CN204009048U - Intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor - Google Patents
Intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor Download PDFInfo
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- CN204009048U CN204009048U CN201420314294.0U CN201420314294U CN204009048U CN 204009048 U CN204009048 U CN 204009048U CN 201420314294 U CN201420314294 U CN 201420314294U CN 204009048 U CN204009048 U CN 204009048U
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Abstract
The utility model relates to a kind of intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor, its interval measurement mechanism (4) connects the secondary circuit of conventional current mutual inductor (3), conventional voltage mutual inductor (1) by merge cells (2), thereby conventional current mutual inductor (3) secondary side that obtains this string branch road flows into the electric current of merge cells (2), and the voltage of conventional voltage mutual inductor (1) secondary side access merge cells (2), and data are passed to and measured head station (5) by WLAN interface.Finally, by head station display panel (9), the data that the MMS net of the data He Cong transformer station that WLAN interface is sent obtains contrast.This instrument only needs 1 to 2 people operation, the most important thing is can be conveniently to the wattless power measurement situation of the bus measure and control device arranging in protection cell check, verification, and guarantee the net synchronization capability of the measurement of each branch road of bus.The verification field that can be used for the intelligent station based on traditional mutual inductor.
Description
Technical field
The utility model relates to a kind of bus reactive power tester, relates in particular to a kind of tester of the intelligent substation 3/2 wiring bus reactive power based on traditional mutual inductor.
Background technology
Front power network development is after current this stage, and the state estimation work of electrical network is a very meaningful and very important job.In current electrical network super extra-high voltage intelligent substation 330kV, 500kV part or 1000kV part in, widespread use be 3/2 main wiring mode.Because traditional mutual inductor has plurality of advantages, thereby be widely used, even in intelligent substation, do not use novel IED (intelligent power equipment) electronic mutual inductor, but use traditional mutual inductor.
This mode of connection connects the secondary side of mutual inductor the merge cells of the Intelligent control cabinet that is arranged in switch yard, and then by merge cells, current signal is become to digital optical signal, is sent to measure and control device in protection cell and other secondary device.Because the area of super extra-high voltage intelligent substation is very large, only in the floor area of 330kV and above part, Intelligent control cabinet far away has generally all surpassed 100 meters to the distance of protection cell.
The secondary device of intelligent substation is comprised of three layer of two net, refers to three-layer equipment two-tier network, if two host's process-level networks, station level network.Process-level network is comprised of GOOSE net (transmission switching value) and SV net (solve networking and transmit analog quantity).What station level mainly adopted is that intelligent substation 61850MMS manufactures messaging system, is the communication basis of the intelligent substation based on IEC-22850 agreement.MMS is a kind of application layer protocol.Realized between the equipment that comes from different manufacturers and there is interoperability, made the system integration become simply, facilitate.At present, it is of wide application.
In dispatching of power netwoks and operational management process, need to carry out site inspection to the measurement performance of on-the-spot measurement and control instrument.Current, when the part of 3/2 bus is carried out to DATA REASONING, there is the method for several measurements.First method is: use traditional surveying instrument to need a string branch road to follow the measurement of a string branch road, measure whole piece bus and respectively go here and there the duration of branch road and approximately need 15 minutes to 16 minutes.After measurement is over, according to the result of measuring, calculate.In this process, because the trend situation on electrical network changes, cause that the result measured is very inaccurate even cannot use these data.Second method, is used every string branch road all to arrange one to two full-time staff, and every string branch road is equipped with a measurement instrument, and contacts in time by talk back equipment, to guarantee respectively to go here and there the simultaneity of branch road measurement data.Adopt second method, needed manpower is many, and the bus of 10 string branch roads of take is example, needs 10～8 people, simultaneously record data.Even so, still can not guarantee the simultaneity of metric data.
