CN210738682U - Distributed energy power station system - Google Patents
Distributed energy power station system Download PDFInfo
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- CN210738682U CN210738682U CN201921897902.4U CN201921897902U CN210738682U CN 210738682 U CN210738682 U CN 210738682U CN 201921897902 U CN201921897902 U CN 201921897902U CN 210738682 U CN210738682 U CN 210738682U
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Abstract
The utility model discloses a distributed energy power station system, which comprises a plurality of gas turbine generator sets and a plurality of waste heat boilers connected with the gas turbine generator sets; the high-pressure steam outlets of all the waste heat boilers are connected to the back press through high-pressure connecting main pipes; the low-pressure steam outlets of all the waste heat boilers are connected with the steam inlet end of the low-pressure communication main pipe; the first steam outlet end of the low-pressure communication main pipe is connected with the straight condensing machine through a low-pressure valve; the second steam outlet end of the low-voltage communication main pipe is connected to the heat supply pipeline through a heat supply valve; the steam outlet of the back press is connected with the steam inlet end of the low-pressure communicating main pipe through a steam outlet valve. This system can realize the multiple supporting lectotype of power station host computer, provides multiple to external energy supply mode, and arbitrary external energy supply mode all can be under the preferred its heat supply power peak regulation operating mode of guaranteeing, guarantees gas turbine generating set, exhaust-heat boiler, back pressure machine and pure congeals the machine and operates at economic load safety and stability all the time simultaneously, realizes the maximize that the energy ladder utilized.
Description
Technical Field
The utility model relates to an energy field especially relates to a distributing type energy power station system.
Background
In the existing gas-steam combined cycle cold, heat and power cogeneration unit, one waste heat boiler is correspondingly configured on one gas turbine, one steam turbine is correspondingly configured on one waste heat boiler, the matching of the gas turbine, the waste heat boiler and the steam turbine is single, the maximization of the comprehensive utilization rate of energy is not realized, and the requirements of flexible adjustment and long-term safety and reliability are difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a distributing type energy power station system can provide multiple energy supply mode, guarantees that each equipment realizes the maximize that the energy ladder utilized under the prerequisite of economic load safety and stability operation.
In order to achieve the purpose, the utility model provides a distributed energy power station system, which comprises a plurality of gas turbine generator sets and a plurality of waste heat boilers connected with the gas turbine generator sets; all the high-pressure steam outlets of the waste heat boiler are connected to a back press through high-pressure connecting main pipes; all the low-pressure steam outlets of the waste heat boiler are connected with the steam inlet end of the low-pressure communication main pipe;
the first steam outlet end of the low-pressure communication main pipe is connected with the straight condensing machine through a low-pressure valve; the second steam outlet end of the low-pressure communication main pipe is connected to a heat supply pipeline through a heat supply valve; and the steam outlet of the back press is connected with the steam inlet end of the low-pressure communication main pipe through a steam outlet valve.
Preferably, a linkage valve which is automatically linked when the back press exits from operation is arranged between any high-pressure steam outlet and the low-pressure communication main pipe.
Preferably, a third steam outlet end of the low-pressure communication main pipe is connected with a condenser, and a low-side temperature and pressure reducing valve which is automatically adjusted to realize temperature and pressure reduction is arranged between the third steam outlet end and the condenser;
and a high bypass temperature and pressure reducing valve for automatically adjusting to realize temperature and pressure reduction when the back press quits operation is arranged between any linkage valve and the low-pressure communication main pipe.
Preferably, all the linkage valves comprise a plurality of first linkage valves respectively arranged between any high-pressure steam outlet and the high-side temperature and pressure reducing valve and a second linkage valve arranged between the high-side temperature and pressure reducing valve and the low-pressure communication main pipe.
Preferably, control valves are arranged between any high-pressure steam outlet and the high-pressure communication main pipe and between any low-pressure steam outlet and the low-pressure communication main pipe.
Preferably, two control valves connected in series are arranged between any high-pressure steam outlet and the high-pressure communication main pipe.
