CN117907853A - State identification method, device, equipment and medium for substation storage battery pack - Google Patents
State identification method, device, equipment and medium for substation storage battery pack Download PDFInfo
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Abstract
The invention discloses a state identification method of a substation storage battery pack, which comprises the following steps: and periodically acquiring a storage battery end voltage value, a direct current bus current value and a storage battery current value of the transformer substation, if the first storage battery current value, the second storage battery current value and the third storage battery current value do not meet preset conditions, determining a first comparison result according to the first storage battery current value, the second storage battery current value and the third storage battery current value, determining a second comparison result according to the first storage battery end voltage value, the second storage battery end voltage value and the third storage battery end voltage value, determining a third comparison result according to the first direct current bus current value, the first storage battery current value, the second direct current bus current value and the second storage battery current value, determining a fourth comparison result according to the first storage battery current value, the second storage battery current value, the third storage battery current value and the fourth comparison result, and determining state information of the storage battery according to the first comparison result, the second comparison result and the fourth storage battery. According to the technical scheme, the state information of the storage battery pack of the transformer substation can be accurately determined.
Description
Technical Field
The invention relates to the technical field of storage batteries, in particular to a state identification method of a substation storage battery pack.
Background
The secondary equipment of the transformer substation is powered by a station direct current power supply system under the normal operation condition, at the moment, the station direct current power supply system converts station alternating current input power supply into direct current to supply direct current to the whole station direct current load, and floating charging is carried out on a storage battery, when the station direct current power supply system loses the alternating current input power supply or the direct current power supply system fails, the storage battery is powered by the storage battery to bear the direct current load of the whole station, at the moment, the storage battery is in a discharging state and is used as the only residual direct current power supply of the whole station, when the discharging time of the storage battery is too long, all electric energy is consumed, the whole station is subjected to direct current voltage loss, the whole transformer substation is in a paralysis state, if the system fails at the moment, relay protection is not operated due to the lack of the direct current power supply, the fault is cut off, and the accident range is enlarged, so that a large-area power failure accident is caused can be caused, and whether the storage battery is in the discharging state is critical can be found timely, operation maintenance personnel can be reminded of the arrival of the station treatment, and the accident is prevented.
The current station direct current power supply system does not have a storage battery discharge alarm signal, the bus voltage at the initial stage of storage battery discharge is still higher, no obvious other abnormal signals exist at the initial stage of discharge, and the charging and discharging states of the storage battery of the current transformer station cannot be accurately identified.
Disclosure of Invention
The invention provides a state identification method, device, equipment and medium of a substation storage battery pack, which are used for solving the technical problem that the state of the current substation storage battery pack cannot be accurately identified in the prior art.
According to an aspect of the present invention, there is provided a state recognition method of a substation storage battery pack, including:
Periodically collecting a first storage battery pack end voltage value, a first direct current bus current value, a first storage battery pack current value, a second storage battery pack end voltage value, a second direct current bus current value, a second storage battery pack current value, a third storage battery pack end voltage value, a third direct current bus current value and a third storage battery pack current value of a transformer substation;
If the first storage battery current value, the second storage battery current value and the third storage battery current value do not meet preset conditions, determining a first comparison result according to the first storage battery current value, the second storage battery current value and the third storage battery current value, determining a second comparison result according to the first storage battery terminal voltage value, the second storage battery terminal voltage value and the third storage battery terminal voltage value, determining a third comparison result according to the first direct current bus voltage value, the second direct current bus voltage value and the third direct current bus voltage value, and determining a fourth comparison result according to the first direct current bus current value, the first storage battery current value, the second direct current bus current value and the second storage battery current value;
And determining the state information of the substation storage battery pack according to the first comparison result, the second comparison result, the third comparison result and the fourth comparison result.
According to another aspect of the present invention, there is provided a state recognition device of a substation storage battery pack, including:
The transformer substation information acquisition module is used for periodically acquiring a first storage battery pack end voltage value, a first direct current bus current value, a first storage battery pack current value, a second storage battery pack end voltage value, a second direct current bus current value, a second storage battery pack current value, a third storage battery pack end voltage value, a third direct current bus current value and a third storage battery pack current value of a transformer substation;
The comparison result determining module is configured to determine a first comparison result according to the first battery pack current value, the second battery pack current value and the third battery pack current value, determine a second comparison result according to the first battery pack terminal voltage value, the second battery pack terminal voltage value and the third battery pack terminal voltage value, determine a third comparison result according to the first direct current bus voltage value, the second direct current bus voltage value and the third direct current bus voltage value, and determine a fourth comparison result according to the first direct current bus current value, the first battery pack current value, the second direct current bus current value and the second battery pack current value if the first battery pack current value, the second battery pack current value and the third battery pack current value do not meet a preset condition;
And the substation storage battery pack state determining module is used for determining state information of the substation storage battery pack according to the first comparison result, the second comparison result, the third comparison result and the fourth comparison result.
According to another aspect of the present invention, there is provided an electronic apparatus including:
At least one processor; and
A memory communicatively coupled to the at least one processor; wherein,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method for identifying the state of the substation storage battery according to any of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the method for identifying the state of a substation storage battery according to any of the embodiments of the present invention when executed.
According to the technical scheme, the end voltage value, the direct current bus current value and the storage battery current value of the transformer substation are periodically acquired, state information of the transformer substation can be timely acquired, under the condition that the first storage battery current value, the second storage battery current value and the third storage battery current value do not meet preset conditions, a first comparison result is determined according to the first storage battery current value, the second storage battery current value and the third storage battery current value, a second comparison result is determined according to the first storage battery end voltage value, the second storage battery end voltage value and the third storage battery end voltage value, a third comparison result is determined according to the first direct current bus current value, the first storage battery current value, the second direct current bus current value and the second storage battery current value, a fourth comparison result is determined according to the first storage battery current value, the second storage battery current value and the fourth comparison result, the current state of the transformer substation storage battery can be accurately determined according to the current state information of the transformer substation, and monitoring of a manager is facilitated.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for identifying a state of a substation storage battery according to a first embodiment of the present invention;
fig. 2 is a flowchart of another method for identifying the state of a substation storage battery according to the second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a state recognition device of a substation storage battery pack according to a third embodiment of the present invention;
Fig. 4 is a schematic structural diagram of an electronic device implementing a method for identifying a state of a substation storage battery according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only 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 present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a method for identifying a state of a substation storage battery according to an embodiment of the present invention, where the method may be performed by a state identifying device of the substation storage battery, the state identifying device of the substation storage battery may be implemented in a hardware and/or software manner, and the state identifying device of the substation storage battery may be configured in an electronic device. As shown in fig. 1, the method includes:
s110, periodically collecting a first storage battery pack end voltage value, a first direct current bus current value, a first storage battery pack current value, a second storage battery pack end voltage value, a second direct current bus current value, a second storage battery pack current value, a third storage battery pack end voltage value, a third direct current bus current value and a third storage battery pack current value of the transformer substation.
The first storage battery voltage value, the second storage battery voltage value and the third storage battery voltage value can be storage battery voltage values of the same transformer substation, which are acquired at different moments; the first dc bus voltage value, the second dc bus voltage value, and the third dc bus voltage value may be dc bus voltage values of the same substation acquired at different times; the first battery pack current value, the second battery pack current value, and the third battery pack current value may be battery pack current values of the same substation acquired at different times; the first dc bus current value, the second dc bus current value, and the third dc bus current value may be dc bus current values of the same substation acquired at different times.
The first storage battery pack terminal voltage value, the first direct current bus current value and the first storage battery pack current value can be state information of the same transformer substation, which is acquired in a first transformer substation state information acquisition period; the second storage battery pack terminal voltage value, the second direct current bus current value and the second storage battery pack current value can be state information of the same transformer substation acquired in a second transformer substation state information acquisition period; the third battery pack terminal voltage value, the third direct current bus current value and the third battery pack current value can be state information of the same transformer substation acquired in a third transformer substation state information acquisition period; the fourth battery pack terminal voltage value, the fourth direct current bus current value, and the fourth battery pack current value may be state information of the same substation acquired in a fourth substation state information acquisition period.