Utility model content
(1) technical matters that will solve
The technical problems to be solved in the utility model is exactly how to provide a kind of based on traditional transformer intelligent transformer station 3/2 wiring bus reactive power tester; the reactive power equilibrium of the bus measure and control device conveniently protection being arranged in cell is measured the checking of situation, verification, and guarantees the simultaneity of metric data.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor, it is characterized in that, comprises an above interval measurement device;
Described interval measurement device connects electric current card stream pincers and pressure-wire, connects the secondary circuit of conventional current mutual inductor, conventional voltage mutual inductor by the merge cells in Intelligent control cabinet in transformer station;
Described interval measurement device is comprised of a set of modular equipment in a complete shell of being arranged on, comprise a CPU module, at outer the first chargeable electrical storage device, the first power knob switch, the first clock module, first watchdog module of being arranged with of a CPU module, for connecting the voltage measurement AD module of three-phase voltage measuring circuit, for connecting current measurement AD module, a WLAN adaptation module, gps satellite synchronous interface module, the first memory module, the indicating lamp module of three-phase current measuring circuit;
Described voltage measurement AD module has voltage measurement circuit Ua, Ub, Uc, Un;
Described current measurement AD module has jaw type current measurement circuit Ia, Ib, Ic, In;
Interval measurement device, by the first outer A phase secondary side wiring outside that is stuck in conventional current mutual inductor of electric current card stream pincers, measures the current value of input jaw type current measurement circuit Ia, thereby obtains the electric current that secondary side A flows into merge cells mutually; By the second outer B phase secondary side wiring outside that is stuck in conventional current mutual inductor of electric current card stream pincers, measure the current value of input jaw type current measurement circuit Ib, thereby obtain the electric current that secondary side B flows into merge cells mutually; By the 3rd outer C phase secondary side wiring outside that is stuck in conventional current mutual inductor of electric current card stream pincers, measure the current value of input jaw type current measurement circuit Ic, thereby obtain the electric current that secondary side C flows into merge cells mutually; By the outer secondary side neutral line wiring outside that is stuck in conventional current mutual inductor of neutral current card stream pincers, measure the current value of input jaw type current measurement circuit In, thereby obtain the electric current that the secondary side neutral line flows into merge cells;
Interval measurement device is directly connected to by the first pressure-wire in the A phase secondary side wiring of conventional voltage mutual inductor, for the voltage of measuring voltage measuring circuit Ua, thereby obtains the voltage that secondary side A accesses merge cells mutually; By second voltage line, be directly connected in the B phase secondary side wiring of conventional voltage mutual inductor, for the voltage of measuring voltage measuring circuit Ub, thereby obtain the voltage that secondary side B accesses merge cells mutually; By tertiary voltage line, be directly connected in the C phase secondary side wiring of conventional voltage mutual inductor, for the voltage of measuring voltage measuring circuit Uc, thereby obtain the voltage that secondary side C accesses merge cells mutually; By neutral line pressure-wire, be directly connected in the neutral line secondary side wiring of conventional voltage mutual inductor, for the voltage of measuring voltage measuring circuit Un, thereby obtain the voltage that the secondary side neutral line accesses merge cells;
Interval measurement device obtains lock in time by the gps satellite sync cap on gps satellite synchronous interface module, by the WLAN (wireless local area network) WLAN interface in a WLAN adaptation module, to the measurement head station that head station WLAN interface is housed, sends time and the electric parameter that interval measurement measurement device arrives;
Described measurement head station is comprised of a set of modular equipment in a complete shell of being arranged on, comprise the 2nd CPU module, outer the second chargeable electrical storage device, second source pushbutton switch, second clock module, the second watchdog module, the 2nd WLAN adaptation module, the second memory module, the MMS Ethernet adaptation module of being arranged with of described the 2nd CPU module;
Measure the data that head station is sent from interval measurement device warp LAN (Local Area Network) WLAN interface by the WLAN interface reception of head station the 2nd WLAN adaptation module.
Preferably, described traditional transformer intelligent transformer station 3/2 wiring bus tester comprises that four interstations are every measurement mechanism.
(3) beneficial effect
A kind of intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor of the present utility model, comprise an above interval measurement device, described interval measurement device connects electric current card stream pincers and pressure-wire, by the merge cells in Intelligent control cabinet in transformer station, connect conventional current mutual inductor, the secondary circuit of conventional voltage mutual inductor, thereby obtain the conventional current mutual inductor secondary side A phase of this string branch road, B phase, the electric current of the inflow merge cells of C phase and the neutral line, and conventional voltage mutual inductor secondary side A phase, B phase, the voltage of C phase and neutral line access merge cells, and the data that record are passed to measurement head station by WLAN interface.Finally, by measuring the head station display panel of head station, the data that the MMS net of the data He Cong transformer station that WLAN interface is sent gets contrast.This instrument only needs 1 to 2 people operation, the most important thing is can be conveniently to the wattless power measurement situation of the bus measure and control device arranging in protection cell check, verification, and guarantee the net synchronization capability of the measurement of each branch road of bus.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1: a kind of allocation plan schematic diagram under a kind of intelligent substation 3/2 mode of connection based on traditional mutual inductor that the utility model provides;
Fig. 2: the interval measurement device that the utility model provides and the structure connection diagram between merge cells;
Fig. 3: the external structure schematic diagram of measurement head station of the present utility model;
Fig. 4: the inner structure schematic diagram of a kind of interval measurement device that the utility model provides;
Fig. 5: a kind of inner structure schematic diagram of measuring head station that the utility model provides;
In figure: 1, conventional voltage mutual inductor; 2, merge cells; 3, conventional current mutual inductor; 4, interval measurement device; 5, measure head station; 6, gps satellite sync cap; 7, WLAN (wireless local area network) WLAN interface; 8, head station WLAN interface; 9, head station display panel; 10, neutral current card stream pincers; 11, the first electric current card stream pincers; 12, the second electric current card stream pincers; 13, the 3rd electric current card stream pincers; 14, the first pressure-wire; 15, second voltage line; 16, tertiary voltage line; 17, neutral line pressure-wire; 18, protection cell device measure and control device; 19, MMS interface; 20, a CPU module; 21, the first chargeable electrical storage device; 22, the first power knob switch; 23, the first clock module; 24, the first watchdog module; 25, voltage measurement AD module; 26, current measurement AD module; 27, a WLAN adaptation module; 28, gps satellite synchronous interface module; 29, the first memory module; 30, indicating lamp module; 31, the 2nd CPU module; 32, the second chargeable electrical storage device; 33, second source pushbutton switch; 34, second clock module; 35, the second watchdog module; 36, the 2nd WLAN adaptation module; 37, the second memory module; 38, MMS Ethernet adaptation module.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but can not be used for limiting scope of the present utility model.
As shown in Figure 1, a kind of allocation plan schematic diagram under 3/2 mode of connection of the intelligent substation based on traditional mutual inductor that the present embodiment provides; Wherein the structure annexation between interval measurement device and merge cells as shown in Figure 2, is measured the external structure schematic diagram of head station 5 as shown in Figure 3.
Interval measurement device 4 connects electric current card stream pincers and pressure-wire, connects the secondary circuit of conventional current mutual inductor 3, conventional voltage mutual inductor 1 by the merge cells 2 in Intelligent control cabinet in transformer station;
As shown in Figure 4, described interval measurement device 4 is comprised of a set of modular equipment in a complete shell of being arranged on, comprise a CPU module 20, the outer first chargeable electrical storage device 21 that is arranged with in a CPU module 20, the first power knob switch 22, the first clock module 23, the first watchdog module 24, for connecting the voltage measurement AD module 25 of three-phase voltage measuring circuit, for connecting the current measurement AD module 26 of three-phase current measuring circuit, the one WLAN adaptation module 27, gps satellite synchronous interface module 28, the first memory module 29, indicating lamp module 30,
Described voltage measurement AD module 25 has voltage measurement circuit Ua, Ub, Uc, Un;
Described current measurement AD module 26 has jaw type current measurement circuit Ia, Ib, Ic, In;
Interval measurement device 4, by the first outer A phase secondary side wiring outside that is stuck in conventional current mutual inductor 3 of electric current card stream pincers 11, measures the current value of input jaw type current measurement circuit Ia, thereby obtains the electric current that secondary side A flows into merge cells 2 mutually; By the second outer B phase secondary side wiring outside that is stuck in conventional current mutual inductor 3 of electric current card stream pincers 12, measure the current value of input jaw type current measurement circuit Ib, thereby obtain the electric current that secondary side B flows into merge cells 2 mutually; By the 3rd outer C phase secondary side wiring outside that is stuck in conventional current mutual inductor 3 of electric current card stream pincers 13, measure the current value of input jaw type current measurement circuit Ic, thereby obtain the electric current that secondary side C flows into merge cells 2 mutually; By the outer secondary side neutral line wiring outside that is stuck in conventional current mutual inductor 3 of neutral current card stream pincers 10, measure the current value of input jaw type current measurement circuit In, thereby obtain the electric current that the secondary side neutral line flows into merge cells 2;
Interval measurement device 4 is directly connected to by the first pressure-wire 14 in the A phase secondary side wiring of conventional voltage mutual inductor 1, for the voltage of measuring voltage measuring circuit Ua, thereby obtains the voltage that secondary side A accesses merge cells 2 mutually; By second voltage line 15, be directly connected in the B phase secondary side wiring of conventional voltage mutual inductor 1, for the voltage of measuring voltage measuring circuit Ub, thereby obtain the voltage that secondary side B accesses merge cells 2 mutually; By tertiary voltage line 16, be directly connected in the C phase secondary side wiring of conventional voltage mutual inductor 1, for the voltage of measuring voltage measuring circuit Uc, thereby obtain the voltage that secondary side C accesses merge cells 2 mutually; By neutral line pressure-wire 17, be directly connected in the neutral line secondary side wiring of conventional voltage mutual inductor 1, for the voltage of measuring voltage measuring circuit Un, thereby obtain the voltage that the secondary side neutral line accesses merge cells 2;
Interval measurement device 4 obtains lock in time by the gps satellite sync cap 6 on gps satellite synchronous interface module 28, by the WLAN (wireless local area network) WLAN interface 7 in a WLAN adaptation module 27, to the measurement head station 5 that head station WLAN interface 8 is housed, sends time and the electric parameter that interval measurement device 4 measures;
As shown in Figure 5, described measurement head station 5 is comprised of a set of modular equipment in a complete shell of being arranged on, comprise the 2nd CPU module 31, outer the second chargeable electrical storage device 32, second source pushbutton switch 33, second clock module 34, the second watchdog module 35, the 2nd WLAN adaptation module 36, the second memory module 37, the MMS Ethernet adaptation module 38 of being arranged with of described the 2nd CPU module 31;
Measure the data that head station 5 is sent from interval measurement device 4 warp LAN (Local Area Network) WLAN interfaces by head station WLAN interface 8 receptions of head station the 2nd WLAN adaptation module 36.
A kind of intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor that the present embodiment provides, comprises that 4 interstations are every measurement mechanism.Concrete while using this intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor to carry out verification, the quantity of the interval measurement device that it comprises, is configured according to the string number of branch road, can be 1 with upper any quantity.
The explanation structure of interval measurement device on a branch road wherein only below, the connected mode of the secondary circuit of interval measurement device and conventional current mutual inductor, conventional voltage mutual inductor, and interval measurement device carries out principle of work and the process of verification to the data on this string branch road.
Described interval measurement device 4 in the present embodiment is comprised of a set of modular equipment in a complete shell of being arranged on, interval measurement device 4 arranges the first chargeable electrical storage device 21 in the periphery of a CPU module 20, the first power knob switch 22, the first clock module 23, the first watchdog module 24, for connecting the voltage measurement AD module 25 of three-phase voltage measuring circuit, for connecting the current measurement AD module 26 of three-phase current measuring circuit, the one WLAN adaptation module 27, gps satellite synchronous interface module 28, the first memory module 29, indicating lamp module 30 forms.
The feature of this interval measurement device is that accumulator is housed, can be after being full of electricity, and the work of can continuing a journey, conveniently under 3/2 mode of connection, outdoor scene does not need external power supply just can carry out.
Next is to be provided with gps satellite synchronous interface module, can be so that the data of each interval measurement measurement device are data on section at the same time.
Be to be finally equipped with WLAN adaptation module, by wireless mode, the data of its measurement sent by WLAN interface, simplify on-the-spot wiring.
In the present embodiment, measure head station 5 in outer the second chargeable electrical storage device 32, second source pushbutton switch 33, second clock module 34, the second watchdog module 35, the 2nd WLAN adaptation module 36, the second memory module 37, the MMS Ethernet adaptation module 38 of being arranged with of the 2nd CPU module 31.
The feature of this measurement head station is that chargeable electrical storage device is housed, can be after being full of electricity, and the work of can continuing a journey, conveniently under 3/2 mode of connection, outdoor scene does not need external power supply just can carry out.
Next is to be provided with memory module, can store be disposed data.
Be to be finally equipped with WLAN adaptation module, by wireless mode, the data of its measurement sent by WLAN interface, simplify on-the-spot wiring.
When intelligent station is normally worked; merge cells 2 gathers the secondary side voltage of conventional voltage mutual inductor 1 and the secondary side current of conventional current mutual inductor 3; after digitizing, through the SV of intelligent substation net, send protection cell device measure and control device 18 to, and then send the MMS net of this intelligent station to.
While at the scene measure and control device being carried out to basic data check, in switch yard, jaw type current measurement circuit Ia, Ib, Ic, the In of interval measurement device 4 are connected on the secondary side of merge cells in Intelligent control cabinet 2 conventional current mutual inductor 3 behind, voltage measurement circuit Ua, the Ub of interval measurement device 4, Uc, Un are directly connected to the secondary side of the conventional voltage mutual inductor 1 after merge cells 2.
Interval measurement device 4 is measured respectively the electric current of inflow merge cells 2 of secondary side A phase, B phase, C phase and the neutral line of the conventional current mutual inductor 3 of this string branch road by first electric current card stream pincers the 11, second electric current card stream pincers the 12, the 3rd electric current card stream pincers 13, neutral current card stream pincers 10; By the first pressure-wire 14, second voltage line 15, tertiary voltage line 16, neutral line pressure-wire 17, measure respectively the voltage of conventional voltage mutual inductor 1 secondary side A phase, B phase, C phase and the neutral line access merge cells 2 of this string branch road of access, and then measurement in real time flows to meritorious, the idle and direction of this string branch road from bus, through gps satellite sync cap 28, monitor the numerical value of clock simultaneously constantly, when the gps satellite time is integer minute, preserving reactive power at this moment with power direction and to measuring head station 5 transmissions.
Interval measurement device 4, after measuring the reactive power and direction of this string branch road, is sent to head station WLAN interface 8 through WLAN (wireless local area network) WLAN interface 7, and then to measuring head station 5; Measure head station 5 through the MMS interface 19 of MMS Ethernet adaptation module, from intelligent substation MMS, obtain protection cell device measure and control device 18 on the net and be published to the electric parameters such as voltage in this online interval of MMS, electric current.After receiving, after data, measurement head station display panel 9 is processed and is presented in portion's list within it.
The structure of the interval measurement device on other branch roads, the connected mode of the secondary circuit of interval measurement device and conventional current mutual inductor, conventional voltage mutual inductor, and interval measurement device principle of work that the data on this string branch road are carried out to verification, identical with described branch road, repeat no more here.
The data that show are as follows:
Table 1
As can be seen from the above table, the reactive power of whole piece bus is balance, but the data of getting on the net from MMS, whole piece bus idle in unbalanced state, and the idle data existing problems of branch road 1 and branch road 4.
Above embodiment is only for the utility model is described, but not to restriction of the present utility model.Although the utility model is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, the technical solution of the utility model is carried out to various combinations, revises or is equal to replacement, do not depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of claim scope of the present utility model.
Claims (2)
1. the 3/2 wiring bus reactive power tester of the intelligent station based on traditional mutual inductor, is characterized in that, comprises an above interval measurement device (4);
Described interval measurement device (4) connects electric current card stream pincers and pressure-wire, connects the secondary circuit of conventional current mutual inductor (3), conventional voltage mutual inductor (1) by the merge cells in Intelligent control cabinet in transformer station (2);
Described interval measurement device (4) is comprised of a set of modular equipment in a complete shell of being arranged on, comprise a CPU module (20), the outer first chargeable electrical storage device (21) that is arranged with in a CPU module (20), the first power knob switch (22), the first clock module (23), the first watchdog module (24), for connecting the voltage measurement AD module (25) of three-phase voltage measuring circuit, for connecting the current measurement AD module (26) of three-phase current measuring circuit, the one WLAN adaptation module (27), gps satellite synchronous interface module (28), the first memory module (29), indicating lamp module (30),
Described voltage measurement AD module (25) has voltage measurement circuit Ua, Ub, Uc, Un;
Described current measurement AD module (26) has jaw type current measurement circuit Ia, Ib, Ic, In;
