Energy management system for mining / construction machines

Abstract

Embodiments of the disclosure relate to an energy management system (EMS) for mining / construction machines The EMS (100) receives a power generation information, a first charging information and a second charging information. The power generation information relates to a power source (200), the first charging information relates to a first mining / construction machine (300) in a charging state, and the second charging information relates to a second mining / construction machine (300´) in a non- charging state. Based on such received information and data, the EMS 100 changes at least one of a power generation of the power source (200), a charging configuration for the first mining / construction machine (300), and a charging configuration for the second mining / construction machine (300´). Furthermore, embodiments of the disclosure also relate to corresponding methods.

Description

[0001] ENERGY MANAGEMENT SYSTEM FOR MINING / CONSTRUCTION MACHINES

[0002] Technical Field

[0003] The disclosure relates to an energy management system for mining / construction machines. Furthermore, the disclosure also relates to a corresponding method.

[0004] Background

[0005] Electrified mining / construction machines and vehicles provide an opportunity to reduce the environmental footprint and create a healthier work environment in mining / construction environments.

[0006] The electrified mining / construction machine is driven by one or more electric motors which in turn may be powered by an electric grid system and / or an on-board energy storage system (ESS) comprising e.g., battery packs etc. Compared to diesel machines, the electrified mining / construction machines are emission free and can hence bring considerable savings, especially for ventilation and cooling, in mining / construction environments.

[0007] However, the electrified mining / construction machines need electrical power for their functioning and operation. That is, for powering electrical motors, batteries, etc. of the electrified mining / construction machines. In this respect charging stations are provided at mining / construction environments. Thus, the mining / construction machine can charge its batteries and other energy storage units at the charging stations.

[0008] The charging station comprises an input connected to a power supply system such as a power grid for receiving an input power. Furthermore, the charging station also comprises an output to which the mining / construction machine can be connected and thereby being charged with electrical power.

[0009] For efficient energy use at the charging stations an energy management system or arrangement is commonly provided at a substation of an electrical network. The energy management system is configured to oversee and manage the overall energy usage in the electrical network including charging stations. The energy management system is also configured to oversee and manage the available energy at the electrical network.

[0010] Summary

[0011] An objective of embodiments of the disclosure is to provide a solution which mitigates or solves the drawbacks of conventional solutions.

[0012] Another objective of embodiments of the disclosure is to present an energy management system for charging stations providing improved energy utilization compared to conventional solutions.

[0013] According to a first aspect of the disclosure, the above mentioned and other objectives are achieved with an energy management system, EMS, configured to: receive at least one power generation information, PGI, of at least one power source connected to at least one charging station and configured to provide power to the charging station; receive at least one first charging information for at least one first mining / construction machine when being charged by the charging station in a charging state; receive at least one second charging information for at least one second mining / construction machine when being located in a field in a non-charging state; and change at least one of a power generation of the power source, a charging configuration for the first mining / construction machine, and a charging configuration for the second mining / construction machine based on the PGI, the first charging information and the second charging information.

[0014] The first mining / construction machine is hence charged by the charging station, and the first mining / construction machine is therefore in a charging state. This is contrary to the second mining / construction machine which is located in the field and hence is not charging by the charging station, i.e., in a non-charging state. Therefore, at a certain time instance, the first mining / construction machine is being charged by the charging station while the second mining / construction machine is not being charged by the charging station. It is understood that any of the power generation of the power source and / or a charging configuration for the first mining / construction machine and / or a charging configuration for the second mining / construction machine is changed according to the disclosed solution.

[0015] An advantage with an EMS according to the first aspect is that by considering PGI together with the first charging information and the second charging information, the available energy / power at the charging station may be optimised in terms of power and energy requirement, such as peak and reserve energy requirement, for efficient energy management. That is, a matching of the required energy to available energy is provided by the disclosed EMS for reliable energy supply. This among other things means that the mining / construction machines may be charged and scheduled to be charged with available energy / power when necessary in an energy efficient manner.

[0016] In an implementation form of an EMS according to the first aspect, the PGI comprises: available power sources, an available power in a power grid, an available power in a battery energy storage system, BESS, and a renewable power generation.

[0017] An advantage with this implementation form is that these PGIs are important for determining the available power and energy at the charging station. Thus, the utilization and reliability of energy can be further improved.