The first substation state information acquisition period, the second substation state information acquisition period and the third substation state information acquisition period can be different acquisition periods for acquiring substation state information, preset interval time among the first substation state information acquisition period, the second substation state information acquisition period and the third substation state information acquisition period is the same, the preset interval time can be 5 minutes or 10 minutes, the specific preset interval time is not particularly limited, and a person skilled in the art can set the preset interval time among different acquisition periods according to requirements. For example, under the condition that the preset interval time between different acquisition periods is 5 minutes, the preset interval time between the first substation state information acquisition period and the second substation state information acquisition period and the preset interval time between the second substation state information acquisition period and the third substation state information acquisition period are both 5 minutes.
Specifically, the voltage value of the end of the storage battery, the voltage value of the direct current bus, the current value of the direct current bus and the current value of the storage battery of the transformer substation are periodically collected, and the voltage value of the end of the storage battery, the voltage value of the direct current bus, the current value of the direct current bus and the current value of the storage battery of the transformer substation can be collected by taking preset time as a period. For example, in the case that the preset interval time is 5 minutes, the battery pack end voltage value, the direct current bus current value and the battery pack current value of the transformer substation may be acquired once every 5 minutes with the 5 minutes as an acquisition period, for example, the first battery pack end voltage value, the first direct current bus current value and the first battery pack current value of the transformer substation are acquired at 15:00, the second battery pack end voltage value, the second direct current bus current value and the second battery pack current value of the transformer substation are acquired at 15:05, and the third battery pack end voltage value, the third direct current bus current value and the third battery pack current value of the transformer substation are acquired at 15:10. After the end voltage value, the direct current bus current value and the storage battery current value of the storage battery of the transformer substation are acquired in three acquisition periods, the state of the storage battery of the transformer substation can be identified according to the acquisition results of the three acquisition periods.
S120, if the first storage battery current value, the second storage battery current value and the third storage battery current value do not meet preset conditions, determining a first comparison result according to the first storage battery current value, the second storage battery current value and the third storage battery current value, determining a second comparison result according to the first storage battery terminal voltage value, the second storage battery terminal voltage value and the third storage battery terminal voltage value, determining a third comparison result according to the first direct current bus voltage value, the second direct current bus voltage value and the third direct current bus voltage value, and determining a fourth comparison result according to the first direct current bus current value, the first storage battery current value, the second direct current bus current value and the second storage battery current value.
The absolute value of the first battery current value may be a current value obtained after the absolute value of the first battery current value is obtained, the absolute value of the second battery current value may be a current value obtained after the absolute value of the second battery current value is obtained, and the absolute value of the third battery current value may be a current value obtained after the absolute value of the third battery current value is obtained, for example, when the battery current value is-100A (unit ampere of a battery current value), the absolute value of the battery current value is 100A. The preset value may be 0.003C10 (C10 is the rated capacity of the battery pack, and the rated capacity of the battery pack may be determined according to parameters such as type, size, weight, voltage, current, etc. of the battery pack, and the specific value of the rated capacity of the battery pack and the method for determining the rated capacity of the battery pack are not particularly limited in the present invention.
Specifically, if any one of the first battery current value, the second battery current value, and the third battery current value is a positive value, it is determined that the first battery current value, the second battery current value, and the third battery current value do not satisfy the preset condition.
Specifically, the first comparison result is determined according to the first battery current value, the second battery current value and the third battery current value, that is, after the absolute values of the first battery current value, the second battery current value and the third battery current value are taken, the absolute values of the first battery current value, the second battery current value and the third battery current value are respectively compared with the value 0.003C10 to obtain comparison results of the absolute values of the first battery current value, the second battery current value and the third battery current value with the value 0.003C10, and the obtained comparison results are used as the first comparison result.
After the first comparison result is obtained, whether the first comparison result meets the set condition or not can be judged according to the first comparison result, specifically, if the absolute values of the first storage battery current value, the second storage battery current value and the third storage battery current value are all larger than 0.003C10, the first comparison result is indicated to meet the set condition; if the absolute values of the first battery pack current value, the second battery pack current value and the third battery pack current value are not satisfied with the condition that the absolute values of the first battery pack current value, the second battery pack current value and the third battery pack current value are all larger than 0.003C10, the first comparison result is not satisfied with the set condition.
Specifically, the second comparison result is determined according to the first battery pack terminal voltage value, the second battery pack terminal voltage value and the third battery pack terminal voltage value, and the values of the first battery pack terminal voltage value, the second battery pack terminal voltage value and the third battery pack terminal voltage value may be respectively compared to obtain comparison results of the values of the first battery pack terminal voltage value, the second battery pack terminal voltage value and the third battery pack terminal voltage value, and the obtained comparison results are used as the second comparison result.
After the second comparison result is obtained, whether the second comparison result meets the set condition or not can be judged according to the second comparison result, specifically, if the first storage battery pack terminal voltage value is larger than the second storage battery pack terminal voltage value and the second storage battery pack terminal voltage value is larger than the third storage battery pack terminal voltage value, the second comparison result is indicated to meet the set condition; and if the second comparison result does not meet the condition that the first storage battery pack terminal voltage value is larger than the second storage battery pack terminal voltage value and the second storage battery pack terminal voltage value is larger than the third storage battery pack terminal voltage value, the second comparison result does not meet the set condition.
Specifically, the third comparison result is determined according to the first dc bus voltage value, the second dc bus voltage value and the third dc bus voltage value, that is, the values of the first dc bus voltage value, the second dc bus voltage value and the third dc bus voltage value are respectively compared to obtain the comparison result of the values of the first dc bus voltage value, the second dc bus voltage value and the third dc bus voltage value, and then the obtained comparison result is used as the third comparison result.
After the third comparison result is obtained, whether the third comparison result meets the set condition or not can be judged according to the third comparison result, specifically, if the first direct current bus voltage value is larger than the second direct current bus voltage value and the second direct current bus voltage value is larger than the third direct current bus voltage value, the third comparison result is indicated to meet the set condition; and if the third comparison result does not meet the condition that the first direct current bus voltage value is larger than the second direct current bus voltage value and the second direct current bus voltage value is larger than the third direct current bus voltage value, the third comparison result does not meet the set condition.
The fourth comparison result is determined according to the first direct current bus current value, the first storage battery current value, the second direct current bus current value and the second storage battery current value, the first direct current bus current value and the first storage battery current value are compared in magnitude, the comparison result of the first direct current bus current value and the first storage battery current value is obtained, the second direct current bus current value and the second storage battery current value are compared, the comparison result of the second direct current bus current value and the second storage battery current value is obtained, and finally the comparison result of the first direct current bus current value and the first storage battery current value and the comparison result of the second direct current bus current value and the second storage battery current value are used as the fourth comparison result.
After the fourth comparison result is obtained, whether the fourth comparison result meets the set condition or not can be judged according to the fourth comparison result, specifically, if the first direct current bus current value is equal to the value of the absolute value of the first storage battery current value and the second direct current bus current value is equal to the value of the absolute value of the second storage battery current value, the fourth comparison result meets the set condition; if the fourth comparison result does not satisfy the condition that the first direct current bus current value is equal to the value of the first storage battery current value absolute value and the second direct current bus current value is equal to the value of the second storage battery current value absolute value, the fourth comparison result does not satisfy the set condition.
S130, determining state information of the substation storage battery pack according to the first comparison result, the second comparison result, the third comparison result and the fourth comparison result.
The state information of the substation storage battery pack may include: a charged state and a discharged state.
Specifically, determining the state information of the substation storage battery pack according to the first comparison result, the second comparison result, the third comparison result and the fourth comparison result includes:
If the first comparison result, the second comparison result, the third comparison result and the fourth comparison result all meet the preset conditions, determining that the substation storage battery pack is in a discharging state;
And if at least one of the first comparison result, the second comparison result, the third comparison result and the fourth comparison result does not meet the preset condition, determining that the substation storage battery pack is in a charging state.
Specifically, if the conditions that the first battery current value, the second battery current value and the third battery current value are all greater than 0.003C10, the first battery terminal voltage value is greater than the second battery terminal voltage value and the second battery terminal voltage value is greater than the third battery terminal voltage value, the first direct current bus voltage value is greater than the second direct current bus voltage value and the second direct current bus voltage value is greater than the third direct current bus voltage value and the first direct current bus current value is equal to the value of the first battery current value and the second direct current bus current value is equal to the value of the second battery current value are met at the same time, the conditions that the first comparison result, the second comparison result, the third comparison result and the fourth comparison result are all met are indicated, and if the first comparison result, the second comparison result, the third comparison result and the fourth comparison result all meet the preset conditions, the substation battery can be determined to be in a discharging state.
Specifically, if the conditions that the first battery pack current value, the second battery pack current value and the third battery pack current value are all greater than 0.003C10, the first battery pack terminal voltage value is greater than the second battery pack terminal voltage value and the second battery pack terminal voltage value is greater than the third battery pack terminal voltage value, the first direct current bus voltage value is greater than the second direct current bus voltage value and the second direct current bus voltage value is greater than the third direct current bus voltage value, and the first direct current bus current value is equal to the value of the absolute value of the first battery pack current value and the second direct current bus current value is equal to the value of the absolute value of the second battery pack current value cannot be satisfied at the same time, the state of the current transformer substation battery pack is the charging state.
Optionally, after determining the state of the substation storage battery, the storage battery terminal voltage value, the direct current bus current value and the storage battery current value of the substation can be acquired again at the moment of the preset interval time. For example, under the condition that the preset interval time is 5 minutes, a first battery pack end voltage value, a first direct current bus current value and a first battery pack current value of the transformer substation can be acquired at 15:00, a second battery pack end voltage value, a second direct current bus current value and a second battery pack current value of the transformer substation are acquired at 15:05, and a third battery pack end voltage value, a third direct current bus current value and a third battery pack current value of the transformer substation are acquired at 15:10. And after the state of the substation storage battery is identified according to the acquisition results of the three acquisition periods, acquiring a fourth storage battery terminal voltage value, a fourth direct current bus current value and a fourth storage battery current value of the substation at 15:15.
Optionally, after the collection of the fourth battery pack end voltage value, the fourth direct current bus current value, and the fourth battery pack current value of the transformer substation is completed, the state of the transformer substation battery pack may be identified according to the second battery pack current value, the third battery pack current value, and the fourth battery pack current value, the second battery pack end voltage value, the third battery pack end voltage value, and the fourth battery pack end voltage value, the second direct current bus voltage value, the third direct current bus voltage value, and the fourth direct current bus voltage value, the second direct current bus current value, the second battery pack current value, the third direct current bus current value, and the third battery pack current value.
The invention can collect the end voltage value, the direct current bus current value and the storage battery current value of the transformer substation at the moment when each interval time reaches the preset interval time, and can identify the state of the storage battery of the transformer substation according to the collected end voltage value, the collected direct current bus current value and the collected storage battery current value and the storage battery end voltage value, the collected direct current bus current value and the collected storage battery current value acquired in the first two collection periods, so as to avoid direct current bus voltage loss or permanent damage to the storage battery caused by deep discharge of the storage battery.
Optionally, if the state of the substation storage battery pack is determined to be a discharging state, discharging alarm information is generated, and the discharging alarm information is sent to an alarm center.
Specifically, if the state of the substation storage battery is determined to be a discharging state, discharging alarm information is generated and sent to an alarm center, after the state of the substation storage battery is detected to be the discharging state, the discharging time, the discharging position and other information of the substation storage battery are recorded, corresponding alarm information is generated according to the information, then the alarm information is sent to the alarm center by utilizing a wired network or a wireless network, after the alarm center receives the alarm information, an operation and maintenance person can be notified to go to the site for checking and processing according to the alarm information.
According to the embodiment of the invention, the state information of the transformer substation can be timely obtained by periodically collecting the end voltage value, the direct current bus current value and the storage battery current value of the transformer substation, and the state of the storage battery of the current transformer substation can be determined to be the charging state under the condition that the first comparison result, the second comparison result, the third comparison result and the fourth comparison result all meet the preset conditions. According to the technical scheme provided by the embodiment of the invention, the charging and discharging state of the current storage battery pack can be remotely judged, when the charging and discharging state is judged, an alarm is immediately sent to inform operation and maintenance personnel to go to the site for checking and processing, so that the accident response time is greatly shortened, and the direct current bus voltage loss or permanent damage to the storage battery caused by deep discharging of the storage battery can be effectively avoided.
Example two
Fig. 2 is a flowchart of a method for identifying a state of a substation storage battery according to a second embodiment of the present invention, where the present embodiment is based on the foregoing embodiment, and further includes: if the first storage battery current value, the second storage battery current value and the third storage battery current are all negative values, determining that the first storage battery current value, the second storage battery current value and the third storage battery current value meet preset conditions, and determining that the substation storage battery is in a charging state. The same terms as those of the above embodiments are not repeated herein. As shown in fig. 2, the method includes:
S210, periodically collecting a first storage battery pack end voltage value, a first direct current bus current value, a first storage battery pack current value, a second storage battery pack end voltage value, a second direct current bus current value, a second storage battery pack current value, a third storage battery pack end voltage value, a third direct current bus current value and a third storage battery pack current value of the transformer substation.
S220, if the first storage battery current value, the second storage battery current value and the third storage battery current value are all negative values, determining that the first storage battery current value, the second storage battery current value and the third storage battery current value meet preset conditions, and determining that the substation storage battery is in a charging state.
Specifically, after the values of the first battery current value, the second battery current value, and the third battery current value are obtained, whether the first battery current value, the second battery current value, and the third battery current value satisfy the set conditions may be determined according to the positive or negative of the first battery current value, the second battery current value, and the third battery current value. Specifically, it may be determined whether the value of the first battery pack current value is negative, whether the value of the second battery pack current value is negative, and whether the value of the third battery pack current value is negative, and if it is possible to satisfy that the value of the first battery pack current value is negative, the value of the second battery pack current value is negative, and the value of the third battery pack current value is negative at the same time, it may be determined that the substation battery pack is in a charged state.
According to the embodiment of the invention, whether the first storage battery current value, the second storage battery current value and the third storage battery current value meet the set conditions is judged directly according to the positive and negative values of the first storage battery current value, the second storage battery current value and the third storage battery current value, and when the values of the first storage battery current value, the second storage battery current value and the third storage battery current value can be simultaneously met, the state of the substation storage battery can be directly determined to be in a charging state, the state identification efficiency of the substation storage battery can be improved, and the state identification time of the substation storage battery can be further saved.
Example III
Fig. 3 is a schematic structural diagram of a state recognition device for a substation storage battery pack according to a third embodiment of the present invention. As shown in fig. 3, the apparatus includes: the system comprises a substation information acquisition module 31, a comparison result determination module 32 and a substation storage battery pack state determination module 33.
The substation information collection module 31 is configured to periodically collect a first battery pack terminal voltage value, a first dc bus current value, a first battery pack current value, a second battery pack terminal voltage value, a second dc bus current value, a second battery pack current value, a third battery pack terminal voltage value, a third dc bus current value, and a third battery pack current value of a substation.
The comparison result determining module 32 is configured to determine a first comparison result according to the first battery current value, the second battery current value, and the third battery current value, determine a second comparison result according to the first battery terminal voltage value, the second battery terminal voltage value, and the third battery terminal voltage value, determine a third comparison result according to the first dc bus voltage value, the second dc bus voltage value, and the third dc bus voltage value, and determine a fourth comparison result according to the first dc bus current value, the first battery current value, the second dc bus current value, and the second battery current value if the first battery current value, the second battery current value, and the third battery current value do not satisfy the preset condition.
The substation storage battery state determining module 33 is configured to determine state information of the substation storage battery according to the first comparison result, the second comparison result, the third comparison result, and the fourth comparison result.
The first storage battery voltage value, the second storage battery voltage value and the third storage battery voltage value are storage battery voltage values of the same transformer substation, which are acquired at different moments; the first direct current bus voltage value, the second direct current bus voltage value and the third direct current bus voltage value are the direct current bus voltage values of the same transformer substation acquired at different moments; the first storage battery current value, the second storage battery current value and the third storage battery current value are storage battery current values of the same transformer substation, which are acquired at different moments; the first direct current bus current value, the second direct current bus current value and the third direct current bus current value are the direct current bus current values of the same transformer substation acquired at different moments.
Further, the comparison result determining module 32 is specifically configured to:
determining a first comparison result according to the comparison results of the first storage battery current value, the second storage battery current value and the third storage battery current value with a preset value;
Determining a second comparison result according to the comparison result of the first storage battery pack terminal voltage value, the second storage battery pack terminal voltage value and the third storage battery pack terminal voltage value;
determining a third comparison result according to the comparison results of the first direct current bus voltage value, the second direct current bus voltage value and the third direct current bus voltage value;
And determining a fourth comparison result according to the comparison result of the first direct current bus current value and the absolute value of the first storage battery current value and the comparison result of the second direct current bus current value and the absolute value of the second storage battery current value.
Further, the substation storage battery state determining module 33 is specifically configured to:
And if the first comparison result, the second comparison result, the third comparison result and the fourth comparison result all meet the preset conditions, determining that the substation storage battery pack is in a discharging state.
Further, the state recognition device of the substation storage battery pack further comprises: the substation storage battery pack charging state determining module:
the substation storage battery pack charging state determining module is used for determining that the substation storage battery pack is in a charging state if the first storage battery pack current value, the second storage battery pack current value and the third storage battery pack current are all negative values and determining that the first storage battery pack current value, the second storage battery pack current value and the third storage battery pack current value meet preset conditions.
Further, the state recognition device of the substation storage battery pack further comprises: and a discharge alarm module:
and the discharging alarm module is used for generating discharging alarm information and sending the discharging alarm information to an alarm center if the state of the storage battery pack of the transformer substation is determined to be the discharging state.
The state recognition device of the substation storage battery pack provided by the embodiment of the invention can execute the state recognition method of the substation storage battery pack provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 4 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as the method of state identification of the substation storage battery.
In some embodiments, the method of status identification of a substation storage battery may be implemented as a computer program tangibly embodied on a computer readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the substation storage battery state identification method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the method of state identification of the substation battery pack in any other suitable way (e.g. by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. The state identification method of the substation storage battery pack is characterized by comprising the following steps of:
Periodically collecting a first storage battery pack end voltage value, a first direct current bus current value, a first storage battery pack current value, a second storage battery pack end voltage value, a second direct current bus current value, a second storage battery pack current value, a third storage battery pack end voltage value, a third direct current bus current value and a third storage battery pack current value of a transformer substation;
If the first storage battery current value, the second storage battery current value and the third storage battery current value do not meet preset conditions, determining a first comparison result according to the first storage battery current value, the second storage battery current value and the third storage battery current value, determining a second comparison result according to the first storage battery terminal voltage value, the second storage battery terminal voltage value and the third storage battery terminal voltage value, determining a third comparison result according to the first direct current bus voltage value, the second direct current bus voltage value and the third direct current bus voltage value, and determining a fourth comparison result according to the first direct current bus current value, the first storage battery current value, the second direct current bus current value and the second storage battery current value;
And determining the state information of the substation storage battery pack according to the first comparison result, the second comparison result, the third comparison result and the fourth comparison result.
2. The method according to claim 1, characterized in that:
the first storage battery voltage value, the second storage battery voltage value and the third storage battery voltage value are storage battery voltage values of the same transformer substation, which are acquired at different moments;
the first direct current bus voltage value, the second direct current bus voltage value and the third direct current bus voltage value are the direct current bus voltage values of the same transformer substation acquired at different moments;
The first storage battery current value, the second storage battery current value and the third storage battery current value are storage battery current values of the same transformer substation, which are acquired at different moments;
the first direct current bus current value, the second direct current bus current value and the third direct current bus current value are direct current bus current values of the same transformer substation, which are acquired at different moments.
3. The method as recited in claim 1, further comprising:
If the first storage battery current value, the second storage battery current value and the third storage battery current are all negative values, determining that the first storage battery current value, the second storage battery current value and the third storage battery current value meet preset conditions, and determining that the substation storage battery is in a charging state.
4. The method of claim 1, wherein the determining a first comparison result from the first battery pack current value, the second battery pack current value, and the third battery pack current value, determining a second comparison result from the first battery pack terminal voltage value, the second battery pack terminal voltage value, and the third battery pack terminal voltage value, determining a third comparison result from the first dc bus voltage value, the second dc bus voltage value, and the third dc bus voltage value, and determining a fourth comparison result from the first dc bus current value, the first battery pack current value, the second dc bus current value, and the second battery pack current value comprises:
Determining a first comparison result according to the comparison results of the first storage battery current value, the second storage battery current value and the third storage battery current value with a preset value;
Determining a second comparison result according to the comparison result of the first storage battery pack terminal voltage value, the second storage battery pack terminal voltage value and the third storage battery pack terminal voltage value;
Determining a third comparison result according to the comparison result of the first direct current bus voltage value, the second direct current bus voltage value and the third direct current bus voltage value;
And determining a fourth comparison result according to the comparison result of the first direct current bus current value and the absolute value of the first storage battery current value and the comparison result of the second direct current bus current value and the absolute value of the second storage battery current value.
5. The method of claim 4, wherein determining the status information of the substation storage battery according to the first, second, third, and fourth comparison results comprises:
And if the first comparison result, the second comparison result, the third comparison result and the fourth comparison result all meet the preset conditions, determining that the substation storage battery pack is in a discharging state.
6. The method of claim 4, wherein determining the status information of the substation storage battery according to the first, second, third, and fourth comparison results comprises:
And if at least one of the first comparison result, the second comparison result, the third comparison result and the fourth comparison result does not meet the preset condition, determining that the substation storage battery pack is in a charging state.
7. The method as recited in claim 5, further comprising:
and if the state of the storage battery pack of the transformer substation is determined to be a discharging state, generating discharging alarm information and sending the discharging alarm information to an alarm center.
8. A state recognition device of a substation storage battery pack, comprising:
The transformer substation information acquisition module is used for periodically acquiring a first storage battery pack end voltage value, a first direct current bus current value, a first storage battery pack current value, a second storage battery pack end voltage value, a second direct current bus current value, a second storage battery pack current value, a third storage battery pack end voltage value, a third direct current bus current value and a third storage battery pack current value of a transformer substation;
The comparison result determining module is configured to determine a first comparison result according to the first battery pack current value, the second battery pack current value and the third battery pack current value, determine a second comparison result according to the first battery pack terminal voltage value, the second battery pack terminal voltage value and the third battery pack terminal voltage value, determine a third comparison result according to the first direct current bus voltage value, the second direct current bus voltage value and the third direct current bus voltage value, and determine a fourth comparison result according to the first direct current bus current value, the first battery pack current value, the second direct current bus current value and the second battery pack current value if the first battery pack current value, the second battery pack current value and the third battery pack current value do not meet a preset condition;
And the substation storage battery pack state determining module is used for determining state information of the substation storage battery pack according to the first comparison result, the second comparison result, the third comparison result and the fourth comparison result.
9. An electronic device, the electronic device comprising:
At least one processor; and
A memory communicatively coupled to the at least one processor; wherein,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the substation battery state identification method of any one of claims 1-7.
10. A computer readable storage medium, characterized in that it stores computer instructions for causing a processor to implement the substation battery state identification method according to any one of claims 1-7 when executed.
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| CN202410193490.5A CN117907853A (en) | 2024-02-21 | 2024-02-21 | State identification method, device, equipment and medium for substation storage battery pack |
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