CN209994117U - Energy storage system - Google Patents
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- CN209994117U CN209994117U CN201920860869.1U CN201920860869U CN209994117U CN 209994117 U CN209994117 U CN 209994117U CN 201920860869 U CN201920860869 U CN 201920860869U CN 209994117 U CN209994117 U CN 209994117U
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Abstract
The utility model discloses an energy storage system, include: the system comprises a first generator, a second generator, a first plant transformer, a second plant transformer, a first switch, a first energy storage module, a second switch, a second energy storage module and a third switch; the first switch is used for controlling the first energy storage module to assist the first generator to supply power; the second switch is used for controlling the second energy storage module to assist the second generator to supply power; the first end of the third switch is connected with the output end of the first energy storage module, the second end of the third switch is connected with the output end of the second energy storage module, and the third switch is used for controlling the first energy storage module and the second energy storage module to assist at least one of the first generator and the second generator in supplying power. Through the technical scheme, the energy storage module can be used for calling more than two units simultaneously or respectively, and the utilization rate of the energy storage system is improved.
Description
Technical Field
The embodiment of the utility model provides an relate to energy storage technical field, especially relate to an energy storage system.
Background
In recent years, new energy power generation technology is rapidly developed and more widely applied. In the existing electric power energy storage system, each thermal generator set is provided with an independent energy storage module, namely, all power of the energy storage module can only be input into a certain set to carry out combined frequency modulation. Because one set of energy storage module can only provide service for one unit, under the condition that two or more units are dispatched by a power grid at the same time, the requirements of power supply and frequency modulation cannot be met, the utilization rate of an energy storage system is low, and the cost performance is not high.
SUMMERY OF THE UTILITY MODEL
The utility model provides an energy storage system to realize that one set of energy storage module supplies two above units simultaneously or call respectively, improve energy storage system's utilization ratio.
The embodiment of the utility model provides a pair of energy storage system, include:
the system comprises a first generator, a second generator, a first plant transformer, a second plant transformer, a first switch, a first energy storage module, a second switch, a second energy storage module and a third switch;
the first end of the first plant transformer is connected with the first end of the first generator, the first end of the first switch is connected with the second end of the first plant transformer, the second end of the first switch is connected with the output end of the first energy storage module, and the first switch is used for controlling the first energy storage module to assist the first generator in supplying power;
the first end of the second plant transformer is connected with the first end of the second generator, the first end of the second switch is connected with the second end of the second plant transformer, the second end of the second switch is connected with the output end of the second energy storage module, and the second switch is used for controlling the second energy storage module to assist the second generator in supplying power;
the first end of the third switch is connected with the output end of the first energy storage module, the second end of the third switch is connected with the output end of the second energy storage module, and the third switch is used for controlling the first energy storage module and the second energy storage module to assist at least one of the first generator and the second generator in supplying power.
Furthermore, when the first switch and the second switch are simultaneously turned on, the third switch is turned off; when the third switch is turned on, one of the first switch and the second switch is turned on.
Further, the system further comprises: the energy storage device comprises a third energy storage module, a fourth switch, a fifth switch and a sixth switch;
the first end of the fourth switch is connected with the second end of the first plant transformer, the second end of the fourth switch is connected with the output end of the third energy storage module, and the fourth switch is used for controlling the third energy storage module to assist the first generator in supplying power;
the first end of the fifth switch is connected with the second end of the second plant transformer, the second end of the fifth switch is connected with the output end of the fourth energy storage module, and the fifth switch is used for controlling the fourth energy storage module to assist the second generator in supplying power;
the first end of the sixth switch is connected with the output end of the third energy storage module, the second end of the sixth switch is connected with the output end of the fourth energy storage module, and the sixth switch is used for controlling the third energy storage module and the fourth energy storage module to assist at least one of the first generator and the second generator to supply power.
Furthermore, when the fourth switch and the fifth switch are simultaneously switched on, the sixth switch is switched off; when the sixth switch is turned on, one of the fourth switch and the fifth switch is turned on.