[0018] In an implementation form of an EMS according to the first aspect, the first charging information comprises: a SoC of a battery in the first mining / construction machine, a charging power and a charging pattern associated with the first mining / construction machine.

[0019] An advantage with this implementation form is that mentioned first charging information will impact the power needed by the first mining / construction machine when being charged by the charging station. Thus, the first charging information impacts the output power needed at the charging station which in turn have implications for the matching of input power and output power for optimized energy utilization. In an implementation form of an EMS according to the first aspect, the second charging information comprises: a SoC of a battery in the second mining / construction machine, a distance for the second mining / construction machine to a charging station, and a work schedule of the second mining / construction machine.

[0020] An advantage with this implementation form is that mentioned second charging information will impact the power needed by the second mining / construction machine when being charged at the charging station in a later time instance. Thus, the second charging information also impacts the output power needed at the later time instance which in turn have implications for the forecast of matching of input power and output power for optimized energy utilization.

[0021] In an implementation form of an EMS according to the first aspect, the charging configuration for the first mining / construction machine comprises at least one of: a charging power, a charging pattern, and a charging duration.

[0022] These aspects of the charging configuration for the first mining / construction machine are relevant to change for optimized energy utilization.

[0023] In an implementation form of an EMS according to the first aspect, the charging configuration for the second mining / construction machine comprises at least one of: a charging schedule, and a location of a charging station.

[0024] These aspects of the charging configuration for the second mining / construction machine are relevant to change for optimized energy utilization.

[0025] In an implementation form of an EMS according to the first aspect, the EMS is configured to: change at least one of the power generation of the power source, the charging configuration for the first mining / construction machine, and the charging configuration for the second mining / construction machine further based on a first load profile of the first mining / construction machine and a second load profile of the second mining / construction machine. The load profiles of the mining / construction machines will also impact the power needed at the charging station. Hence, the load profiles may also be considered for the matching of input power and output power for optimized energy utilization.

[0026] In an implementation form of an EMS according to the first aspect, the EMS is configured to: receive at least one electrical measurement information, EMI, of the power source; and change at least one of the power generation of the power source, the charging configuration for the first mining / construction machine, and the charging configuration for the second mining / construction machine further based on the EMI.

[0027] An advantage with this implementation form is that the EMI of the power source gives useful information about the power availability of the power source and thus directly information about the power supplied by the power source to the charging station.

[0028] In an implementation form of an EMS according to the first aspect, the EMI comprises any of: a voltage measurement, a current measurement, a power measurement, and a reactive power measurement.

[0029] These are relevant measurements from which the condition of the power source can derived.

[0030] In an implementation form of an EMS according to the first aspect, the EMS is configured to: receive at least one forecast of produced power, FPP, of the power source; and change at least one of the power generation of the power source, the charging configuration for the first mining / construction machine, and the charging configuration for the second mining / construction machine further based on the FPP.

[0031] The FPP of the power source gives information about the power that will be produced by the power source in the future and thus directly information about the available power that will be delivered to the charging station in future scenarios. Thereby, the EMS may take measures to adapt the charging schedule at the charging station as well as for the vehicle in the field to ensure energy balance in forecasted time.

[0032] In an implementation form of an EMS according to the first aspect, the power source is connected to the charging station via a substation.

[0033] An advantage with this implementation form is that the EMS can also consider power sources which are not connected to the charging station.

[0034] In an implementation form of an EMS according to the first aspect, the EMS comprises: a first sub-device arranged in a substation, a second sub-device arranged in the charging station, and third sub-devices arranged in the first mining / construction machine and the second mining / construction machine, respectively.

[0035] Thereby, a distributed EMS is provided being arranged in a plurality of separate standalone devices. The advantage is that the distributed EMS can combine power sources, charging stations and mining machine which can be located electrically far remote each other.

[0036] In an implementation form of an EMS according to the first aspect, the first sub-device is configured to transmit a request to the second sub-device, the request indicating a change in the charging configuration for the first mining / construction machine; and the first sub-device is configured to receive a response from the second subdevice, the response indicating a possibility of changing the charging configuration for the first mining / construction machine.