Preferably, a main steam valve of the back pressure machine and an adjusting valve of the back pressure machine are arranged between the high-pressure communication main pipe and the back pressure machine in series;
and a main steam valve of the straight condenser and an adjusting valve of the straight condenser are arranged between the low-pressure communication main pipe and the straight condenser in series.
Preferably, the waste heat boiler is provided with two waste heat boilers.
Preferably, the gas turbine generator set and the exhaust-heat boiler are both arranged into two sets, and one set corresponds to one set of the exhaust-heat boiler.
Preferably, the straight condensing machine is connected with a straight condensing machine control part which is used for reducing the power generation power of the straight condensing machine when the heat supply network load demand is increased and increasing the power generation power of the straight condensing machine when the heat supply network load demand is reduced.
Compared with the prior art, the utility model provides a distributed energy power station system includes a plurality of gas turbine generating sets, a plurality of exhaust-heat boiler, back of the body press and pure machine of congealing.
After the gas is used for acting in the gas turbine generator set to generate power, the waste heat generated by the gas turbine generator set enters the waste heat boiler through the flue to generate high-pressure steam and low-pressure steam. All the high-pressure steam of the waste heat boiler is introduced into the back pressure machine through the high-pressure connecting main pipe, and all the low-pressure steam of the waste heat boiler is introduced into the low-pressure connecting main pipe; and a steam outlet valve is arranged between a steam outlet of the back pressure machine and the low-pressure communication main pipe, and high-pressure steam is introduced into the low-pressure communication main pipe after being processed by the back pressure machine.
The low-pressure communication main pipe is provided with a first steam outlet end and a second steam outlet end, the first steam outlet end is connected with the straight condensing machine through a low-pressure valve, and the second steam outlet end is connected with a heat supply pipeline through a heat supply valve.
This distributed energy power station system can provide the supporting lectotype scheme of multiple power station main part through the communication state of adjusting the female pipe of high pressure liaison, the female pipe of low pressure liaison with its jointing equipment, and then provides multiple external energy supply mode.
When the distributed energy power station system is in a power supply peak shaving working condition, the heat supply valve is closed; all the high-pressure steam of the waste heat boiler enters a backpressure machine to do work and generate electricity; steam exhausted by the backpressure machine enters the low-pressure connection main pipe through a steam outlet valve, low-pressure steam of all waste heat boilers enters the low-pressure connection main pipe, and the two paths of steam are mixed and then enter the straight condensing machine to do work for power generation.
When the distributed energy power station system is in a heat supply peak regulation working condition, the low-pressure valve is closed, the steam exhaust port valve is opened, and the heat supply valve is opened; all the high-pressure steam of the waste heat boiler enters a backpressure machine to do work and generate electricity; the female pipe of backpressure machine exhaust steam entering low pressure liaison, whole exhaust-heat boiler's low pressure steam also gets into the female pipe of low pressure liaison, and the mixed steam in the female pipe of low pressure liaison gets into the heat supply pipeline through the heat supply valve, reaches external heat supply summit.
When the distributed energy power station system is in a combined heat and power flexible peak regulation working condition, the low-pressure valve and the heat supply valve are kept at a certain opening degree, and the steam exhaust port valve 33 is fully opened; all the high-pressure steam of the waste heat boiler enters a backpressure machine to do work; the steam that the backpressure machine was discharged gets into the female pipe of low pressure contact, and whole exhaust-heat boiler's low pressure steam also gets into the female pipe of low pressure contact, and the mixed steam in the female pipe of low pressure contact partly gets into the pure machine of condensing to do work and generate electricity through the low pressure valve, and another part is through the heat supply valve heat supply to the outside.
Any external energy supply mode can be under the peak regulation working condition of its heat supply power supply of priority assurance, guarantees exhaust-heat boiler, back of the body press and pure congeals the machine and operates at economic load safety and stability all the time simultaneously, realizes the maximize that the energy ladder utilized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first distributed energy power station system according to an embodiment of the present invention;
fig. 2 is a schematic thermodynamic system diagram of a second distributed energy power station system according to an embodiment of the present invention.
The system comprises a waste heat boiler 1, a high-pressure connection main pipe 2, a linkage valve 21, a high-side temperature and pressure reducing valve 22, a back pressure machine 3, a back pressure machine 31, a back pressure machine main steam valve 32, a back pressure machine regulating valve 33, a steam outlet valve 4, a low-pressure connection main pipe 41, a low-side temperature and pressure reducing valve 5, a straight condenser 51, a low-pressure valve 52, a straight condenser main steam valve 53, a straight condenser regulating valve 6, a heat supply pipeline 61, a heat supply valve 7, a condenser 8, a control valve 9, a temperature reducing water inlet and a gas turbine generator set 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a first distributed energy power station system according to an embodiment of the present invention; fig. 2 is a schematic thermodynamic system diagram of a second distributed energy power station system according to an embodiment of the present invention.
The utility model provides a distributed energy power station system, which comprises a plurality of gas turbine generator sets 10, a plurality of waste heat boilers 1, a back pressure machine 3 and a straight condensing machine 5; the high-pressure steam outlets of all the waste heat boilers 1 are communicated with the back pressure machine 3 through a high-pressure communication main pipe 2, and the low-pressure steam outlets of all the waste heat boilers 1 are communicated with the straight condensing machine 5 through a low-pressure communication main pipe 4.
The number of gas turbine generator sets 10 may be equal to the number of waste heat boilers 1. A gas turbine generator set 10 is correspondingly connected with a waste heat boiler 1, after gas does work in the gas turbine generator set 10 to generate electricity, waste heat generated by the gas turbine generator set 10 enters the waste heat boiler 1 through a flue to generate steam (including high-pressure steam and low-pressure steam).
The steam outlet of the back press 3 is connected with the low-pressure communication main pipe 4 through a steam outlet valve 33, high-pressure steam enters the back press 3 to do work and is used for supplying power to users, and the steam discharged after doing work enters the low-pressure communication main pipe 4 and is mixed with the low-pressure steam of all the waste heat boilers 1.
The low-pressure communication main pipe 4 is provided with a first steam outlet end and a second steam outlet end; the first steam outlet end is communicated with the straight condensing machine 5, the first steam outlet end is connected with the straight condensing machine 5 and is provided with a low-pressure valve 51, and when the low-pressure valve 51 is opened, mixed steam in the low-pressure communication main pipe 4 enters the straight condensing machine 5 to do work and is used for supplying power to a user; the second goes out vapour end and heat supply pipeline 6 intercommunication, and the second goes out vapour end and is connected with heat supply pipeline 6 and be equipped with heat supply valve 61, and when heat supply valve 61 was opened, the mixed steam in the female pipe 4 of low pressure liaison got into heat supply pipeline 6 for heat supply to the user.
Under normal operating condition, this distributed energy power station system includes three kinds of operating modes: firstly, a power supply peak regulation working condition; secondly, heating peak regulation working condition; thirdly, the combined heat and power supply is used for flexibly adjusting the peak condition.
Aiming at the peak regulation working condition of power supply, the heat supply valve 61 of the distributed energy power station system is closed, and the high-pressure connection main pipe 2, the low-pressure connection main pipe 4, the low-pressure valve 51 and the steam outlet valve 33 are all in a communicated state. High-pressure steam of all waste heat boilers 1 enters a backpressure machine 3 through a high-pressure communication main pipe 2 to do work and generate power, steam discharged from the backpressure machine 3 enters a low-pressure communication main pipe 4 through a steam outlet valve 33, low-pressure steam of all waste heat boilers 1 also enters the low-pressure communication main pipe 4, and the two paths of steam are mixed and then enter a straight condenser 5 to do work and generate power.
Aiming at the peak regulation working condition of heat supply, the low-pressure valve 51 of the distributed energy power station system is closed, the steam outlet valve 33 is opened, and the high-pressure connection main pipe 2, the low-pressure connection main pipe 4 and the heat supply valve 61 are all in a communicated state. All the high-pressure steam of the waste heat boiler 1 enters a back press 3 to do work and generate power; the steam that 3 exhaust backs the press gets into female pipe 4 of low pressure liaison, and the low pressure steam of whole exhaust-heat boiler 1 also gets into female pipe 4 of low pressure liaison, and aforementioned two way steam mixes the back and gets into heat supply pipeline 6 through heat supply valve 61, reaches external heat supply peak.
Aiming at the working condition of the combined heat and power supply and flexible peak regulation, a low-pressure valve 51 and a heat supply valve 61 of the distributed energy power station system are kept at a certain opening degree, and a steam outlet valve 33 is fully opened; all the high-pressure steam of the waste heat boiler 1 enters a back press 3 to do work; steam discharged by the back press 3 enters the low-pressure connection main pipe 4, low-pressure steam of all the waste heat boilers 1 also enters the low-pressure connection main pipe 4, one part of the mixed two paths of steam enters the straight condenser 5 through the low-pressure valve 51 to do work and generate power, and the other part of the mixed two paths of steam enters the heat supply pipeline 6 through the heat supply valve 61 to supply heat to the outside. And adjusting the opening degree of one or more of the low-pressure valve 51 and the heat supply valve 61 according to the specific demand of the cogeneration, thereby adjusting the power generation condition of the straight condenser 5 and the heat supply condition of the heat supply pipeline 6.
To sum up, above-mentioned distributed energy power station system realizes multiple energy supply mode through the state of adjusting each valve and backpressure machine 3, pure congeal machine 5 and heat supply pipeline 6's state, and any external energy supply mode all can guarantee under its heat supply power peak regulation operating mode separately in priority, guarantees exhaust-heat boiler 1, backpressure machine 3 and pure congeals machine 5 and operates at economic load safety and stability all the time simultaneously, realizes the maximize that the energy ladder utilized.
The distributed energy power station system provided by the present invention will be further described with reference to the accompanying drawings and embodiments.
In order to improve the reliability of the distributed energy power station system, the distributed energy power station system further comprises a linkage valve 21 arranged between any high-pressure steam outlet and the low-pressure communication main pipe 4.
When the back pressure machine 3 is out of operation due to faults or other reasons, the linkage valve 21 is automatically switched on, so that all high-pressure steam in the waste heat boiler 1 enters the low-pressure communication main pipe 4 and is used for the straight condensing machine 5 to apply work to generate power and/or supply heat to the heat supply pipeline 6. Normally, the high-pressure steam in the waste heat boiler 1 needs to be reduced in temperature and pressure before entering the low-pressure communication main pipe 4. The related equipment and operation for reducing temperature and pressure can refer to the prior art.
As shown in fig. 2, the heat supply pipeline 6 is further provided with a desuperheating water inlet 9 for introducing desuperheating water, thereby adjusting the temperature of steam in the heat supply pipeline 6.
The distributed energy power station system can effectively cope with the special working state of the back press machine 3 or the straight condenser 5, and improves the flexibility, safety and stability of adjustment of the system.
For better technical effect, on the basis of the above embodiment, the third steam outlet end of the low-pressure communication main pipe 4 is connected with the condenser 7 through the low-bypass temperature and pressure reducing valve 41; a high bypass temperature and pressure reducing valve 22 is arranged between any linkage valve 21 and the low pressure communication main pipe 4. Wherein, the condenser 7 is also connected with the exhaust steam port of the straight condenser 5.
When the back pressure machine 3 quits from operation, the linkage valve 21 is communicated with the high-pressure steam outlet and the low-pressure communication main pipe 4, at the moment, the high-side temperature-reducing and pressure-reducing valve 22 can automatically adjust the steam pressure and the steam temperature of the high-pressure steam entering the low-pressure communication main pipe 4, so that the normal work-applying power generation of the straight condenser 5 is realized by the steam entering the straight condenser 5 through the low-pressure communication main pipe 4, and/or the normal transportation of the steam entering the heat supply pipeline 6 through the low-pressure communication main pipe 4.
In the process, the condenser 7 is mainly used for recovering exhaust steam generated when the straight condenser 5 runs, a small part of steam in the low-pressure connecting main pipe 4 can also enter the condenser 7, and the low-side temperature and pressure reducing valve 41 can automatically adjust the steam pressure and the steam temperature entering the condenser 7, so that the safe running of the condenser 7 is ensured.
Further, the linkage valve 21 includes a plurality of first linkage valves and a second linkage valve; the first linkage valves are respectively arranged between any high-pressure steam outlet and the high-side temperature and pressure reducing valve 22, and the second linkage valves are arranged between the high-side temperature and pressure reducing valve 22 and the low-pressure communication main pipe 4. For example, the waste heat boilers 1 are two, the high-pressure steam outlets of the two waste heat boilers 1 are connected with the low-pressure communication main pipe 4, the pipeline at any high-pressure steam outlet is provided with a first linkage valve, the two pipelines are connected with the low-pressure communication main pipe 4 after being converged, and the converged pipeline is provided with the high-side temperature and pressure reducing valve 22 and the second linkage valve.
The application provides a distributed energy power station system's arbitrary high pressure steam goes out the steam port and is equipped with control valve 8 between the female pipe 2 of high pressure liaison for switch on and break off exhaust-heat boiler 1's high pressure steam goes out the steam port and the female pipe 2 of high pressure liaison. Similarly, a control valve 8 is arranged between any low-pressure steam outlet and the low-pressure connection main pipe 4 and used for connecting and disconnecting the low-pressure steam outlet of the waste heat boiler 1 and the low-pressure connection main pipe 4.
Illustratively, two control valves 8 are arranged between any high-pressure steam outlet and the high-pressure communication main pipe 2, and the two control valves 8 are connected in series, so that the operation safety and the reliability are improved.
A main steam valve 31 of a back pressure machine and an adjusting valve 32 of the back pressure machine are further arranged between the high-pressure connection main pipe 2 of the distributed energy power station system and the back pressure machine 3. The main steam valve 31 of the back pressure machine and the regulating valve 32 of the back pressure machine are connected in series, and usually, the main steam valve 31 of the back pressure machine is disposed on the side close to the high-pressure communication main pipe 2, and the regulating valve 32 of the back pressure machine is disposed on the side close to the back pressure machine 3.
Correspondingly, a main steam valve 52 of the straight condenser and an adjusting valve 53 of the straight condenser are arranged between the low-pressure communication main pipe 4 and the straight condenser 5. The main steam valve 52 of the straight condensing unit and the regulating valve 53 of the straight condensing unit are connected in series, generally, the main steam valve 52 of the straight condensing unit is arranged at one side close to the low-pressure communication main pipe 4, and the regulating valve 53 of the straight condensing unit is arranged at one side close to the straight condensing unit 5.
The main steam valve 31 of the back pressure machine and the regulating valve 32 of the back pressure machine are used for regulating the power generation power of the back pressure machine 3, and the main steam valve 52 of the straight condensing machine and the regulating valve 53 of the straight condensing machine are used for regulating the power generation power of the straight condensing machine 5, so that the distributed energy power station system can be flexibly regulated under the working condition of the combined heat and power flexible peak regulation.
The utility model provides a distributed energy power station system's exhaust-heat boiler 1 can set up to two, and two exhaust-heat boiler 1's high pressure steam goes out the steam port and all connects in back of the body press 3 through the female pipe 2 of high pressure liaison, and two exhaust-heat boiler 1's low pressure steam goes out the steam port and all connects in pure congealing machine 5 and heat supply pipeline 6 through the female pipe 4 of low pressure liaison. Correspondingly, two gas turbine generator sets 10 may be provided, and the two gas turbine generator sets 10 correspond to the two exhaust heat boilers 1, respectively.
For convenient regulation, the utility model provides a distributed energy power station system still is equipped with pure machine of congealing control division, and pure machine of congealing control division is connected with pure machine of congealing 5 for adjust the generating power of pure machine of congealing 5. Specifically, when the load demand of the heat supply network increases, the coagulating machine control part reduces the power generation power of the coagulating machine 5; when the heat supply network load demand decreases, the coagulating machine control section increases the generated power of the coagulating machine 5.
It is right above that the utility model provides a distributed energy power station system has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (9)
1. A distributed energy power station system comprises a plurality of gas turbine generator sets (10) and a plurality of waste heat boilers (1) connected with the gas turbine generator sets (10), and is characterized in that high-pressure steam outlets of all the waste heat boilers (1) are connected to a back press machine (3) through high-pressure connection main pipes (2); the low-pressure steam outlets of all the waste heat boilers (1) are connected with the steam inlet end of the low-pressure communication main pipe (4);
the first steam outlet end of the low-pressure communication main pipe (4) is connected with the straight condensing machine (5) through a low-pressure valve (51); the second steam outlet end of the low-pressure communication main pipe (4) is connected to a heat supply pipeline (6) through a heat supply valve (61); and a steam outlet of the back press (3) is connected to the steam inlet end of the low-pressure communication main pipe (4) through a steam outlet valve (33).
2. The distributed energy power plant system as claimed in claim 1, wherein a linkage valve (21) for automatic linkage is arranged between any high-pressure steam outlet and the low-pressure communication main pipe (4) when the back press (3) is out of operation.
3. The distributed energy power station system according to claim 2, characterized in that a condenser (7) is connected to a third steam outlet end of the low-pressure communication main pipe (4), and a low-side temperature and pressure reducing valve (41) which is automatically adjusted to realize temperature and pressure reduction is arranged between the third steam outlet end and the condenser (7);
a high bypass temperature and pressure reducing valve (22) used for automatically adjusting to realize temperature and pressure reduction when the back press (3) quits operation is arranged between any linkage valve (21) and the low-pressure communication main pipe (4).
4. A distributed energy power plant system according to claim 3, characterized in that all of said linkage valves (21) comprise a plurality of first linkage valves respectively arranged between any of said high pressure steam outlets and said high bypass pressure and temperature reducing valve (22) and a second linkage valve arranged between said high bypass pressure and temperature reducing valve (22) and said low pressure communication main (4).
5. The distributed energy power plant system as claimed in any of claims 1 to 4, wherein a control valve (8) is arranged between any high-pressure steam outlet and the high-pressure communication main pipe (2) and between any low-pressure steam outlet and the low-pressure communication main pipe (4).
6. A distributed energy power plant system according to claim 5, characterized in that two control valves (8) are arranged in series between any of the high pressure steam outlets and the high pressure connection header (2).
7. The distributed energy power plant system of claim 5,
a backpressure machine main steam valve (31) and a backpressure machine adjusting valve (32) are arranged between the high-pressure communication main pipe (2) and the backpressure machine (3) in series;
a main steam valve (52) of the straight condenser and an adjusting valve (53) of the straight condenser are arranged between the low-pressure communication main pipe (4) and the straight condenser (5) in series.
8. The distributed energy power plant system according to claim 5, characterized in that the gas turbine generator set (10) and the waste heat boiler (1) are provided in two, and one gas turbine generator set (10) corresponds to one waste heat boiler (1).
9. The distributed energy power plant system according to claim 5, characterized in that the straight condenser (5) is connected with a straight condenser control for reducing the generated power of the straight condenser (5) when the heat supply network load demand increases and for increasing the generated power of the straight condenser (5) when the heat supply network load demand decreases.
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| CN201921897902.4U CN210738682U (en) | 2019-11-05 | 2019-11-05 | Distributed energy power station system |
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| CN201921897902.4U CN210738682U (en) | 2019-11-05 | 2019-11-05 | Distributed energy power station system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671206A (en) * | 2019-11-05 | 2020-01-10 | 华润电力郑州航空港智慧能源有限公司 | Distributed energy power station system and energy cascade utilization method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671206A (en) * | 2019-11-05 | 2020-01-10 | 华润电力郑州航空港智慧能源有限公司 | Distributed energy power station system and energy cascade utilization method |
| CN110671206B (en) * | 2019-11-05 | 2024-08-13 | 华润电力郑州航空港智慧能源有限公司 | Distributed energy power station system and energy cascade utilization method |
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