CN101145675B - Apparatus for pt/ct detection of roadside setting transformer device - Google Patents
Apparatus for pt/ct detection of roadside setting transformer device Download PDFInfo
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- CN101145675B CN101145675B CN2007101427733A CN200710142773A CN101145675B CN 101145675 B CN101145675 B CN 101145675B CN 2007101427733 A CN2007101427733 A CN 2007101427733A CN 200710142773 A CN200710142773 A CN 200710142773A CN 101145675 B CN101145675 B CN 101145675B
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Abstract
The present invention provides a PT/CT examining apparatus of a wayside setting type transformer device, which is capable of greatly simplifying the preliminary operation and the ending activity when PT and CT is examined. The PT/CT examining apparatus of a wayside setting type transformer device is provided with a fuse holder (15) consisting of a fuse receiving body (15a) for receiving power fuses (12) and a fuse holding body (15b), PT (18) and CT (19) used for measuring electrical energy at the junior side of an electric power transformer (13). The examination of PT and CT of the wayside setting type transformer device set in the dielectric oil (13b) filled in the transformer is executed in the state that the fuse holding body is drawn from the fuse receiving body. The PT/CT examining apparatus is formed at one end of a conductive clubbed element (1a) to from an electrode connecting part (1b) in a sliding contact way with a fixed electrode (15b2) at the load side. In order to apply an examination electric voltage, a voltage applying part (1c) is formed at the other end and can be freely demounted and mounted in the fuse receiving body.
Description
Technical field
The present invention relates to, power fuse that possesses three-phase breaker, constitutes by three-phase and the electric power transformer of having filled insulating oil, and be housed in the outer container, take in the fuse clamping device (holder) of power fuse (fuse), install with the state of the transformer housing of transformer to connect electric power, the PT/CT of road equipped type transformer device that is provided for measuring PC, the CT of electric energy in insulating oil checks and uses utensil.
Background technology
Road equipped type transformer device, shown in patent documentation 1, the switching device that generally possesses power fuse that transformer, three-phase constitute and constitute by three-phase etc., be housed in the outer container, switching device and power fuse are connected to the primary side (high-pressure side) of electric power with transformer successively from mains side.
Electric power power of transformer side usually, is avoided the influence of the short circuit current of generations such as overload electric current and load-side short circuit accident in order to protect transformer, and is being connected power fuse.This power fuse is placed, remains on the electric power installed down with the state on the top, side that connects the transformer housing with on the fuse clamping device.
On the other hand, the electric energy meter is set sometimes in road equipped type transformer device.And, measure electric energy at electric power with transformer primary sometimes.The measurement of this electric energy is applied to aforesaid road equipped type transformer device road equipped type transformer device the summary pie graph as shown in Figure 3, in addition, the circuit diagram of this road equipped type transformer device is as shown in Figure 4.And each figure only represents a phase.
As shown in the figure, possesses three-phase breaker 11, power fuse 12 and electric power transformer 13, and in the outer container 14 of packing into, the mode that electric power is packed in the transformer housing 13a with the transformer body of not representing in scheming with transformer 13 constitutes, the mode that three-phase breaker 11 is packed in the Shell of circuit breaker 11a with the breaker body that does not have expression in scheming constitutes, and Shell of circuit breaker 11a is installed in the side of transformer housing 13a.The filling mineral wet goods is as insulating oil 13b in transformer housing 13a, encloses SF6 gas etc. as insulating gas in Shell of circuit breaker 11a.Mains side sleeve pipe (bushing, Block Star シ Application グ) 11b and load-side sleeve pipe 11c are arranged on three-phase breaker 11.
Power fuse is controlled main body 15b, by the connection of insulating properties (
Hand) member 15b1, electrode holder member 15b2, movable lateral electrode 15b3 and lid member 15b4 constitute, end at the long side direction of connecting elements 15b1, installation is with the state of power fuse 12 towards its long side direction, control the electrode holder member 15b2 that the mode of the mains side electrode 12a of power fuse 12 forms by screw, in addition, be used to seal the lid member 15b4 that power fuse is taken in the peristome of main body 15a in its other end installation.Electrode holder member 15b2, with the mains side electrode 12a conducting of power fuse 12, and the toroid round mains side movable electrode 15b3 in week forms in the mode that is wrapped in periphery in the sliding contact mains side fixed electrode 15a2.
The lead-in cable 17 of Belt connector is connected on the mains side sleeve pipe 11b of three-phase breaker 11, the load-side sleeve pipe 11c of three-phase breaker 11 is connected with mains side fixed electrode 15a2, and load-side fixed electrode 15a3 is connected with the primary side coil 13c of electric power with transformer 13.Among the insulating oil 13b that in transformer housing 13a, fills, be provided for measuring voltage transformer (hereinafter referred to as PT) 18 summation current transformers (hereinafter referred to as CT) 19 of electric energy, and, PT18 connects in the mode of output power with the both end voltage of the primary side coil 13c of transformer 13, and CT19 is provided with in the mode of output power with the primary side current of transformer 13.
Because PT18 and each output of CT19 are drawn out to the outside, as shown in Figure 4, PT and CT are set on the transformer housing 13a with connecting terminal 20,21, and electric energy meter 22 is connected on this perforation terminal.
PT18 and CT19, if electric power is higher with the primary side voltage of transformer 13, will improve PT, CT's is withstand voltage, if and PT, CT works in air, and it is big that size becomes, and can not adapt to the requirement of miniaturization, make PT, CT works in oil, realizes miniaturization, is arranged among the insulating oil 13b that fills in the transformer housing 13a.
If PT18 and CT19 are arranged in the oil of transformer housing 13a, because PT, CT might break down, and therefore regularly checks sometimes.
When checking, the circuit breaker of the upper system of road equipped type transformer device is become the state of " disconnection ", stop after the electric power of road equipped type transformer device is supplied with, the lead-in cable 17 of dismounting Belt connector, and be connected to electric power with on the transformer 13 primary side sleeve pipes, unload not shown cable,, confirm whether the primary side of PT18 exports the voltage of corresponding PT transformation ratio from the inspection voltage that the mains side sleeve pipe 11b of three-phase breaker 11 applies regulation.In addition, confirm whether the electric current of this moment can export the electric current of corresponding CT current transformation ratio in the primary side of CT19.
Patent documentation 1: the spy opens flat 9-282985 communique (Fig. 1).
Summary of the invention
; in inspection in the past; owing to need be connected the loading and unloading that are connected the cable on the primary side sleeve pipe of the lead-in cable 17 of the Belt connector on the mains side sleeve pipe 11b of three-phase breaker 11 and electric power, so has the preparation of inspection and power cut-off numerous and diverse such problem that becomes with transformer 13.In addition, because power fuse 12 is connected on the check circuit, therefore comprise the resistance of power fuse, exist in the secondary output of PT18 and comprise the problem that measure error is such, in addition, have in the secondary output of the CT19 that electric current produced at this moment and comprise the problem that measure error is such.
The objective of the invention is to, provide the PT/CT of the road equipped type transformer device that the preparation that makes when checking PT and CT and power cut-off simplify significantly to check and use utensil.
The 1st invention checks with utensil to be object with the PT/CT of road equipped type transformer device, the PT/CT of road equipped type transformer device checks to possess three-phase breaker with utensil, power fuse of three-phase part and the electric power transformer that is filled with insulating oil, and be housed in the outer container, three-phase breaker and power fuse are connected to the primary side of electric power with transformer successively from mains side, taking in main body and fuse by the fuse of taking in power fuse controls the fuse of the fuse clamping device that main body constitutes and takes in main body, install with the state in the transformer housing of transformer to connect electric power, to answer and the mode of difference sliding contact with the mains side electrode and the load-side electrode pair of power fuse, take in main body at fuse mains side fixed electrode and load-side fixed electrode are set, fuse is controlled main body, mode with the mains side electrode of controlling power fuse forms, and can take in freely to take out in the main body at fuse with putting into and install, the lead-in cable of Belt connector is connected the mains side sleeve pipe of circuit breaker, the load-side sleeve pipe of circuit breaker be arranged on fuse and take in the mains side fixed electrode of main body and be connected, the load-side fixed electrode is connected with the primary side (high-pressure side) of electric power with transformer, the voltage transformer that is used for measuring electric energy is that the PT summation current transformer is that CT is arranged on insulating oil, and, voltage transformer connects in the mode of reflection electric power with the primary side voltage of transformer, current transformer, be provided with in the mode of reflection electric power with the primary side electric current of transformer, in order to make the inspection of voltage transformer summation current transformer, extract fuse the main body and control under the state of main body and carry out taking in from fuse, the PT/CT of above-mentioned road equipped type transformer device checks with utensil in the following manner, promptly the rod member by conductivity constitutes, be formed on an end of rod member, form electrode connecting portion in mode with the sliding contact of load-side fixed electrode, form voltage application portion at the other end in order to apply inspection voltage, and taking in main body at fuse can free installing/dismounting, above-mentioned PT/CT is checked that filling in above-mentioned fuse with utensil takes in the main body, make above-mentioned electrode connecting portion be in the state that embeds above-mentioned load-side fixed electrode fully, under this state, apply the inspection voltage of regulation by above-mentioned voltage application portion, with above-mentioned voltage transformer is whether PT links to each other with potentiometer and fetch mensuration and exported and the corresponding voltage of the transformation ratio of PT in the primary side of PT, is that CT links to each other with galvanometer and whether fetches mensuration at the primary side output of CT and the corresponding electric current of current transformation ratio of CT with above-mentioned current transformer.。
The 2nd invention, be except the 1st invention, between electrode connecting portion and voltage application portion, supporting member is set in the mode that connects rod member, to be embedded under the state in the load-side fixed electrode, supporting member is taken in the invention that the mode of the peristome of main body forms to be supported on fuse in electrode connecting portion.
