Light storage, charging and station switching level supervision system for gas station

Abstract

The invention discloses a gas station optical storage, charging and switching level supervision system, and belongs to the field of gas station optical storage, charging and switching level supervision. The problems that in an existing optical storage, charging and switching station, all devices are mutually independent, data are not shared, integrated management or data analysis cannot be carried out, and energy-saving benefits cannot be visually inquired are solved. The gas station light storage, charging and switching station comprises photovoltaic equipment, energy storage equipment, photovoltaic residual electricity networking equipment, electric equipment and operational equipment. And the operating equipment comprises charging equipment and battery replacement equipment. The system is suitable for managing the light storage, charging and station switching of the gas station.

Description

Technical Field

[0001] The present invention relates to the field of station-level supervision of gas stations. Background Art

[0002] With the continuous development of the photovoltaic, energy storage and new energy vehicle industries, more and more charging and swapping stations that combine photovoltaic, energy storage and charging functions are appearing in the market.

[0003] At present, most of the charging stations seen on the market use AC power for charging, that is, the high voltage electricity we usually see is then converted through a transformer box to reach the voltage and current used by the charging station for charging.

[0004] However, with the advancement and maturity of technology, the integrated charging and swapping station of "photovoltaic + energy storage + charging" (abbreviated as photovoltaic storage charging and swapping station) can itself become a multi-complementary energy generation microgrid system, which can realize functions such as photovoltaic self-generation and self-use and surplus power storage. At the same time, combined with energy storage peak-valley arbitrage, it can maximize the use of peak-valley electricity prices to maximize economic benefits. In addition, compared with the existing charging and swapping stations that use municipal electricity, photovoltaic storage charging and swapping stations can effectively smooth the load impact on the distribution network, reduce the cost of the charging station distribution line, and produce good social and economic benefits.

[0005] However, existing solar-storage charging and swapping stations also have some problems:

[0006] 1. The photovoltaic systems, energy storage equipment and charging piles used in existing photovoltaic storage and charging stations are generally purchased from different independent hardware service providers. Each of these devices and systems has its own set of data specifications. Each device and system is independent of each other, and the data is not shared, making it impossible to integrate management or conduct data analysis.

[0007] 2. In actual business use, the existing photovoltaic storage charging and swapping stations cannot intuitively query the energy-saving benefits when multiple devices are linked. Summary of the invention

[0008] The present invention proposes a gas station photovoltaic storage charging and swapping station-level supervision system, which solves the problems that the existing photovoltaic storage charging and swapping stations have independent devices, different data, inability to integrate management or data analysis, and inability to intuitively query energy saving benefits.

[0009] The technical solution of the gas station photovoltaic storage charging and swapping station-level supervision system of the present invention is as follows:

[0010] The system is used to supervise the photovoltaic storage charging and swapping station at the gas station, which includes photovoltaic equipment, energy storage equipment, photovoltaic surplus power access equipment, power-consuming equipment and business equipment; the business equipment includes charging equipment and battery swapping equipment;

[0011] The system includes a data acquisition device, a comprehensive analysis subsystem, an intelligent control subsystem and an information display subsystem;

[0012] The data acquisition device is used to collect the operation and business data of the photovoltaic equipment, energy storage equipment, photovoltaic surplus power grid-connected equipment, power-consuming equipment, and business equipment, as well as the weather data of the gas station photovoltaic storage charging and swapping station; the data acquisition device sends the collected data to the comprehensive analysis subsystem and the intelligent control subsystem;

[0013] The comprehensive analysis subsystem is used to conduct a comprehensive analysis on the operation and management data to obtain a comprehensive analysis result;

[0014] The intelligent control subsystem is used to control the operation of the photovoltaic equipment, photovoltaic surplus power grid-connected equipment, energy storage equipment, charging equipment and battery replacement equipment according to the operation and management data.

[0015] Furthermore, a preferred embodiment is provided, wherein the operation and management data include photovoltaic power generation data of the photovoltaic equipment, charging and discharging data of the energy storage equipment, electricity consumption data of the gas station photovoltaic storage charging and swapping station, photovoltaic surplus power online data of the photovoltaic equipment, and order data of the management equipment.

[0016] Further, a preferred embodiment is provided, wherein the data acquisition device includes a photovoltaic device data acquisition module, an energy storage device data acquisition module, an electric device data acquisition module, an Internet access data acquisition module, a weather data acquisition module, and an operating data acquisition module;

[0017] A photovoltaic equipment data acquisition module, used to collect photovoltaic power generation data of the photovoltaic equipment;

[0018] An energy storage device data acquisition module, used to collect charging and discharging data of the energy storage device;

[0019] An electric equipment data collection module, used to collect the electric consumption data of the gas station solar storage charging and swapping station;

[0020] An online data collection module, used to collect the online data of the photovoltaic surplus power of the photovoltaic equipment;

[0021] A weather data collection module, used to collect weather data of the gas station solar energy storage charging and swapping station; the weather data includes light intensity and temperature data in the gas station solar energy storage charging and swapping station;

[0022] The business data collection module is used to collect the order data of the business equipment.

[0023] Furthermore, a preferred implementation manner is provided, wherein the comprehensive analysis results include electricity consumption analysis results, power generation analysis results, surplus power grid-connected analysis results, energy storage analysis results, energy consumption analysis results and benefit analysis results; wherein the benefit analysis results include photovoltaic benefits, operating benefits and energy-saving benefits.

[0024] Furthermore, a preferred embodiment is provided, wherein the comprehensive analysis subsystem uses environmental protection indicators to represent the energy saving benefits; the environmental protection indicators include CO2 emission reduction, equivalent tree planting amount and standard carbon saving, wherein:

[0025] CO2 emission reduction = actual power generation × CO2 emission reduction conversion coefficient;

[0026] Equivalent tree planting amount = CO2 emission reduction / equivalent tree planting amount conversion factor / 40;

[0027] Standard carbon saved = actual power generation × standard carbon saved conversion coefficient (0.329kg / Kw.h);

[0028] Among them, the unit of the CO2 emission reduction is Kg; the unit of the equivalent tree planting amount is tree; the unit of the standard carbon saving amount is Kg; the value of the CO2 emission reduction conversion coefficient is 0.997kg / Kw.h; the value of the equivalent tree planting amount conversion coefficient is 18.3; the value of the standard carbon saving conversion coefficient is 0.329kg / Kw.h; the actual power generation is obtained according to the photovoltaic power generation data.

[0029] Further, a preferred embodiment is provided, wherein the intelligent control subsystem includes a photovoltaic device control module, an energy storage device control module, a charging device control module, and a battery exchange device control module;

[0030] The photovoltaic equipment control module is connected to the photovoltaic equipment and the photovoltaic surplus power grid-connected equipment by signal, and is used to execute the grid-connected control strategy to control the photovoltaic equipment and the photovoltaic surplus power grid-connected equipment.

[0031] The energy storage device control module is connected to the energy storage device signal and is used to execute the energy storage charging strategy and the energy storage discharging strategy to control the energy storage device;

[0032] The charging device control module is connected to the charging device signal and is used to execute the charging device control strategy to control the charging device;

[0033] The battery swapping equipment control module is connected to the battery swapping equipment signal and is used to execute the battery swapping equipment control strategy to control the battery swapping equipment.

[0034] Further, a preferred implementation is provided, wherein the Internet access control strategy is as follows:

[0035] Compare the current energy storage capacity of the energy storage device with the grid-connected energy storage threshold:

[0036] If the current energy storage capacity is greater than or equal to the grid-connected energy storage threshold, the grid-connected condition is met, and a grid-connected instruction is sent to the photovoltaic device and the photovoltaic surplus power grid-connected device;

[0037] Otherwise, a light abandonment instruction is sent to the photovoltaic device.

[0038] Further, a preferred implementation is provided, wherein the energy storage charging strategy is as follows:

[0039] If the current city power is in the off-peak period: if the current energy storage capacity of the energy storage device is lower than the off-peak energy storage charging threshold, send an energy storage instruction to the energy storage device, otherwise send an energy storage end instruction;

[0040] If the current city power is in normal period: if the current energy storage capacity of the energy storage device is lower than the normal energy storage charging threshold, send an energy storage instruction to the energy storage device, otherwise send an energy storage end instruction;

[0041] If the current city electricity is in the peak period: if the current energy storage capacity of the energy storage device is lower than the peak energy storage charging threshold, send an energy storage instruction to the energy storage device, otherwise send an energy storage end instruction;

[0042] The energy storage discharge strategy is as follows:

[0043] If the current city electricity is in the peak period: if the current energy storage capacity of the energy storage device is higher than the peak energy storage discharge threshold, a discharge instruction is sent to the energy storage device, otherwise a discharge end instruction is sent;

[0044] If the current city power is in a power outage period: if the current energy storage capacity of the energy storage device is higher than the energy storage discharge threshold during power outage, a discharge instruction is sent to the energy storage device, otherwise a discharge end instruction is sent;

[0045] If the current mains load is greater than the mains load threshold: if the current energy storage capacity of the energy storage device is higher than the energy storage discharge threshold during overload, a discharge instruction is sent to the energy storage device, otherwise a discharge end instruction is sent.

[0046] Furthermore, a preferred implementation is provided, wherein the charging device control strategy is as follows:

[0047] When charging with a slow charging station, the strategy of evenly distributing the total power of the power source is adopted for charging;

[0048] When charging with a fast charging station, a demand-based charging strategy is adopted.

[0049] Furthermore, a preferred implementation is provided, wherein the control strategy of the battery swapping equipment is as follows:

[0050] If the current city electricity is in the off-peak period: if the number of fully charged battery packs of the battery swapping device is less than the off-peak battery pack threshold, a battery pack charging instruction is sent to the battery swapping device, otherwise a battery swapping end instruction is sent;

[0051] If the current city power is in the normal period: if the number of fully charged battery packs of the battery swapping device is less than the normal battery pack threshold, a battery pack charging instruction is sent to the battery swapping device, otherwise a battery swapping end instruction is sent;

[0052] If the current city electricity is in the peak period: if the number of fully charged battery packs of the battery swapping device is less than the peak battery pack threshold, a battery pack charging instruction is sent to the battery swapping device, otherwise a battery swapping end instruction is sent;

[0053] If the mains electricity is not used at present but the energy storage device is used for power generation: if the number of fully charged battery packs of the battery swapping device is less than the battery pack threshold value during energy storage power generation, a battery pack charging instruction is sent to the battery swapping device, otherwise a battery swapping end instruction is sent;

[0054] If the mains electricity is not used at present but photovoltaic equipment is used to generate electricity: if the number of fully charged battery packs of the battery swapping device is less than the battery pack threshold during photovoltaic power generation, a battery pack charging instruction is sent to the battery swapping device, otherwise a battery swapping end instruction is sent.

[0055] The present invention has the following beneficial effects:

[0056] 1. The gas station photovoltaic storage charging and swapping station-level supervision system described in the present invention uses a unified data specification through a data acquisition device to collect the operation and management data of various equipment such as the photovoltaic equipment, charging equipment and energy storage equipment, and integrates and analyzes these operation and management data, so that each device is no longer independent, which facilitates the unified management of various equipment in the charging and swapping station.

[0057] 2. The gas station photovoltaic storage charging and swapping station-level supervision system described in the present invention can provide powerful data analysis functions through a comprehensive analysis subsystem, and provide optimized guidance for power generation and consumption in the gas station photovoltaic storage charging and swapping station. At the same time, it can quantify the natural resources saved by photovoltaic power generation into data, which can facilitate subsequent real-time inquiries on energy-saving benefits.

[0058] 3. The gas station photovoltaic storage charging and swapping station-level supervision system described in the present invention can realize reasonable allocation and intelligent scheduling of power generation and consumption in the gas station photovoltaic storage charging and swapping station through the intelligent control subsystem to save energy and increase efficiency; for example, the use of the intelligent control subsystem to control photovoltaic equipment and photovoltaic surplus power access equipment can ensure that the power generated by photovoltaic equipment is fully absorbed, reduce the phenomenon of "abandoned light", realize reasonable allocation and intelligent scheduling of electricity consumption, maximize the use of renewable energy, achieve the purpose of coordinating energy demand and production supply and optimizing resources, improve user power quality and power supply reliability, and promote the goal of achieving green, energy-saving and maximizing station economic benefits.

[0059] 4. The gas station photovoltaic storage charging and swapping station-level supervision system described in the present invention can use various charts to allow managers to quickly understand the operating conditions of power generation and consumption in the gas station photovoltaic storage charging and swapping station through the information display subsystem. It can also display various data such as the comprehensive analysis results of the linkage of various equipment in the gas station photovoltaic storage charging and swapping station. For example, the energy-saving benefits can be viewed, which is convenient for the managers of the gas station photovoltaic storage charging and swapping station to carry out accounting management of various equipment in the charging and swapping station.

[0060] The gas station photovoltaic storage charging and swapping station-level supervision system is suitable for managing gas station photovoltaic storage charging and swapping stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the technical drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0062] Figure 1 This is a structural diagram of a gas station photovoltaic storage charging and swapping station-level supervision system in one embodiment of the present invention;

[0063] Figure 2 A structural diagram of a data acquisition device in one embodiment of the present invention;

[0064] Figure 3 This is a structural diagram of a comprehensive analysis subsystem in one embodiment of the present invention. DETAILED DESCRIPTION

[0065] In order to make the technical solutions and advantages of the present invention more clearly described, the specific implementation methods in the embodiments of the present invention will be further described in detail and completely in conjunction with the accompanying drawings; obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; the embodiments described below are exemplary and are intended to be used to explain the present invention, and cannot be understood as limiting the present invention; the reasonable combination of the technical features defined in the various embodiments of the present invention, and all other embodiments obtained by ordinary technicians in the field without making creative work based on the embodiments of the present invention, all belong to the scope of protection of the present invention.

[0066] Implementation Method 1: Combination Figure 1 -3 Description of this implementation mode: This implementation mode provides a gas station photovoltaic storage charging and swapping station-level supervision system, and the specific implementation contents are as follows:

[0067] The system is used to supervise the photovoltaic storage charging and swapping station at the gas station, which includes photovoltaic equipment, energy storage equipment, photovoltaic surplus power access equipment, power-consuming equipment and business equipment; the business equipment includes charging equipment and battery swapping equipment;

[0068] The system includes a data acquisition device, a comprehensive analysis subsystem, an intelligent control subsystem and an information display subsystem;

[0069] The data acquisition device is used to collect the operation and business data of the photovoltaic equipment, energy storage equipment, photovoltaic surplus power grid-connected equipment, power-consuming equipment, and business equipment, as well as the weather data of the gas station photovoltaic storage charging and swapping station; the data acquisition device sends the collected data to the comprehensive analysis subsystem and the intelligent control subsystem;

[0070] The comprehensive analysis subsystem is used to conduct a comprehensive analysis on the operation and management data to obtain a comprehensive analysis result;

[0071] The intelligent control subsystem is used to control the operation of the photovoltaic equipment, photovoltaic surplus power grid-connected equipment, energy storage equipment, charging equipment and battery replacement equipment according to the operation and management data.

[0072] In this implementation, the business equipment also includes other business equipment, such as convenience store related equipment.

[0073] Implementation Method 2: Combination Figure 1 -3 Description of this implementation mode. This implementation mode further limits the operation and business data in the gas station photovoltaic storage charging and swapping station-level supervision system described in Implementation Mode 1. The specific implementation contents are as follows:

[0074] The operation and management data include the photovoltaic power generation data of the photovoltaic equipment, the charging and discharging data of the energy storage equipment, the electricity consumption data of the gas station photovoltaic storage charging and swapping station, the photovoltaic surplus power online data of the photovoltaic equipment and the order data of the management equipment.

[0075] In this embodiment, the photovoltaic surplus power grid-connected data refers to the data generated by the surplus power grid-connected of photovoltaic equipment, such as the amount of surplus power grid-connected of photovoltaic equipment (or photovoltaic system, distributed photovoltaic system), the time of surplus power grid-connected, the electricity fee of surplus power grid-connected, etc. Surplus power refers to the amount of power generated by photovoltaic equipment, and the excess power is the surplus power after deducting the total power consumption of power-consuming equipment; surplus power grid-connected means sending the surplus power to the power grid.

[0076] Further, in one embodiment of the present invention, the data acquisition device includes a photovoltaic equipment data acquisition module, an energy storage equipment data acquisition module, an electric equipment data acquisition module, an Internet access data acquisition module, a weather data acquisition module, and an operating data acquisition module;

[0077] A photovoltaic equipment data acquisition module, used to collect photovoltaic power generation data of the photovoltaic equipment;

[0078] An energy storage device data acquisition module, used to collect charging and discharging data of the energy storage device;

[0079] An electric equipment data collection module, used to collect the electric consumption data of the gas station solar storage charging and swapping station;

[0080] An online data collection module, used to collect the online data of the photovoltaic surplus power of the photovoltaic equipment;

[0081] A weather data collection module, used to collect weather data of the gas station solar energy storage charging and swapping station; the weather data includes light intensity and temperature data in the gas station solar energy storage charging and swapping station;

[0082] The business data collection module is used to collect the order data of the business equipment.

[0083] In this embodiment, the method of using the data acquisition device to collect data is roughly as follows:

[0084] Each data acquisition module of the data acquisition device is connected to a corresponding device by signal. For example, a photovoltaic device data acquisition module is connected to a photovoltaic device by signal.

[0085] Each data acquisition module also has a connection device management submodule, which records the basic information of the devices to be connected and already connected. The devices to be connected and already connected include the photovoltaic equipment, energy storage equipment, photovoltaic surplus power access equipment, power-consuming equipment and the main operating equipment and supporting equipment in the business equipment, and the supporting equipment includes smart meters and inverters. The basic information of the equipment includes the equipment name, equipment SN, equipment model, equipment type, use area, function type, manufacturer code and whether the switch is enabled to control its enabled state.

[0086] Among them, the device SN is the unique identifier of the device; through the device SN, each device can be collected in a round-robin manner to obtain the operation and management data of each device, and a database can be established to map the operation and management data of each device to the corresponding storage location in the database one by one.

[0087] In addition, the device activation state includes two states: activation and non-activation. For a device whose activation state is controlled by an activation switch, the data acquisition device will continuously and in real time collect the operation data of the device in a round-robin manner; for a device whose activation state is not controlled by an activation switch, the data acquisition device will no longer collect its data.

[0088] The data acquisition device can also record the device parameters of the connected device, and the device parameters mainly include inverter parameters and energy storage device parameters.

[0089] The inverter parameters include: inverter size, maximum input power, maximum output power, rated output voltage, rated output power, weight, maximum input voltage, maximum output voltage, rated voltage, and photovoltaic installation capacity.

[0090] The energy storage device parameters include: energy storage device size, maximum energy storage capacity, converter power, total cycle life, capacity, rated voltage, rated power, rated charge and discharge current, annual attenuation, weight, battery system voltage, energy storage system efficiency, battery type, energy, rated current, operating voltage range, and maximum charge and discharge current.

[0091] Furthermore, in one embodiment of the present invention, the interface of the data acquisition device for signal connection with the photovoltaic equipment, energy storage equipment, photovoltaic surplus power access equipment, power-consuming equipment and commercial equipment is compatible with protocols such as TCP, UDP, MQTT, HTTP, TLS and DTLS.

[0092] In this implementation, the data acquisition device can achieve unified management of different devices produced by different manufacturers and unified access to different messages by adopting an interface that is compatible with multiple protocols.

[0093] Furthermore, in one embodiment of the present invention, the interface of the data acquisition device for signal connection with the photovoltaic equipment, energy storage equipment, photovoltaic surplus power grid-connected equipment, power-consuming equipment and commercial equipment adopts a dynamic access method and supports plug-and-play.

[0094] In this embodiment, the data acquisition device supports hot plug (plug and play). When data acquisition is needed, the external device can be connected at any time. Once the online device is started, data acquisition can be performed in real time, and multiple round-robin acquisition methods are used to avoid data loss.

[0095] Implementation Method 3: Combination Figure 1 -3 Description of this embodiment. This embodiment further limits the comprehensive analysis results in the gas station photovoltaic storage charging and swapping station-level supervision system described in Embodiment 1. The specific implementation contents are as follows:

[0096] The comprehensive analysis results include electricity consumption analysis results, power generation analysis results, surplus power grid-connected analysis results, energy storage analysis results, energy consumption analysis results and benefit analysis results; wherein the benefit analysis results include photovoltaic benefits, operating benefits and energy-saving benefits.

[0097] In this embodiment, the photovoltaic income can be obtained based on the photovoltaic power generation data and the photovoltaic surplus power grid-connected data, which belongs to the existing conventional technology and will not be elaborated here; the operating income can be obtained based on the electricity consumption data (the electricity consumption data includes the electricity consumption data of the operating equipment) and the operating equipment order data, which belongs to the existing conventional technology and will not be elaborated here.

[0098] Furthermore, in one embodiment of the present invention, the comprehensive analysis subsystem uses environmental protection indicators to represent the energy-saving benefits; the environmental protection indicators include CO2 emission reduction, equivalent tree planting amount and standard carbon saving, where:

[0099] CO2 emission reduction = actual power generation × CO2 emission reduction conversion coefficient;

[0100] Equivalent tree planting amount = CO2 emission reduction / equivalent tree planting amount conversion factor / 40;

[0101] Standard carbon saved = actual power generation × standard carbon saved conversion coefficient (0.329kg / Kw.h);

[0102] Among them, the unit of the CO2 emission reduction is Kg; the unit of the equivalent tree planting amount is tree; the unit of the standard carbon saving amount is Kg; the value of the CO2 emission reduction conversion coefficient is 0.997kg / Kw.h; the value of the equivalent tree planting amount conversion coefficient is 18.3; the value of the standard carbon saving conversion coefficient is 0.329kg / Kw.h; the actual power generation is obtained according to the photovoltaic power generation data.

[0103] Implementation Method 4: Combination Figure 1 -3 Description of this embodiment. This embodiment is a further limitation of the comprehensive analysis subsystem in the gas station photovoltaic storage charging and swapping station-level supervision system described in Embodiment 1. The specific implementation contents are as follows:

[0104] The comprehensive analysis subsystem includes a power consumption analysis module, a power generation analysis module, an online analysis module, an energy storage analysis module, an energy consumption analysis module and a revenue analysis module.

[0105] Furthermore, in one embodiment of the present invention, the power consumption analysis module is used to perform statistical analysis on the power consumption of the power-consuming equipment based on the power consumption data, and obtain power consumption analysis results; the power consumption analysis results include cumulative power consumption, power savings, power consumption in each monitoring area, and power consumption trend charts.

[0106] Furthermore, in one embodiment of the present invention, the power generation analysis module is used to perform statistical analysis on the power generation of the photovoltaic equipment based on the photovoltaic power generation data, and obtain power generation analysis results; the power generation analysis results include theoretical power generation, actual power generation and power generation trend chart.

[0107] In this implementation manner, the power generation trend diagram is obtained by comparing, analyzing and calculating the theoretical power generation with the actual power generation in combination with the weather data.

[0108] In this implementation manner, the theoretical power generation can be obtained using the following formula:

[0109] Ep = K × HA × PA / EA;

[0110] Where: Ep is the theoretical power generation, unit is kWh / a; HA is the total annual solar radiation on the horizontal surface, unit is kWh / (m 2 a), HA is obtained through PVsyst software; PA is the installed capacity of PV modules, in kWp; EA is the irradiance under standard conditions, which is a constant with a value of 1 kWh / m 2 ; K is the comprehensive efficiency coefficient, including the photovoltaic module type correction coefficient, conversion efficiency correction coefficient, photovoltaic module location correction coefficient, light utilization rate and photovoltaic power generation electrical system efficiency, etc., and the K value is 0.83; PA is the actual parameter of the equipment; the a value in the units of Ep and HA is determined according to the statistical time, which is hourly, daily, monthly or annually.

[0111] Furthermore, in one embodiment of the present invention, the online analysis module is used to perform statistical analysis on the online status of photovoltaic equipment based on the photovoltaic power generation data, and obtain the analysis results of the surplus power online connection; the analysis results of the surplus power online connection include online time, online power, online income and online trend chart.

[0112] In this implementation manner, the Internet access trend graph is obtained by comparing and analyzing and calculating the Internet access time, Internet access power and Internet access revenue in combination with the electricity price of the day.

[0113] Furthermore, in one embodiment of the present invention, the energy storage analysis module is used to perform statistical analysis on the charging and discharging conditions of the energy storage device according to the charging and discharging data of the energy storage device, and obtain energy storage analysis results; the energy storage analysis results include cumulative energy storage power, mains energy storage power, photovoltaic energy storage power, cumulative discharge power, cumulative energy storage income, cumulative energy storage cost, and energy storage and release power trend charts.

[0114] Furthermore, in one embodiment of the present invention, the energy consumption analysis module is used to perform statistical analysis on energy consumption according to the electricity consumption data and obtain energy consumption analysis results; the energy consumption analysis results include electricity budget, actual electricity bill and electricity bill over budget.

[0115] In this implementation manner, the electricity fee exceeding the budget is obtained by comparing and analyzing the budgeted electricity fee with the actual electricity fee, wherein the actual electricity fee is obtained based on the electricity consumption data.

[0116] Furthermore, in one embodiment of the present invention, the revenue analysis module is used to perform statistical analysis on the revenue of the gas station photovoltaic storage charging and swapping station based on the electricity consumption analysis results, power generation analysis results, surplus power grid-connected analysis results, energy storage analysis results and energy consumption analysis results, and obtain the revenue analysis results.

[0117] Implementation Method 4: Combination Figure 1 -3 Description of this embodiment. This embodiment is a further limitation of the intelligent control subsystem in the gas station photovoltaic storage charging and swapping station-level supervision system described in Implementation 1. The specific implementation contents are as follows:

[0118] The intelligent control subsystem includes a photovoltaic equipment control module, an energy storage equipment control module, a charging equipment control module and a battery replacement equipment control module;

[0119] The photovoltaic equipment control module is connected to the photovoltaic equipment and the photovoltaic surplus power grid-connected equipment by signal, and is used to execute the grid-connected control strategy to control the photovoltaic equipment and the photovoltaic surplus power grid-connected equipment.

[0120] The energy storage device control module is connected to the energy storage device signal and is used to execute the energy storage charging strategy and the energy storage discharging strategy to control the energy storage device;

[0121] The charging device control module is connected to the charging device signal and is used to execute the charging device control strategy to control the charging device;

[0122] The battery swapping equipment control module is connected to the battery swapping equipment signal and is used to execute the battery swapping equipment control strategy to control the battery swapping equipment.

[0123] In this embodiment, the intelligent control subsystem is used to automatically control each device, which can maximize the use of renewable energy, achieve the purpose of coordinating energy demand and production supply, and optimize resources.

[0124] Furthermore, in one embodiment of the present invention, the photovoltaic equipment control module is used to execute an online control strategy to control the photovoltaic equipment and the photovoltaic surplus power online device; the online control strategy is as follows:

[0125] Compare the current energy storage capacity of the energy storage device with the grid-connected energy storage threshold:

[0126] If the current energy storage capacity is greater than or equal to the grid-connected energy storage threshold, the grid-connected condition is met, and the photovoltaic equipment control module sends a grid-connected instruction to the photovoltaic equipment and the photovoltaic surplus power grid-connected equipment;

[0127] Otherwise, the photovoltaic device control module sends a light abandonment instruction to the photovoltaic device.

[0128] In this implementation, the Internet access control strategy is used to automatically determine whether the current photovoltaic device can access the Internet.

[0129] In this implementation, the grid-connected control strategy may also set a peak electricity price for photovoltaic equipment.

[0130] Further, in one embodiment of the present invention, the energy storage device control module is used to execute an energy storage charging strategy and an energy storage discharging strategy to control the energy storage device;

[0131] The energy storage charging strategy is as follows:

[0132] If the current city power is in the off-peak period: if the current energy storage capacity of the energy storage device is lower than the off-peak energy storage charging threshold, the energy storage device control module sends an energy storage instruction to the energy storage device, otherwise it sends an energy storage end instruction;

[0133] If the current city power is in normal period: if the current energy storage capacity of the energy storage device is lower than the normal energy storage charging threshold, the energy storage device control module sends an energy storage instruction to the energy storage device, otherwise it sends an energy storage end instruction.

[0134] If the current city electricity is in the peak period: if the current energy storage capacity of the energy storage device is lower than the peak energy storage charging threshold, the energy storage device control module sends an energy storage instruction to the energy storage device, otherwise it sends an energy storage end instruction.

[0135] The energy storage discharge strategy is as follows:

[0136] If the current city electricity is in the peak period: if the current energy storage capacity of the energy storage device is higher than the peak energy storage discharge threshold, the energy storage device control module sends a discharge instruction to the energy storage device, otherwise it sends a discharge end instruction;

[0137] If the current city power is in a power outage period: if the current energy storage capacity of the energy storage device is higher than the energy storage discharge threshold during power outage, the energy storage device control module sends a discharge instruction to the energy storage device, otherwise it sends a discharge end instruction.

[0138] If the current mains load is greater than the mains load threshold: if the current energy storage capacity of the energy storage device is higher than the energy storage discharge threshold during overload, the energy storage device control module sends a discharge instruction to the energy storage device, otherwise a discharge end instruction is sent.

[0139] Further, in one embodiment of the present invention, the charging device control module is used to execute a charging device control strategy to control the charging device;

[0140] The charging equipment control strategy is as follows:

[0141] When charging with a slow charging station, the strategy of evenly distributing the total power of the power source is adopted for charging;

[0142] When charging with a fast charging station, a demand-based charging strategy is adopted.

[0143] In this embodiment, the strategy of evenly distributing the total power of the power source, that is, the charging power of each slow charging pile is the result of evenly distributing the total power of the power source according to the number of slow charging piles, belongs to the existing conventional technology and will not be described here;

[0144] In this implementation, the on-demand allocation strategy refers to analyzing the charging power of each charging device and charging each charging device with power matching. The on-demand allocation strategy also belongs to the existing conventional technology and will not be repeated here.

[0145] Further, in one embodiment of the present invention, the battery swapping equipment control module is used to execute a battery swapping equipment control strategy to control the battery swapping equipment;

[0146] The battery swap equipment control strategy is as follows:

[0147] If the current city electricity is in the off-peak period: if the number of fully charged battery packs of the battery swapping device is less than the off-peak battery pack threshold, the battery swapping device control module sends a battery pack charging instruction to the battery swapping device, otherwise it sends a battery swapping end instruction;

[0148] If the current city power is in normal period: if the number of fully charged battery packs of the battery swapping device is less than the normal battery pack threshold, the battery swapping device control module sends a battery pack charging instruction to the battery swapping device, otherwise it sends a battery swapping end instruction.

[0149] If the current city electricity is in peak period: if the number of fully charged battery packs of the battery swapping device is less than the peak battery pack threshold, the battery swapping device control module sends a battery pack charging instruction to the battery swapping device, otherwise it sends a battery swapping end instruction.

[0150] If AC power is not used at present but energy storage equipment is used to generate electricity: if the number of fully charged battery packs of the battery swapping device is less than the battery pack threshold during energy storage power generation, the battery swapping device control module sends a battery pack charging instruction to the battery swapping device, otherwise it sends a battery swapping end instruction.

[0151] If the mains electricity is not used at present but photovoltaic equipment is used to generate electricity: if the number of fully charged battery packs of the battery swapping device is less than the battery pack threshold during photovoltaic power generation, the battery swapping device control module sends a battery pack charging instruction to the battery swapping device, otherwise it sends a battery swapping end instruction.

[0152] Implementation Method 5: Combination Figure 1 -3 Description of this implementation mode. This implementation mode further limits the gas station photovoltaic storage charging and swapping station-level supervision system described in Implementation Mode 1. The specific implementation contents are as follows:

[0153] The system also includes an information display subsystem;

[0154] The information display subsystem is used to receive the operation and management data and the comprehensive analysis results; and is used to display the current status of the photovoltaic equipment, energy storage equipment, photovoltaic surplus power grid-connected equipment, power-consuming equipment and operational equipment based on the operation and management data; and is used to display the comprehensive analysis results.

[0155] Furthermore, in one embodiment of the present invention, the information display subsystem displays the comprehensive analysis results in the form of a table, a line graph, and / or a bar graph.

[0156] In this implementation, in the information display subsystem, the following current status of the photovoltaic device is displayed:

[0157] Equipment communication status, power accumulation, battery voltage, battery current, PV1 temperature, solar power generation on the day, total charging power, voltage, low-voltage side current, high-voltage side current, load voltage, load current, mains current, mains voltage, mains frequency, mains power, mains power factor, mains reactive power, floating charge voltage, charging current, PV2 temperature, total solar power generation, power, inverter temperature, load power, mains charging current, mains TV power, equalizing charging voltage and income, etc.

[0158] In this implementation manner, in the information display subsystem, the following current status of the energy storage device is displayed:

[0159] Basic information of energy storage equipment: size, capacity, annual attenuation, operating voltage range, converter power, rated current, energy storage system efficiency, rated voltage; operating parameters of energy storage equipment: operating status (operating, standby, sleep, fault, offline), current power, accumulated energy storage, and energy storage for the day.

[0160] In this embodiment, the information display subsystem can also display the control status of the photovoltaic equipment, photovoltaic surplus power grid-connected equipment, energy storage equipment, charging equipment and battery replacement equipment by the intelligent control subsystem.

[0161] In this embodiment, the comprehensive analysis results can be displayed according to three time dimensions, that is, statistics are displayed daily, monthly or annually, and the current day's statistics are generally displayed by default. However, the energy consumption analysis results are only counted, analyzed and displayed from two time dimensions, namely, monthly or annual statistics, analysis and display. The energy consumption analysis results can display the cumulative over-budget electricity bill data for the past 10 years.

[0162] The electricity consumption trend chart, power generation trend chart, Internet access trend chart, and energy storage and release trend chart are displayed in the form of charts.

[0163] Implementation Method 6: Combination Figure 1 -3 Description of this implementation mode. This implementation mode further limits the gas station photovoltaic storage charging and swapping station-level supervision system described in Implementation Mode 1. The specific implementation contents are as follows:

[0164] The system also includes a monitoring alarm subsystem;

[0165] The monitoring and alarm subsystem includes an equipment monitoring module;

[0166] The equipment monitoring module is used to obtain the operating conditions of the photovoltaic equipment, energy storage equipment, photovoltaic surplus power grid-connected equipment, power-consuming equipment and commercial equipment, and generate operating reports; the equipment monitoring module is also used to display the operating conditions in the form of a three-dimensional model.

[0167] Further, in one embodiment of the present invention, the monitoring alarm subsystem further includes an alarm center;

[0168] The alarm center is used to obtain and store the alarm information of the photovoltaic equipment, energy storage equipment, photovoltaic surplus power grid-connected equipment, power-consuming equipment and commercial equipment; the alarm center is also used to summarize and display the alarm information.

[0169] In this embodiment, if the communication of the photovoltaic equipment, energy storage equipment, photovoltaic surplus power grid-connected equipment, power-consuming equipment and business equipment is abnormal, making a certain equipment unable to be queried, an alarm message for this equipment will be generated.

[0170] In this implementation, the alarm center can collect and display all alarm information of all devices, and support the summary and display of alarm information in the form of current day accumulation, monthly accumulation, annual accumulation or historical accumulation.

[0171] In this embodiment, the alarm center collects and stores all alarm information. The alarm center can provide a display page to display the alarm information. Not all alarm information will be displayed on the display page. For each alarm type of each alarm device, only the last alarm information is displayed. At the same time, the display page of the alarm center provides a variety of filtering conditions for querying and displaying alarm information. The filtering conditions include: alarm device, alarm description, alarm type, alarm time period, and processing status. The filtering results can be exported to an Excel table, which can present the alarm information more intuitively.

[0172] In summary, the gas station photovoltaic storage charging and swapping station-level supervision system fills the gap in the existing technology and has the following advantages:

[0173] The system adopts a unified data specification to collect the operation and management data of various equipment such as photovoltaic equipment, charging equipment and energy storage equipment, and integrates and analyzes these operation and management data, so that each equipment is no longer independent, which facilitates the unified management of various equipment in the charging and swapping station.

[0174] The system can count and display various data such as the comprehensive analysis results of the linkage of various equipment in the gas station's photovoltaic storage charging and swapping station. For example, the energy-saving benefits can be viewed, making it convenient for the managers of the gas station's photovoltaic storage charging and swapping station to calculate and manage various equipment in the charging and swapping station.

[0175] The system adopts an intelligent control subsystem to control photovoltaic equipment and photovoltaic surplus power grid-connected equipment without the need for human operation, and can achieve seamless switching between grid and off-grid, thereby ensuring the power supply reliability of the load.

[0176] The system adopts an intelligent control subsystem to control photovoltaic equipment and photovoltaic surplus power grid-connected equipment, which can ensure that the power generated by photovoltaic equipment is fully consumed, reduce the phenomenon of "abandoned light", realize reasonable distribution and intelligent scheduling of electricity, maximize the use of renewable energy, achieve the purpose of coordination between energy demand and production supply and resource optimization, improve user power quality and power supply reliability, and promote the goal of achieving green, energy-saving and maximization of station economic benefits.

[0177] The system adopts an intelligent control subsystem to control the energy storage equipment, and can shift the peak and fill the valley according to the different time periods of the city power to balance the load, realize demand-side management and response, reduce the system's dependence on the power grid, and minimize electricity expenses.

[0178] The system uses an intelligent control subsystem to control the battery swapping equipment, solving the interactive optimization problem of the battery (i.e., the battery swapping equipment) and the energy storage equipment in the microgrid (the entire charging and swapping station is regarded as a microgrid). The battery swapping equipment control strategy fully considers factors such as battery performance, power demand cycle, energy price, and power generation status, and can maximize the benefits of charging and swapping.

[0179] The system adopts an intelligent control subsystem to control the charging equipment and the battery replacement equipment, can respond quickly and smoothly to the mains power status, automatically manage charging and discharging, and ensure the safe and reliable operation of the power grid.

[0180] The system can count and analyze the power consumption of electrical equipment and obtain a power consumption trend chart, so that the management personnel of the charging and swapping station can grasp the power consumption in the station at any time and ensure the safety and stability of power consumption in the station.

[0181] The system can accurately predict the photovoltaic power generation trend chart based on the actual power generation and theoretical power generation. By comparing the theoretical power generation, actual power generation and photovoltaic power generation trend, it can help the management personnel or operation and maintenance personnel of the charging and swapping station locate the power generation differences of the photovoltaic equipment in different time periods, and perform preventive maintenance on the photovoltaic equipment accordingly.

[0182] The system can count and analyze the charging and discharging conditions and charging and discharging trends of energy storage devices, allowing managers of charging and swapping stations to understand the energy storage conditions in the station; at the same time, combined with the power consumption of the charging and swapping station in different time periods (peak, valley, and normal periods), the charging and discharging of energy storage devices can be made more reasonable.

[0183] The system is also provided with a standard integrated API interface platform, which can connect different devices and systems to facilitate the subsequent integration of more device data.

[0184] In addition to the above advantages, the system of the present invention also achieves the following beneficial effects:

[0185] 1. In the current critical period when it is difficult to apply for grid expansion and the power grid is under great pressure during the peak power consumption of sites, the comprehensive analysis results provided by the system of the present invention can provide support for Internet access and help alleviate the pressure on the grid.

[0186] 2. With the increasing number of new energy vehicles, the electricity cost of gas stations has increased significantly after the existing gas stations are equipped with charging piles and / or battery swap stations. The system described in the present invention can monitor, analyze and regulate various power-consuming equipment, energy storage equipment, photovoltaic equipment and operating equipment, which can effectively save electricity costs.

[0187] The technical solution provided by the present invention is further described in detail above through several specific implementation modes in order to highlight the advantages and benefits of the technical solution provided by the present invention. However, the several specific implementation modes described above are not intended to be used as limitations on the present invention. Any reasonable changes and improvements to the present invention, reasonable combinations of implementation modes and equivalent substitutions based on the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas station photovoltaic storage charging and swapping station-level supervision system, which is used to supervise the gas station photovoltaic storage charging and swapping station. The gas station photovoltaic storage charging and swapping station includes photovoltaic equipment, energy storage equipment, photovoltaic surplus power access equipment, power-consuming equipment and business equipment; the business equipment includes charging equipment and battery swapping equipment; it is characterized by: The system includes a data acquisition device, a comprehensive analysis subsystem, an intelligent control subsystem and an information display subsystem; The data acquisition device is used to collect the operation and business data of the photovoltaic equipment, energy storage equipment, photovoltaic surplus power grid-connected equipment, power-consuming equipment, and business equipment, as well as the weather data of the gas station photovoltaic storage charging and swapping station; the data acquisition device sends the collected data to the comprehensive analysis subsystem and the intelligent control subsystem; The comprehensive analysis subsystem is used to conduct a comprehensive analysis on the operation and management data to obtain a comprehensive analysis result; The intelligent control subsystem is used to control the operation of the photovoltaic equipment, photovoltaic surplus power grid-connected equipment, energy storage equipment, charging equipment and battery replacement equipment according to the operation and management data.

2. The gas station photovoltaic storage charging and swapping station-level supervision system according to claim 1 is characterized in that: The operation and management data include the photovoltaic power generation data of the photovoltaic equipment, the charging and discharging data of the energy storage equipment, the electricity consumption data of the gas station photovoltaic storage charging and swapping station, the photovoltaic surplus power online data of the photovoltaic equipment and the order data of the management equipment.

3. The gas station photovoltaic storage charging and swapping station-level supervision system according to claim 2 is characterized in that: The data acquisition device includes a photovoltaic equipment data acquisition module, an energy storage equipment data acquisition module, an electric equipment data acquisition module, an Internet access data acquisition module, a weather data acquisition module and an operating data acquisition module; A photovoltaic equipment data acquisition module, used to collect photovoltaic power generation data of the photovoltaic equipment; An energy storage device data acquisition module, used to collect charging and discharging data of the energy storage device; An electric equipment data collection module, used to collect the electric consumption data of the gas station solar storage charging and swapping station; An online data collection module, used to collect the online data of the photovoltaic surplus power of the photovoltaic equipment; A weather data collection module, used to collect weather data of the gas station solar energy storage charging and swapping station; the weather data includes light intensity and temperature data in the gas station solar energy storage charging and swapping station; The business data collection module is used to collect the order data of the business equipment.

4. The gas station solar storage charging and swapping station-level supervision system according to claim 3 is characterized by: The comprehensive analysis results include electricity consumption analysis results, power generation analysis results, surplus power grid-connected analysis results, energy storage analysis results, energy consumption analysis results and benefit analysis results; wherein the benefit analysis results include photovoltaic benefits, operating benefits and energy-saving benefits.

5. The gas station photovoltaic storage charging and swapping station-level supervision system according to claim 4 is characterized in that: The comprehensive analysis subsystem uses environmental protection indicators to represent the energy-saving benefits; the environmental protection indicators include CO2 emission reduction, equivalent tree planting amount and standard carbon saving, among which: CO2 emission reduction = actual power generation × CO2 emission reduction conversion coefficient; Equivalent tree planting amount = CO2 emission reduction / equivalent tree planting amount conversion factor / 40; Standard carbon saved = actual power generation × standard carbon saved conversion coefficient (0.329kg / Kw.h); Among them, the unit of the CO2 emission reduction is Kg; the unit of the equivalent tree planting amount is tree; the unit of the standard carbon saving amount is Kg; the value of the CO2 emission reduction conversion coefficient is 0.997kg / Kw.h; the value of the equivalent tree planting amount conversion coefficient is 18.3; the value of the standard carbon saving conversion coefficient is 0.329kg / Kw.h; the actual power generation is obtained according to the photovoltaic power generation data.

6. The gas station photovoltaic storage charging and swapping station-level supervision system according to claim 5 is characterized in that: The intelligent control subsystem includes a photovoltaic equipment control module, an energy storage equipment control module, a charging equipment control module and a battery replacement equipment control module; The photovoltaic equipment control module is connected to the photovoltaic equipment and the photovoltaic surplus power grid-connected equipment by signal, and is used to execute the grid-connected control strategy to control the photovoltaic equipment and the photovoltaic surplus power grid-connected equipment. The energy storage device control module is connected to the energy storage device signal and is used to execute the energy storage charging strategy and the energy storage discharging strategy to control the energy storage device; The charging device control module is connected to the charging device signal and is used to execute the charging device control strategy to control the charging device; The battery swapping equipment control module is connected to the battery swapping equipment signal and is used to execute the battery swapping equipment control strategy to control the battery swapping equipment.

7. The gas station photovoltaic storage charging and swapping station-level supervision system according to claim 6 is characterized in that: The Internet access control strategy is as follows: Compare the current energy storage capacity of the energy storage device with the grid-connected energy storage threshold: If the current energy storage capacity is greater than or equal to the grid-connected energy storage threshold, the grid-connected condition is met, and a grid-connected instruction is sent to the photovoltaic device and the photovoltaic surplus power grid-connected device; Otherwise, a light abandonment instruction is sent to the photovoltaic device.

8. The gas station photovoltaic storage charging and swapping station-level supervision system according to claim 6 is characterized in that: The energy storage charging strategy is as follows: If the current city power is in the off-peak period: if the current energy storage capacity of the energy storage device is lower than the off-peak energy storage charging threshold, send an energy storage instruction to the energy storage device, otherwise send an energy storage end instruction; If the current city power is in normal period: if the current energy storage capacity of the energy storage device is lower than the normal energy storage charging threshold, send an energy storage instruction to the energy storage device, otherwise send an energy storage end instruction; If the current city electricity is in the peak period: if the current energy storage capacity of the energy storage device is lower than the peak energy storage charging threshold, send an energy storage instruction to the energy storage device, otherwise send an energy storage end instruction; The energy storage discharge strategy is as follows: If the current city electricity is in the peak period: if the current energy storage capacity of the energy storage device is higher than the peak energy storage discharge threshold, a discharge instruction is sent to the energy storage device, otherwise a discharge end instruction is sent; If the current city power is in a power outage period: if the current energy storage capacity of the energy storage device is higher than the energy storage discharge threshold during power outage, a discharge instruction is sent to the energy storage device, otherwise a discharge end instruction is sent; If the current mains load is greater than the mains load threshold: if the current energy storage capacity of the energy storage device is higher than the energy storage discharge threshold during overload, a discharge instruction is sent to the energy storage device, otherwise a discharge end instruction is sent.

9. The gas station photovoltaic storage charging and swapping station-level supervision system according to claim 7 is characterized in that: The charging equipment control strategy is as follows: When charging with a slow charging station, the strategy of evenly distributing the total power of the power source is adopted for charging; When charging with a fast charging station, a demand-based charging strategy is adopted.

10. The gas station photovoltaic storage charging and swapping station-level supervision system according to claim 8 is characterized in that: The battery swap equipment control strategy is as follows: If the current city electricity is in the off-peak period: if the number of fully charged battery packs of the battery swapping device is less than the off-peak battery pack threshold, a battery pack charging instruction is sent to the battery swapping device, otherwise a battery swapping end instruction is sent; If the current city power is in the normal period: if the number of fully charged battery packs of the battery swapping device is less than the normal battery pack threshold, a battery pack charging instruction is sent to the battery swapping device, otherwise a battery swapping end instruction is sent; If the current city electricity is in the peak period: if the number of fully charged battery packs of the battery swapping device is less than the peak battery pack threshold, a battery pack charging instruction is sent to the battery swapping device, otherwise a battery swapping end instruction is sent; If the mains electricity is not used at present but the energy storage device is used for power generation: if the number of fully charged battery packs of the battery swapping device is less than the battery pack threshold value during energy storage power generation, a battery pack charging instruction is sent to the battery swapping device, otherwise a battery swapping end instruction is sent; If the mains electricity is not used at present but photovoltaic equipment is used to generate electricity: if the number of fully charged battery packs of the battery swapping device is less than the battery pack threshold during photovoltaic power generation, a battery pack charging instruction is sent to the battery swapping device, otherwise a battery swapping end instruction is sent.

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