CN203911578U - Station service power wiring system applied to two-drive-one gas-turbine electric power plant - Google Patents
Station service power wiring system applied to two-drive-one gas-turbine electric power plant Download PDFInfo
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- CN203911578U CN203911578U CN201420329377.7U CN201420329377U CN203911578U CN 203911578 U CN203911578 U CN 203911578U CN 201420329377 U CN201420329377 U CN 201420329377U CN 203911578 U CN203911578 U CN 203911578U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The utility model relates to a station service power wiring system applied to a two-drive-one gas-turbine electric power plant. The station service power wiring system is formed by arranging a gas-turbine generator wiring system and a steam-turbine generator wiring system which are respectively connected with an in-plant booster station, wherein a high-voltage first bus and a high-voltage second bus are arranged inside the gas-turbine generator wiring system and are respectively connected with house loads of the gas-turbine generator wiring system and the steam-turbine generator wiring system, and the high-voltage second bus is further connected with a black-start diesel engine. Therefore, the station service power wiring system can be powered by three reliable power sources, and can be driven to operate via the power generated by the black-start diesel engine in the state that the whole plant is power off, the reliability of the high-voltage buses is improved, the influence of any power source failure on the safety operation of the electric power plant is reduced, and the failure range is narrowed; and since the steam-turbine generator set is not provided with a plant-used high-voltage transformer with no house load, the quantity of plant-used high-voltage transformers is reduced, the investment is saved, and the operating loss is reduced.
Description
Technical field
The utility model belongs to combustion machine Station Service Electrical-Energy for electrical domain, is specifically related to one and is applied to two and drags a combustion machine Station Service Electrical-Energy wiring system.
Background technology
Gas steam combined cycle for power generation unit utilizes the associating of brayton cycle and Rankine cycle from thermodynamics, can realize combined cycle generation efficiency up to 55%-60%, exceed an order of magnitude than current advanced person's efficiency (40%-45%) overcritical, ultra supercritical fired power generating unit; It is few that modern gas turbines generating set has more exhaust emission, environmentally friendly advantage, adopting under dry low-nitrogen oxide discharging burning advanced technology, can reach≤15 Μ L/L of the level of combustion turbine exhaustion harmful components nitrogen oxide (NOX) and oxycarbide (CO), are far superior to conventional thermal power generation discharge index; Gas steam combined cycle for power generation unit also has operational mode feature flexibly, and coal-burning power plant's start-stop time is long, is suitable as base load operation, peaking performance is poor, and Gas Turbine Generating Units starts fast, starts success rate high, can tape base lotus can be used for again peak regulation, and be suitable for and approach load center; Gas steam combined cycle for power generation unit has small investment simultaneously, and unit price is low, and water consumption is few, saves the features such as occupation of land.In the current energy-consuming of China taking coal as main, become the one of the main reasons of current many big cities haze, environmental protection and sustainable development require China's energy resource structure progressively to change, the proportion of coal reduces, this gas steam combined cycle for power generation unit that utilizes had both adopted clean energy resource as fuel, and whole power plant efficiency is higher, can meet again environmental requirement, therefore gas steam combined cycle for power generation unit will will progressively be promoted in China.
Two what drag that a dynamo-electric factory of combustion adopts is multiaxis combined cycle mode, namely gas turbine, steam turbine respectively respectively with the multiaxis combined cycle of generator combination.The weary flue gas of high temperature of discharging after gas turbine work done is reclaimed and is converted to steam by waste heat boiler, sends into steam turbine generating, how much weary flue gases of high temperature of being got rid of by Gas Turbine Generating Units completely of steam turbine generating set generating number determine.Gas Turbine Generating Units is in the time of operation, have and start soon, start success rate high, and the subsidiary engine of Gas Turbine Generating Units is less, the feature that subsidiary engine capacity is little, Gas Turbine Generating Units is applicable to the features such as black start operating performance, the quality of the station service electrical system performance of a power plant, mainly see that can this station service electrical system meet the requirement of the various operating modes of power plant, the reliability height of station service electrical system, the operational flexibility of station service electrical system, the factors such as structural complexity and project cost and operating cost, therefore Station Service Electrical-Energy system should be according to the character of power plant, feature and making to measure, can not be stereotyped.