The 3rd invention is except the 1st or the 2nd invention, is provided with to carry out load-side fixed electrode and electric power with the auxiliary invention with three-phase breaker of the inspection of the switching between the primary side of transformer from the transformer shell external body.
As mentioned above, by the 1st invention, when checking PT and CT,, can simplify the preparation and the power cut-off of inspection significantly owing to do not need to load and unload the lead-in cable of Belt connector.In addition,, apply inspection voltage with transformer primary, therefore can measure the primary side output of PT and CT accurately by electric power owing to needn't relate to the power fuse resistance.
By the 2nd invention, when PT/CT being checked being installed in fuse with utensil takes among the main body 15a,, therefore can stably carry out inspection work because rod member is fixed.
By the 3rd invention,, can further simplify the preparation and the power cut-off of inspection significantly owing to when checking PT and CT, do not need installing/dismounting to be connected electric power with the cable on the sleeve pipe of transformer secondary.
Description of drawings:
Fig. 1 is that the PT/CT of expression the present invention road equipped type transformer device of being correlated with checks the summary pie graph with an execution mode of utensil.
Fig. 2 is that the PT/CT of expression road equipped type transformer device that the present invention is correlated with checks with the figure of appliance applications to the state of road equipped type transformer device.
Fig. 3 is the summary pie graph for the road equipped type transformer device in the past that carries out electric energy measurement.
Fig. 4 is the circuit diagram of road equipped type transformer device shown in Figure 3.
Fig. 5 (A) is that expression formation electric power is taken in the sectional arrangement drawing of main body with the fuse of fuse clamping device, (B) is that expression constitutes electric power is controlled main body with the power fuse of fuse clamping device side view.
Among the figure: 1a-rod member, 1b-electrode connecting portion, 1c-voltage application portion, the 1e-supporting member, 11-three-phase breaker, 12-power fuse, 13-electric power transformer, 14-outer container, 22-Shell of circuit breaker, the 11-three-phase breaker, 11b-mains side sleeve pipe, 11C-load-side sleeve pipe, the 12-power fuse, 12a-mains side electrode, 12b-load-side electrode, 13-electric power transformer, 13a-transformer housing, the 13b-insulating oil, 14-outer container, 15-fuse clamping device, the 15a-fuse is controlled main body, 15a2-mains side fixed electrode, 15b2-load-side fixed electrode, the 15b-fuse is controlled main body, the lead-in cable of 17-Belt connector, 18-voltage transformer (PT), 19-current transformer (CT), 23-are checked the auxiliary three-phase breaker of using
Embodiment
Fig. 1 is that the PT/CT of expression the present invention road equipped type transformer device of being correlated with checks the summary pie graph with an execution mode of utensil, and the PT/CT of Fig. 2 road equipped type transformer device that to be expression be correlated with the present invention checks with appliance applications in the figure of the state of road equipped type transformer device.PT/CT inspection utensil 1, as shown in Figure 1, by conductivity rod member 1a; Conductive electrode connecting portion 1b in the formation of rod member 1a one end; At its other end in order to apply the voltage application portion 1c that checks voltage and form; Tubular insulating component 1d for the setting of the rod member 1a between coated electrode connecting portion 1b and the voltage application portion 1c; Connect rod member 1a, for example discoid supporting member 1e that is arranged between electrode connecting portion 1b and the voltage application portion 1c constitutes.
Electrode connecting portion 1b suitably is installed on the rod member 1a, form the identical shape of load-side electrode 12b with power fuse 12, voltage application portion 1c forms the screw terminal shape, supporting member 1e, embed the state of load-side fixed electrode 12b fully with electrode connecting portion 1b, be fixed on that fuse is taken in main body 15a peristome and supported mode forms.Insulating component 1d is made of organic materials such as FRP, and supporting member 1e is made of organic materials such as EPDM.
When checking PT18 and CT19, make the upper system circuit breaker of road equipped type transformer device be in " disconnection " state, stop to supply with to the electric power of road equipped type transformer device, perhaps, after making three-phase breaker 11 become " disconnection " state, as shown in Figure 2, take in the load-side fixed electrode 15a3 of main body 15a and the mode that electric power is used the switching between the primary side of transformer 13 can carry out fuse from the outside of transformer housing 13a, the inspection that is arranged in the transformer housing 13a is assisted become " disconnection " state with three-phase breaker 23, fuse is controlled main body 15b to be taken in the main body 15a from fuse and extracts, PT/CT is checked that filling in fuse with utensil 1 takes among the main body 15a, makes electrode connecting portion 1b be in the state that embeds load-side fixed electrode 15a3 fully.Under this state, apply the inspection voltage of regulation by voltage application portion 1c, unload electric energy meter 22 from connecting terminal 20,21, potentiometer is connected connects on the terminal 20, measure the voltage of whether exporting corresponding PT transformation ratio in the primary side of PT18.In addition, unload electric energy meter 22, galvanometer is connected to connect is determined at the CT19 primary side on the terminal 21 whether to export the electric current of this moment be the electric current corresponding with the current transformation ratio of CT from connecting terminal 20,21.
Like this, when checking PT18 and CT19, needn't remove and install the lead-in cable 17 and the cable that is connected on the electric power usefulness primary side sleeve pipe of transformer 13 of Belt connector, in addition, the resistance that can not relate to power fuse, and can apply inspection voltage with the primary side of transformer 13 from electric power.And, can stably carry out inspection work.
In the above-described embodiment, PT18 and CT19 branch are opened formation, also can be incorporate PCT.In addition, rod member 1a is covered by the insulating component 1d that forms tubular, but also can be by the integrated covering of resin material insulating component.And insulating component 1d can not have according to transformer primary voltage yet, perhaps, can change its wall thickness yet.In addition, electrode connecting portion 1b forms the identical shape of load-side electrode 12b with power fuse 12, but is not limited thereto.
Claims (3)
1. the PT/CT of a road equipped type transformer device checks and uses utensil,
Above-mentioned road equipped type transformer device possesses three-phase breaker, three-phase part power fuse and is filled with the electric power transformer of insulating oil, and is housed in the outer container,
Above-mentioned three-phase breaker and power fuse are connected to the primary side of above-mentioned electric power with transformer successively from mains side,
Take in main body and fuse by the fuse of taking in above-mentioned power fuse and control the above-mentioned fuse of the fuse clamping device that main body constitutes and take in main body, install with the state in the transformer housing of transformer to connect above-mentioned electric power,
To answer and the mode of difference sliding contact with the mains side electrode and the load-side electrode pair of above-mentioned power fuse, take in main body at above-mentioned fuse mains side fixed electrode and load-side fixed electrode are set,
Above-mentioned fuse is controlled main body, and form in the mode of the mains side electrode of controlling above-mentioned power fuse, and can take in freely to take out in the main body at above-mentioned fuse with putting into and install,
The lead-in cable of Belt connector is connected the mains side sleeve pipe of above-mentioned circuit breaker,
The load-side sleeve pipe of above-mentioned circuit breaker is taken in the mains side fixed electrode of main body and is connected with being arranged on above-mentioned fuse,
Above-mentioned load-side fixed electrode and above-mentioned electric power are that the high-pressure side is connected with the primary side of transformer,
The voltage transformer that is used for measuring electric energy is that the PT summation current transformer is that CT is arranged on above-mentioned insulating oil, and above-mentioned voltage transformer connects with the mode of the primary side voltage of transformer to reflect above-mentioned electric power,
Above-mentioned current transformer is provided with the mode of the primary side electric current of transformer to reflect above-mentioned electric power,
In order to make the inspection of above-mentioned voltage transformer summation current transformer; Extract above-mentioned fuse the main body and control under the state of main body and carry out taking in from above-mentioned fuse; The PT/CT of above-mentioned road equipped type transformer device checks and forms in the following manner with utensil; Namely the rod member by electric conductivity consists of; Be formed on an end of above-mentioned rod member; Form electrode connecting portion in the mode with the sliding-contact of above-mentioned load-side fixed electrode; Form voltage application portion at the other end in order to apply inspection voltage; And taking in main body at above-mentioned fuse can free installing/dismounting
Above-mentioned PT/CT is checked that filling in above-mentioned fuse with utensil takes in the main body, make above-mentioned electrode connecting portion be in the state that embeds above-mentioned load-side fixed electrode fully, under this state, apply the inspection voltage of regulation by above-mentioned voltage application portion, with above-mentioned voltage transformer is whether PT links to each other with potentiometer and fetch mensuration and exported and the corresponding voltage of the transformation ratio of PT in the primary side of PT, is that CT links to each other with galvanometer and whether fetches mensuration at the primary side output of CT and the corresponding electric current of current transformation ratio of CT with above-mentioned current transformer.
2. the PT/CT of road equipped type transformer device according to claim 1 checks and uses utensil, it is characterized in that,
Between above-mentioned electrode connecting portion and above-mentioned voltage application portion, supporting member is set in the mode that connects above-mentioned rod member,
Above-mentioned supporting member under above-mentioned electrode connecting portion is embedded into state in the above-mentioned load-side fixed electrode, is taken in the mode of body openings portion and is formed to be supported on above-mentioned fuse.
3. the PT/CT of road equipped type transformer device according to claim 1 and 2 checks and uses utensil, it is characterized in that,
Be provided with and carry out above-mentioned load-side fixed electrode and above-mentioned electric power with the auxiliary three-phase breaker of using of the inspection of the switching between the primary side of transformer from above-mentioned transformer shell external body.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-235056 | 2006-08-31 | ||
| JP2006235056 | 2006-08-31 | ||
| JP2006235056A JP2008058140A (en) | 2006-08-31 | 2006-08-31 | Tool for inspecting pt and ct of transformer installed on road |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101145675A CN101145675A (en) | 2008-03-19 |
| CN101145675B true CN101145675B (en) | 2011-07-20 |
Family
ID=39208029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101427733A Expired - Fee Related CN101145675B (en) | 2006-08-31 | 2007-08-23 | Apparatus for pt/ct detection of roadside setting transformer device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008058140A (en) |
| CN (1) | CN101145675B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4965383B2 (en) * | 2007-08-10 | 2012-07-04 | 株式会社ダイヘン | Road-mounted transformer device |
| CN107147027B (en) * | 2017-06-15 | 2019-06-04 | 国网山东省电力公司烟台供电公司 | A kind of drop type fuse operating device |
| CN107069509B (en) * | 2017-06-15 | 2019-06-07 | 国网山东省电力公司烟台供电公司 | A kind of drop type fuse operating device and work body |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5596467A (en) * | 1993-04-05 | 1997-01-21 | Yamamoto; Makoto | Electrical energy-transforming equipment |
| CN2674729Y (en) * | 2003-09-22 | 2005-01-26 | 杭州电器开关有限公司 | Intelligent preassemblied transformer substation |
-
2006
- 2006-08-31 JP JP2006235056A patent/JP2008058140A/en active Pending
-
2007
- 2007-08-23 CN CN2007101427733A patent/CN101145675B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5596467A (en) * | 1993-04-05 | 1997-01-21 | Yamamoto; Makoto | Electrical energy-transforming equipment |
| CN2674729Y (en) * | 2003-09-22 | 2005-01-26 | 杭州电器开关有限公司 | Intelligent preassemblied transformer substation |
Non-Patent Citations (1)
| Title |
|---|
| JP平7-39025A 1995.02.07 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101145675A (en) | 2008-03-19 |
| JP2008058140A (en) | 2008-03-13 |
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Granted publication date: 20110720 Termination date: 20120823 |