CN213581266U - Wind driven generator static regulation power supply on-line monitoring tool - Google Patents
Wind driven generator static regulation power supply on-line monitoring tool Download PDFInfo
- Publication number
- CN213581266U CN213581266U CN202022499728.7U CN202022499728U CN213581266U CN 213581266 U CN213581266 U CN 213581266U CN 202022499728 U CN202022499728 U CN 202022499728U CN 213581266 U CN213581266 U CN 213581266U
- Authority
- CN
- China
- Prior art keywords
- power supply
- driven generator
- wind driven
- supply system
- static
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
The utility model provides a aerogenerator quiet power supply on-line monitoring frock of transferring, it is configured to can connect aerogenerator quiet power supply system and in order to gather aerogenerator quiet power supply system's voltage signal and current signal, and wherein aerogenerator quiet power supply system of transferring connects the route in order to provide diesel generator to the aerogenerator power supply between aerogenerator and diesel generator, aerogenerator quiet power supply on-line monitoring frock of transferring includes: the 400V voltage monitoring module is configured to switch on or switch off the wind driven generator static power supply system according to a voltage signal of the wind driven generator static power supply system; the delay power supply module is configured to provide a delay conducting signal for the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system; and the residual current monitoring module is configured to provide a residual current alarm signal for the wind driven generator static adjusting power supply system according to the current signal of the wind driven generator static adjusting power supply system.
Description
Technical Field
The utility model relates to a aerogenerator technical field, in particular to aerogenerator static power supply on-line monitoring frock of transferring.
Background
The joint debugging test technology of the wind generating set is a key technology in the field of wind power and is a weak link of domestic wind power manufacturers. The existing wind generating set joint debugging test needs stable power supply, so that a joint debugging test site is limited to a production test workshop and other fixed places with power supply, the application of a joint debugging test technology to wind power plants, unit warehouses, open-air stagnant unit storage yards and other places without stable power supply is greatly limited, if the joint debugging test needs to be carried out in the places, a large amount of manpower and material resources are needed to arrange a power supply device and a cable, and the additional production cost of the wind generating set is increased.
Before formal grid-connected power generation, the grid-connected wind generating set needs to be subjected to static debugging before power generation and drag test in the power generation process. The static debugging refers to the power-on of the wind generating set, and the action debugging of electromechanical equipment such as a pitch control system, a yaw control system and a main control system in the wind generating set is realized. The existing debugging and testing technology separately carries out the static debugging and the dragging testing of the fan, needs two sets of testing devices and operating methods which are respectively used for the static debugging and the dragging testing, is complex to operate, and has larger potential safety hazard when different testing devices are mutually switched. And at present, no device for detecting the power supply quality of the wind turbine generator during static adjustment exists in the market, and the risk is avoided mainly by means of process specifications and manual supervision.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a aerogenerator static power supply on-line monitoring frock to the problem that power supply quality is difficult to guarantee when solving current wind turbine generator system static.
In order to solve the technical problem, the utility model provides a aerogenerator static power supply on-line monitoring frock, it is configured to can connect aerogenerator static power supply system and in order to gather aerogenerator static voltage signal and the current signal who transfers power supply system, wherein aerogenerator static power supply system connects in order to provide the route of diesel generator to the aerogenerator power supply between aerogenerator and diesel generator, wherein aerogenerator static power supply on-line monitoring frock includes:
the 400V voltage monitoring module is configured to switch on or switch off the wind driven generator static power supply system according to a voltage signal of the wind driven generator static power supply system;
the delay power supply module is configured to provide a delay conducting signal for the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system; and
the residual current monitoring module is configured to provide a residual current alarm signal for the wind driven generator static adjusting power supply system according to a current signal of the wind driven generator static adjusting power supply system.
Optionally, in the wind turbine generator static regulation power supply online monitoring tool, the residual current monitoring module is further configured to disconnect the wind turbine generator static regulation power supply system when the current signal is greater than a threshold value.
Optionally, in the wind turbine static regulation power supply on-line monitoring tool, the 400V voltage monitoring module includes:
the voltage unbalance detection module is configured to provide a voltage unbalance alarm signal for the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system and disconnect the wind driven generator static adjusting power supply system;
the voltage drop detection module is configured to provide a voltage drop alarm signal to the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system and disconnect the wind driven generator static adjusting power supply system;
the voltage open-phase detection module is configured to provide a voltage open-phase alarm signal for the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system and disconnect the wind driven generator static adjusting power supply system.