Utility model content
The purpose of this utility model is to overcome the shortcoming existing in above-mentioned prior art, provides one to be applied to two and drags a combustion machine Station Service Electrical-Energy wiring system, has the number of units that reduces station service transformer, reduces investment outlay, and has reduced the advantage of running wastage.
For achieving the above object, the utility model by the following technical solutions: comprise the dynamo-electric wiring system of combustion and steam turbine wiring system;
Described combustion machine wiring system comprises: the first fuel gas generation unit, the outlet of the first fuel gas generation unit through enclosed busbar successively through the first generator outlet circuit breaker, the first station service transformer), the first lead-in circuit breaker is connected to high pressure the first bus; On described high pressure the first bus, be provided with the first coupled feeder breaker of one end, the second feeder breaker and the 3rd feeder breaker; Wherein the other end of the first feeder breaker connects the first load, and the other end of the second feeder breaker is connected to the first high-tension motor, and the other end of the 3rd feeder breaker is connected to the first subdistribution transformer depressor; And high pressure the first bus connects high pressure the second bus through the first bus, on high pressure the second bus, be provided with the 4th coupled feeder breaker of one end, the 5th feeder breaker, the 6th feeder breaker, the 7th feeder breaker, wherein the other end of the 4th feeder breaker connects the second subdistribution transformer depressor, and the other end of the 5th feeder breaker connects the second load; The other end of the 6th feeder breaker connects the second high-tension motor, and the other end of the 7th feeder breaker connects black startup diesel engine; On described high pressure the second bus, be also connected with the second lead-in circuit breaker, the second lead-in circuit breaker connects the second station service transformer, the second generator outlet circuit breaker and the second fuel gas generation unit successively through enclosed busbar, and the output of the second generator outlet circuit breaker is also connected to booster stations in factory through the second main transformer low-pressure side circuit breaker and the second fuel gas generation unit main transformer;
The first described lead-in circuit breaker is connected with the second lead-in circuit breaker via line, and on circuit, is provided with the first logic controller, and the first logic controller also connects and the first bus;
Between the first described subdistribution transformer depressor and the second subdistribution transformer depressor, connect through the second logic controller, and be also provided with second bus in parallel with the second logic controller;
The output of the first described generator outlet circuit breaker is also connected to booster stations in factory through the first main transformer low-pressure side circuit breaker and the first fuel gas generation unit main transformer;
Described mechanism of qi wiring system comprises: load and successively coupled turbo generator set and turbo generator set main transformer, the output of turbo generator set main transformer connects booster stations in factory.
In the first described station service transformer and the upstream circuitry of the second station service transformer, be provided with current transformer.
On described high pressure the first bus and high pressure the second bus, be connected with respectively the first lightning arrester and the second lightning arrester.
The first described fuel gas generation unit main transformer and the second fuel gas generation unit main transformer are connected in the circuit of booster stations in factory and are provided with current transformer.
Described the first load and the second load are combustion machine auxiliary transformer.
Described the first high-tension motor, the first subdistribution transformer depressor, the second subdistribution transformer depressor and the second high-tension motor is turbo generator set station-service load.
The survey voltage device of promising voltage transformer is set between the first described station service transformer and the first lead-in circuit breaker.
The utlity model has following beneficial effect: the prior art of comparing, the utility model is by the dynamo-electric wiring system of the combustion being all connected with booster stations in factory and the steam turbine wiring system that arrange; Wherein fire and in dynamo-electric wiring system, be provided with high pressure the first bus and high pressure the second bus, on it, be connected with respectively fuel gas generation unit, and on high pressure the second bus, be also connected with black startup diesel engine, thereby native system has three reliable source of power power supplies, make under state that native system can have a power failure in whole plant area, thereby drive native system work through black startup diesel power generation, improve the reliability of high voltage bus, reduce any one power failure, on the impact of safe operation of power plant, dwindle fault coverage; And because turbo generator set is not established station service transformer, be not with station-service load, reduce the number of units of station service transformer, reduce investment outlay, reduced running wastage.