Further, the system further comprises: a first main transformer and a second main transformer;
the input end of the first main transformer is respectively connected with the first end of the first plant transformer and the first end of the first generator, and the output end of the first main transformer is used for outputting electric energy to a power grid;
the input end of the second main transformer is respectively connected with the first end of the second plant transformer and the first end of the second generator, and the output end of the second main transformer is used for outputting electric energy to the power grid.
Further, the system further comprises: a first energy management module;
the first energy management module is respectively connected with the first switch, the second switch and the third switch, and is used for monitoring the working states of the first switch, the second switch and the third switch and carrying out automatic power generation control according to the working states.
Further, the system further comprises: a second energy management module;
the second energy management module is respectively connected with the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch, and is used for monitoring the working states of the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch and carrying out automatic power generation control according to the working states.
Further, the system further comprises: a monitoring module;
the monitoring module is connected with the energy management module and is used for monitoring the real-time running state of the system.
An embodiment of the utility model provides an energy storage system, include: the system comprises a first generator, a second generator, a first plant transformer, a second plant transformer, a first switch, a first energy storage module, a second switch, a second energy storage module and a third switch; the first switch is used for controlling the first energy storage module to assist the first generator to supply power; the second switch is used for controlling the second energy storage module to assist the second generator to supply power; the first end of the third switch is connected with the output end of the first energy storage module, the second end of the third switch is connected with the output end of the second energy storage module, and the third switch is used for controlling the first energy storage module and the second energy storage module to assist at least one of the first generator and the second generator in supplying power. Through the technical scheme, the energy storage module can be used for calling more than two units simultaneously or respectively, and the utilization rate of the energy storage system is improved.
Drawings
Fig. 1 is a schematic view of an energy storage system according to a first embodiment of the present invention;
fig. 2 is a schematic diagram of an energy storage system according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of an application scenario of an energy storage system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic view of an energy storage system according to an embodiment of the present invention. The embodiment can be suitable for the condition that one set of energy storage module is controlled by one PLC system in the generator set to supply more than two generator sets to call.
Referring to fig. 1, the energy storage system includes: the system comprises a first generator G1, a second generator G2, a first plant transformer T1, a second plant transformer T2, a first switch K1, a first energy storage module E1, a second switch K2, a second energy storage module E2 and a third switch K3; a first end a1 of a first plant transformer T1 is connected with a first end a3 of a first generator G1, a first end a4 of a first switch K1 is connected with a second end a2 of a first plant transformer T1, a second end a5 of the first switch K1 is connected with an output end a6 of a first energy storage module E1, and the first switch K1 is used for controlling the first energy storage module E1 to assist the first generator G1 in supplying power; a first end b1 of the second plant transformer T2 is connected with a first end b3 of a second generator G2, a first end b4 of a second switch K2 is connected with a second end b2 of a second plant transformer T2, a second end b5 of the second switch K2 is connected with an output end a7 of the second energy storage module E2, and the second switch K2 is used for controlling the second energy storage module E2 to assist the second generator G2 in supplying power; the first end c1 of the third switch K3 is connected with the output end a6 of the first energy storage module E1, the second end c2 of the third switch K3 is connected with the output end a7 of the second energy storage module E2, and the third switch K3 is used for controlling the first energy storage module E1 and the second energy storage module E2 to assist at least one of the first generator G1 and the second generator G2 in supplying power.
Specifically, the number of the generator sets is at least two, the first generator G1 and the second generator G2 are used for converting energy in other forms into electric energy, the first plant transformer T1 and the second plant transformer T2 are used for supplying power to the power plant when the generator sets normally operate, and each generator corresponds to one plant transformer. The first plant transformer T1 and the second plant transformer T2 may be double-winding transformers or triple-winding transformers to meet different requirements of load voltage classes. The first energy storage module E1 and the second energy storage module E2 are energy conversion and storage devices, and use the energy stored therein to assist the corresponding generator to supply power when needed, and use the grid-connected power of the energy storage modules and the generator to meet the requirement of power grid dispatching. The functions of reactive compensation, smooth grid-connected power and the like are achieved for power grid dispatching.
The first switch K1, the second switch K2 and the third switch K3 may be relays, switch tubes and other devices, and are used for controlling each energy storage module to assist each generator to supply power. Under the condition that the first switch K1 is turned on, the first energy storage module E1 can be controlled to assist the first generator G1 to supply power; under the condition that the second switch K2 is conducted, the second energy storage module E2 can be controlled to assist the second generator G2 to supply power; the third switch K3 is a parallel switch between the first energy storage module E1 and the second energy storage module E2, and when the third switch K3 is turned on, the first energy storage module E1 and the second energy storage module E2 are connected in parallel, and simultaneously assist the first generator G1 or the second generator G2 to supply power.
Further, when the first switch K1 and the second switch K2 are turned on simultaneously, the third switch K3 is turned off; when the third switch K3 is turned on, one of the first switch K1 and the second switch K2 is turned on.
Specifically, under the condition that the first switch K1 and the second switch K2 are simultaneously turned on, the first energy storage module E1 assists the first generator G1 in supplying power, the second energy storage module E2 assists the second generator G2 in supplying power, and at this time, the third switch K3 is turned off to avoid that the two energy storage modules are connected in parallel to cause power supply with different generators to be uncoordinated. Under the condition that the third switch K3 is turned on, the two energy storage modules are connected in parallel, and can assist the first generator G1 to supply power at the same time, or assist the second generator G2 to supply power at the same time, specifically: when the third switch K3 and the first switch K1 are turned on, the first energy storage module E1 and the second energy storage module E2 assist the first generator G1 to supply power at the same time; when the third switch K3 and the second switch K2 are turned on, the first energy storage module E1 and the second energy storage module E2 assist the second generator G2 to supply power at the same time.
Further, the system further comprises: a first energy management module (not shown); the first energy management module is respectively connected with the first switch K1, the second switch K2 and the third switch K3, and is used for monitoring the working states of the first switch K1, the second switch K2 and the third switch K3 and carrying out automatic power generation control according to the working states.
Specifically, the first Energy Management module refers to an Energy Management System (EMS), which includes various types of software And hardware in the power grid dispatching automation System, And is used for Data Acquisition And monitoring (SCADA), Automatic power generation Control (AGC), planning, network application analysis, And the like in the power generation process. The first energy management module is respectively connected with the first switch K1, the second switch K2 and the third switch K3 and is used for monitoring the working states of the first switch K1, the second switch K2 and the third switch K3, determining the power supply state of each power generator by each energy storage module according to the conduction or non-conduction of the first switch K1, the second switch K2 and the third switch K3, and performing automatic power generation control according to the power supply state, wherein the automatic power generation control refers to sending an instruction to a related power plant or machine set according to a control target of a power grid dispatching center, and the automatic control of the power of each power generator is realized through an automatic control and adjustment device of the power plant or machine set.
The energy storage system that this embodiment provided, through first switch, at least one power supply in first energy storage module of second energy storage module and the supplementary first generator of second energy storage module of second switch and third switch control, make one set of energy storage module supply more than two units to call simultaneously or respectively, realized that one set of energy storage module is to the different combination power supply states of many generating sets, improved energy storage module's utilization ratio, promoted generating set's operating efficiency, saved supporting resource and improved energy storage system's utilization ratio.
Example two
Fig. 2 is a schematic diagram of an energy storage system according to an embodiment of the present invention. The embodiment is optimized on the basis of the above embodiment, and exemplarily four energy storage modules in the energy storage system are set, and the functions of the energy storage system are realized by combining the second energy management module, the monitoring module and the like.