[0037] The possibility of changing the charging configuration may mean how much of the charging power that may be changed and may be given percentage or as a ratio. For example, 100% or 75%. The response may also indicate the time period when the change of power may happen such as the next hour. An advantage with this implementation form is that the energy may be utilized according to the availability.

[0038] In an implementation form of an EMS according to the first aspect, the first sub-device is configured to transmit a request to the third sub-device, the request indicating a change in the charging configuration for the second mining / construction machine; and the first sub-device is configured to receive a response from the third sub-device, the response indicating a possibility of changing the charging configuration for the second mining / construction machine.

[0039] An advantage with this implementation form is to change the energy utilization based on present and forecasted energy availability.

[0040] According to a second aspect of the disclosure, the above mentioned and other objectives are achieved with a method for an EMS, the method comprising: receiving at least one PG I of at least one power source connected to at least one charging station and configured to provide power to the charging station; receiving at least one first charging information for at least one first mining / construction machine when being charged by the charging station in a charging state; receiving at least one second charging information for at least one second mining / construction machine when being located in a field in a non-charging state; and changing at least one of a power generation of the power source, a charging configuration for the first mining / construction machine, and a charging configuration for the second mining / construction machine based on the power generation information, the first charging information and the second charging information.

[0041] The method may be adapted in accordance with the above-mentioned embodiments of the EMS. The advantages of the method are the same as the advantages of the corresponding embodiments of the EMS.

[0042] According to further aspects of the present disclosure, the herein described methods are implemented by use of computer program products comprising instructions which, when the programs are executed by a computer, such as e.g., a control unit, cause the computer to carry out the steps of the methods according to any one of the herein described embodiments.

[0043] Further applications and advantages of embodiments of the disclosure will be apparent from the following detailed description.

[0044] Brief Description of the Drawings

[0045] The appended drawings are intended to clarify and explain different embodiments of the disclosure, in which:

[0046] Fig. 1 shows an EMS according to embodiments of the disclosure;

[0047] Fig. 2 illustrates an EMS controlling a plurality of power sources according to embodiments of the disclosure;

[0048] Fig. 3 illustrates an EMS configured to use multiple input parameters and data according to embodiments of the disclosure;

[0049] Fig. 4 shows a charging station connected to power source via a substation according to embodiments of the disclosure;

[0050] Fig. 5 shows a distributed EMS according to embodiments of the disclosure;

[0051] Fig. 6 shows signalling aspects according to embodiments of the disclosure;

[0052] Fig. 7 shows a flow chart for an EMS according to embodiments of the disclosure; and

[0053] Fig. 8 shows exemplary mining / construction machines according to embodiments of the disclosure.

[0054] Detailed Description

[0055] Fig. 1 shows an EMS 100 according to embodiments of the disclosure. The herein disclosed EMS 100 is configured to receive at least one power generation information (PGI) of at least one power source 200 connected to at one least one charging station 210 and configured to provide an input power to the charging station 210. Thus, one or more power sources 200 may be connected to the charging station 210 and configured to provide input power to the charging station 210. The power source 200 may be any suitable power source configured to supply electrical power such as for e.g., renewable, non-renewable, power grid or energy storage units e.g., batteries and power capacitors. The EMS 100 is further configured to receive information / data to be processed for energy / power management. Thus, the EMS 100 is configured to receive at least one first charging information CI1 for at least one first mining / construction machine 300 when the first mining / construction machine 300 is charged by the charging station 210 in a charging state. The EMS 100 is further configured to receive at least one second charging information CI2 for at least one second mining / construction machine 300' when the second mining / construction machine 300' is located in a field in a noncharging state. It may be understood that the first charging information CI1 can be received from a plurality of first mining / construction machines 300 and the second charging information CI2 can be received from a plurality of second mining / construction machines 300'.

[0056] At a certain first time instance T1 , the first mining / construction machine 300 is charged by the charging station 210 while the second mining / construction machine 300' is not charged by the charging station 210. Hence, the second mining / construction machine 300' is located in the field and possibly remote from the charging station 210. Thus, the EMS 100 obtains information about mining / construction machines 300, 300' being charged and not being charged at a certain time instance.

[0057] Based on the PGI, the first charging information CI1 , and the second charging information CI2, the EMS 100 changes a power generation of the power source 200 and / or a charging configuration for the first mining / construction machine 300 and / or a charging configuration for the second mining / construction machine 300'.

[0058] Fig. 1 shows how the EMS 100 receives the above-mentioned information / data and produces control signals (Ctrl) by which the EMS 100 may change the power generation of the power source 200 and / or a charging configuration for the first mining / construction machine 300 and / or a charging configuration for the second mining / construction machine 300'. The EMS 100 may e.g., process the input data in a control algorithm configured to output a change in any of the mentioned power generation and charging configurations. Generally, the EMS 100 manages energy to ensure there is available energy during the operation of the charging station with necessary reserve energy and peak energy. This has implication on the power usage as the energy system only can run stable if there is a balance of power supply and power demand. The scope of the EMS 100 not only includes balancing input energy to output energy but also to provide required energy at the charging station reliably and securely by proper selection of power / energy sources. This also has economic implications for cost-effective operation.

[0059] Therefore, in embodiments of the invention, a plurality of power sources 200 are connected to the charging station 210 as shown in Fig. 2. The plurality of power sources 200 comprises any mix of grid power, renewable power sources, diesel power generators, and battery energy storage systems (BESSs). The EMS 100 may control the plurality of power sources 200 by:

[0060] • Maximizing energy from renewable power sources, which energy however varies due to weather conditions.

[0061] • Minimize diesel generated energy and only use this energy at peak loads and when the renewable energy is low.

[0062] • Charge BESSs during low loads and discharge BESSs during peak loads.

[0063] Thus, the EMS 100 may send control signals Ctrl such as power reference commands and START / STOP commands to control units 220 of the plurality of power sources 200 for controlling them in this manner as also shown in Fig. 2. The change of the power generation of the power source 200 may therefore be understood such that the energy / power supplied by the power source 200 to the charging station 210 is started, stopped, increase or decrease to balance the energy from different power sources 200 in view of needed energy at the charging station 210.

[0064] Furthermore, the PGI in embodiments of the disclosure comprises any of: available power sources, an available power in a power grid, an available power in a BESS, and a renewable power generation.

[0065] Available power sources may mean the number and types of power sources such as a power grid, renewable power source, diesel generated power, and BESS. This information may also relate to the available energy / power at the power source 200 and hence how much electrical energy or power that may be supplied to the charging station 210, e.g., the available power at the power grid and the BESS. Further, the characteristics of the supplied energy / power may influence how to manage the energy. Examples of relevant characteristics are current, voltage, frequency etc.

[0066] Correspondingly, the first charging information CI1 in embodiments of the disclosure comprises any of: a state of charge (SoC) of a battery in the first mining / construction machine 300, a charging power and a charging pattern of the first mining / construction machine 300. The SoC of one or more batteries in the first mining / construction machine 300 gives information about how much power that is needed for charging the batteries of first mining / construction machine 300 to a certain charging level. The charging power needed by the first mining / construction machine 300 will directly impact how much input power that should be supplied to the charging station 210. The charging pattern on the other hand relates to needed power as a function of time.

[0067] Correspondingly, the second charging information CI2 in embodiments of the disclosure comprises any of: a SoC of a battery in the second mining / construction machine 300', a distance for the second mining / construction machine 300' to a charging station, and a work schedule of second mining / construction machine 300'. As previously mentioned, the SoC of the second mining / construction machine 300' will impact how much power that is needed when the second mining / construction machine 300' is charged at a later time instance after the first time instance. By knowing the distance between the second mining / construction machine 300' to the charging station it can be derived when in time the second mining / construction machine 300' needs to be charged. The work schedule of the second mining / construction machine 300' will correlate power consumption to time. Depending on the task involved in the work schedule it may be derived how much power that will be needed at a certain time period.

[0068] The power demand of the charging station 201 is related to the charging configuration for the first 300 and second mining / construction machines 300'. Thus, the input power and the output power at the charging station 210 can be balanced and matched if the charging configuration for the first 300 and / or second mining / construction machines 300' is changed. It is noted that the charging configuration for the first 300 and second 300' mining / construction machines may in embodiments of the disclosure differ from each other.

[0069] Thus, the charging configuration for the first mining / construction machine 300 may comprise at least one of: a charging power, and / or a charging pattern, and / or a charging duration. The charging power is the amount of power needed by the first mining / construction machine 300 when being charged. The charging pattern relates to the needed power during different time periods for the first mining / construction machine 300. The charging duration is the time period during which the first mining / construction machine 300 is charged. Any of these charging parameters for the first mining / construction machine 300 may be changed.

[0070] The charging configuration for the second mining / construction machine 300' may on the other hand comprise at least one of: a charging schedule, and / or a location of a charging station 210. The charging schedule relates to the schedule when second mining / construction machine 300' is planned to be charged. The location of the charging station 210 will give information about the distance between the charging station 210 and the second mining / construction machine 300' in the field. Thus, how much power is left in the second mining / construction machine 300' and the power requirement of the second mining / construction machine 300' before being charged will be considered. Any of these charging parameters for the second mining / construction machine 300' may be changed.

[0071] Fig. 3 illustrates an EMS 100 configured to use multiple further input param eters / data for managing power at the charging station 210 according to embodiments of the disclosure.

[0072] Thus, in a first example, the EMS 100 uses a first load profile of the first mining / construction machine 300 and a second load profile of the second mining / construction machine 300' for changing at least one of the power generation of the power source 200, the charging configuration for the first mining / construction machine 300, and the charging configuration for the second mining / construction machine 300'. The load profile for the first mining / construction machine 300 is a charging profile while load profile for the second mining / construction machine 300' is power consumption / demand profile based on a work cycle of the second mining / construction machine 300'.

[0073] In a second example, the EMS 100 receives at least one electrical measurement information (EMI) of the power source 200, and uses the EMI for changing at least one of the power generation of the power source 200, the charging configuration for the first mining / construction machine 300, and the charging configuration for the second mining / construction machine 300'. The EMI of the power source 200 gives useful information about the condition of the power source 200 and thus directly information about the input power supplied by the power source 200 to the charging station 210.

[0074] The EMI may comprise any of: a voltage measurement, a current measurement, a power measurement, and a reactive power measurement. These are relevant measurements from which the condition of the power source 200 can derived.

[0075] In a third example, the EMS 100 receives at least one forecast of produced power (FPP) of the power source 200, and uses the FPP for changing at least one of the power generation of the power source 200, the charging configuration for the first mining / construction machine 300, and the charging configuration for the second mining / construction machine 300' further based on the FPP. The FPPs of the power source gives information about the future power that will be produced by the power source 200 and thus directly information about the input power that will be delivered to the charging station 210 in future charging scenarios.

[0076] Fig. 4 shows a charging station 210 connected to a power source 200 via a substation 220 according to embodiments of the disclosure. The input power to the charging station 210 is therefore supplied by the substation 220. Commonly, the main power grid is connected to one or more primary substations. Onsite power generation, renewable power generation and BESS are often located at the primary substation. Usually, there are outgoing feeders / electrical lines inside mines and construction sites forming the electrical network from the primary substation, and charging stations are likely connected at different location in the network through a secondary substation which may comprise transformers, breakers, electrical protection, etc.

[0077] Fig. 5 shows a distributed EMS 100 according to embodiments of the disclosure. That the EMS 100 is distributed may be understood such that the EMS 100 comprises of multiple separate devices or sub-devices which are located at different spatial locations. The multiple separate devices may be interconnected with communication interfaces so that the different devices of the EMS can communicate with each other. The communication interfaces may comprise wired and / or wireless communication means and may conform to communication standards and protocol known in the art.

[0078] Hence, the EMS 100 in embodiments of the disclosure comprises: a first sub-device 110 arranged in a substation 220, a second sub-device 120 arranged in the charging station 210, and third sub-devices 130 arranged in the first mining / construction machine 300 and the second mining / construction machine 300', respectively. Each sub-device may comprise a sub-controller configured to control its sub-area of functions and tasks.

[0079] Fig. 6 shows signalling aspects of a distributed EMS 100 according to embodiments of the disclosure. As aforementioned, the EMS 100 may in examples be distributed and thus located in multiple separate devices / arrangements / machines. Hence, control signalling between the different sub-devices of the EMS 100 may be necessary and advantages for coordinating the different sub-devices of the EMS 100 for efficient energy management.

[0080] The sub-devices may also be configured to obtain measurements, information and data to be processed by the EMS 100 for controlling the power generation of the power source 200 and / or a charging configuration for the first mining / construction machine 300 and / or a charging configuration for the second mining / construction machine 300'. The obtained measurements, information and data may relate to the ones previously mentioned and described such as PGIs, charging information, load profiles, electrical measurements and FPPs. In a first embodiment of such control signalling, the first sub-device 110 in the substation 220 transmits a request 510 to the second sub-device 120 in the charging station 120. The transmitted request 510 indicates a change in the charging configuration for the first mining / construction machine 300. The first sub-device 110 thereafter receives a response 520 from the second sub-device 120. The received response 520 indicates a possibility of changing the charging configuration for the first mining / construction machine 300. The possibility of changing the charging configuration for the first mining / construction machine 300 may mean how much of the charging power that may be changed for the first mining / construction machine 300 and may be given percentage or as a ratio. The possibility of change may also imply an allowed power range or power limit, e.g., 100% or 75%. The response 520 may also indicate the time period when the change of power may happen such as the next hour or day etc. Thus, the first sub-device 110 changes the charging configuration for the first mining / construction machine 300 based on the response 520. That is, the change is within the possible or allowed change indicated in the response 520.

[0081] In a second embodiment of such signalling, the first sub-device 110 in the substation 220 transmits a request 530 to the third sub-device 130 in the second mining / construction machine 300'. The transmitted request 530 indicates a change in the charging configuration for the second mining / construction machine 300'. The first sub-device 110 thereafter receives a response 540 from the third sub-device 130. The response 540 indicates a possibility of changing the charging configuration for the second mining / construction machine 300'. The possibility of changing the charging configuration for the second mining / construction machine 300' has the corresponding meaning as for the first mining / construction machine 300. The response 540 may also indicate the time period when the change of power may happen such as the next hour or day etc. Thus, the first sub-device 110 changes the charging configuration for the second mining / construction machine 300' based on the response 540. That is, the change is within the possible or allowed change indicated in the response 540.

[0082] The architecture or topology of the EMS 100 may also involve a hierarchical structure with a master device and a plurality of slave devices which are controlled by the master device. Thus, in embodiments of the disclosure, the first sub-device 110 in the substation 220 is configured as the master while the the second sub-device 120 and the third sub-device 130 are configured as slaves and controlled by the first sub-device 110. However, the location of the master and slaves may vary depending on the application.

[0083] Fig. 7 shows a flow chart of a method 400 according to embodiment of the disclosure. The method 400 may be implemented and executed in a EMS 100 and comprises the steps of: receiving 402 at least one PG I of at least one power source 200 connected to at least one charging station 210 and configured to provide power to the charging station 210; receiving 404 at least one first charging information CI1 for at least one first mining / construction machine 300 when being charged by the charging station 210 in a charging state; receiving 406 at least one second charging information CI2 for at least one second mining / construction machine 300' when being located in a field in a non-charging state; and changing 408 at least one of a power generation of the power source 200, a charging configuration for the first mining / construction machine 300, and a charging configuration for the second mining / construction machine 300' based on the PGI, the first charging information CI1 and the second charging information CI2.

[0084] Embodiments of the method 400 may fully correspond to all embodiments of the EMS 100 herein disclosed. The EMS 100 comprises one or more control devices / units arranged / configured / programmed with instruction to carry out the method 400.

[0085] Fig. 8 illustrates examples of a mining / construction machine that may be used with the present EMS 100. The mining / construction machine 300 may be any type of electrified machine or vehicle used in a mining and / or construction environment / site such as e.g., a drill rig, a truck, a loader, a digging machine, etc. With reference to Fig. 8, the mining / construction machine 300 may e.g., be a drill rig, a loading, hauling and dumping (LHD) machine or a mine truck but is not limited thereto.

[0086] When the EMS 100 is distributed over multiple sub-devices, one of these sub-devices is arranged in a mining / construction machine being a first mining / construction machine 300 or a second mining / construction machine 300'. Finally, it should be understood that the invention is not limited to the embodiments described above, but also relates to and incorporates all embodiments within the scope of the appended independent claims.

Claims

CLAIMS1. An energy management system, EMS, (100) configured to: receive at least power generation information, PGI, of at least one power source (200) connected to at one least one charging station (210) and configured to provide power to the charging station (210); receive at least one first charging information (CI1 ) for at least one first mining / construction machine (300) when being charged by the charging station (210) in a charging state; receive at least one second charging information (CI2) for at least one second mining / construction machine (300') when being located in a field in a non-charging state; and change at least one of a power generation of the power source (200), a charging configuration for the first mining / construction machine (300), and a charging configuration for the second mining / construction machine (300') based on the PGI, the first charging information (CI1 ) and the second charging information (CI2).

2. The EMS (100) according to claim 1 , wherein the PGI comprises: available power sources, an available power in a power grid, an available power in a battery energy storage system, BESS, and a renewable power generation.

3. The EMS (100) according to claim 1 or 2, wherein the first charging information (CI1 ) comprises: a state of charge, SoC, of a battery in the first mining / construction machine (300), a charging power and a charging pattern associated with the first mining / construction machine.

4. The EMS (100) according to any one of the preceding claims, wherein the second charging information (CI2) comprises: a SoC of a battery in the second mining / construction machine (300'), a distance for the second mining / construction machine to a charging station, and a work schedule of the second mining / construction machine.

5. The EMS (100) according to any one of the preceding claims, wherein the charging configuration for the first mining / construction machine (300) comprises at least one of: a charging power, a charging pattern, and a charging duration.

6. The EMS (100) according to any one of the preceding claims, wherein the charging configuration for the second mining / construction machine (300') comprises at least one of: a charging schedule, and a location of a charging station (210).

7. The EMS (100) according to any one of the preceding claims, configured to: change at least one of the power generation of the power source (200), the charging configuration for the first mining / construction machine (300), and the charging configuration for the second mining / construction machine (300') further based on a first load profile of the first mining / construction machine (300) and a second load profile of the second mining / construction machine (300').

8. The EMS (100) according to any one of the preceding claims, configured to: receive at least one electrical measurement information, EMI, of the power source (200); and change at least one of the power generation of the power source (200), the charging configuration for the first mining / construction machine (300), and the charging configuration for the second mining / construction machine (300') further based on the EMI.

9. The EMS (100) according to claim 8, wherein the EMI comprises any of: a voltage measurement, a current measurement, a power measurement, and a reactive power measurement.

10. The EMS (100) according to any one of the preceding claims, configured to: receive at least one forecast of produced power, FPP, of the power source (200); and change at least one of the power generation of the power source (200), the charging configuration for the first mining / construction machine (300), and the charging configuration for the second mining / construction machine (300') further based on the FPP.11 . The EMS (100) according to any one of the preceding claims, wherein the power source (200) is connected to the charging station (210) via a substation (220).

12. The EMS (100) according to any one of the preceding claims, wherein the EMS (100) comprises: a first sub-device (110) arranged in a substation (220), a second sub-device (120) arranged in the charging station (210), and third sub-devices (130) arranged in the first mining / construction machine (300) and the second mining / construction machine (300'), respectively.

13. The EMS (100) according to claim 12, wherein the first sub-device (110) is configured to transmit a request (510) to the second sub-device (120), the request (510) indicating a change in the charging configuration for the first mining / construction machine (300); and the first sub-device (110) is configured to receive a response (520) from the second sub-device (120), the response (520) indicating a possibility of changing the charging configuration for the first mining / construction machine (300).

14. The EMS (100) according to claim 12 or 13, wherein the first sub-device (110) is configured to transmit a request (530) to the third subdevice (130), the request (530) indicating a change in the charging configuration for the second mining / construction machine (300'); and the first sub-device (110) is configured to receive a response (540) from the third sub-device (130), the response (540) indicating a possibility of changing the charging configuration for the second mining / construction machine (300').

15. A method (400) for an EMS (100), the method (400) comprising: receiving (402) at least one PG I of at least one power source (200) connected to at least one charging station (210) and configured to provide power to the charging station (210); receiving (404) at least one first charging information (CI1 ) for at least one first mining / construction machine (300) when being charged by the charging station (210) in a charging state;receiving (406) at least one second charging information (CI2) for at least one second mining / construction machine (300') when being located in a field in a noncharging state; and changing (408) at least one of a power generation of the power source (200), a charging configuration for the first mining / construction machine (300), and a charging configuration for the second mining / construction machine (300') based on the power generation information (PGI), the first charging information (CI1 ) and the second charging information (CI2).

Images