Optionally, in the wind turbine static regulation power supply on-line monitoring tool, the wind turbine static regulation power supply system includes:
a main power line configured to be connected to a three-phase output terminal of the diesel generator and turned on or off by the contactor;
a step-up transformer configured such that a primary thereof is connected to the main power line and a secondary thereof is connected to the elevator;
the step-down transformer is configured to be connected with the primary side of the step-up transformer, and the secondary side of the step-down transformer is connected with the wind driven generator.
Optionally, in the wind turbine static regulation power supply on-line monitoring tool, the wind turbine static regulation power supply on-line monitoring tool further includes:
the first sampling end is arranged at the three phases connected with the main power transmission line and provides a voltage signal of a wind driven generator static regulation power supply system for the time delay power supply module;
the second sampling end is arranged at the primary side connected with the boosting transformer and provides a voltage signal of a static regulation power supply system of the wind driven generator for the 400V voltage monitoring module;
and the third sampling end is arranged on the secondary side connected with the boosting transformer and provides a current signal of a wind driven generator static regulation power supply system for the residual current monitoring module.
Optionally, in the wind turbine static regulation power supply on-line monitoring tool, the wind turbine static regulation power supply on-line monitoring tool further includes:
and the reset button is configured to switch on a circuit of the wind driven generator static regulation power supply on-line monitoring tool when the wind driven generator static regulation power supply system is switched off due to a fault and the fault is eliminated.
Optionally, in the wind turbine static regulation power supply on-line monitoring tool, the wind turbine static regulation power supply on-line monitoring tool further includes:
a power indicator configured to indicate that the wind turbine generator static regulation power supply system is in a conducting state;
the detection normal indicator lamp is configured to indicate the 400V voltage monitoring module to detect that the static regulation power supply system of the wind driven generator is in a voltage normal state;
and the leakage fault indicator lamp is configured to indicate that the residual current monitoring module detects that the static regulation power supply system of the wind driven generator is in a leakage fault state.
In the wind driven generator static adjustment power supply on-line monitoring tool provided by the utility model, the 400V voltage monitoring module is used for switching on or off the wind driven generator static adjustment power supply system according to the voltage signal of the wind driven generator static adjustment power supply system, so that the safety relay is used for automatically monitoring the power quality in the power supply process, and the artificial uncertain factors are avoided; the phenomenon that the 400V power supply quality is unstable (such as voltage unbalance, drop, defect and the like) caused by the generator problem in the fan debugging process is avoided. The delay power supply module provides a delay conduction signal for the wind driven generator static regulation power supply system according to a voltage signal of the wind driven generator static regulation power supply system, so that the problem that the power supply quality is influenced due to unstable power supply electric energy at the initial starting stage of the diesel generator is solved, and the delay power supply module is used for delaying power supply; the residual current monitoring module provides a residual current alarm signal for the wind driven generator static regulation power supply system according to a current signal of the wind driven generator static regulation power supply system and disconnects the wind driven generator static regulation power supply system, so that equipment-level protection on the three-phase grounding risk of the elevator can be realized by adopting a leakage current relay in the residual current monitoring module, and the artificial uncertain factors are avoided; the problem of serious accidents of fire of the lightning protection module in the cabin cabinet caused by the risk of single-phase grounding of the fan equipped with the elevator when the generator is used for supplying power is avoided.
The utility model provides a wind driven generator static adjustment power supply on-line monitoring tool which is a portable tool device, and has small volume, light weight and low transportation and maintenance cost; the 400V diesel generator used together is easy to rent in the market.
Drawings
Fig. 1 is a schematic view of an on-line monitoring tool for the static adjustment power supply of a wind driven generator according to an embodiment of the present invention connected to a static adjustment power supply system of a wind driven generator;
FIG. 2 is a schematic diagram of a control logic of an online monitoring tool for static regulation power supply of a wind driven generator according to an embodiment of the present invention;
FIG. 3 is an installation diagram of an on-line monitoring tool for static regulation power supply of a wind driven generator according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the control process of the tool for on-line monitoring of static power supply of the wind driven generator according to an embodiment of the present invention.
Detailed Description
The operation of the wind turbine static regulation power supply on-line monitoring tool provided by the present invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
Furthermore, features in different embodiments of the invention may be combined with each other, unless otherwise specified. For example, a feature of the second embodiment may be substituted for a corresponding or functionally equivalent or similar feature of the first embodiment, and the resulting embodiments are likewise within the scope of the disclosure or recitation of the present application.
The utility model discloses a core thought lies in providing a aerogenerator static power supply on-line monitoring frock to the problem that power supply quality is difficult to the assurance when solving current wind turbine generator system static.