With reference to fig. 2, on the basis of the above embodiment, the system further includes: a third energy storage module E3, a fourth energy storage module E4, a fourth switch K4, a fifth switch K5 and a sixth switch K6; a first end a8 of the fourth switch K4 is connected with a second end a21 of the first plant transformer T1, a second end a9 of the fourth switch K4 is connected with an output end b6 of the third energy storage module E3, and the fourth switch K4 is used for controlling the third energy storage module E3 to assist the first generator G1 in supplying power; a first end b9 of the fifth switch K5 is connected with a second end b21 of the second plant transformer T2, a second end b8 of the fifth switch K5 is connected with an output end b7 of the fourth energy storage module E4, and the fifth switch K5 is used for controlling the fourth energy storage module E4 to assist the second generator G2 to supply power; the first end d1 of the sixth switch K6 is connected to the output end b6 of the third energy storage module E3, the second end d2 of the sixth switch K6 is connected to the output end b7 of the fourth energy storage module E4, and the sixth switch K6 is used for controlling the third energy storage module E3 and the fourth energy storage module E4 to assist at least one of the first generator G1 and the second generator G2 in supplying power.
Specifically, the third energy storage module E3 and the fourth energy storage module E4 are energy conversion and storage devices. The fourth switch K4, the fifth switch K5 and the sixth switch K6 are used for controlling the third energy storage module E3 and the fourth energy storage module E4 to assist the power supply of the generator. Under the condition that the fourth switch K4 is switched on, the third energy storage module E3 can be controlled to assist the first generator G1 to supply power; under the condition that the fifth switch K5 is conducted, the fourth energy storage module E4 can be controlled to assist the second generator G2 to supply power; the sixth switch K6 is a parallel switch between the third energy storage module E3 and the fourth energy storage module E4, and when the sixth switch K6 is turned on, the third energy storage module E3 and the fourth energy storage module E4 are connected in parallel, and assist the first generator G1 or the second generator G2 to supply power.
Further, when the fourth switch K4 and the fifth switch K5 are turned on simultaneously, the sixth switch K6 is turned off; when the sixth switch K6 is turned on, one of the fourth switch K4 and the fifth switch K5 is turned on.
Specifically, under the condition that the fourth switch K4 and the fifth switch K5 are simultaneously turned on, the third energy storage module E3 assists the first generator G1 in supplying power, the fourth energy storage module E4 assists the second generator G2 in supplying power, and at the moment, the sixth switch K6 is turned off to avoid that the two energy storage modules are connected in parallel to cause power supply with different generators to be uncoordinated. Under the condition that the sixth switch K6 is turned on, the third energy storage module E3 and the fourth energy storage module E4 are connected in parallel, and may assist the first generator G1 to supply power at the same time, or supply power to the second generator G2 at the same time, specifically: when the sixth switch K6 and the fourth switch K4 are turned on, the third energy storage module E3 and the fourth energy storage module E4 assist the first generator G1 to supply power at the same time; when the sixth switch K6 and the fifth switch K5 are turned on, the third energy storage module E3 and the fourth energy storage module E4 simultaneously assist the second generator G2 in supplying power.
Table 1 is a mapping relationship table of the switch on state and the energy storage system operating state. As shown in table 1, the operation states of the energy storage system include dual-machine operation and single-machine operation, wherein under the dual-machine operation, both the two machines can be used as output machines, and if the first switch K1 and the fourth switch K4 are turned on, the first energy storage module E1 and the third energy storage module E3 assist the first generator G1 in supplying power; if the second switch K2 and the fifth switch K5 are turned on, the second energy storage module E2 and the fourth energy storage module E4 assist the second generator G2 to supply power, and at this time, the third switch K3 and the sixth switch K6 are turned off and are not allowed to be turned on, so as to avoid the situation that the energy storage modules are connected in parallel to cause incompatibility. Under the condition of single machine operation, if the first switch K1 and the fourth switch K4 are turned on, the second switch K2 and the fifth switch K5 are turned off, and the third switch K3 and the sixth switch K6 are turned on, the four energy storage modules assist the first generator G1 to supply power; if the first switch K1 and the fourth switch K4 are turned off, the second switch K2 and the fifth switch K5 are turned on, and the third switch K3 and the sixth switch K6 are turned on, the four energy storage modules assist the second generator G2 to supply power. Through a plurality of switch combination intelligent control, realized that one set of energy storage module supplies many generating sets to call.
TABLE 1 mapping relationship table of switch on state and energy storage system running state
It should be noted that table 1 exemplarily shows common operation states of the generator set, and in practical applications, the on or off states of the switches are different, and other operation states may also occur, for example, in case of a stand-alone operation, if the first switch K1, the third switch K3, and the fourth switch K4 are turned on, and the second switch K2, the sixth switch K6, and the fifth switch K5 are turned off, the first energy storage module E1, the second energy storage module E2, and the third energy storage module E3 assist the power supply of the first generator G1; if the first switch K1 and the fourth switch K4 are turned on, the second switch K2 and the fifth switch K5 are turned off, and the third switch K3 and the sixth switch K6 are turned off, the first energy storage module E1 and the third energy storage module E3 assist the first generator G1 in supplying power and the like.
Further, the system further comprises: a first main transformer T10 and a second main transformer T20; an input end c3 of a first main transformer T10 is respectively connected with a first end A1 end a1 of a first plant transformer T1 and a first end A3 of a first generator G1, and an output end c4 of the first main transformer T10 is used for outputting electric energy to a power grid; an input end d3 of the second main transformer T20 is connected with a first end b1 of the second plant transformer T2 and a first end b3 of the second generator G2, respectively, and an output end d4 of the second main transformer T20 is used for outputting electric energy to the power grid.
Specifically, the first main transformer T10 and the second main transformer T20 correspond to two Generator sets, respectively, and electricity generated by the Generator can be connected to a power grid through a main transformer (GSU) to output electric energy to the power grid.
Further, the system further comprises: a second energy management module (not shown); the second energy management module is respectively connected with the first switch K1, the second switch K2, the third switch K3, the fourth switch K4, the fifth switch K5 and the sixth switch K6, and is used for monitoring the working states of the first switch K1, the second switch K2, the third switch K3, the fourth switch K4, the fifth switch K5 and the sixth switch K6 and performing automatic power generation control according to the working states.
Specifically, the second energy management module is an EMS, and includes various types of software and hardware in the power grid dispatching automation system, and is used for realizing data acquisition and monitoring, automatic power generation control and planning, network application analysis and the like in the power generation process. The second energy management module is respectively connected with the first switch K1 to the sixth switch K6 and used for monitoring the working state of each switch, determining the power supply state of each energy storage module and each generator according to the conduction state of each switch, and accordingly performing automatic power generation control.
Further, the system further comprises: a monitoring module; the monitoring module is connected with the energy management module and used for monitoring the real-time running state of the system.
Specifically, the monitoring module comprises a computer, communication equipment, a measurement and control unit and the like, so that the functions of real-time data acquisition, on-off state monitoring, communication, remote control and the like of the running state of the energy storage system are realized. For example, the measurement and control unit monitors whether the temperature of the transformer exceeds a normal range, monitors the fault of the switching power supply, and performs event recording, system maintenance and the like. Furthermore, relevant data (such as data collected by the measurement and control unit, an automatic power generation control instruction, communication data and the like) of the real-time running state monitored by the monitoring module are uploaded to the cloud platform and backed up, so that management and checking are facilitated.
It should be noted that, in practical application, the energy storage system may also include more energy storage modules and generator sets, and the parallel switch is arranged at the output end of at least two energy storage modules, so that at least two energy storage modules can be controlled to simultaneously assist a certain generator set to supply power; the condition that multiple switches are combined and conducted exists by combining the switches between the energy storage modules and the plant transformer, and therefore the multiple energy storage modules can be used for multiple generator sets to be called simultaneously or respectively.
Further, the System further comprises a remote terminal Control System (RTU) and a Distributed Control System (DCS), wherein the energy management module is respectively connected with the remote terminal Control System and the DCS;
the remote terminal control system issues the plant-level automatic power generation control instruction to the energy management system, the energy management system determines the automatic power generation control instruction of the generator set according to the plant-level automatic power generation control instruction and determines the scheduling state of the generator set according to the automatic power generation control instruction of the generator set, and the generator set distributed control system adjusts the output power of the generator set according to the scheduling state so as to respond to the plant-level automatic power generation control instruction.
Specifically, after the remote terminal control system issues the plant-level AGC command to the energy management system, the AGC system in the energy management system distributes the plant-level AGC command to each generator set according to a certain distribution strategy, so that the AGC command of the generator set and the scheduling state of the generator set are determined; and the distributed control system of the generator set adjusts the output power of the auxiliary output unit of the energy storage module based on the dispatching state according to the AGC instruction of the generator set so as to realize frequency modulation and respond to the plant-level automatic power generation control instruction. The dispatching state comprises a single machine mode, an independent switching mode and a double-circuit switching mode, wherein the single machine mode means that only one generator set is used as an output unit; the single switching mode is to select one generator set as an output unit by controlling the switching state of each generator set, for example, select the first generator set as the output unit; the two-way switching mode is to select one or more generator sets as output sets by controlling the switching states of the switches of the generator sets, the switching states of the switches are different, and the corresponding output sets are also different, for example, a first set or a second set can be selected as the output sets, or the first set and the second set can be simultaneously used as the output sets. Therefore, frequency modulation of the first unit or the second unit is achieved, or frequency modulation of the first unit and the second unit is achieved simultaneously, and frequency modulation efficiency and flexibility are improved.
Fig. 3 is a schematic diagram of an application scenario of an energy storage system according to an embodiment of the present invention. As shown in the energy link in fig. 3, the energy storage module can be used for the first unit and the second unit to be called simultaneously or separately, the generator of each unit corresponds to a plant-level transformer for supplying power to the power plant, the generator and the plant-level transformer are connected to the main transformer simultaneously, and the electricity generated by the generator can be connected to the power grid through the main transformer to output electric energy to the power grid. The data communication process in the communication link specifically includes: the power grid dispatching sends an AGC instruction to an RTU of the power plant; and the RTU of the power plant transmits the plant-level AGC command to a plant-level AGC system, the plant-level AGC system distributes the plant-level AGC command to each generator set and sends the plant-level AGC command to the DCS of each generator set, and each generator set calls the energy storage system to perform frequency modulation according to the distributed AGC command. The AGC system is used for sending instructions to the corresponding units according to the expected control target of the power grid dispatching center, and the automatic control of the power of the generator is realized through the automatic control adjusting device of the power plant or the units, so that the frequency modulation is realized.
It should be noted that the first unit and the second unit share one set of energy storage module, and the parallel switch is arranged between different energy storage modules to realize that one set of energy storage module is used by more than two units at the same time. In the frequency modulation process, a main control unit of the energy storage module automatically controls an energy storage inverter (Power Conversion System, PCS) to charge and discharge the energy storage module according to AGC (automatic gain control) instructions forwarded by each unit DCS and by combining operation data of each unit DCS, and an RTU (remote terminal unit) or the unit DCS collects the Power of a grid-connected point of the energy storage module, and the Power is added with the unit Power to serve as an output feedback signal and is uploaded to a Power grid dispatching side so as to respond to a plant-level AGC (automatic gain control) instruction, so that the active Power and the reactive Power of a Power grid can be regulated, and the Power grid dispatching requirement can.
In the energy storage system provided by this embodiment, the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch are used for controlling the first energy storage module, the second energy storage module, the third energy storage module and the fourth energy storage module to assist at least one of the first generator and the second generator in supplying power, so that one set of energy storage modules is used by more than two sets simultaneously or respectively, different combined power supply states of the set of energy storage modules to multiple generator sets are realized, the utilization rate of the energy storage modules is improved, the operation efficiency of the generator sets is improved, supporting resources are saved, and the utilization rate of the energy storage system is improved; and the automatic power generation control, real-time monitoring and communication of the energy storage system are realized under the condition that one set of energy storage module is used by two units through the energy management module, the monitoring module, the cloud platform and the like.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (8)
1. An energy storage system, comprising: the system comprises a first generator, a second generator, a first plant transformer, a second plant transformer, a first switch, a first energy storage module, a second switch, a second energy storage module and a third switch;
the first end of the first plant transformer is connected with the first end of the first generator, the first end of the first switch is connected with the second end of the first plant transformer, the second end of the first switch is connected with the output end of the first energy storage module, and the first switch is used for controlling the first energy storage module to assist the first generator in supplying power;
the first end of the second plant transformer is connected with the first end of the second generator, the first end of the second switch is connected with the second end of the second plant transformer, the second end of the second switch is connected with the output end of the second energy storage module, and the second switch is used for controlling the second energy storage module to assist the second generator in supplying power;
the first end of the third switch is connected with the output end of the first energy storage module, the second end of the third switch is connected with the output end of the second energy storage module, and the third switch is used for controlling the first energy storage module and the second energy storage module to assist at least one of the first generator and the second generator in supplying power.
2. The system of claim 1, wherein when the first switch and the second switch are simultaneously on, the third switch is off; when the third switch is turned on, one of the first switch and the second switch is turned on.
3. The system of claim 1, further comprising: the energy storage device comprises a third energy storage module, a fourth switch, a fifth switch and a sixth switch;
the first end of the fourth switch is connected with the second end of the first plant transformer, the second end of the fourth switch is connected with the output end of the third energy storage module, and the fourth switch is used for controlling the third energy storage module to assist the first generator in supplying power;
the first end of the fifth switch is connected with the second end of the second plant transformer, the second end of the fifth switch is connected with the output end of the fourth energy storage module, and the fifth switch is used for controlling the fourth energy storage module to assist the second generator in supplying power;
the first end of the sixth switch is connected with the output end of the third energy storage module, the second end of the sixth switch is connected with the output end of the fourth energy storage module, and the sixth switch is used for controlling the third energy storage module and the fourth energy storage module to assist at least one of the first generator and the second generator to supply power.
4. The system of claim 3, wherein when the fourth switch and the fifth switch are simultaneously turned on, the sixth switch is turned off; when the sixth switch is turned on, one of the fourth switch and the fifth switch is turned on.
5. The system of claim 1, further comprising: a first main transformer and a second main transformer;
the input end of the first main transformer is respectively connected with the first end of the first plant transformer and the first end of the first generator, and the output end of the first main transformer is used for outputting electric energy to a power grid;
the input end of the second main transformer is respectively connected with the first end of the second plant transformer and the first end of the second generator, and the output end of the second main transformer is used for outputting electric energy to the power grid.
6. The system of claim 1, further comprising: a first energy management module;
the first energy management module is respectively connected with the first switch, the second switch and the third switch, and is used for monitoring the working states of the first switch, the second switch and the third switch and carrying out automatic power generation control according to the working states.
7. The system of claim 3, further comprising: a second energy management module;
the second energy management module is respectively connected with the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch, and is used for monitoring the working states of the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch and carrying out automatic power generation control according to the working states.
8. The system of claim 6, further comprising: a monitoring module;
the monitoring module is connected with the first energy management module and is used for monitoring the real-time running state of the system.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110112762A (en) * | 2019-06-10 | 2019-08-09 | 华润智慧能源有限公司 | A kind of energy-storage system |
| CN112787339A (en) * | 2020-12-31 | 2021-05-11 | 上海外高桥第三发电有限责任公司 | Auxiliary frequency modulation device of thermal power plant based on energy storage equipment and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112762A (en) * | 2019-06-10 | 2019-08-09 | 华润智慧能源有限公司 | A kind of energy-storage system |
| CN112787339A (en) * | 2020-12-31 | 2021-05-11 | 上海外高桥第三发电有限责任公司 | Auxiliary frequency modulation device of thermal power plant based on energy storage equipment and control method |
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