Further, owing to being provided with lightning arrester, thereby strengthened stability and the fail safe of system, the system that ensured can normally operation under various overvoltage conditions.
Brief description of the drawings
Fig. 1 is electrical principle wiring schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1, the utility model comprises the dynamo-electric wiring system of combustion and steam turbine wiring system;
Combustion machine wiring system comprises: the outlet of the first fuel gas generation unit 1, the first fuel gas generation unit 1 connects successively the first generator outlet circuit breaker 2, the first station service transformer 6, the first lead-in circuit breaker 8-1 through enclosed busbar and is connected to high pressure the first bus 24; On described high pressure the first bus 24, be provided with the first coupled feeder breaker 9-1 of one end, the second feeder breaker 9-2 and the 3rd feeder breaker 9-3, wherein the other end of the first feeder breaker 9-1 connects the first load 11, the other end that the other end of the second feeder breaker 9-2 is connected to the first high-tension motor 10, the three feeder breaker 9-3 is connected to the first subdistribution transformer depressor 14-1; And high pressure the first bus 24 connects high pressure the second bus 25 through the first bus 13-1, on high pressure the second bus 25, be provided with one end and its 4th feeder breaker (9-4), the 5th feeder breaker (9-5), the 6th feeder breaker (9-6), the 7th feeder breaker (9-7), wherein the other end of the 4th feeder breaker 9-4 connects the second subdistribution transformer depressor 14-2, and the other end of the 5th feeder breaker 9-5 connects the second load 15; The other end that the other end of the 6th feeder breaker 9-6 connects the second high-tension motor 17, the seven feeder breaker 9-7 connects black startup diesel engine 19; On described high pressure the second bus 25, be also connected with the second lead-in circuit breaker 8-2, the second lead-in circuit breaker 8-2 via line connects the second station service transformer 18, the second generator outlet circuit breaker 21 and the second fuel gas generation unit 20 successively, and the output of the second generator outlet circuit breaker 21 is also connected to booster stations in factory through the second main transformer low-pressure side circuit breaker 22 and the second fuel gas generation unit main transformer 23; The first lead-in circuit breaker 8-1 is connected with the second lead-in circuit breaker 8-2 via line, and on circuit, is provided with the first logic controller 12-1, and the first logic controller 12-1 also connects and the first bus 13-1; Between the first subdistribution transformer depressor 14-1 and the second subdistribution transformer depressor 14-2, connect through the second logic controller 12-2, and be also provided with the second bus 13-2 in parallel with the second logic controller 12-2; The first fuel gas generation unit main transformer 4 and the second fuel gas generation unit main transformer 23 are connected in the circuit of booster stations in factory and are provided with current transformer; The output of the first generator outlet circuit breaker 2 is also connected to booster stations in factory through the first main transformer low-pressure side circuit breaker 3 and the first fuel gas generation unit main transformer 4; In the upstream circuitry of the first station service transformer 6 and the second station service transformer 18, be provided with current transformer.On high pressure the first bus 24 and high pressure the second bus 25, be connected with respectively the first lightning arrester 5 and the second lightning arrester 16; The first load 11 and the second load 15 are combustion machine auxiliary transformer.And the survey voltage device 7 of promising voltage transformer is set between the first station service transformer 6 and the first lead-in circuit breaker 8-1.The first high-tension motor 10, the first subdistribution transformer depressor 14-1, the second subdistribution transformer depressor 14-2 and the second high-tension motor 17 are turbo generator set station-service load
Steam turbine wiring system comprises: coupled turbo generator set 27 and turbo generator set main transformer 28 successively, the output of turbo generator set main transformer 28 connects booster stations in factory.
