Disclosure of Invention
In order to solve the problems of the traditional power distribution, the invention aims to provide a charging power real-time dispatching distribution method for a charging station, which can realize the charging power real-time dispatching distribution so as to increase the number and the power of charging piles, improve the utilization rate and the charging service capability of the charging station, effectively improve the user speed experience and improve the charging station revenue.
The invention realizes the above purpose through the following technical scheme:
a method of real-time scheduling distribution of charging power of a charging station, the method comprising the steps of:
setting a controllable power capacity pool PP of the charging station on the charging station management platform, wherein the capacity pool is used for representing the maximum additional power which the charging station can currently allocate to the charging pile;
setting the lowest rated power L and the highest rated power H for each charging pile on a charging station management platform to serve as a power regulation range of a single charging pile;
Collecting the working power CP charged by each charging pile in the charging station and the required power VP of a vehicle connected with the working power CP in real time through a sensor or a control system of the charging pile;
Calculating the residual power LPP of the adjustable power capacity pool PP of the charging station;
Setting power AP adjusted each time, and adjusting rated power of the charging pile according to residual power LPP with adjustable power capacity; when the required power VP of the charging pile exceeds the current distributed power, deciding whether to increase the power distribution of the charging pile according to the residual power LPP and the power adjusted each time;
When the charging pile completes the charging task or the vehicle is disconnected, the charging pile releases the power constraint and returns to the lowest rated power L.
According to the method for real-time scheduling and distributing of charging power of a charging station provided by the invention, a controllable power capacity pool PP of the charging station is set on a charging station management platform, and the method comprises the following steps:
determining theoretical maximum output power of the charging station according to the distribution capacity of the charging station;
setting an adjustable power capacity pool PP based on the power distribution capacity, fault tolerance factors and real-time and accuracy of monitoring data of the charging station;
After the adjustable power capacity pool PP is set, the running state and the power grid load condition of each charging pile are monitored in real time through a charging station management platform, and power distribution is dynamically adjusted according to actual conditions;
if the power distribution of a certain charging pile is unreasonable or the power grid load is too high, the size of the adjustable power capacity pool PP is timely adjusted or power is redistributed through the charging station management platform, so that stable operation of the system and maximization of charging efficiency are ensured.
According to the method for real-time dispatching and distributing of charging power of the charging station, when the lowest rated power L and the highest rated power H are set for each charging pile on the charging station management platform, the regulation and control range of the charging pile is a power interval from the lowest rated power L to the highest rated power H of the charging pile;
setting the highest rated power H of the charging pile according to the rated power calibrated on the charging pile equipment, wherein the lowest rated power L of the charging pile represents the rated power which can be adjusted downwards by the lowest power L of the charging pile;
wherein, the sum of the lowest rated power L of all the charging piles does not exceed the adjustable power capacity pool PP of the charging station, which is expressed as the following formula:
。
according to the method for real-time dispatching and distributing of charging power of the charging station, provided by the invention, if charging piles with the same power are arranged, the lowest rated power L of the charging piles is configured according to the following formula:
where n is the total number of piles.
According to the method for real-time dispatching and distributing of the charging power of the charging station, in the charging process of the charging pile, the vehicle reports the power required by the vehicle to the charging pile in real time through the communication between the vehicle end and the charging pile end; and acquiring the charged working power CP and the required power VP of the vehicle connected with the charging pile through the charging pile, and reporting the working power CP to the cloud platform through an MQTT protocol in real time.
According to the method for real-time scheduling and distributing of charging power of a charging station provided by the invention, the calculation of the residual power LPP of a controllable power capacity pool PP of the charging station comprises the following steps:
Calculating the occupied power capacity CPP of each charging pile, judging whether the charging power CP exceeds the minimum rated power L, and if so, taking the occupied power capacity as the charging power CP; if the minimum rated power L is not exceeded, the occupied power capacity is the minimum rated power L, which is expressed as the following formula:
CPP＝max(CP,L)
Wherein max is a maximum function in the parameters;
The total reserved/occupied power capacity SCPP is calculated as the following formula:
the remaining LPP of the available power capacity pool PP is calculated as the following formula:
LPP＝PP-SCPP。
According to the method for real-time scheduling and distributing of charging power of the charging station, when the power AP adjusted each time is set, the power AP refers to the sum of the power adjusted each time downwards and upwards, and is set as the lowest rated power of the charging pile by default.
According to the method for real-time scheduling and distributing of charging power of the charging station, which is provided by the invention, the rated power of the charging pile is adjusted according to the residual power LPP with adjustable power capacity, and the method comprises the following steps:
Power down total schedule:
When the remaining power LPP of the power capacity pool PP remains 0, which indicates that the power capacity pool PP is insufficient, the rated power of the charging pile needs to be adjusted downwards, the sum is adjusted to be the power AP, and the adjustment includes:
obtaining charging piles to be adjusted, wherein the number of the charging piles is m;
Acquiring a charging pile with charging power CP being larger than the lowest rated power L as an adjustment object;
the value CLP for each charging peg above the lowest power is calculated as the following equation:
CLP＝CP-L
wherein CP is the charging power of the pile;
summing, obtaining a sum SLP of the charging pile exceeding the lowest rated power L, wherein the sum SLP is expressed as the following formula:
The adjustment CAP of each charging pile is adjusted according to the following formula, and each charging pile is adjusted proportionally:
the total adjustment after adjustment must be equal to or greater than AP, expressed as the following formula:
after the down-regulation is completed, the remaining LPP of the power capacity pool PP is updated according to the down-regulation amount.
According to the method for real-time scheduling and distributing of charging power of the charging station, which is provided by the invention, the rated power of the charging pile is adjusted according to the residual power LPP with adjustable power capacity, and the method comprises the following steps:
power up total schedule:
When the residual power LPP of the power capacity pool PP is more than 2 times of the power AP, the allowance can be scheduled to increase the power of the charging pile;
obtaining charging piles to be adjusted, wherein the number of the charging piles is m;
Acquiring the required power VP of the vehicle, which is not met by the charging power CP, and is smaller than the highest rated power H of the charging pile as an adjustment object;
Calculating a power value CAP required to be lifted by each charging pile;
The power AP is averaged to each charging pile, expressed as the following equation:
the rated power of the charging pile after the up-regulation is smaller than the required power VP and the maximum rated power (H), which are respectively expressed as the following formulas:
CAPb＝VP-CP
CAPc＝H-CP
The min function is the minimum value in the parameters, which needs to be taken as the minimum value of CAPa、CAPb、CAPc, and is expressed as the following formula:
CAP＝min(CAPa,CAPb,CAPc)
And (3) up-regulating each charging pile, wherein the total regulating amount meets the following formula:
after the up-regulation is completed, the margin (LPP) of the power capacity pool PP is updated according to the up-regulation amount.
According to the method for real-time scheduling and distributing of charging power of the charging station provided by the invention, the charging pile releases power constraint and recovers to the lowest rated power L, and the method comprises the following steps:
the charging pile is used for providing a power setting protocol with a preset range value to the outside, the charging state can be continuously monitored in the charging process, and after the charging pile detects that the charging of the vehicle is finished, charging bill information is reported to the cloud platform through the MQTT protocol; meanwhile, the cloud platform verifies and confirms the bill information reported by the charging pile, and if the bill information is correct, the cloud platform stores the bill information into a database for subsequent inquiry and settlement;
After confirming bill information, the cloud platform finds rated power information registered on the platform according to the serial number or the identification of the charging pile, and issues rated power registered on the platform to the charging pile through an MQTT protocol, so that the charging pile is required to recover to the lowest rated power L registered by the charging pile;
after receiving the instruction issued by the cloud platform, the charging pile analyzes the instruction content and executes corresponding operation, adjusts the power output to the lowest rated power L, and enters a standby or idle state.
Therefore, compared with the prior art, the method provided by the invention has the following beneficial effects:
1. promote available electric pile quantity: according to the invention, the number of the charging piles can be increased by a real-time scheduling technology of the charging power, and the problem of tripping and power failure due to overlarge charging total power is not required. Many charging stations currently have no idle charging post basically when busy, but the distribution power of the charging stations is always rich because of different power requirements of different brands of vehicles. After the number of the charging piles is increased, the system can automatically distribute the charging power of each charging pile, control the upper limit of the power, enhance the concurrent charging capacity of the charging station and simultaneously serve more vehicles in busy hours.
2. The rated power of the charging pile is improved, and the user experience is improved: according to the invention, through the real-time scheduling technology of the charging power, the charging equipment has dynamic rated power, the highest rated power of the equipment can be integrally improved, and the problem of tripping and power failure due to overlarge charging total power is not required. If the charging power is updated from 60kW to 120kW, the system can meet the charging experience of vehicles with larger required power according to the charging power requirement of actual vehicles, and the charging experience of the vehicles is accelerated. Meanwhile, because of shortening the charging time, the charging pile resource can be quickly released to wait for the next user.
3. Safe control means: the invention introduces the setting of the minimum rated power, reserves a certain amount of power space for ensuring each charging pile, can randomly fluctuate in the power range, does not influence the change of the capacity pool, avoids the frequent dispatching of the power capacity pool and reduces the risk of failure.
4. Real-time responsiveness: according to the invention, the working power and the vehicle demand power of each charging pile in the charging station are collected in real time through the sensor or the control system of the charging pile, so that the system can rapidly respond to the change of the charging demand. And calculating the residual power of the adjustable power capacity pool in real time, and deciding whether to increase the power distribution of the charging pile according to the residual power and the power adjusted each time, so that the real-time scheduling of the charging power is realized.
5. Flexibility and scalability: the invention sets the lowest rated power and the highest rated power for each charging pile, and forms a flexible power regulation and control range, so that the charging pile can carry out power regulation according to real-time requirements. The adjustable power capacity pool set on the charging station management platform allows the charging station to be dynamically adjusted within the capacity range, and expandability is provided for future charging demand growth.
6. Optimizing resource utilization: according to the invention, the power distribution is carried out according to the required power of the charging pile and the residual power of the adjustable power capacity pool, so that the reasonable utilization of charging resources is ensured, and the resource waste is avoided. After the charging pile completes the charging task or the vehicle is disconnected, the power constraint can be released and the lowest rated power can be restored, so that preparation is provided for other charging demands.
The invention is described in further detail below with reference to the drawings and the detailed description.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1 to 3, the present invention provides a method for real-time scheduling and distributing charging power of a charging station, the method comprising the following steps:
Step S1, a controllable power capacity pool PP of the charging station is set on the charging station management platform, wherein the capacity pool is used for representing the maximum additional power which the charging station can currently use for distributing to the charging piles. The present embodiment may determine the regulated power capacity pool PP according to the hardware configuration of the charging station, the power supply capability, and other factors.
Step S2, setting the lowest rated power L and the highest rated power H for each charging pile on a charging station management platform to serve as a power regulation range of a single charging pile;
step S3, collecting the working power CP charged by each charging pile in the charging station and the required power VP of a vehicle connected with the working power CP in real time through a sensor or a control system of the charging pile;
Step S4, calculating the residual power LPP of the adjustable power capacity pool PP of the charging station;
Step S5, setting power AP adjusted each time, and adjusting rated power of the charging pile according to residual power LPP with adjustable power capacity; when the required power VP of the charging pile exceeds the current distributed power, deciding whether to increase the power distribution of the charging pile according to the residual power LPP and the power adjusted each time; wherein, setting the power of each adjustment needs to take into account a plurality of factors, such as the response time of the charging pile, the charging demand of the vehicle, etc.
And S6, when the charging pile completes the charging task or the vehicle is disconnected, the charging pile releases the power constraint and returns to the lowest rated power L.
In the step S1, the setting of the controllable power capacity pool PP of the charging station on the charging station management platform includes:
determining theoretical maximum output power of the charging station according to the distribution capacity of the charging station;
An adjustable power capacity pool PP is set based on the power distribution capacity, fault tolerance factors and real-time and accuracy of monitoring data of the charging station. For example, if the power distribution capacity of the charging station is 1000kW, the PP may be set to 900kW to 950kW. In this range, the platform can dynamically adjust the power distribution of each charging pile according to real-time charging requirements and grid load conditions.
After the adjustable power capacity pool PP is set, the running state and the power grid load condition of each charging pile are monitored in real time through a charging station management platform, and power distribution is dynamically adjusted according to actual conditions;
if the power distribution of a certain charging pile is unreasonable or the power grid load is too high, the size of the adjustable power capacity pool PP is timely adjusted or power is redistributed through the charging station management platform, so that stable operation of the system and maximization of charging efficiency are ensured.
In this embodiment, the fault tolerance factors include:
the real-time uploading of the monitoring data is insufficient: in setting up the power capacity pool, it is necessary to take into account delays that may occur during data transmission. For example, long computation times, network delays, etc. may result in data received by the system not being up-to-date, thereby affecting the accuracy of the power allocation.
Pile metering is not accurate enough, and has errors: errors in the metering system of the charging stake may exist, which also affects the accuracy of the power distribution. Therefore, in setting the power capacity pool, it is necessary to take this error range into consideration and appropriately lower the upper limit of the power allocation.
Issue control and validation are not timely: a certain time is required for the control command to be sent from the platform to the charging stake and to take effect. During this time, if the charging demand changes, it may lead to unreasonable power distribution. Therefore, a certain time margin needs to be reserved to ensure timely validation of the control instructions.
In this embodiment, the total power capacity pool of the charging station is set according to the power distribution of the charging station, and is recommended to be set to 90% -95% of the power distribution capacity of the charging station, which is to ensure that the system has a certain redundant space so as to cope with factors such as emergency and equipment aging. Setting 100% is not recommended based on fault tolerance consideration, and accuracy of uploading data, instantaneity of transmission, response time of control instructions and the like are mainly considered: a) The uploading real-time performance of the monitoring data is insufficient, such as long calculation time, network delay and the like; b) Pile metering is not accurate enough and has errors; c) And issuing control and effectiveness are not timely.
In the step S2, when the lowest rated power L and the highest rated power H are set for each charging pile on the charging station management platform, the regulation range of the charging pile is the power interval from the lowest rated power L to the highest rated power H of the charging pile; the minimum rated power L of the charging pile should ensure that the charging pile still maintains a certain charging performance, so as to provide basic charging service for the electric vehicle, and the minimum rated power needs to be set by considering the technical specification of the charging pile, the minimum working efficiency and the minimum power required for maintaining stable charging.
According to the rated power calibrated on the charging pile equipment, the highest rated power H of the charging pile is set, the lowest rated power L of the charging pile represents the rated power which can be adjusted downwards at the lowest level of the charging pile, and the lowest charging performance of the charging pile can be ensured not to be too low.
Wherein, the sum of the lowest rated power L of all the charging piles does not exceed the adjustable power capacity pool PP of the charging station, which is expressed as the following formula:
。
In this embodiment, if the charging piles are all equipped with the same power in terms of a general charging station, the lowest rated power L of the charging piles may be configured according to the following formula:
PP≥L*n
where n is the total number of piles.
In the step S3, in the charging process of the charging pile, the vehicle reports the power required by the vehicle to the charging pile in real time through the communication between the vehicle end and the charging pile end; the charging pile is used for acquiring the charged working power CP and the required power VP of the vehicle connected with the charging pile, and the charging working power CP and the required power VP of the vehicle are reported to the cloud platform in real time through the Internet of things (MQTT protocol).
In the above step S4, calculating the remaining power LPP of the charging station adjustable power capacity pool PP includes:
Calculating the occupied power capacity CPP of each charging pile, judging whether the charging power CP exceeds the minimum rated power L, and if so, taking the occupied power capacity as the charging power CP; if the minimum rated power L is not exceeded, the occupied power capacity is the minimum rated power L, which is expressed as the following formula:
CPP＝max(CP,L)
Wherein max is a maximum function in the parameters;
The total reserved/occupied power capacity SCPP is calculated as the following formula:
the remaining LPP of the available power capacity pool PP is calculated as the following formula:
LPP＝PP-SCPP。
When setting the power AP for each adjustment, the power AP refers to the sum of the power for each down and up adjustment, and the default setting is the lowest rated power of the charging pile, which is generally not too small, and may cause the adjustment to be too frequent.
Specifically, the AP represents an upper or lower limit value of the change in the power of the charging pile at each adjustment, and its size will directly affect the amplitude and frequency of the adjustment. If the AP is set too small, it may cause the power of the charging pile to be adjusted too frequently, which may not only increase the communication burden of the system, but may also affect the stability and efficiency of the charging process. Conversely, if the AP is set too large, although the frequency of adjustment may be reduced, it may also result in insufficient fine power distribution to meet the actual charging demand of the vehicle. Therefore, in setting the AP, a plurality of factors including a rated power range of the charging pile, an actual charging demand of the vehicle, a load condition of the power grid, and communication capability and processing capability of the system need to be comprehensively considered. In general, it is recommended to set the AP to a certain proportion of the rated power of the charging pile, such as 10% or 20%, to ensure that the amplitude of adjustment is moderate, neither too frequent nor too rough.
In addition, the AP can be dynamically adjusted according to the actual operation condition and the data analysis result. For example, when the grid load is low or the vehicle charging demand is stable, the value of AP may be increased appropriately to reduce the frequency of adjustment; when the grid load is high or the vehicle charging demand fluctuates greatly, the value of the AP needs to be reduced appropriately to ensure the stability and safety of the system.
In the step S5, adjusting the rated power of the charging pile according to the remaining power LPP with the adjustable power capacity, including:
Power down total schedule:
When the remaining power LPP of the power capacity pool PP remains 0, which indicates that the power capacity pool PP is insufficient, the rated power of the charging pile needs to be adjusted downwards, the sum is adjusted to be the power AP, and the adjustment includes:
obtaining charging piles to be adjusted, wherein the number of the charging piles is m;
Acquiring a charging pile with charging power CP being larger than the lowest rated power L as an adjustment object;
the value CLP for each charging peg above the lowest power is calculated as the following equation:
CLP＝CP-L
wherein CP is the charging power of the pile;
summing, obtaining a sum SLP of the charging pile exceeding the lowest rated power L, wherein the sum SLP is expressed as the following formula:
The adjustment CAP of each charging pile is adjusted according to the following formula, and each charging pile is adjusted proportionally:
The total adjustment after adjustment must be equal to or greater than AP (the down-adjustment may be more than a bit), expressed by the following formula:
after the down-regulation is completed, the remaining LPP of the power capacity pool PP is updated according to the down-regulation amount.
In the step S5, adjusting the rated power of the charging pile according to the remaining power LPP with the adjustable power capacity, including:
power up total schedule:
When the remaining power LPP of the power capacity pool PP is more than 2 times of the power AP (total power adjusted once), the remaining power can be scheduled to raise the power of the charging pile (the total power raised as AP), and the overall charging efficiency is raised.
Obtaining charging piles to be adjusted, wherein the number of the charging piles is m;
the acquisition of the charging power CP does not satisfy the required power VP of the vehicle and is smaller than the highest rated power H of the charging pile as the adjustment target, because their required power is not satisfied, and can be adjusted upward.
Calculating a power value CAP required to be lifted by each charging pile;
in order to consider fairness (not adjusting according to the difference ratio of the required power to the current power, and avoiding that the handlebar adjustment increment of high demand is all occupied), the basic principle is to average the power AP to each charging pile, so that generally each pile is adjusted upwards, expressed as the following formula:
the rated power of the charging pile after the up-regulation is smaller than the required power VP and the maximum rated power (H), which are respectively expressed as the following formulas:
CAPb＝VP-CP
CAPc＝H-CP
The min function is the minimum value in the parameters, which needs to be taken as the minimum value of CAPa、CAPb、CAPc, and is expressed as the following formula:
CAP＝min(CAPa,CAPb,CAPc)
And (3) up-regulating each charging pile, wherein the total regulating amount meets the following formula:
after the up-regulation is completed, the margin (LPP) of the power capacity pool PP is updated according to the up-regulation amount.
In the step S6, the charging pile releases the power constraint and returns to the lowest rated power L, including:
the charging pile is used for providing a power setting protocol with a preset range value to the outside, the charging state can be continuously monitored in the charging process, and after the charging pile detects that the charging of the vehicle is finished, charging bill information is reported to the cloud platform through the MQTT protocol; meanwhile, the cloud platform verifies and confirms the bill information reported by the charging pile, and if the bill information is correct, the cloud platform stores the bill information into a database for subsequent inquiry and settlement;
After confirming bill information, the cloud platform finds rated power information registered on the platform according to the serial number or the identification of the charging pile, and issues rated power registered on the platform to the charging pile through an MQTT protocol, so that the charging pile is required to recover to the lowest rated power L registered by the charging pile;
after receiving the instruction issued by the cloud platform, the charging pile analyzes the instruction content and executes corresponding operation, adjusts the power output to the lowest rated power L, and enters a standby or idle state.
In a specific application, in order to monitor the real-time charging power CP of each charging pile and the required power VP of the vehicle in the charging station and implement real-time reporting of these data to the cloud platform, the embodiment constructs a system architecture including the charging pile, the vehicle, an internet of things (IoT) communication network and the cloud platform.
The charging pile comprises an interface for communicating with the vehicle, such as CAN, OBD or other standard interfaces, so as to receive the required power (VP) sent by the vehicle; the charging pile is internally provided with an internet of things (IoT) module, supports an MQTT protocol and is used for sending CP and VP data to the cloud platform.
Among other things, the vehicle is able to calculate or determine its current power demand (VP), which is typically based on battery status, charging strategy, and the like. The vehicle includes an interface to communicate with the charging stake to transmit VP data.
The internet of things (IoT) communication network sends CP and VP data to an MQTT proxy (Broker) for an IoT device (i.e., an IoT module of a charging pile) that uses an MQTT protocol, and the MQTT proxy is responsible for receiving, processing and forwarding messages from the charging pile, ensuring that the IoT communication network has sufficient bandwidth and stability to support real-time data transmission.
The cloud platform is provided with a data storage function and is used for storing CP and VP data so as to facilitate subsequent analysis and inquiry. The cloud platform may provide an API or Web interface for a user or third party system to query and monitor the real-time status of the charging station. The cloud platform can integrate data analysis tools to process and analyze the CP and VP data to optimize charging policies, predict charging requirements, and the like.
In the embodiment, the encryption technology is also used for protecting the data security in the MQTT communication process, so that the cloud platform is ensured to have enough security protection measures, such as a firewall, an intrusion detection system and the like; authentication and authorization management are performed on user access to ensure that data is not accessed by unauthorized users.
In practical application, the embodiment provides a charging pile power up-regulation case, which includes:
Assuming a charging station distribution of 900kW, a schedulable power capacity pool PP is set to 840kW, 14 charging piles (C1, C2,..and C14, respectively) of 120kW rated power (HP) are provided, and according to the above step S2, the lowest rated power L may be set to 60kW at the platform. The total working power of the current charging station is 500kW, the charging piles in operation completely meet the requirement that the power is in operation, and the power capacity pool is available in the remaining 340 kW.
If charging pile C1 requests charging, the required power is 130kW. At the beginning, charging at 60kW of power (LP) will be limited, since the required power is greater than the lowest rated power, which will trigger the power up-regulation service of the platform to up-regulate the current charging pile. Since the highest rated power of the charging pile is 120kW, it is only up to 120kW at maximum, since the power capacity pool remains 340kW, the balance being sufficient, it can be instructed to adjust the rated power to 120kW. Assuming that the margin is insufficient, the transmission is performed by the margin.
In summary, the invention can increase the number of the charging piles by the real-time scheduling technology of the charging power, and the problem of tripping and power failure due to overlarge total charging power is not required. Many charging stations currently have no idle charging post basically when busy, but the distribution power of the charging stations is always rich because of different power requirements of different brands of vehicles. After the number of the charging piles is increased, the system can automatically distribute the charging power of each charging pile, control the upper limit of the power, enhance the concurrent charging capacity of the charging station and simultaneously serve more vehicles in busy hours.
According to the invention, through the real-time scheduling technology of the charging power, the charging equipment has dynamic rated power, the highest rated power of the equipment can be integrally improved, and the problem of tripping and power failure due to overlarge charging total power is not required. If the charging power is updated from 60kW to 120kW, the system can meet the charging experience of vehicles with larger required power according to the charging power requirement of actual vehicles, and the charging experience of the vehicles is accelerated. Meanwhile, because of shortening the charging time, the charging pile resource can be quickly released to wait for the next user.
The invention introduces the setting of the minimum rated power, reserves a certain amount of power space for ensuring each charging pile, can randomly fluctuate in the power range, does not influence the change of the capacity pool, avoids the frequent dispatching of the power capacity pool and reduces the risk of failure. According to the invention, the working power and the vehicle demand power of each charging pile in the charging station are collected in real time through the sensor or the control system of the charging pile, so that the system can rapidly respond to the change of the charging demand. And calculating the residual power of the adjustable power capacity pool in real time, and deciding whether to increase the power distribution of the charging pile according to the residual power and the power adjusted each time, so that the real-time scheduling of the charging power is realized.
The invention sets the lowest rated power and the highest rated power for each charging pile, and forms a flexible power regulation and control range, so that the charging pile can carry out power regulation according to real-time requirements. The adjustable power capacity pool set on the charging station management platform allows the charging station to be dynamically adjusted within the capacity range, and expandability is provided for future charging demand growth.
According to the invention, the power distribution is carried out according to the required power of the charging pile and the residual power of the adjustable power capacity pool, so that the reasonable utilization of charging resources is ensured, and the resource waste is avoided. After the charging pile completes the charging task or the vehicle is disconnected, the power constraint can be released and the lowest rated power can be restored, so that preparation is provided for other charging demands.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.