CN107834606A - Light stores up bavin micro-capacitance sensor electric power system and its control method - Google Patents

Abstract

The disclosure provides a power supply system for an optical-storage-firewood micro-grid and a control method thereof, which belong to the technical field of power generation control. The power supply system includes: a plurality of devices constituting a microgrid at the perception operation layer, a coordination stability control device at the coordination control layer, and an energy management device at the energy management layer. Among them, the coordinated and stable control device is connected with multiple devices, configured to obtain real-time operation data from multiple devices, and analyze them according to the energy management control instructions, so as to perform state switching and coordinated control of the devices at the perception operation layer; the energy management device and the coordination The stability control device is connected and configured to receive real-time operation data from the coordinated stability control device and perform optimal control, generate an energy management control instruction, and send the energy management control instruction to the coordinated stability control device. By generating energy management control instructions according to the real-time operation data of the equipment, intelligent scheduling and control of electric energy is carried out to achieve energy balance and rational application of the system.

Description

Photovoltaic-storage-diesel-diesel microgrid power supply system and its control method

technical field

The present disclosure relates to the technical field of power generation control, and in particular, to a power supply system for an optical-storage-firewood microgrid and a control method thereof.

Background technique

At present, in areas where the power supply network is difficult to cover or where the economy is underdeveloped and there is no power supply, the power supply of factories and enterprises is mainly provided by independent power generation equipment; especially for overseas factories and enterprises invested by China, many of them are located in third world countries. In areas where the supply is difficult or there is no electricity, in the face of the difficulty of using electricity, it is generally resolved by relying on diesel generators for power supply. The diesel generator set is mainly composed of diesel engine, sensor, speed controller, actuator, synchronous generator, reactive power compensation device and unit monitoring system. Its working principle is to first transmit the power torque output by the diesel engine to the synchronous generator through the mechanical transmission system. Generator, use the speed regulator to adjust the actual speed, so that the generator can generate stable electric energy.

Factories and enterprises in areas without electricity often have a relatively large load. According to specific projects, multiple diesel generator sets can be configured to run in parallel to form a power supply network for diesel generator sets. However, when the power supply system supplies power to the load and the load fluctuates greatly, the output torque of the diesel engine will be unbalanced with the electromagnetic torque of the generator, causing the speed of the diesel engine to fluctuate, and finally unstable voltage and frequency will be generated. In addition, compared with the large power grid, the capacity of diesel generator sets is relatively small. When there are a large number of reactive loads consuming reactive power in the load, more reactive power will be absorbed from the generator side, which will reduce the power factor , And then seriously affect the quality of power supply of diesel generator sets.

With the continuous advancement of new energy technologies, although new technologies such as wind power generation and solar power generation have emerged, these power generation technologies are intermittent and random, so new energy cannot solve the problem of factories and enterprises in areas without electricity alone. Power problem.

Therefore, the technical solutions in the prior art still have room for improvement.

It should be noted that the information disclosed in the above background section is only for enhancing the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art.

Contents of the invention

The purpose of the present disclosure is to provide a power supply system for optical storage and diesel fuel microgrid and its control method, so as to overcome at least to some extent the inability to provide reliable, stable and high-quality electricity for areas without electricity due to the limitations and defects of related technologies. Problem with power supply.

Other features and advantages of the present disclosure will become apparent from the following detailed description, or in part, be learned by practice of the present disclosure.

According to one aspect of the present disclosure, there is provided a power supply system for an optical-storage-firewood microgrid, including:

Multiple devices located in the sensing operation layer to form a microgrid;

The coordination and stability control device located at the coordination control layer is connected to the plurality of devices and is configured to obtain real-time operation data from the plurality of devices and analyze them according to the energy management control instructions, so as to control the devices at the perception operation layer state switching and coordination control; and

An energy management device located in the energy management layer, connected to the coordination and stability control device, configured to receive the real-time operation data from the coordination and stability control device and perform optimal control, generate the energy management control instruction, and convert the energy Supervisory control instructions are sent to said coordinated stability control means.

In an exemplary embodiment of the present disclosure, the multiple devices include:

a power supply unit configured to provide electrical energy to the microgrid, including solar photovoltaic panels and photovoltaic inverters;

An energy storage unit configured to store and balance electrical energy, including a battery module, a battery management system BMS and an energy storage bidirectional converter;

a power consumption unit configured to consume electrical energy, including an intelligent power distribution cabinet and a power consumption load; and

A diesel generator set configured to provide backup power to the microgrid.

In an exemplary embodiment of the present disclosure, the microgrid further includes an AC bus;

The solar photovoltaic panel is connected to the AC bus through the photovoltaic inverter;

The battery module is connected to the AC bus through the energy storage bidirectional converter;

The electric load is connected to the AC bus through the intelligent power distribution cabinet;

The diesel generator set is connected to the AC bus.

In an exemplary embodiment of the present disclosure, the battery module includes: a storage battery, a lithium battery and a super capacitor.

In an exemplary embodiment of the present disclosure, the battery management system BMS is connected between the storage battery and the energy storage bidirectional converter, and/or the battery management system BMS is connected to the lithium battery Between the energy storage bidirectional converter, the battery management system BMS is configured to control and protect the charging and discharging of the storage battery or the lithium battery.

In an exemplary embodiment of the present disclosure, the battery is a lead-carbon battery.

In an exemplary embodiment of the present disclosure, the photovoltaic inverter is configured to convert the direct current output by the solar photovoltaic panel into alternating current; the energy storage bidirectional converter is configured to convert the output of the battery module Converting the direct current to alternating current, and when the electricity output by the solar photovoltaic panel is greater than the electricity consumption of the electric load, converting the alternating current output by the AC bus bar into direct current and transmitting it to the energy storage unit.

In an exemplary embodiment of the present disclosure, the coordination control layer further includes:

A communication interface configured to communicate and connect the coordinated stability control device with the plurality of devices in the perception operation layer and the energy management device.

In an exemplary embodiment of the present disclosure, the energy management layer further includes:

The display terminal is connected with the energy management device and is configured to display the real-time operating parameters and the management strategy generated according to the optimization control.

According to the second aspect of the present disclosure, there is also provided a control method for an optical-storage-firewood microgrid power supply system, including:

obtaining real-time operating data from the plurality of devices;

performing optimization control according to the real-time operation data, and generating the energy management control instruction;

Analysis is performed according to the energy management control instruction, so as to perform state switching and coordinated control on the devices at the perception operation layer.

According to some embodiments of the present disclosure, the optical-storage-firewood micro-grid power supply system and its control method generate energy management control instructions according to the real-time operation data of the equipment, and intelligently dispatch and control the electric energy, so as to realize the energy balance and rational application of the system .

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure. Apparently, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings according to these drawings without creative efforts.

Fig. 1 shows a schematic diagram of an optical-storage-firewood microgrid power supply system provided in an embodiment of the present disclosure.

Fig. 2 shows a schematic structural diagram of an optical-storage-firewood microgrid power supply system provided in an embodiment of the present disclosure.

Fig. 3 shows a flow chart of a control method for an optical-storage-firewood microgrid power supply system provided by another embodiment of the present disclosure.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details being omitted, or other methods, components, devices, steps, etc. may be adopted. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the present disclosure.

Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different network and/or processor means and/or microcontroller means.

At present, there are still many problems that cannot be avoided and solved by simply using the power supply system of diesel generator sets for power supply:

1. The cost of diesel power generation is high and the economy is poor. Considering only the fuel consumption cost of diesel power generation, 1L of diesel weighs 0.83-0.86kg, and consumes 230-240g of fuel per kilowatt-hour, that is, the power generation of 1L diesel is about 4 kilowatt-hours of electricity. The price of diesel at an overseas site is 6.06 yuan/L, then The cost of diesel power generation is 1.515 yuan/kWh. Considering the initial equipment investment and operation and maintenance costs of diesel units, the electricity cost of the enterprise will be as high as 2 yuan/kWh.

2. Diesel power generation has serious environmental pollution. Diesel generator sets convert heat energy into electrical energy by burning diesel oil. During this process, it will inevitably pollute the atmosphere. Pollution problems can be roughly divided into oxidation, acidification, photochemical smog, particulate matter, greenhouse effect, and exhaust gas.

3. The noise pollution of diesel generators is serious during operation. Diesel generators usually produce 95-125dB (A) noise when they are running, and if people live in an environment above 80dB (A) for a long time, it will cause emotional irritability, hearing loss and other problems.

4. The power quality of the power supply of the diesel generator is poor. When the electrical load fluctuates greatly, the output voltage and frequency of the diesel engine will be unstable; similarly, when the load has a large amount of reactive power, the power factor of the system will drop, which will also affect the power supply quality of the diesel unit. As a factory enterprise, the start-up of large-scale loads is unavoidable and relatively frequent. Therefore, the power quality of the diesel engine power supply system is poor, which greatly affects the service life of the power supply equipment and even affects normal production.

5. The operation and maintenance workload of diesel power generation is huge, requiring professional and technical personnel to maintain; in addition, the transportation and storage of diesel oil also requires a lot of manpower and material costs, and the entire power supply system cannot be operated and maintained unmanned.

Since the above-mentioned problems still exist in the power supply of the diesel generator set power supply system, the present disclosure provides a power supply control method and system based on an optical-storage diesel-diesel microgrid to solve the above-mentioned problems.

Fig. 1 shows a schematic diagram of an optical-storage-firewood micro-grid power supply system provided in an embodiment of the present disclosure. As shown in Fig. 1 , the system 100 includes multiple devices 110 at the perception operation layer to form a micro-grid, located at the coordinated control The coordinated stability control device 120 of the layer and the energy management device 130 located in the energy management layer.

The coordinated and stable control device 120 located at the coordinated control layer is connected to multiple devices 110, and is configured to obtain real-time operation data from multiple devices 110, and analyze them according to energy management control instructions, so as to perform state switching and monitoring of devices on the sensing operation layer. Coordinated control: The energy management device 130 located in the energy management layer is connected to the coordinated and stable control device 120, configured to receive real-time operation data from the coordinated and stable control device 120 and perform optimal control, generate energy management control instructions, and send the energy management control instructions to Coordinated stability control 120 .

In an embodiment of the present disclosure, the multiple devices 110 include: a power supply unit, an energy storage unit, a power consumption unit, and a diesel generator set. The power supply unit is configured to provide electric energy to the microgrid, including solar photovoltaic panels and photovoltaic inverters; the energy storage unit is configured to store and balance electric energy, including battery modules, battery management system (battery management system, BMS, which is the link between the battery and the user) The control object is the battery, mainly to improve the utilization rate of the battery, prevent the battery from overcharging and overdischarging) and the energy storage bidirectional converter; the power unit is configured to use electric energy, including intelligent power distribution cabinets and Electric load; diesel generator set configured to provide backup power to the microgrid. The battery modules here include: accumulators, lithium batteries and supercapacitors. The accumulators may include but not limited to lead-carbon accumulators. Appropriate batteries can be selected for power supply according to the electricity demand.

In an embodiment of the present disclosure, the microgrid also includes an AC busbar, and the solar photovoltaic panel is connected to the AC busbar through a photovoltaic inverter; the battery module is connected to the AC busbar through an energy storage bidirectional converter; The electric cabinet is connected to the AC busbar; the diesel generator set is connected to the AC busbar.

In an embodiment of the present disclosure, the battery management system BMS is connected between the battery and the energy storage bidirectional converter, and/or the battery management system BMS is connected between the lithium battery and the energy storage bidirectional converter, and the battery management system BMS It is configured to control and protect the charging and discharging of storage battery or lithium battery.

In the embodiment of the present disclosure, the photovoltaic inverter is configured to convert the direct current output by the solar photovoltaic panel into alternating current; the energy storage bidirectional converter is configured to convert the direct current output by the battery module into alternating current, and when the When the power consumption is greater than the power consumption of the electric load, the AC power output by the AC bus bar is converted into DC power and transmitted to the energy storage unit.

In an embodiment of the present disclosure, in addition to the coordinated and stable control device 120, the coordinated control layer also includes: a communication interface 140 configured to communicate with the coordinated and stable control device 120 with the multiple devices 110 and the energy management device 130 at the perceptual operation layer connect.

In an embodiment of the present disclosure, besides the energy management device 130 , the energy management layer also includes: a display terminal 150 connected to the energy management device 130 and configured to display real-time operating parameters and management strategies generated according to optimal control.

Since the photovoltaic storage and diesel microgrid is a small-scale decentralized and independent system, a small power generation and distribution system can be formed by integrating distributed photovoltaic power sources, battery modules, energy conversion devices, loads, monitoring and protection devices, which can realize self-control, An autonomous system for protection and management, so the optical storage and diesel microgrid can operate independently in an isolated grid state.

Fig. 2 shows a schematic structural diagram of an optical-storage-diesel-diesel microgrid power supply system provided in an embodiment of the present disclosure. As shown in Fig. Layer 101, process layer 102, and station control layer 103 are suitable for various types of microgrid forms and control requirements, and can facilitate debugging, operation and maintenance. The main technical features and advantages of this system are as follows:

The device layer 101 is the perception operation layer of the entire optical-storage-firewood micro-grid power supply system. As shown in Figure 2, it includes multiple devices. Through the device layer 101, information of various parts of the micro-grid system can be collected and various controls of the energy management system can be responded to. , Adjustment instructions. Specifically, the equipment layer 101 can be divided into primary equipment and secondary equipment. As shown in FIG. Inverter 2, lead-carbon battery 3, BMS 4 or 7, DC/AC energy storage bidirectional converter 5 or 8 or 10, lithium battery 6, super capacitor 9, intelligent power distribution cabinet 11, power load 12, diesel The generator set 13 and so on belong to the primary equipment, which can be connected to the energy management layer 103 of the microgrid through communication means and can be adjusted and controlled; The function-in-one device obtains the system status and power flow of the microgrid, provides strong support for the coordinated control and optimal scheduling of the energy management layer 103, and provides reliable execution operations for power supply and load switching operations.

Next, the functions and working principles of each device in the device layer 101 are introduced:

(1) As a new energy power supply unit, the solar photovoltaic panel 1 first converts solar energy into electrical energy, and then converts the direct current into alternating current through the DC/AC photovoltaic inverter 2, and transmits it to the AC bus. The installed capacity of solar photovoltaic panels and DC/AC photovoltaic inverter 2 (also called power station capacity) needs to be determined according to the power load of specific projects. The DC/AC photovoltaic inverter 2 can control and record the voltage, current, power of the DC solar photovoltaic output side and the important parameters of the battery panel, and can also record the voltage, current, and frequency of the AC side of the inverter output by the inverter. Main parameters such as power generation and power curve are controlled and recorded, and uploaded to the background energy management system.

As a new type of clean energy, solar power generation is a non-polluting, recyclable green energy source, but due to the fluctuation of solar radiation, the output of solar power generation has great randomness and volatility, and only has output power Downward adjustment ability, no overload adjustment ability, so in order to ensure the power supply stability and power quality of the micro-grid power supply system when the solar radiation fluctuates and the load changes, the micro-grid power supply system must be equipped with power storage and balance capabilities. energy unit.

(2) The energy storage unit is composed of battery modules, BMS, and DC/AC energy storage bidirectional converters. According to different working conditions of power loads and different performance characteristics of battery modules, three types of battery modules can usually be selected: lead-carbon battery , lithium battery, super capacitor.

Both lead-carbon batteries and lithium batteries are chemical energy storage devices. Each energy storage device is composed of a large number of single batteries in series and parallel. Therefore, a dedicated battery management system (BMS) is required to control and monitor the charging and discharging of each battery. protection; as a physical energy storage device, a supercapacitor does not require a dedicated BMS to manage its charge and discharge.

Factories and enterprises generally have large-scale power loads. The start-up process of large-scale loads is usually within 10 seconds, but the start-up power is 3 to 7 times the load power, so short-term high-power power supply is needed. In view of this demand, energy storage According to the large load, the unit can be equipped with a supercapacitor energy storage device with a certain capacity and a super high rate discharge capacity, which is used to balance the short-term high power shortage when the large load is started, and to ensure the power supply quality and reliability of the microgrid power supply system.

In addition to large-scale power loads, factories and enterprises also have medium and small power loads. Although medium and small power loads also need corresponding short-term high-power support when they start, the price of supercapacitors is relatively high, and large-capacity configurations It will lead to unreasonable economics of the entire power supply system. Therefore, considering the starting power and starting duration of the load, as well as the performance requirements of the energy storage device, in this case, a lithium battery energy storage device can be used to balance the power consumption of small and medium-sized electric loads. Fluctuation not only ensures the reliability, stability, and high-quality power supply of the microgrid power supply system, but also ensures the economy of the entire system and reduces power supply costs.

Due to the real-time changes of solar power generation with the influence of radiation, the solar power generation is sometimes higher than the load power consumption, and sometimes lower than the load power consumption, which leads to the need to configure a certain energy storage device to store the excess solar power generation , and then release it when the system needs electric energy. Considering the performance requirements of the energy storage device under this working condition, a lead-carbon battery with a relatively low discharge rate but better cost performance is selected as the energy storage device, which can be used in more economical conditions. The energy storage of solar power generation and the energy balance of the micro-grid power supply system can be completed to ensure the overall performance of the system and reduce the cost of power supply.

The output of the energy storage device (lead-carbon battery, lithium battery or supercapacitor) is direct current, and the direct current needs to be converted into alternating current through a DC/AC energy storage bidirectional converter, and then transmitted to the AC bus to supply power for the microgrid system Provide energy support. When solar power generation has excess power, the DC/AC energy storage bidirectional converter can also be used to rectify the alternating current on the AC bus into direct current, and then transmit it to the energy storage device for charging the energy storage device.

In addition, the DC/AC energy storage bidirectional converter also has a communication interface with the battery management system BMS, which can send battery operation information to the background energy system 15 of the microgrid; at the same time, the DC/AC energy storage bidirectional Communication interfaces such as power grid control function, power adjustment function, and parameter download function meet the control requirements of the microgrid operation control system. The DC/AC energy storage bidirectional converter can control and record the voltage, current, power and important parameters of the battery on the output side of the DC battery, and can also monitor the voltage, current, and power factor of the AC side output by the converter, and the current output ( (or input) power, daily input power, daily output power and daily power curve and other main parameters are controlled and recorded, and sent to the background energy system 15 of the microgrid.

(3) The intelligent power distribution cabinet 11 can effectively grasp the working conditions of the electric load 12, and carry out reasonable load forecasting. When necessary, in order to ensure the stability of the entire system, the faulty load or non-important load can be removed in time, and combined with the microgrid The background energy system realizes the rational utilization of energy in the entire system and reduces the power consumption of enterprises.

(4) The diesel generator set 13 is used as a backup power supply. When the microgrid power supply system fails, the solar power generation capacity is insufficient in continuous rainy weather, and there is no solar power supply at night, the diesel generator set is started to provide power for the enterprise.

The process layer 102 is the coordination control layer of the power supply system of the optical storage and diesel fuel microgrid. As shown in FIG. Restricted to connections via the serial interface. On the one hand, the process layer 102 is connected to the equipment layer 101 to obtain the panoramic monitoring data of the microgrid. On the other hand, it is connected to the background energy management system 15 of the energy management layer 103 to analyze the energy management control instructions and issue and execute various operation instructions. Used to achieve the control objectives of the energy management system.

It should be noted that the micro-grid coordination and stability control device 14 of the process layer 102 may include a micro-grid operation controller and a micro-grid stability control device, wherein the micro-grid operation controller is used to realize the state switching and coordination control of the micro-grid, effectively solving the distributed The instability and intermittency of the type power supply itself ensures the balance and continuity of the power supply; the microgrid stability control device is based on the interactive fast fault processing technology, which can realize the stability control functions of the microgrid such as low frequency and The grid coordination control strategy has the function of ensuring the safe and stable operation of the micro grid.

The station control layer 103 is the energy management layer of the optical-storage-firewood micro-grid power supply system, so the background energy management system of the micro-grid in the station control layer 103 can be regarded as the brain of the entire system, realizing a panoramic view of the real-time operation data of each device in the micro-grid Monitoring analysis and formulation of energy management strategies are also the main station layer of microgrid control. The basic function of the microgrid monitoring system is to monitor the real-time operation data of the microgrid. Based on the real-time operation data, combined with application analysis results such as distributed generation forecasting and load forecasting, the microgrid monitoring system formulates optimal scheduling and energy management strategies for the microgrid system under multiple constraints, and sends the formulated strategies to the microgrid operation Controller, microgrid stability control device.

Based on the above, as a new type of green and renewable power supply system, the photovoltaic storage diesel micro-grid power supply system uses solar energy as the external energy input, converts solar energy into electrical energy through solar panels, and then converts direct current into electrical energy through photovoltaic inverters. AC power provides energy supply for the entire system; when the solar power generation is greater than the load power consumption, the AC power on the bus is rectified into DC power through the energy storage bidirectional converter and sent to the energy storage system, which stores the electric energy , when the load changes and the solar light fluctuates, the energy storage releases the energy, and the DC power released by the energy storage is converted into AC power through the energy storage bidirectional converter, and sent to the AC bus, and the smart control device is coordinated and stabilized through the microgrid Scheduling and control realize the energy balance of the system. At the same time, the background energy management system of the microgrid optimizes the control of the microgrid according to the pre-customized control strategy to realize the rational use of energy and ensure the economical and reliable operation of the system.

If an example is used to introduce the technical effect of the power supply system provided by the embodiment of the present disclosure:

Taking an overseas project site as an example, the diesel engine power station is currently used for power supply, which consists of three 2570kVA (11kV/0.42kV) and one 200kVA 420V black start diesel generators. The highest power load value in the power supply area reaches 2500kW, and the lowest The electricity load value is 1600kW, the average daily electricity consumption is about 50,000 kWh, and the kWh cost of electricity consumption is 2.1 yuan/kWh. The cost of electricity in the project site is high, the quality of power supply is poor, and power outages often occur.

However, if the light-storage-firewood micro-grid system provided by the embodiment of the present disclosure is used to reconfigure the power supply system for the project, install a solar photovoltaic power generation system of 6.5MWp, lead-carbon battery energy storage of 5MWh, lithium battery energy storage of 1MWh, and supercapacitor energy storage of 500kW . After adopting the new optical storage diesel micro-grid power supply system, the cost of electricity consumption can be reduced to 0.8 yuan/kwh, which can effectively solve the problem of high power supply cost of the project, and can meet the 24h stable power supply requirements of the load, and ensure the power quality of power supply .

To sum up, through the light-storage-firewood micro-grid power supply system provided by the embodiments of the present disclosure, on the one hand, a power generation system that combines solar photovoltaic power generation and new energy power generation with energy storage is integrated into the original diesel power generation system to form a new type of green and environmentally friendly The power supply system can eliminate (or reduce) the environmental pollution and noise pollution of the power supply; on the other hand, according to different power load requirements, three energy storage devices, namely super capacitor, lithium battery and lead-carbon storage battery, can be used to fully utilize The performance advantages of each energy storage device not only guarantee the power quality of the power supply system, meet the start-up requirements of various loads, but also reasonably reduce the cost of the entire microgrid power supply system. Therefore, the optical-storage diesel micro-grid power supply system can improve the power quality of the power supply, provide a stable, reliable, green, pollution-free, and recyclable renewable clean power supply, and reduce the cost of power supply, which can solve the problem of factories in areas without electricity. Enterprise electricity problem.

FIG. 3 shows a flow chart of a control method for an optical-storage-diesel-diesel microgrid power supply system provided by another embodiment of the present disclosure, which is used to reasonably manage and control the optical-storage-diesel-diesel microgrid power supply system 100 .

As shown in FIG. 3 , in step S310 , real-time running data is acquired from multiple devices. The real-time operation data includes parameters such as voltage, current, and power generation of the equipment in a stable operating state.

As shown in FIG. 3 , in step S320 , optimal control is performed according to the real-time operation data, and an energy management control instruction is generated.

As shown in FIG. 3 , in step S330 , analysis is performed according to the energy management control instruction, so as to perform state switching and coordinated control on devices at the operation-aware layer.

The control system in this embodiment can achieve the same technical effect as the above-mentioned server-to-machine control method, which will not be repeated here.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or portion of code that includes one or more logical functions for implementing specified executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block in the block diagrams or flowchart illustrations, and combinations of blocks in the block diagrams or flowchart illustrations, can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a A combination of dedicated hardware and computer instructions.

The units involved in the embodiments described in the present application may be implemented by means of software or by means of hardware. The described units may also be set in a processor, for example, it may be described as: a processor includes a sending unit, an acquiring unit, a determining unit, and a first processing unit. Wherein, the names of these units do not limit the unit itself under certain circumstances, for example, the sending unit may also be described as “a unit that sends a picture acquisition request to the connected server”.

It should be clearly understood that this disclosure describes how to make and use specific examples, but that the principles of the disclosure are not limited to any details of these examples. Rather, these principles can be applied to many other implementations based on the teachings of the present disclosure.

Exemplary embodiments of the present disclosure have been specifically shown and described above. It should be understood that the disclosure is not limited to the detailed structures, arrangements or methods of implementation described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (10)

1. A power supply system for light storage and firewood microgrid, characterized in that it comprises: Multiple devices located in the sensing operation layer to form a microgrid; The coordination and stability control device located at the coordination control layer is connected to the plurality of devices and is configured to obtain real-time operation data from the plurality of devices and analyze them according to the energy management control instructions, so as to control the devices at the perception operation layer state switching and coordination control; and An energy management device located in the energy management layer, connected to the coordination and stability control device, configured to receive the real-time operation data from the coordination and stability control device and perform optimal control, generate the energy management control instruction, and convert the energy Supervisory control instructions are sent to said coordinated stability control means. 2. The light-storage-firewood micro-grid power supply system according to claim 1, wherein the plurality of devices include: a power supply unit configured to provide electrical energy to the microgrid, including solar photovoltaic panels and photovoltaic inverters; An energy storage unit configured to store and balance electrical energy, including a battery module, a battery management system BMS and an energy storage bidirectional converter; a power consumption unit configured to consume electrical energy, including an intelligent power distribution cabinet and a power consumption load; and A diesel generator set configured to provide backup power to the microgrid. 3. The light-storage-firewood micro-grid power supply system according to claim 2, wherein the micro-grid also includes an AC busbar; The solar photovoltaic panel is connected to the AC bus through the photovoltaic inverter; The battery module is connected to the AC bus through the energy storage bidirectional converter; The electric load is connected to the AC bus through the intelligent power distribution cabinet; The diesel generator set is connected to the AC bus. 4. The optical-storage-firewood micro-grid power supply system according to claim 2, wherein the battery module includes: a storage battery, a lithium battery and a supercapacitor. 5. The light-storage-firewood micro-grid power supply system according to claim 4, wherein the battery management system (BMS) is connected between the storage battery and the energy storage bidirectional converter, and/or the battery The management system BMS is connected between the lithium battery and the energy storage bidirectional converter, and the battery management system BMS is configured to control and protect the charging and discharging of the storage battery or the lithium battery. 6. The solar-storage-firewood micro-grid power supply system according to claim 4 or 5, wherein the battery is a lead-carbon battery. 7. The light-storage-firewood micro-grid power supply system according to claim 2, wherein the photovoltaic inverter is configured to convert the direct current output by the solar photovoltaic panel into alternating current; the energy storage bidirectional converter It is configured to convert the direct current output by the battery module into alternating current, and when the electricity output by the solar photovoltaic panel is greater than the electricity consumption of the electric load, convert the alternating current output by the AC bus into direct current, and transmit the to the energy storage unit. 8. The optical-storage-firewood micro-grid power supply system according to claim 1, wherein the coordinated control layer further includes: A communication interface configured to communicate and connect the coordinated stability control device with the plurality of devices in the perception operation layer and the energy management device. 9. The optical-storage-firewood micro-grid power supply system according to claim 1, wherein the energy management layer further includes: The display terminal is connected with the energy management device and is configured to display the real-time operating parameters and the management strategy generated according to the optimization control. 10. A control method for an optical-storage-firewood micro-grid power supply system, characterized in that it comprises: obtaining real-time operating data from the plurality of devices; performing optimization control according to the real-time operation data, and generating the energy management control instruction; Analysis is performed according to the energy management control instruction, so as to perform state switching and coordinated control on the devices at the perception operation layer.