Under power cut of whole factory situation, if black startup gas electricity generator 19, first start the black startup diesel engine generator 19 that is connected on high pressure the second bus 25, power to the first fuel gas generation unit auxiliary burden through high pressure the second bus 25, the first bus 13-1 and the second bus 13-2, high pressure the first bus 24, feeder breaker 9, start the first fuel gas generation unit 1; If black startup gas electricity generator 19, first starts the black startup diesel generating set 19 that is connected on high pressure the second bus 25, power to the second fuel gas generation unit auxiliary burden through high pressure the second bus 25, feeder breaker 9, start the second fuel gas generation unit 15.Such two fuel gas generation units only arrange a black startup diesel generating set 19, just can ensure the reliable black startup of two fuel gas generation units.
In normal operation, powered to high pressure the first bus 24 through generator outlet the first circuit breaker 2, the first station service transformer 6 and the first lead-in circuit breaker 8 by the first fuel gas generation unit 1, to load high-tension motor and the first subdistribution transformer depressor 14-1 power supply of power supply; When the first fuel gas generation unit 1 is stopped transport, by booster stations in factory through the first main transformer low-pressure side circuit breaker 3, the first station service transformer 6 and the high pressure first bus lead-in circuit breaker 8-1 of the first fuel gas generation unit main transformer 4 of the first fuel gas generation unit 1, the first fuel gas generation unit 1 to high pressure the first bussed supply 24; When the first station service transformer 6 faults, high pressure the second bus 25 to high pressure the first bussed supply 24, will have three reliable power supplys for high pressure the first bus 24 through the first bus 13-1 like this, and power supply reliability is very high.The principle that high pressure the second bus 25 obtains power supply is identical with the principle that high pressure the first bus 24 obtains power supply, just power supply is realized power supply through booster stations in the second generator outlet circuit breaker 21, the second station service transformer 18 and the second lead-in circuit breaker 8-2 or factory through the second fuel gas generation unit main transformer 23, the second main transformer low-pressure side circuit breaker 22, the second station service transformer 18 and the second lead-in circuit breaker 8-2 by the second fuel gas generation unit 15, and high pressure the first bus 24 process buses 13 are to three kinds of modes such as high pressure the second bus 25 power supplies.
Utilize the waste heat of two fuel gas generation units, drive a turbo generator set through waste heat boiler, realize two comprehensive utilizations of energy of dragging a pattern, the first high-tension motor 10 connecing on high pressure the first bus 24 and high pressure the second bus 25, subdistribution transformer depressor 14-1 is the subsidiary engine load of turbo generator set 27, these subsidiary engine loads are powered by female 24 lines of reliable high pressure first or high pressure the second bus 25, as long as can ensure reliably that Gas Turbine Generating Units is in operation, the weary flue gas of high temperature of discharging after gas turbine work done is reclaimed and is converted to steam by waste heat boiler, send into steam turbine generating, can not waste the weary flue gas of high temperature, improve combined cycle generation efficiency.
The first lead-in circuit breaker 8-1, the second lead-in circuit breaker 8-2 and the first bus 13-1 have logic blocking, and the first logic controller 12-1 realizes this logic blocking;
Between the first subdistribution transformer depressor 14-1, the second subdistribution transformer depressor 14-2 and the second bus 13-2, have logic blocking, the second logic controller 12-2 realizes this logic blocking.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model; can not assert that embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by submitted to claims.
Claims (7)
1. be applied to two and drag a combustion machine Station Service Electrical-Energy wiring system, it is characterized in that: comprise the dynamo-electric wiring system of combustion and steam turbine wiring system;
Described combustion machine wiring system comprises: the first fuel gas generation unit (1), and the outlet of the first fuel gas generation unit (1) is connected to high pressure the first bus (24) through the first generator outlet circuit breaker (2), the first station service transformer (6), the first lead-in circuit breaker (8-1) successively through enclosed busbar; On described high pressure the first bus (24), be provided with coupled the first feeder breaker (9-1) in one end, the second feeder breaker (9-2) and the 3rd feeder breaker (9-3); Wherein the other end of the first feeder breaker (9-1) connects the first load (11), the other end of the second feeder breaker (9-2) is connected to the first high-tension motor (10), and the other end of the 3rd feeder breaker (9-3) is connected to the first subdistribution transformer depressor (14-1); And high pressure the first bus (24) connects high pressure the second bus (25) through the first bus (13-1), on high pressure the second bus (25), be provided with the 4th coupled feeder breaker (9-4) of one end, the 5th feeder breaker (9-5), the 6th feeder breaker (9-6), the 7th feeder breaker (9-7), wherein the other end of the 4th feeder breaker (9-4) connects the second subdistribution transformer depressor (14-2), and the other end of the 5th feeder breaker (9-5) connects the second load (15); The other end of the 6th feeder breaker (9-6) connects the second high-tension motor (17), and the other end of the 7th feeder breaker (9-7) connects black startup diesel engine (19); On described high pressure the second bus (25), be also connected with the second lead-in circuit breaker (8-2), the second lead-in circuit breaker (8-2) connects the second station service transformer (18), the second generator outlet circuit breaker (21) and the second fuel gas generation unit (20) successively through enclosed busbar, and the output of the second generator outlet circuit breaker (21) is also connected to booster stations in factory through the second main transformer low-pressure side circuit breaker (22) and the second fuel gas generation unit main transformer (23);
Described the first lead-in circuit breaker (8-1) is connected with the second lead-in circuit breaker (8-2) via line, and on circuit, be provided with the first logic controller (12-1), and the first logic controller (12-1) also connects and the first bus (13-1);
Between the first described subdistribution transformer depressor (14-1) and the second subdistribution transformer depressor (14-2), connect through the second logic controller (12-2), and be also provided with second bus (13-2) in parallel with the second logic controller (12-2);
The output of the first described generator outlet circuit breaker (2) is also connected to booster stations in factory through the first main transformer low-pressure side circuit breaker (3) and the first fuel gas generation unit main transformer (4);
Described mechanism of qi wiring system comprises: load (26) and successively coupled turbo generator set (27) and turbo generator set main transformer (28), the output of turbo generator set main transformer (28) connects booster stations in factory.
2. one according to claim 1 is applied to two and drags a combustion machine Station Service Electrical-Energy wiring system, it is characterized in that: in described the first station service transformer (6) and the upstream circuitry of the second station service transformer (18), be provided with current transformer.
3. one according to claim 1 is applied to two and drags a combustion machine Station Service Electrical-Energy wiring system, it is characterized in that: on described high pressure the first bus (24) and high pressure the second bus (25), be connected with respectively the first lightning arrester (5) and the second lightning arrester (16).
4. one according to claim 1 is applied to two and drags a combustion machine Station Service Electrical-Energy wiring system, it is characterized in that: the first described fuel gas generation unit main transformer (4) and the second fuel gas generation unit main transformer (23) are connected in the circuit of booster stations in factory and are provided with current transformer.
5. one according to claim 1 is applied to two and drags a combustion machine Station Service Electrical-Energy wiring system, it is characterized in that: described the first load (11) and the second load (15) are combustion machine auxiliary transformer.
6. one according to claim 1 is applied to two and drags a combustion machine Station Service Electrical-Energy wiring system, it is characterized in that: described the first high-tension motor (10), the first subdistribution transformer depressor (14-1), the second subdistribution transformer depressor (14-2) and the second high-tension motor (17) is turbo generator set station-service load.