The utility model relates to a wind generating set monitors, handles the power supply unusually when externally diesel generator power supply debugs to this protection receives a portable equipment of the wind generating set of debugging.
In order to realize the idea, the utility model provides an online monitoring tool for the static adjustment power supply of a wind driven generator, as shown in fig. 1, which is configured to be capable of connecting with a static adjustment power supply system of the wind driven generator so as to collect the voltage signal and the current signal of the static adjustment power supply system of the wind driven generator; the wind driven generator static adjusting power supply system is connected between the wind driven generator 40 and the diesel generator to provide a path for the diesel generator to supply power to the wind driven generator; aerogenerator static power supply on-line monitoring frock includes: the 400V voltage monitoring module 10 is configured to switch on or off the wind driven generator static power supply system according to a voltage signal of the wind driven generator static power supply system; the delay power supply module 20 is configured to provide a delay conducting signal to the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system; the residual current monitoring module 30 is configured to provide a residual current alarm signal to the wind driven generator static power supply system according to a current signal of the wind driven generator static power supply system, and disconnect the wind driven generator static power supply system when the current signal is greater than a threshold value.
Specifically, in the wind turbine static regulation power supply on-line monitoring tool, the 400V voltage monitoring module 10 includes: the voltage unbalance detection module is configured to provide a voltage unbalance alarm signal for the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system and disconnect the wind driven generator static adjusting power supply system. The voltage drop detection module is configured to provide a voltage drop alarm signal to the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system and disconnect the wind driven generator static adjusting power supply system. The voltage open-phase detection module is configured to provide a voltage open-phase alarm signal for the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system and disconnect the wind driven generator static adjusting power supply system.
Further, in the wind turbine static regulation power supply on-line monitoring tool, the wind turbine static regulation power supply system includes: the main transmission line (400VAC, A \ B \ C \ N phase) is configured to be connected with the three-phase output end of the diesel generator and is switched on or off by the contactor KM 1; a step-up transformer T03 configured such that its primary side is connected to the main power line and its secondary side is connected to the elevator; a step-down transformer T02 configured such that its primary side is connected to the secondary side of the step-up transformer T03 and its secondary side is connected to the wind power generator 40. Aerogenerator static power supply on-line monitoring frock still includes: a first sampling terminal, which is arranged at the three phases connected to the main power line and provides a voltage signal of the wind turbine generator static regulation power supply system for the delay power supply module 20; the second sampling end is arranged at the primary side connected with the step-up transformer T03 and provides a voltage signal of a wind driven generator static regulation power supply system for the 400V voltage monitoring module 10; and the third sampling end is arranged on the secondary side connected with the step-up transformer T03 and provides a current signal of the wind driven generator static power supply system for the residual current monitoring module 30.
Optionally, in the wind turbine static regulation power supply on-line monitoring tool, the wind turbine static regulation power supply on-line monitoring tool further includes: and the reset button SB01 is configured to switch on the circuit of the wind driven generator static regulation power supply on-line monitoring tool when the wind driven generator static regulation power supply system is switched off due to a fault and the fault is eliminated. Aerogenerator static power supply on-line monitoring frock still includes: a power indicator light H1 configured to indicate that the wind turbine generator static power supply system is in a conducting state; a detection normal indicator lamp H2 configured to indicate that the 400V voltage monitoring module 10 detects that the wind driven generator static regulation power supply system is in a voltage normal state; and the leakage fault indicator lamp H3 is configured to indicate that the residual current monitoring module 30 detects that the wind driven generator static regulation power supply system is in a leakage fault state.
In the wind driven generator static adjustment power supply on-line monitoring tool provided by the utility model, the 400V voltage monitoring module 10 is used for switching on or off the wind driven generator static adjustment power supply system according to the voltage signal of the wind driven generator static adjustment power supply system, so that the safety relay is used for automatically monitoring the power quality in the power supply process, and the artificial uncertain factors are avoided; the phenomenon that the 400V power supply quality is unstable (such as voltage unbalance, drop, defect and the like) caused by the generator problem in the fan debugging process is avoided. The delay power supply module 20 provides a delay conduction signal for the wind driven generator static regulation power supply system according to a voltage signal of the wind driven generator static regulation power supply system, so that the problem that the power supply quality is influenced due to unstable power supply electric energy at the initial starting stage of the diesel generator is solved, and the delay power supply module 20 is used for delaying power supply; the residual current monitoring module 30 provides a residual current alarm signal for the wind driven generator static regulation power supply system according to a current signal of the wind driven generator static regulation power supply system, and disconnects the wind driven generator static regulation power supply system, so that the leakage current relay in the residual current monitoring module 30 can be adopted to realize equipment-level protection on the three-phase grounding risk of the elevator, and the artificial uncertain factors are avoided; the problem of serious accidents of fire of the lightning protection module in the cabin cabinet caused by the risk of single-phase grounding of the fan equipped with the elevator when the generator is used for supplying power is avoided.
The utility model provides a wind driven generator static adjustment power supply on-line monitoring tool which is a portable tool device, and has small volume, light weight and low transportation and maintenance cost; the 400V diesel generator used together is easy to rent in the market.
The utility model discloses a portable tool equipment, small, light in weight, transportation, maintenance cost are low, and the components and parts that adopt are common on the market, and aerogenerator static transfer power supply on-line monitoring frock of being convenient for maintain the change has realized using safety relay to monitor power supply process electric energy quality, can detect supply voltage's amplitude, phase sequence, unbalance etc. have unusual, can cut off the effect of fan power supply at once; in addition, equipment-level protection is realized on the three-phase grounding risk of the elevator by using a leakage current relay, the principle is mature and reliable, and artificial uncertain factors are avoided; the 400V diesel generator matched with the engine is common in the market and easy to rent; achieving better economic benefit.
The utility model discloses an optimum use state is when aerogenerator unit carries out static debugging, and diesel generator's power supply links to each other with treating the accent fan through this device transfer, can realize following function: the delay power supply module 20 in the device is used for mechanically setting delay time, so that unstable power supply electric energy of the generator at the initial starting stage is avoided; the 400V voltage monitoring module 10 is used for monitoring the 400V power supply quality caused by the generator problem in the fan debugging process in real time, and if abnormity (such as voltage unbalance, drop, defect and the like) is found, the power supply of the debugging fan can be cut off in time; the residual current monitoring module 30 is utilized, the current and the non-zero principle after the three-phase power is grounded are utilized to monitor the power supply of the elevator for debugging the fan, once the grounding fault of the elevator is found, the power supply of the fan can be cut off rapidly, and related devices of the fan are protected from being damaged by the impact of high voltage and high current.
In summary, the above embodiments have described in detail different configurations of the wind turbine static regulation power supply on-line monitoring tool, and of course, the present invention includes but is not limited to the configurations listed in the above embodiments, and any content that is changed based on the configurations provided by the above embodiments is within the scope of the present invention. One skilled in the art can take the contents of the above embodiments to take a counter-measure.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (7)
1. An on-line monitoring tool for the static adjustment power supply of a wind driven generator is characterized by being configured to be capable of being connected with a static adjustment power supply system of the wind driven generator to acquire a voltage signal and a current signal of the static adjustment power supply system of the wind driven generator, wherein the static adjustment power supply system of the wind driven generator is connected between the wind driven generator and a diesel generator to provide a path for the diesel generator to supply power to the wind driven generator, and the on-line monitoring tool for the static adjustment power supply of the wind driven generator comprises:
the 400V voltage monitoring module is configured to switch on or switch off the wind driven generator static power supply system according to a voltage signal of the wind driven generator static power supply system;
the delay power supply module is configured to provide a delay conducting signal for the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system; and
the residual current monitoring module is configured to provide a residual current alarm signal for the wind driven generator static adjusting power supply system according to a current signal of the wind driven generator static adjusting power supply system.
2. The wind driven generator static electricity supply on-line monitoring tool according to claim 1, wherein the residual current monitoring module is further configured to disconnect the wind driven generator static electricity supply system when the current signal is greater than a threshold value.
3. The wind driven generator static electricity supply on-line monitoring tool according to claim 1, wherein the 400V voltage monitoring module comprises:
the voltage unbalance detection module is configured to provide a voltage unbalance alarm signal for the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system and disconnect the wind driven generator static adjusting power supply system;
the voltage drop detection module is configured to provide a voltage drop alarm signal to the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system and disconnect the wind driven generator static adjusting power supply system;
the voltage open-phase detection module is configured to provide a voltage open-phase alarm signal for the wind driven generator static adjusting power supply system according to a voltage signal of the wind driven generator static adjusting power supply system and disconnect the wind driven generator static adjusting power supply system.
4. The wind driven generator static adjusting power supply on-line monitoring tool according to claim 1, wherein the wind driven generator static adjusting power supply system comprises:
a main power line configured to be connected to a three-phase output terminal of the diesel generator and turned on or off by the contactor;
a step-up transformer configured such that a primary thereof is connected to the main power line and a secondary thereof is connected to the elevator;
the step-down transformer is configured to be connected with the primary side of the step-up transformer, and the secondary side of the step-down transformer is connected with the wind driven generator.
5. The wind driven generator static adjusting power supply on-line monitoring tool according to claim 4, further comprising:
the first sampling end is arranged at the three phases connected with the main power transmission line and provides a voltage signal of a wind driven generator static regulation power supply system for the time delay power supply module;
the second sampling end is arranged at the primary side connected with the boosting transformer and provides a voltage signal of a static regulation power supply system of the wind driven generator for the 400V voltage monitoring module;
and the third sampling end is arranged on the secondary side connected with the boosting transformer and provides a current signal of a wind driven generator static regulation power supply system for the residual current monitoring module.
6. The wind driven generator static adjusting power supply on-line monitoring tool according to claim 1, further comprising:
and the reset button is configured to switch on a circuit of the wind driven generator static regulation power supply on-line monitoring tool when the wind driven generator static regulation power supply system is switched off due to a fault and the fault is eliminated.
7. The wind driven generator static adjusting power supply on-line monitoring tool according to claim 1, further comprising:
a power indicator configured to indicate that the wind turbine generator static regulation power supply system is in a conducting state;
the detection normal indicator lamp is configured to indicate the 400V voltage monitoring module to detect that the static regulation power supply system of the wind driven generator is in a voltage normal state;
and the leakage fault indicator lamp is configured to indicate that the residual current monitoring module detects that the static regulation power supply system of the wind driven generator is in a leakage fault state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022499728.7U CN213581266U (en) | 2020-11-03 | 2020-11-03 | Wind driven generator static regulation power supply on-line monitoring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022499728.7U CN213581266U (en) | 2020-11-03 | 2020-11-03 | Wind driven generator static regulation power supply on-line monitoring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213581266U true CN213581266U (en) | 2021-06-29 |
Family
ID=76533586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022499728.7U Active CN213581266U (en) | 2020-11-03 | 2020-11-03 | Wind driven generator static regulation power supply on-line monitoring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213581266U (en) |
-
2020
- 2020-11-03 CN CN202022499728.7U patent/CN213581266U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107966633B (en) | Method and system for rapidly judging single-phase earth fault line of power distribution network of power supply system | |
| CN108548986B (en) | High-resistance grounding detection system, device and method of low-current grounding system | |
| CN101291054B (en) | Diagnosis and protection method for residue current of ground fault in electrical power system | |
| CN103618377B (en) | For being connected to backup auto-activating device system and the spare power automatic switching method of small power supply | |
| CA2760888A1 (en) | Fault-ride-through method, converter and power generating unit for a wind turbine | |
| CN108092312B (en) | Temporary complete set of starting system under unfinished matched output engineering | |
| CN104079065B (en) | Dislocation generation system uses simultaneous interconnecting mode to access electric network operation method | |
| CN109884454A (en) | The intelligent pole-mounted circuit breaker of one or two fusions of one kind and cable monitoring system | |
| CN207066733U (en) | A kind of secondary conditioning device of switch cubicle mechanical characteristic test | |
| CN204375298U (en) | Demarcation switch Simulated training device | |
| CN213581266U (en) | Wind driven generator static regulation power supply on-line monitoring tool | |
| CN111864703B (en) | Device and method for realizing direct-current networking of ship electric propulsion system | |
| CN106340954A (en) | Method for identifying line breaking of power supply line and switching to standby power supply | |
| CN102981121B (en) | Wind turbine generator set mobile type low voltage crossing test unit theft-resistant link chain and implementation method | |
| CN203301223U (en) | Rapid power supply switching device | |
| CN203084141U (en) | Polarity test device for transformer bushing CT (Captive Test) and neutral point CT | |
| CN105974229A (en) | Disconnection-free testing method for high voltage electric equipment in transformer substation | |
| CN215681798U (en) | Voltage parallel device capable of automatically switching states | |
| CN104749453A (en) | Method for reducing influences imposed on user voltage sag by external grid single-phase grounding fault | |
| Chen et al. | Distributed energy resource overvoltage during un-intentional islanding | |
| CN209200658U (en) | The protection system of 35kv substation transmission system | |
| CN104821564A (en) | Bus residual voltage maintaining device | |
| CN104505823A (en) | Method for power maintenance through transient power stop and transient stop selective reclosing circuit | |
| Xiong et al. | An analysis of the burning accident of the tower bottom cabinet of G58-850KW wind turbine group | |
| CN214409251U (en) | Grounding fault alarm device for low-voltage side of transformer for high-temperature gas cooled reactor high-voltage station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |