CN204089728U - High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus - Google Patents
High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus Download PDFInfo
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Abstract
The utility model relates to a kind of High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus, this cover checkout equipment adopts the structure of vehicle-mounted container, adopt highly integrated design to concentrate in 3 containers, be respectively collection control and transformer container, step-down transformer container, step-up transformer container.Grid side high pressure is reduced to low pressure by step-down transformer by checkout equipment, then connects low voltage frequency converter, then is elevated to high-pressure side by step-up transformer, connects tested photovoltaic plant.High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus of the present utility model, be applied to the mobility detect of less than the 4000 meters big-and-middle-sized photovoltaic plants of High aititude, the requirement of capacity 1.5MW and less photovoltaic power station Site Detection can be met, can simulating grid stable state time voltage and frequency disturbance, detect photovoltaic plant and adapt to the ability of grid disturbance.
Description
Technical field
The movable type that the utility model relates to photo-voltaic power generation station grid disturbance analogue system detects, and particularly relates to a kind of High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus.
Background technology
In recent years, China supports to develop new energy technology energetically, along with the quick increase of solar energy power generating installation ratio, the same with wind turbine generator, the big-and-middle-sized photovoltaic plant serviceability when electrical network generation transient fault of electric power system to access electrical network proposes requirement, and State Grid Corporation of China's " photovoltaic plant access electric power network technique specifies " explicitly calls for big-and-middle-sized photovoltaic plant to possess the ability of anti-mains frequency disturbance.
Along with constantly carrying out of grid-connected detection experiment, the grid-connected checkout equipment being applicable to high altitude localities is at present based on power electronic equipment, by the control to power electric component, change the amplitude of output voltage, the malfunction of simulating grid voltage, according to the physical cabling mode in each power station, select the different modes of connection, testing equipment used is serially connected between the inverter in power station and main bus bar, by the control to power electronic equipment, tested inverter is tested.
Current high altitude localities, especially the photovoltaic industry of Qinghai Area presents rapid state of development, and the grid disturbance test of photovoltaic power station grid connected inverter, because checkout equipment is subject to the restriction of height above sea level and insulation distance cannot meet the requirement of the grid-connected detection of the photovoltaic plant of more High aititude.
Qinghai Power Grid photovoltaic plant concentrates on rack weakness, end electrical network that load radix is little mostly, is contrary distribution with power load, and photovoltaic plant is exerted oneself the feature of intermittence, fluctuation in addition, brings considerable influence to the safe and stable operation of electrical network.Current grid-connected checkout equipment cannot carry out high voltage disturbance performance test for the restriction of the examined equipment of test item of inverter.
In view of this, the utility model provides High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus, to meet practical application needs.
Summary of the invention
The technical problems to be solved in the utility model is: in order to fill up the blank of prior art, the utility model devises the portable checkout equipment of high altitude localities grid-connected photovoltaic inverter grid disturbance simulated testing system, according to height above sea level 4000m design, the grid-connected disturbance performance test of all inverters under this height above sea level can be met.
The technical scheme that the utility model adopts is: a kind of High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus, this cover checkout equipment adopts the structure of vehicle-mounted container, highly integrated design is adopted to concentrate in 3 containers, be respectively collection control and transformer container, step-down transformer container, step-up transformer container, container is standard size, meet transport restrictions requirement, it is characterized in that:
Collection control and frequency converter internal container place collection control operating desk, low-voltage distribution cabinet, low voltage frequency converter and water cooling plant, the fixing and mounting bracket inside container are fixed 18 interfaces, for carrying out outside line connection with transformer container;
Step-down transformer internal container places step-down transformer, Medium Voltage Switchgear and supporting PT cabinet, container afterbody places cable drum, fixing and mounting bracket inside container is fixed a secondary cable external interface, for being connected with power station, collection control and frequency converter container;
Step-up transformer internal container places step-up transformer, Medium Voltage Switchgear and supporting PT cabinet, container afterbody places cable drum, fixing and mounting bracket inside container is fixed a secondary cable external interface, for being connected with power station, collection control and frequency converter container;
Grid side high pressure is reduced to low pressure by step-down transformer by checkout equipment, then connects low voltage frequency converter, then is elevated to high-pressure side by step-up transformer, connects tested photovoltaic plant.
High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus as above, it is characterized in that, the high-pressure side of step-down transformer is the electric pressure that 35kV, 10kV two kinds is different, and realized by different taps, low-pressure side is 690V; The low-pressure side of step-up transformer is 690V, and high-pressure side is the electric pressure that 35kV, 10kV two kinds is different, is realized by different taps.
High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus as above, is characterized in that, checkout equipment configuration 2 cover 35kV switch, adopts SF6 switch cubicle, and compatible 35kV and 10kV two kinds of voltage requests.
High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus as above, it is characterized in that, comprise CT in Medium Voltage Switchgear, PT is placed on separately PT cabinet, and PT possesses 35kV and 10kV compatible measurement; In step-up transformer container, be configured with 2 groups of PT, 1 group of 35kV PT, 1 group of 10kV PT, 10kV PT connect on the line.
High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus as above, it is characterized in that, collection control operating desk has guidance panel, PLC and microcomputer backstage, and composition centralized control system, for the Inspect and control of whole grid disturbance mobile detecting system.
High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus as above; it is characterized in that; all smoke alarm unit is installed in collection control and frequency converter container, step-down transformer container and step-up transformer container; after there is smog alarm; alarm signal is sent in the PLC of centralized control system by smoke alarm unit, shuts down flow process by PLC start detection system emergency.
The beneficial effects of the utility model are: High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus of the present utility model, be applied to the mobility detect of less than the 4000 meters big-and-middle-sized photovoltaic plants of High aititude, the requirement of capacity 1.5MW and less photovoltaic power station Site Detection can be met, can simulating grid stable state time voltage and frequency disturbance, detect photovoltaic plant and adapt to the ability of grid disturbance.
This checkout equipment adopts electrical network simulator as frequently disturbing and high voltage disturbing source, and realize frequently disturbing and the function such as high voltage disturbance, simple to operate, reliability is high simultaneously.System has very high voltage regulation limits, and high voltage range of disturbance, up to 1.35PU, has adjusting range wide, tests the features such as flexible.Make inverter more can adapt to the different conditions of electrical network, ensure that power grid security is with stable.
Compared with checkout equipment before, this equipment operating is more convenient, and operate easier, reliability is high, and precision is high, and designability is stronger.Whole checkout equipment container possesses the aseismic design of specialty, is applicable to northwest desertification/half-desert area and carries out grid-connected test job.
Accompanying drawing explanation
Fig. 1 is the link composition of the utility model High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus.
Fig. 2 is collection control and frequency converter internal container layout plan.
Fig. 3 is step-down transformer container and step-up transformer internal container layout plan.
Fig. 4 is the distribution system general frame figure of mobile detection apparatus.
Fig. 5 is frequency converter container power distribution cabinet structure chart.
Fig. 6 is centralized control system structure principle chart.
Fig. 7 is collection control operating desk guidance panel layout schematic diagram.
Fig. 8 is PLC functional structure chart.
Embodiment
In order to understand the utility model better, illustrate content of the present utility model further below in conjunction with embodiment, but content of the present utility model is not only confined to the following examples.Those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values are equally within claims limited range listed by the application.
High altitude localities combining inverter electric network fault analogue system mobile detection apparatus, be applied to the mobility detect of less than the 4000 meters big-and-middle-sized photovoltaic plants of High aititude, meet the requirement of capacity 1.5MW and less photovoltaic power station Site Detection, can simulating grid stable state time voltage disturbance, detect photovoltaic plant and adapt to the ability of grid disturbance.
As shown in the figure, this checkout equipment is directly connected with 35kV or 10kV electrical network, 690V is changed to by step-down transformer after the switch cubicle of net side, the voltage of output voltage and changeable frequency after grid disturbance device, then boost to 35kV or 10kV by step-up transformer, be connected to tested photovoltaic cells by pusher side switch cubicle.Grid disturbance system employing low pressure four-quadrant back-to-back frequency converter mode realizes, and whole checkout equipment realizes the monitoring of system by centralized control system.
35kV or 10kV network system inlet wire is by inner conical plug Access Network side switch cubicle, configuration one group of CT in switch cubicle, CT has protection and measures two groups of taps, protection tap is connected to comprehensive protector, from switch cubicle out rear tap 2 tunnel, PT cabinet is removed on 1 tunnel, back panel wiring terminal is removed on 1 tunnel, step-down transformer is connected again from back panel wiring terminal, external interface terminal in container is connected from step-down transformer outgoing line side, 690V cable is connected from step-down transformer container external interface terminal, connect frequency converter container external interface terminal, 690V cable is connected from the outlet side external interface terminal of frequency converter, connect step-up transformer external interface cable, step-up transformer high-pressure side output line is by inner conical plug access pusher side switch cubicle, and tap 1 road is to PT cabinet, be fixedly connected with 2 groups of PT, 1 group of 35kV PT, 1 group of 10kV PT, 10kV PT connects on the line by electric knife gate, pusher side switch cabinet outlet side configures one group and measures CT, step-down transformer container external interface is connected to from the outlet of pusher side switch cubicle, station cable is connected by external interface.
As shown in Figure 2, collection control and frequency converter internal container place collection control operating desk, low-voltage distribution cabinet, low voltage frequency converter and water cooling plant, the fixing and mounting bracket inside container are fixed 18 interfaces, for carrying out outside line connection with transformer container.In this external collection control operation casing, an air-conditioning is installed.
Step-down transformer internal container places step-down transformer, Medium Voltage Switchgear and supporting PT cabinet, container afterbody places cable drum, fixing and mounting bracket inside container is fixed a secondary cable external interface, for being connected with power station and frequency converter container.Interior layout figure as shown in Figure 3.
Step-up transformer internal container is arranged substantially identical with step-down transformer container, inner placement step-up transformer, Medium Voltage Switchgear and supporting PT cabinet, container afterbody places cable drum, fixing and mounting bracket inside container is fixed a secondary cable external interface, for being connected with power station and frequency converter container.Interior layout figure as shown in Figure 3.
Grid side high pressure is reduced to low pressure by step-down transformer by this checkout equipment, then connects frequency converter, then is elevated to high-pressure side by step-up transformer, connects tested photovoltaic plant.
Therefore this detection system comprises a step-down transformer and a step-up transformer.The high-pressure side of step-down transformer is the electric pressure that 35kV, 10kV two kinds is different, and realized by different taps, low-pressure side is 690V.The low-pressure side of step-up transformer is 690V, and high-pressure side is the electric pressure that 35kV, 10kV two kinds is different, is realized by different taps.
For high elevation mountain area, need revise insulation level and temperature rise according to the regulation in transformer national standard, due to the rising of insulation level, transformer need take the main empty path distance suitably increased between high-tension coil and low-voltage coil, increase insulating cylinder quantity, increase the distance of high-tension coil and iron core yoke part, increase the measures such as the spacing between every phase high-tension coil.For automobile scenarios, consider antidetonation factor, transformer core strengthens colligation, simultaneously by stretching between coil and iron core, coil top and the bottom cushion block adopts rubber blanket to carry out damping, and transformer whole adopts rational steelframe to fix simultaneously, and transformer possesses certain shock resistance.
Checkout equipment configuration 2 cover 35kV switch, because this detection system operates in 4000 meters of height above sea level, therefore selects SF6 switch cubicle, and compatible 35kV and 10kV two kinds of voltage requests.
Switch cubicle design parameter is as follows:
Table 1 switch cabinet parameter table
Variable frequency power supply capacity 1.5MW, voltage on line side 690V, pusher side voltage 690V.Voltage is adjusted to 1.35UN and needs manual adjustments transformer tapping.Harmonic wave function is not provided, exports three-phase and regulate.
Variable frequency power supply basic fundamental parameter is as shown in the table:
Table 2 variable frequency power supply technical parameter table
Comprise CT in switch cubicle, PT is placed on separately PT cabinet.PT should possess 35kV and 10kV compatible measurement, considers certainty of measurement, configures 2 groups of PT at pusher side, 1 group of 35kV PT, and 1 group of 10kV PT, 10kV PT connect on the line.
35kV PT, measurement rated voltage is 35kV, no-load voltage ratio 35kV:100V;
10kV PT, measurement rated voltage is 10kV, no-load voltage ratio 10kV:100V;
During 10kV, the rated current on switch cubicle circuit is 86.61A, therefore CT transformation ratio selection 100:1.
The distribution system of checkout equipment comprises frequency converter container, step-down becomes container and the secondpower supply system of boosting change container.As shown in Figure 4, system adopts the TT mode of connection to the general frame of distribution system.
Power distribution cabinet is installed in frequency converter container, structure as shown in Figure 5, power distribution cabinet size 0.8 meter * 0.6 meter * 2.2 meters (wide X is dark, and X is high).
Frequency converter container secondary power supply capacity is as shown in table 3.
Table 3 frequency converter container secondary power supply capacity
| Equipment | Power supply type/power | Remarks |
| Frequency converter radiating cabinet | 380/2kW | Heat radiating control cabinet/cooling fan |
| Electric heater | 220/1.5kW*3 | One, fin room, Transducer Room two |
| Air-conditioning | 220/1kW | Central station of floating dock air-conditioning |
| Container throws light on | 220/0.45kW | 3 emergent explosion-proof lamps (100W), 3 general lighting lamps (50W) |
| Transducer Room ventilation fan | 220/0.5kW | 250W totally 2 |
| Integrated control platform | 220/5kW | Computer, PLC, accessory power outlet |
| Other | 220/0.2kW | The temperature and humidity controller of Transducer Room, smoke alarm |
| Amount to | 13.65kW | ? |
It is as shown in table 4 that step-down becomes container secondary power supply capacity.
Table 4 step-down becomes container secondary power supply capacity
| Equipment | Power supply type/power | Remarks |
| Step-down becomes supervising device | 220V/0.5kW | ? |
| Electric heater | 220/2kW*3 | 1, cable vault, 2, transformer room |
| Switch cubicle secondary electric power | 220/1kW | Heating in complex protection device, cabinet, illumination |
| Container throws light on | 220/0.3kW | Two emergent explosion-proof lamps (100W), two general lighting lamps (50W) |
| Cable vault's ventilation fan | 220/0.5kW | 250W totally 2 |
| Transformer room's radiator fan | 380/1.5kW | One |
| Cable drum | 380/2kW*2 | Two reels |
| Other | 220/0.2kW | Temperature and humidity controller, smoke alarm |
| Amount to | 14kW | ? |
It is as shown in table 5 that boosting becomes container secondary power supply capacity.
Table 5 boosts and becomes container secondary power supply capacity
| Equipment | Power supply type/power | Remarks |
| Boosting becomes supervising device | 220V/0.5kW | ? |
| Electric heater | 220/2kW*3 | 1, cable vault, 2, transformer room |
| Switch cubicle secondary electric power | 220/1kW | Heating in complex protection device, cabinet, illumination |
| Container throws light on | 220/0.3kW | Two emergent explosion-proof lamps (100W), two general lighting lamps (50W) |
| Cable vault's ventilation fan | 220/0.5kW | 250W totally 2 |
| Transformer room's radiator fan | 380/1.5kW | ? |
| Cable drum | 380/2kW*2 | Two reels |
| Other | 220/0.2kW | Temperature and humidity controller, smoke alarm |
| Amount to | 14kW | ? |
Centralized control system is made up of guidance panel, PLC, microcomputer backstage; for the Inspect and control of whole grid disturbance mobile detecting system; Disturbance Detection operation can be completed, read detection system key node electric quantity information, under malfunction, by scram button, emergency shutdown is carried out to detection system.Centralized control system structure principle chart as shown in Figure 6.
Collection control operating desk is installed in collection control and frequency converter container, size 1.8 meters * 1.0 meters * 1.6 meters (the wide X of long X is high).Collection control operating desk is used for fitting operation panel, PLC and microcomputer backstage, puts detecting instrument (oscilloscope, oscillograph etc.).Guidance panel is arranged circuit breaker remote operation handle, circuit breaker position indicator light, scram button and 35kV/10kV pusher side voltage, current measuring interface.Guidance panel arranges schematic diagram as shown in Figure 7.
PLC is mainly used in industrial process control field, and can provide a large amount of definable I/O interface, reliability is higher, and by expansion module, can support various fieldbus.Centralized control system PLC is mainly used in gathering each subsystem electric quantity information, display system first and second electric quantity information.PLC functional structure chart as shown in Figure 8.
The high-voltage switch gear that step-down becomes container and boosting change container respectively installs an observing and controlling, protection integrated microcomputer protective device cashier's office in a shop; for voltage, the current measurement of the protection (high voltage side of transformer is exported to transformer low voltage side outlet) of transformer and high voltage side of transformer, and support that remote control operates.
Step-down becomes protection: current quick, overcurrent protection, non-ionizing energy loss (alarm of transformer overtemperature, the tripping operation of transformer overtemperature)
Step-down becomes measures: three-phase voltage, three-phase current, residual voltage, zero-sequence current, frequency, meritorious, idle, power factor.
Boosting becomes protection: overcurrent protection, non-ionizing energy loss (alarm of transformer overtemperature, the tripping operation of transformer overtemperature).
Boosting becomes measures: three-phase voltage, three-phase current, residual voltage, frequency, meritorious, idle, power factor.
Smoke alarm unit is installed by the transformer room of transformer room and boosting change container that the variable frequency power supply room of frequency converter container, step-down become container.After there is smog alarm, alarm signal is sent in the PLC of centralized control system by smoke alarm unit, shuts down flow process by PLC start detection system emergency.
Introduce the operating procedure during test of this checkout equipment below.
Operating desk there are " CB1 deciliter " knob, " CB2 deciliter " knob, " test/stop " knob, " fault involution " button, " suddenly stopping " button.
Under shutting down state, CB1 and CB2 is in off-state." CB1 deciliter " knob on rotating operation table and " CB2 deciliter " knob control combined floodgate CB1 and CB2, and system can enter standing-by state.
Under standing-by state, " test/stop " knob is screwed into test position, sends enable contact point signal namely to disturbance generator, disturbance generator possesses compressor start up condition, on main interface, backstage, disturbance generator frame can become red, clicks this frame, can eject the special control software design of disturbance generator.
Under test state, the special control software design of operation disturbance generator, adjust its output voltage and frequency, simulating grid disturbance, start test, the operational manual of software is checked in the concrete operations of software.
Under fault case, PLC can disjunction CB1 and CB2.
System experimentation need observe following flow process:
1), before inspection vehicle major loop is not energized, whether action is good for first test both opens device;
2) after major loop powers on, system is in shutdown state, please check that whether the analog acquisition amount combining guarantor is normal;
3) after entering standing-by state, rotate " test/stop " knob and be in " test " position.After the disturbance generator frame on main interface, backstage reddens, recall special control software design start repetition test operation;
4) after all tests complete, shut down disturbance generator by special control software design, disturbance generator has been shut down rear rotation " test/stop " knob and has been in " stopping " position, and the disturbance generator frame on main interface, backstage becomes ash;
5) divide CB2, point CB1, enters shutdown state;
6) after entering fault case in running, please failure cause be determine, " fault involution " button can be clicked after investigation and get back to shutdown state.
High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus of the present utility model, be applied to the mobility detect of less than the 4000 meters big-and-middle-sized photovoltaic plants of High aititude, the requirement of capacity 1.5MW and less photovoltaic power station Site Detection can be met, can simulating grid stable state time voltage and frequency disturbance, detect photovoltaic plant and adapt to the ability of grid disturbance.Mainly contain following characteristics and function:
(1) adopt electrical network simulator as frequently disturbing and high voltage disturbing source, realize frequently disturbing and the function such as high voltage disturbance, simple to operate, reliability is high simultaneously;
(2) minimum step of frequency disturbance is 0.01Hz, and adjustable extent is 45 ~ 65Hz;
(3) detection system has very high voltage regulation limits, and high voltage range of disturbance up to 1.35PU, need have adjusting range wide, tests advantage flexibly;
(4) detection system meets 10kV, 35kV electric pressure;
(6) detection system possesses perfect protection: to output short-circuit, excess temperature, overcurrent, overvoltage, input undervoltage, inverter is counter fills with protection;
(7) detection system possesses the aseismic design of specialty, is applicable to northwest desertification/half-desert area and carries out grid-connected test job;
(8) detection system possesses high integration, in container body that armamentarium is integrated in several entirety, that close;
(9) detection system provides that special 35kV is resistance to turns round cable, and is equipped with cable power-assisted draw off gear;
(10) detection system container Seal Design, and Automatic-heating, refrigerating plant are installed, there is condensation to prevent equipment.
Claims (6)
1. a High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus, this cover checkout equipment adopts the structure of vehicle-mounted container, highly integrated design is adopted to concentrate in 3 containers, be respectively collection control and transformer container, step-down transformer container, step-up transformer container, container is standard size, meet transport restrictions requirement, it is characterized in that:
Collection control and frequency converter internal container place collection control operating desk, low-voltage distribution cabinet, low voltage frequency converter and water cooling plant, the fixing and mounting bracket inside container are fixed 18 interfaces, for carrying out outside line connection with transformer container;
Step-down transformer internal container places step-down transformer, Medium Voltage Switchgear and supporting PT cabinet, container afterbody places cable drum, fixing and mounting bracket inside container is fixed a secondary cable external interface, for being connected with power station, collection control and frequency converter container;
Step-up transformer internal container places step-up transformer, Medium Voltage Switchgear and supporting PT cabinet, container afterbody places cable drum, fixing and mounting bracket inside container is fixed a secondary cable external interface, for being connected with power station, collection control and frequency converter container;
Grid side high pressure is reduced to low pressure by step-down transformer by checkout equipment, then connects low voltage frequency converter, then is elevated to high-pressure side by step-up transformer, connects tested photovoltaic plant.
2. High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus according to claim 1, it is characterized in that, the high-pressure side of step-down transformer is the electric pressure that 35kV, 10kV two kinds is different, and realized by different taps, low-pressure side is 690V; The low-pressure side of step-up transformer is 690V, and high-pressure side is the electric pressure that 35kV, 10kV two kinds is different, is realized by different taps.
3. High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus according to claim 1, is characterized in that, checkout equipment configuration 2 cover 35kV switch, adopts SF6 switch cubicle, and compatible 35kV and 10kV two kinds of voltage requests.
4. High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus according to claim 1, it is characterized in that, comprise CT in Medium Voltage Switchgear, PT is placed on separately PT cabinet, and PT possesses 35kV and 10kV compatible measurement; In step-up transformer container, be configured with 2 groups of PT, 1 group of 35kV PT, 1 group of 10kV PT, 10kV PT connect on the line.
5. High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus according to claim 1, it is characterized in that, collection control operating desk has guidance panel, PLC and microcomputer backstage, and composition centralized control system, for the Inspect and control of whole grid disturbance mobile detecting system.
6. High aititude photovoltaic plant grid disturbance simulated testing system mobile detection apparatus according to claim 5; it is characterized in that; all smoke alarm unit is installed in collection control and frequency converter container, step-down transformer container and step-up transformer container; after there is smog alarm; alarm signal is sent in the PLC of centralized control system by smoke alarm unit, shuts down flow process by PLC start detection system emergency.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184410A (en) * | 2014-06-30 | 2014-12-03 | 国网青海省电力公司电力科学研究院 | Mobile detection device for high-altitude photovoltaic power station power grid disturbance simulation test system |
| CN105319466A (en) * | 2015-10-26 | 2016-02-10 | 江苏省电力公司扬州供电公司 | Medium voltage generating equipment simulated on-line detection test method |
| CN105991091A (en) * | 2015-02-15 | 2016-10-05 | 国家电网公司 | Mobile detection system for power grid adaptability testing for high-altitude photovoltaic power station |
-
2014
- 2014-06-30 CN CN201420357865.9U patent/CN204089728U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184410A (en) * | 2014-06-30 | 2014-12-03 | 国网青海省电力公司电力科学研究院 | Mobile detection device for high-altitude photovoltaic power station power grid disturbance simulation test system |
| CN105991091A (en) * | 2015-02-15 | 2016-10-05 | 国家电网公司 | Mobile detection system for power grid adaptability testing for high-altitude photovoltaic power station |
| CN105319466A (en) * | 2015-10-26 | 2016-02-10 | 江苏省电力公司扬州供电公司 | Medium voltage generating equipment simulated on-line detection test method |
| CN105319466B (en) * | 2015-10-26 | 2017-12-29 | 江苏省电力公司扬州供电公司 | A kind of middle pressure electric equipment simulation live testing test method |
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