7. one according to claim 1 is applied to two and drags a combustion machine Station Service Electrical-Energy wiring system, it is characterized in that: the survey voltage device (7) that promising voltage transformer is set between described the first station service transformer (6) and the first lead-in circuit breaker (8-1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420329377.7U CN203911578U (en) | 2014-06-19 | 2014-06-19 | Station service power wiring system applied to two-drive-one gas-turbine electric power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420329377.7U CN203911578U (en) | 2014-06-19 | 2014-06-19 | Station service power wiring system applied to two-drive-one gas-turbine electric power plant |
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| CN203911578U true CN203911578U (en) | 2014-10-29 |
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| CN201420329377.7U Active CN203911578U (en) | 2014-06-19 | 2014-06-19 | Station service power wiring system applied to two-drive-one gas-turbine electric power plant |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634007A (en) * | 2016-01-19 | 2016-06-01 | 鞍钢集团工程技术有限公司 | Generator outlet power distribution method |
| CN106474642A (en) * | 2016-12-02 | 2017-03-08 | 苏州迪森生物能源有限公司 | A kind of fire-fighting system of gas turbine |
| CN107612137A (en) * | 2017-11-06 | 2018-01-19 | 国网福建省电力有限公司 | A kind of high reliability pressurized-water reactor nuclear power plant station service electric power system |
| CN108767976A (en) * | 2018-06-25 | 2018-11-06 | 云南祥丰金麦化工有限公司 | Phosphatic fertilizer company is in major network dead electricity with the method for supplying power to of steam turbine generator isolated power grid |
| CN110518692A (en) * | 2019-09-30 | 2019-11-29 | 长江勘测规划设计研究有限责任公司 | A kind of power station hydrogen energy storing and electricity generating black starting-up system and method |
| CN112648080A (en) * | 2021-01-11 | 2021-04-13 | 大连欧谱纳透平动力科技有限公司 | Black start system of gas turbine |
| CN115249982A (en) * | 2021-04-28 | 2022-10-28 | 华能北京热电有限责任公司 | Power grid safety control system for load control of gas turbine generator set |
-
2014
- 2014-06-19 CN CN201420329377.7U patent/CN203911578U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634007A (en) * | 2016-01-19 | 2016-06-01 | 鞍钢集团工程技术有限公司 | Generator outlet power distribution method |
| CN105634007B (en) * | 2016-01-19 | 2018-08-07 | 鞍钢集团工程技术有限公司 | A kind of generator outlet distribution method |
| CN106474642A (en) * | 2016-12-02 | 2017-03-08 | 苏州迪森生物能源有限公司 | A kind of fire-fighting system of gas turbine |
| CN107612137A (en) * | 2017-11-06 | 2018-01-19 | 国网福建省电力有限公司 | A kind of high reliability pressurized-water reactor nuclear power plant station service electric power system |
| CN108767976A (en) * | 2018-06-25 | 2018-11-06 | 云南祥丰金麦化工有限公司 | Phosphatic fertilizer company is in major network dead electricity with the method for supplying power to of steam turbine generator isolated power grid |
| CN108767976B (en) * | 2018-06-25 | 2021-04-09 | 云南祥丰金麦化工有限公司 | Power supply method for phosphate fertilizer enterprise to operate in isolated grid by using steam turbine generator when main grid loses power |
| CN110518692A (en) * | 2019-09-30 | 2019-11-29 | 长江勘测规划设计研究有限责任公司 | A kind of power station hydrogen energy storing and electricity generating black starting-up system and method |
| CN110518692B (en) * | 2019-09-30 | 2024-04-12 | 长江勘测规划设计研究有限责任公司 | Hydropower station hydrogen energy storage power generation black start system and method |
| CN112648080A (en) * | 2021-01-11 | 2021-04-13 | 大连欧谱纳透平动力科技有限公司 | Black start system of gas turbine |
| CN115249982A (en) * | 2021-04-28 | 2022-10-28 | 华能北京热电有限责任公司 | Power grid safety control system for load control of gas turbine generator set |
| CN115249982B (en) * | 2021-04-28 | 2024-04-26 | 华能北京热电有限责任公司 | Power grid safety control system for load control of gas turbine generator set |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA Free format text: FORMER NAME: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
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| CP01 | Change in the name or title of a patent holder |
Address after: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Address before: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Patentee before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation |