is just to take out.
(1.5) the 2nd 35kV current collection line segregation subelements
Polarity of current transformer：35kV bus bar sides are pointed at P1 ends, and line side is pointed at P2 ends, and direction of tide is female to flow into
Line is that reversely active, outflow bus is that forward direction is active, i.e.,：P2 inflow P1 is bear work(, P1 inflows P2 is just active.
Current transformer electric current is than configuration：Totally 2 groups of this transformer, electric current ratio are 800/5A, 100/5A, the 1st group of 4 spirals
Circle, the 2nd group of 1 roll coil, volume totally 5, head end S1, tail end S2.Secondary tap is just to take out.
(1.6) change used and arc suppression coil interval subelement
Polarity of current transformer：35kV bus bar sides are pointed at P1 ends, and transformer side is pointed at P2 ends, and direction of tide is inflow
Bus is that reversely active, outflow bus is that forward direction is active, i.e.,：P2 inflow P1 is bear work(, P1 inflows P2 is just active.
Current transformer electric current is than configuration：Totally 3 groups of this transformer, electric current ratio are 800/5A, 100/5A, the 1st group of 2 spirals
Circle, the 2nd group of 3 roll coil, the 3rd group of 1 roll coil, volume totally 5, head end S1, tail end S2.Secondary tap is just to take out.
(1.7) reactive-load compensation SVG intervals subelement
Polarity of current transformer：35kV bus bar sides are pointed at P1 ends, and transformer side is pointed at P2 ends, and direction of tide is inflow
Bus is that reversely active, outflow bus is that forward direction is active, i.e.,：P2 inflow P1 is bear work(, P1 inflows P2 is just active.
Current transformer electric current is than configuration：Totally 2 groups of this transformer, electric current ratio are 800/5A, 400/5A, 100/5A, the 1st
1 roll coil of group, the 2nd group of 4 roll coil, volume totally 5, head end S1, tail end S2.Secondary tap is just to take out.
2nd, voltage circuit figure application
2.1st, 110kV bus-bar potential transformers spacer units：110kV busbar voltages part, PT voltage ratios：110/0.1, the
A roll of 1S volumes of class of accuracy is 0.2, is mainly used in measuring；2S volumes of class of accuracy of volume Two is 0.5, is mainly used in observing and controlling；The 3S of volume three
Volume class of accuracy is 3P, mainly for the protection of；4S volumes of class of accuracy 3P of Volume Four (L volumes of open delta), mainly for the protection of and 3S
Roll up the residual voltage being compared.(note：Under normal circumstances, there is no voltage on open delta, when system single-phase earthing occurs,
Voltage transformer first winding just has no-voltage in a phase, cause corresponding to also no-voltage in secondary winding, then open delta
On voltage just occurs.Pass through the voltage on detection opening triangle, it is possible to know whether high-pressure system has grounding phenomenon.)
2.2nd, 110kV overhead outlets interval subelement：110kV line voltage distributions part, the access of individual event line voltage transformer
110kV circuit A phases, PT voltage ratios：110/0.1,1S volumes of class of accuracy 3P of volume totally 1, individual event voltage A609 mainly for the protection of device,
Judge circuit A phases and bus A same phases, i.e.,：Amplitude, pressure difference, angular difference, frequency difference carry out individual event or three-phase 1 in allowed band
Secondary reclosing.(by taking certain 110kV wind power plant as an example, 110kV secondary voltages trend.)
2.3rd, 35kV bus-bar potential transformers interval subelement：35kV busbar voltages part, PT voltage ratios：35/0.1 the
A roll of 1S volumes of class of accuracy is 0.2, is mainly used in observing and controlling and metering；2S volumes of class of accuracy of volume Two is 3P, mainly for the protection of；3rd
It is 3P to roll up 3S volumes of class of accuracy, mainly for the protection of.(by taking certain 110kV wind power plant as an example, 35kV secondary voltages trend.)
3rd, electric current, voltage circuit ground connection point analysis
3.1st, current earthing point, per roll coil, equal 1 point of ground connection, main transformer protection device are judgement ratio brake or ratio
Differential CT wiring 1 point of ground connection on the outside of protection screen cabinet line bank, direction of tide differ 180 °；Bus differential protection device is big poor to judge
With small difference 180 ° are differed in poor 1 point of ground connection of flow point, direction of tide；Remaining 1 point of ground connection of terminal box junction of two streams where CT.
3.2nd, voltage ground point, to prevent voltage N point drifts, 110kV protected levels N600 and 35kV protected levels N600 is in public affairs
With 1 point of ground connection after observing and controlling screen parallel connection；Level N600 is measured in 1 point of ground connection of kilowatt-hour meter screen.
Electrical equipment can be checked according to actual installation position, determine polarity of electrical equipment, according to electrically setting
Standby no-load voltage ratio configuration secondary lead wires tap, secondary direction of tide is accessed by relay protection device principle and class of accuracy, and closed
Key section is summarized and is depicted as sketch.According to sketch, secondary circuit head and end root and electrical equipment are disconnected, are separately added into 1A
Current measure voltage, its cable single resistance value is determined, form record.
As equipment has potential safety hazard, sketch can be compareed and directly find trouble point, give and handle；, can be right in annual regular inspection
Keypoint part carries out hidden troubles removing in sketch, avoids or reduce the odds of its failure, so as to improve stabilization of equipment performance and
Availability.
Although describing the utility model according to the embodiment of limited quantity, above description, this technology are benefited from
It is in field it is clear for the skilled person that in the scope of the utility model thus described, it can be envisaged that other embodiments.In addition,
It should be noted that the language used in this specification primarily to readable and teaching purpose and select, rather than in order to
Explain or limit theme of the present utility model and select.Therefore, without departing from the scope and spirit of the appended claims
In the case of, many modifications and changes will be apparent from for those skilled in the art.For this
The scope of utility model, the disclosure done to the utility model are illustrative and not restrictive, the scope of the utility model
It is defined by the appended claims.
Claims (10)
1. the electric loop system for high altitude regions wind power plant, it is characterised in that described to be used for high altitude regions wind power plant
Electric loop system include 110kV units (1) and 35kV units (2)；The 110kV units (1) include 110kV overhead outlets
It is spaced subelement (11), #1 main transformer inlet wires interval subelement (12) and 110kV bus-bar potential transformers interval subelement (13)；Institute
Stating 35kV units (2) includes the first 35kV current collection line segregation subelements (21), the 2nd 35kV current collection line segregation subelements
(22), between reactive-load compensation SVG intervals subelement (23), change used and arc suppression coil interval subelement (24), #1 main transformer low-pressure sides
Every subelement (25) and 35kV bus-bar potential transformers interval subelement (26)；The 110kV overhead outlets interval subelement
(11) and the 110kV bus-bar potential transformers interval subelement (13) is respectively connecting to 110kV#1 buses；The #1 main transformers enter
One end of line interval subelement (12) is connected to the 110kV#1 buses, the other end is connected to the #1 main transformer low-pressure sides interval
One end of subelement (25), the other end of the #1 main transformer low-pressure sides interval subelement (25) is connected to 35kV#1 buses, described
First 35kV current collection line segregation subelements (21), the 2nd 35kV current collection line segregation subelements (22), the idle benefit
Repay SVG intervals subelement (23), the change used and arc suppression coil interval subelement (24) and the 35kV busbar voltages mutual inductance
Device interval subelement (26) is respectively connecting to the 35kV#1 buses.
2. the electric loop system according to claim 1 for high altitude regions wind power plant, it is characterised in that described
Polarity of current transformer in 110kV overhead outlets interval subelement (11) is as follows：The first end of the current transformer refers to
To 110kV bus bar sides, line scan pickup coil side is pointed at the second end, and direction of tide is that inflow bus is that reversely active, outflow bus is that forward direction has
Work(；
Current transformer electric current in the 110kV overhead outlets interval subelement (11) is as follows than configuring：Electric current ratio is 800/
5A or 400/5A, volume totally 5 of secondary winding, often rolls up totally 3 groups of taps；
In the case where wind energy turbine set installed capacity is 49.5MW, the electric current in the 110kV overhead outlets interval subelement (11)
The electric current of transformer is than selection 400/5A；
In the case where wind energy turbine set installed capacity is 9.9MW, the electric current in the 110kV overhead outlets interval subelement (11) is mutual
The electric current of sensor is than selection 800/5A；
In the case where total installation of generating capacity is 9.9MW, protected level electric current ratio selects 800/5A, class of accuracy 5P30；Observing and controlling electric current ratio
From 800/5A, class of accuracy 0.5S；Metering level electric current ratio selects 400/5A, class of accuracy 0.2S.
3. the electric loop system according to claim 1 for high altitude regions wind power plant, it is characterised in that the #1
Polarity of the 110kV bus bar side current transformers in main transformer inlet wire interval subelement (12) is as follows：First end points to 110kV
#1 main transformers side is pointed at bus bar side, the second end, and direction of tide is that inflow bus is that reversely active, outflow bus is that forward direction has
Work(；
The electric current of 110kV bus bar side current transformers in the #1 main transformers inlet wire interval subelement (12) is as follows than configuring：Electricity
It is 800/5A or 400/5A to flow ratio, volume totally 6 of secondary winding, often rolls up totally 3 groups of taps；
In the case where wind power plant total installation of generating capacity is 9.9MW：
Protect class of accuracy configuration as follows：#1 main transformers individual capacity is 50WMA, and protected level, electric current ratio select 400/5A, accurately
Level 5P30；
The configuration of observing and controlling class of accuracy is as follows：Observing and controlling electric current ratio selects 400/5A, class of accuracy 0.5S；
The configuration of accurate measurement level is as follows：Metering level electric current ratio selects 400/5A, class of accuracy 0.2S.
4. the electric loop system according to claim 1 for high altitude regions wind power plant, it is characterised in that the #1
Main transformer inlet wire interval subelement (12) includes main transformer body high voltage side current transformer, the main transformer body high voltage side current mutual inductance
Polarity of device is as follows：First end points to 110kV bus bar sides, and transformer body is pointed at the second end, and direction of tide is inflow bus
It is positive active for reversely active, outflow bus；Secondary side tap is just taken out；
The main transformer body high voltage side current transformer current is as follows than configuring：Electric current ratio is 800/5A or 400/5A, it is secondary around
Group A phases volume 3, B phases volume 4, C phases volume 3, L phases volume 2, from 400/5A, zero sequence current mutual inductor L electric currents ratio selects 100/5A.
5. the electric loop system according to claim 1 for high altitude regions wind power plant, it is characterised in that the #1
Main transformer low-pressure side interval subelement (25) includes #1 main transformer 35kV bus bar side current transformers, the #1 main transformers 35kV bus bar sides electricity
Polarity of current transformer is as follows：First end points to 35kV bus bar sides, and transformer side is pointed at the second end, and direction of tide is female to flow into
Line is that reversely active, outflow bus is positive active；Secondary side tap is just taken out；
The #1 main transformers 35kV bus bar side current transformer electric currents are as follows than configuring：
The #1 main transformers 35kV bus bar sides current transformer includes first group of current transformer of main transformer 35kV bus bar sides and main transformer
Second group of current transformer of 35kV bus bar sides, described first group of current transformer of main transformer 35kV bus bar sides and the main transformer 35kV are female
The electric current ratio of second group of current transformer of line side is 1200/5A, described first group of current transformer of main transformer 35kV bus bar sides and institute
Each group stated in second group of current transformer of main transformer 35kV bus bar sides respectively includes 3 roll coil windings, wherein per roll coil winding
Including 2 groups of taps.
6. the electric loop system according to claim 1 for high altitude regions wind power plant, it is characterised in that described
Polarity of current transformer in one 35kV current collection line segregation subelements (21) is as follows：First end points to 35kV bus bar sides,
Line side is pointed at second end, and direction of tide is that inflow bus is that reversely active, outflow bus is positive active；
The electric current of current transformer in the first 35kV current collection line segregation subelements (21) is as follows than configuring：
Current transformer in the first 35kV current collection line segregation subelements (21) includes the first 35kV current collection line segregations
First group of subelement part current transformer and the first second group of part of 35kV current collection line segregation subelements current transformer, institute
State the first 35kV current collection line segregation subelements first group of part current transformer and the first 35kV current collections line segregation
The electric current ratio of second group of current transformer of cell mesh is 800/5A or 100/5A, and the first 35kV current collections line segregation is single
First first group of current transformer in part includes 4 roll coil, described first 35kV current collection line segregation subelements part, second group of electricity
Current transformer includes 1 roll coil；Secondary tap is just to take out.
7. the electric loop system according to claim 1 for high altitude regions wind power plant, it is characterised in that described
Polarity of the current transformer in two 35kV current collection line segregation subelements (22) is as follows：First end points to 35kV buses
Line side is pointed at side, the second end, and direction of tide is that inflow bus is that reversely active, outflow bus is positive active；
The electric current of current transformer in the 2nd 35kV current collection line segregation subelements (22) is as follows than configuring：
Current transformer in the 2nd 35kV current collection line segregation subelements (22) includes the 2nd 35kV current collection line segregations
First group of subelement part current transformer and the 2nd second group of part of 35kV current collection line segregation subelements current transformer, institute
State the 2nd 35kV current collection line segregation subelements first group of part current transformer and the 2nd 35kV current collections line segregation
The electric current ratio of second group of current transformer of cell mesh is 800/5A or 100/5A, and the 2nd 35kV current collections line segregation is single
First first group of current transformer in part includes 4 roll coil, described 2nd 35kV current collection line segregation subelements part, second group of electricity
Current transformer includes 1 roll coil；Secondary tap is just to take out.
8. the electric loop system according to claim 1 for high altitude regions wind power plant, it is characterised in that the institute
A polarity with the current transformer in change and arc suppression coil interval subelement (24) is as follows：First end points to 35kV buses
Transformer side is pointed at side, the second end, and direction of tide is that inflow bus is that reversely active, outflow bus is positive active；
The electric current of the change used and the current transformer in arc suppression coil interval subelement (24) is as follows than configuring：
Current transformer in the change used and arc suppression coil interval subelement (24) includes change used and arc suppression coil interval
First group of subelement part current transformer, change used and second group of current transformer of arc suppression coil introns cell mesh and institute
With change and the 3rd group of current transformer of arc suppression coil introns cell mesh, the change used and arc suppression coil interval subelement portion
Point first group of current transformer, described used become and second group of current transformer of arc suppression coil introns cell mesh and described
Become the electric current ratio of the 3rd group of part current transformer used in No. 35kV1 as 800/5A or 100/5A, the change used and arc blowout wire
Circle first group of current transformer of introns cell mesh includes 2 roll coil, the change used and arc suppression coil interval subelement portion
Second group of current transformer is divided to include 3 roll coil, becoming the 3rd group of part current transformer used in described No. 35kV1 includes 1 spiral
Circle；Secondary tap is just to take out.
9. the electric loop system according to claim 1 for high altitude regions wind power plant, it is characterised in that the nothing
Polarity of the current transformer in work(compensation SVG interval subelements (23) is as follows：First end sensing 35kV bus bar sides, second
Transformer side is pointed at end, and direction of tide is that inflow bus is that reversely active, outflow bus is positive active；
The electric current of current transformer in the reactive-load compensation SVG intervals subelement (23) is as follows than configuring：
Current transformer in the reactive-load compensation SVG intervals subelement (23) includes reactive-load compensation SVG introns cell mesh
First group of current transformer and reactive-load compensation SVG introns second group of current transformer of cell mesh, between the reactive-load compensation SVG
Every first group of subelement part current transformer and described second group of current transformer of reactive-load compensation SVG introns cell mesh
Electric current ratio is 800/5A or 400/5A or 100/5A, described first group of current transformer of reactive-load compensation SVG introns cell mesh
Including 1 roll coil, described second group of current transformer of reactive-load compensation SVG introns cell mesh includes 4 roll coil；Secondary tap
It is just to take out.
10. the electric loop system according to claim 1 for high altitude regions wind power plant, it is characterised in that described
110kV units (1) include the voltage transformer of 110kV bus-bar potential transformers interval subelement (13) part, and the 110kV is female
Voltage transformer in line voltage transformer interval subelement (13) part is arranged in parallel on 110kV buses：The mutual induction of voltage
The first end of device points to 110kV bus bar sides, and line scan pickup coil side is pointed at the second end, and direction of tide is that inflow bus is reversely active, outflow
Bus is positive active；
Voltage transformer voltage ratio configuration in the 110kV bus-bar potential transformers introns cell mesh is as follows：Voltage ratio
For：110/0.1, volume totally 4 of secondary winding often rolls up totally 3 groups of taps, and secondary tap is just to take out；
1S volumes of class of accuracy of the first volume is 0.2, for measuring；2S volumes of class of accuracy of volume Two is 0.5, for observing and controlling；3S volumes of volume three
Class of accuracy is 3P, for protecting；4S volumes of class of accuracy 3P of Volume Four, for protecting；
The 110kV units (1) include the voltage transformer of 110kV overhead outlets interval subelement (11) part, the 110kV
Voltage transformer in overhead outlet interval subelement (11) part is arranged in parallel on the 110kV circuits：The voltage transformer
First end point to 110kV bus bar sides, line scan pickup coil side is pointed at the second end, and direction of tide is that to flow into bus be that reversely active, outflow is female
Line is positive active；
Voltage transformer voltage ratio configuration in 110kV overhead outlets interval subelement (11) part is as follows：Voltage ratio is：
110/0.1, volume totally 1 of secondary winding often rolls up totally 3 groups of taps, and secondary tap is just to take out；
Monovolume class of accuracy 3P, individual event voltage A609 are used for protection device, for compare 110kV bus individual events voltage magnitude, pressure difference,
Angular difference and frequency difference；
The 35kV units (2) include the voltage transformer of 35kV bus-bar potential transformers interval subelement (26) part, described
35kV bus-bar potential transformers interval subelement (26) portion voltage transformer is arranged in parallel on the 35kV buses：The voltage is mutual
The first end of sensor points to 110kV bus bar sides, and line scan pickup coil side is pointed at the second end, and direction of tide is that inflow bus is reverse active, stream
It is active for forward direction to go out bus；
Voltage transformer voltage ratio configuration in the 35kV bus-bar potential transformers introns cell mesh is as follows：Voltage ratio is
35/0.1, volume totally 3 of secondary winding often rolls up totally 3 groups of taps, and secondary tap is just to take out；
1S volumes of class of accuracy of the first volume is 0.2, for observing and controlling and metering；2S volumes of class of accuracy of volume Two is 3P, for protecting；Volume three
3S volumes of class of accuracy is 3P, for protecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110912149A (en) * | 2018-09-17 | 2020-03-24 | 株洲变流技术国家工程研究中心有限公司 | High-altitude reactive power compensation method and device based on static var generator |
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| CN110912149A (en) * | 2018-09-17 | 2020-03-24 | 株洲变流技术国家工程研究中心有限公司 | High-altitude reactive power compensation method and device based on static var generator |
| CN110912149B (en) * | 2018-09-17 | 2023-05-26 | 株洲变流技术国家工程研究中心有限公司 | High-altitude reactive power compensation method and device based on static reactive power generator |
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