Interval measurement device (4) is by the outer A phase secondary side wiring outside that is stuck in conventional current mutual inductor (3) of the first electric current card stream pincers (11), measure the current value of input jaw type current measurement circuit Ia, thereby obtain the electric current that secondary side A flows into merge cells (2) mutually; By the outer B phase secondary side wiring outside that is stuck in conventional current mutual inductor (3) of the second electric current card stream pincers (12), measure the current value of input jaw type current measurement circuit Ib, thereby obtain the electric current that secondary side B flows into merge cells (2) mutually; By the outer C phase secondary side wiring outside that is stuck in conventional current mutual inductor (3) of the 3rd electric current card stream pincers (13), measure the current value of input jaw type current measurement circuit Ic, thereby obtain the electric current that secondary side C flows into merge cells (2) mutually; By the outer secondary side neutral line wiring outside that is stuck in conventional current mutual inductor (3) of neutral current card stream pincers (10), measure the current value of input jaw type current measurement circuit In, thereby obtain the electric current that the secondary side neutral line flows into merge cells (2);
Interval measurement device (4) is directly connected in the A phase secondary side wiring of conventional voltage mutual inductor (1) by the first pressure-wire (14), for the voltage of measuring voltage measuring circuit Ua, thereby obtain the voltage that secondary side A accesses merge cells (2) mutually; By second voltage line (15), be directly connected in the B phase secondary side wiring of conventional voltage mutual inductor (1), for the voltage of measuring voltage measuring circuit Ub, thereby obtain the voltage that secondary side B accesses merge cells (2) mutually; By tertiary voltage line (16), be directly connected in the C phase secondary side wiring of conventional voltage mutual inductor (1), for the voltage of measuring voltage measuring circuit Uc, thereby obtain the voltage that secondary side C accesses merge cells (2) mutually; By neutral line pressure-wire (17), be directly connected in the neutral line secondary side wiring of conventional voltage mutual inductor (1), for the voltage of measuring voltage measuring circuit Un, thereby obtain the voltage that the secondary side neutral line accesses merge cells (2);
Interval measurement device (4) obtains lock in time by the gps satellite sync cap (6) on gps satellite synchronous interface module (28), by the WLAN (wireless local area network) WLAN interface (7) in a WLAN adaptation module (27), to the measurement head station (5) that head station WLAN interface (8) is housed, sends time and the electric parameter that interval measurement device (4) measures;
Described measurement head station (5) is comprised of a set of modular equipment in a complete shell of being arranged on, comprise the 2nd CPU module (31), outer the second chargeable electrical storage device (32), second source pushbutton switch (33), second clock module (34), the second watchdog module (35), the 2nd WLAN adaptation module (36), the second memory module (37), the MMS Ethernet adaptation module (38) of being arranged with of described the 2nd CPU module (31);
Measure the data that head station (5) is sent from interval measurement device (4) warp LAN (Local Area Network) WLAN interface by WLAN interface (8) reception of head station the 2nd WLAN adaptation module (36).
2. the intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor according to claim 1, is characterized in that, described traditional transformer intelligent transformer station 3/2 wiring bus tester comprises that four interstations are every measurement mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314294.0U CN204009048U (en) | 2014-06-12 | 2014-06-12 | Intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor |
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| CN201420314294.0U CN204009048U (en) | 2014-06-12 | 2014-06-12 | Intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203984A (en) * | 2014-06-12 | 2015-12-30 | 国网山西省电力公司电力科学研究院 | Intelligent substation 3/2 wiring bus reactive power calibrator based on conventional instrument transformers |
| CN105572625A (en) * | 2015-12-15 | 2016-05-11 | 国网辽宁省电力有限公司大连供电公司 | Reactive electric energy error automatic checking device |
-
2014
- 2014-06-12 CN CN201420314294.0U patent/CN204009048U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203984A (en) * | 2014-06-12 | 2015-12-30 | 国网山西省电力公司电力科学研究院 | Intelligent substation 3/2 wiring bus reactive power calibrator based on conventional instrument transformers |
| CN105203984B (en) * | 2014-06-12 | 2017-07-18 | 国网山西省电力公司电力科学研究院 | The wiring bus reactive power rate tester of intelligent station 3/2 based on traditional transformer |
| CN105572625A (en) * | 2015-12-15 | 2016-05-11 | 国网辽宁省电力有限公司大连供电公司 | Reactive electric energy error automatic checking device |
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Granted publication date: 20141210 Effective date of abandoning: 20170718 |