CN113960362B - Early warning method, system, equipment and storage medium of energy storage EMS - Google Patents
Early warning method, system, equipment and storage medium of energy storage EMS Download PDFInfo
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Abstract
The invention relates to the field of energy storage early warning, and discloses an early warning method, an early warning system, early warning equipment and a storage medium for energy storage EMS. The method comprises the following steps: the electric energy reading system measures electric energy data output by the energy storage battery and judges whether the electric energy data are direct current data or not; if the direct current data is the direct current data, acquiring a recording timestamp, packaging the recording timestamp and the electric energy data to obtain measurement data, and sending the measurement data to an energy storage EMS management system; if the measured data is not the direct current data, calculating a total distortion rate corresponding to the electric energy data, packaging the total distortion rate and the electric energy data to obtain measured data, and sending the measured data to an energy storage EMS management system; the energy storage EMS management system receives the measurement data, reads the register identification of the measurement data, and judges whether the measurement data exceeds a preset electric energy threshold value or not based on the register identification; and if the preset electric energy threshold value is exceeded, sending the early warning information to a preset management port.
Description
Technical Field
The invention relates to the field of energy storage early warning, in particular to an early warning method, an early warning system, early warning equipment and a storage medium for energy storage EMS.
Background
The electric energy that energy storage equipment will store releases the demand for external in order to deal with the electric energy, because the rise of intelligent electric motor car in the field of charging for the energy storage equipment demand also constantly increases, and what energy storage equipment released when giving intelligent electric motor car transmitted is the direct current. And when the intelligent electric vehicle is released to the intelligent electric vehicle, the flow of the electric vehicle can be different due to different time periods. The charging costs of electric vehicles may be greater during the day and less during the night, and dealing with this change requires improved equipment to accommodate this need. Whether the power calculation of charging can not be broken through in the daytime or at night, otherwise the consumed large electric energy can not be returned to compensate the labor, and the commercial realization is unreasonable.
On the basis of commercial application of charging for the intelligent electric vehicle based on the energy storage device, the multifunctional micro-grid is formed, namely, the micro-grid is supported under the condition that the fluctuation of a main power grid is unstable, the micro-grid can be used as a temporary power grid to replace the main power grid to supply power, at the moment, alternating current is used for supplying power to the outside, and direct current is switched into alternating current. However, the attention points of alternating current and direct current in the frequency variation process are different, and a technology capable of switching and monitoring the transmission state of the direct current and the alternating current is needed to solve the technical problem that the equipment monitoring of the current energy storage equipment in the direct current and alternating current output processes cannot meet the actual energy output condition.
Disclosure of Invention
The invention mainly aims to solve the technical problem that the equipment monitoring cannot meet the actual energy output condition in the direct current and alternating current output process of the conventional energy storage equipment.
The invention provides a pre-warning method of an energy storage EMS (energy management system), which is applied to a pre-warning system of the energy storage EMS, and comprises the following steps: the energy storage EMS management system and the electric energy reading system are in communication connection based on an MODBUS-RTU protocol, and the early warning method of the energy storage EMS comprises the following steps:
the electric energy reading system measures electric energy data output by an energy storage battery and judges whether the electric energy data are direct current data or not;
if the direct current data is the direct current data, acquiring a recording timestamp, packaging the recording timestamp and the electric energy data to obtain measurement data, and sending the measurement data to the energy storage EMS management system;
if the measured data is not the direct current data, calculating a total distortion rate corresponding to the electric energy data, packaging the total distortion rate and the electric energy data to obtain measured data, and sending the measured data to the energy storage EMS management system;
the energy storage EMS management system receives the measurement data, reads a register identifier of the measurement data, and judges whether the measurement data exceeds a preset electric energy threshold value or not based on the register identifier;
and if the preset electric energy threshold value is exceeded, sending the early warning information to a preset management port.
Optionally, in a first implementation manner of the first aspect of the present invention, the calculating a total distortion rate corresponding to the electric energy data includes:
measuring the voltage and the current of a first phase based on a preset measurement period to obtain a first phase voltage set and a first phase current set;
and calculating a first phase voltage distortion rate corresponding to the first phase voltage set according to a preset voltage distortion algorithm, and calculating a first phase current distortion rate corresponding to the first phase current set according to a preset current distortion algorithm.
Optionally, in a second implementation manner of the first aspect of the present invention, the calculating, according to a preset voltage distortion algorithm, a first phase voltage distortion rate corresponding to the first phase voltage set includes:
reading a first set of phase voltages { U }1，U2，U3，U 4，…，U nH, data ordering of U nThe voltage value measured at the nth time is n, and n is an integer;
calculating a total distortion rate of the first phase voltage through a voltage distortion rate formula based on the data sorting, wherein the voltage distortion rate formula comprises:
optionally, in a third implementation manner of the first aspect of the present invention, the calculating, according to a preset current distortion algorithm, a first phase current distortion rate corresponding to the first phase current set includes:
reading first phase current set { I1，I2，I3，I4，…，InH, wherein InThe current value measured at the nth time is n, and n is an integer;
calculating a first phase current total distortion rate based on the data sorting through a current distortion rate formula, wherein the current distortion rate formula comprises:
optionally, in a fourth implementation manner of the first aspect of the present invention, the determining, based on the register identifier, whether the measurement data exceeds a preset power threshold includes:
inquiring an electric energy threshold corresponding to the register identification;
and judging whether the measured data corresponding to the register identification exceeds the electric energy threshold value.
Optionally, in a fifth implementation manner of the first aspect of the present invention, when the registered identifier is an identifier corresponding to a recording timestamp, the determining, based on the registered identifier, whether the measured data exceeds a preset power threshold includes:
inquiring an electric energy power price table corresponding to the recording timestamp;
calculating electric energy power based on current data and voltage data in the measurement data;
and judging whether the electric energy power exceeds the power value of the electric energy power price table.
Optionally, in a sixth implementation manner of the first aspect of the present invention, the determining whether the electric energy data is dc data includes:
and judging whether the mutual induction current in the electric energy data changes the direction or not.
The second aspect of the present invention provides an early warning system for an energy storage EMS, where the early warning system for the energy storage EMS includes:
EMS management system, electric energy reading system;
the electric energy reading system is used for measuring electric energy data output by the energy storage battery and judging whether the electric energy data are direct current data or not;
if the direct current data is the direct current data, acquiring a recording timestamp, packaging the recording timestamp and the electric energy data to obtain measurement data, and sending the measurement data to the energy storage EMS management system;
if the measured data is not the direct current data, calculating a total distortion rate corresponding to the electric energy data, packaging the total distortion rate and the electric energy data to obtain measured data, and sending the measured data to the energy storage EMS management system;
the energy storage EMS management system is used for receiving the measurement data, reading a register identifier of the measurement data, and judging whether the measurement data exceeds a preset electric energy threshold value or not based on the register identifier;
and if the preset electric energy threshold value is exceeded, sending the early warning information to a preset management port.
The third aspect of the present invention provides an early warning device for an energy storage EMS, including: a memory having instructions stored therein and at least one processor, the memory and the at least one processor interconnected by a line; the at least one processor calls the instructions in the memory to enable the early warning device of the energy storage EMS to execute the early warning method of the energy storage EMS.
A fourth aspect of the present invention provides a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to execute the above-mentioned method for warning of an energy storage EMS.
In the embodiment of the invention, the electric energy reading system arranged in the energy output channel is used for analyzing whether the current output condition of the energy storage equipment is direct current output or alternating current output, signals are processed in different modes in the electric energy reading system, and early warning management is carried out in the energy storage EMS management system to realize different early warning modes, so that the technical problem that the equipment monitoring of the energy storage equipment cannot meet the actual energy output condition in the direct current and alternating current output processes is solved.
Drawings
Fig. 1 is a schematic diagram of an embodiment of an early warning method for an energy storage EMS according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an embodiment of an early warning system of an energy storage EMS according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another embodiment of an early warning system of an energy storage EMS according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an embodiment of an early warning device of an energy storage EMS according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides an early warning method, system, equipment and storage medium for energy storage EMS.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," or "having," and any variations thereof, are intended to cover non-exclusive inclusions, 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.
For convenience of understanding, a detailed process of an embodiment of the present invention is described below, and referring to fig. 1, an embodiment of an energy storage EMS early warning method in an embodiment of the present invention is applied to an energy storage EMS early warning system, where the energy storage EMS early warning system includes: the energy storage EMS management system and the electric energy reading system are in communication connection based on an MODBUS-RTU protocol, and the early warning method of the energy storage EMS comprises the following steps:
101. the electric energy reading system measures electric energy data output by the energy storage battery and judges whether the electric energy data are direct current data or not;
in this embodiment, the electric energy reading system may be an electric energy meter, or may be a combination of an ammeter and a voltmeter, the electric energy data has at least current data and voltage data, and the frequency, the active power, the reactive power, the current imbalance and the voltage imbalance may be added based on the application.
Further, "judging whether the electric energy data is the dc data" may specifically be performed:
1011. and judging whether the mutual induction current in the electric energy data changes the direction or not.
In this embodiment, a current transformer may be added to the electric energy reading system to determine a current condition, the current transformer may be added in a three-phase four-wire manner, a three-phase three-wire manner, or the like, and it is determined whether a change in direction of a current flow occurs in the current transformer, if the change in direction occurs, the current flow is an alternating current, if the change in direction does not occur, the current flow is a direct current, and it is determined that a current flow time window may be 1S, 2S, 3S, 4S, or the like.
102. If the direct current data is the direct current data, acquiring a recording timestamp, packaging the recording timestamp and the electric energy data to obtain measurement data, and sending the measurement data to an energy storage EMS management system;
in this embodiment, if the current flow direction does not change, the data at this time is determined to be dc data, and the smart vehicle is being charged. In order to calculate the amount of money for the payment system, the current time stamp, that is, the recording time stamp, is needed, and the recording time stamp and the electric energy data are packaged to obtain the measurement data. It should be noted here that the time stamping may be performed based on a time stamp manner, for example, as identified as 0170H as 00: 00-01: a timestamp of 00, then 0171H is taken as 01: 00-02: the time stamp of 00, by analogy, may also be divided by a finer identifier, which is a dividing manner and is not limited here. And packaging the timestamp and the electric energy data together to serve as measurement data and sending the measurement data to an energy storage EMS management system.
103. If the measured data is not the direct current data, calculating a total distortion rate corresponding to the electric energy data, packaging the total distortion rate and the electric energy data to obtain measured data, and sending the measured data to an energy storage EMS management system;
in this embodiment, the power data is dc data, and therefore the total distortion rate needs to be measured, because the distortion rate is too large, which may cause the energy storage device to have too much heat, and the device receiving the power data may not work normally, which is different from the dc current and needs to be further monitored. Note that this power data is an alternating current based on circuit conversion. When the three-phase alternating current is simulated, the total distortion rate of current and voltage of each phase of the three-phase alternating current needs to be calculated, then the data and the electric energy data are packaged into measurement data, and the electric energy data are transmitted to an energy storage EMS management system through an MODBUS-RTU protocol, so that at least 8 identifiers, such as current data, voltage data, the total distortion rate of the first phase current, the total distortion rate of the second phase current, the total distortion rate of the third phase current, the total distortion rate of the first phase voltage, the total distortion rate of the second phase voltage, the total distortion rate of the third phase voltage and the like, are different.
Further, "calculating the total distortion rate corresponding to the electrical energy data" may specifically perform:
1031. measuring the voltage and the current of a first phase based on a preset measurement period to obtain a first phase voltage set and a first phase current set;
1032. and calculating a first phase voltage distortion rate corresponding to the first phase voltage set according to a preset voltage distortion algorithm, and calculating a first phase current distortion rate corresponding to the first phase current set according to a preset current distortion algorithm.
In step 1031-1，U2，U3，U 4，…，U nAnd a first phase current set { I }1，I2，I3，I4，…，InIn which U nIs the voltage value measured at the nth time, and n is an integer.
Further, "calculating a first phase voltage distortion rate corresponding to the first phase voltage set according to a preset voltage distortion algorithm" may specifically be performed as follows:
10321. reading a first set of phase voltages { U }1，U2，U3，U 4，…，U nH, data ordering of U nThe voltage value measured at the nth time is n, and n is an integer;
10322. calculating a total distortion rate of the first phase voltage through a voltage distortion rate formula based on the data sorting, wherein the voltage distortion rate formula comprises:
in steps 10321 and 10322, a first phase voltage set { U }1，U2，U3，U 4，…，U nThe method is consistent with other phase acquisition processes and processing processes, only the first phase processing needs to be explained in the step, and the voltage distortion rate formula is as follows:
U nis the voltage value measured at the nth time, and n is an integer.
Further, "calculating a first phase current distortion rate corresponding to the first phase current set according to a preset current distortion algorithm" may specifically be performed as follows:
10323. reading first phase current set { I1，I2，I3，I4，…，InH, wherein InThe current value measured at the nth time is n, and n is an integer;
10324. calculating a total distortion rate of the first phase current through a current distortion rate formula based on the data sorting, wherein the current distortion rate formula comprises:
in 10321, 10322 steps, a first phase current set { I }1，I2，I3，I4，…，InThe method is consistent with the acquisition process of other phases, wherein the first phase current and the first phase voltage are acquired simultaneously, and the other phases can be acquired in parallel without necessarily acquiring simultaneously, and the current distortion rate formula is as follows:
Inthe current value measured at the nth time is n, and n is an integer.
104. The energy storage EMS management system receives the measurement data, reads the register identification of the measurement data, and judges whether the measurement data exceeds a preset electric energy threshold value or not based on the register identification;
in this embodiment, the register identifier is a register address of data stored in the power reading system, the register address is directly identified as the identifier, data of each different power threshold value can be separated from the register identifier, and the threshold value of each power parameter is compared in the energy storage EMS management system.
Further, "judging whether the measured data exceeds the preset power threshold based on the registered identifier" may specifically perform:
1041. inquiring an electric energy threshold corresponding to the register identification;
1042. and judging whether the measured data corresponding to the register identification exceeds the electric energy threshold value.
In step 1041-1042, the registration flag 0074H is the flag of the total distortion rate of the first phase voltage, and the total distortion rate of the first phase voltage in the measured data is 0.56%, and the power threshold is 2.3%, which is not exceeded.
Further, when the registration flag is a flag corresponding to the recording timestamp, "judge whether the measured data exceeds the preset power threshold based on the registration flag", specifically, the following steps may be performed:
1043. inquiring an electric energy power price table corresponding to the recording timestamp;
1044. calculating the electric energy power based on the current data and the voltage data in the measurement data;
1045. and judging whether the electric energy power exceeds the power value of the electric energy power price meter.
In the 1043-1045 step, there are different output power prices per unit time in different time periods in the electric energy function price table, for example, 0170H is taken as 00: 00-01: time stamp of 00, at 00: 00-01: the price of 250-. And the calculated electric energy power is 900W, 900W exceeds the power value in the electric energy power meter, which indicates that the charging based on the price table cannot be carried out.
105. And if the preset electric energy threshold value is exceeded, sending the early warning information to a preset management port.
In this embodiment, it can be understood that the alarm of the dc power is sent to the management port, and if the alarm of the ac power is present, the alarm of the ac power is sent to the management port.
In the embodiment of the invention, the electric energy reading system arranged in the energy output channel is used for analyzing whether the current output condition of the energy storage equipment is direct current output or alternating current output, signals are processed in different modes in the electric energy reading system, and early warning management is carried out in the energy storage EMS management system to realize different early warning modes, so that the technical problem that the equipment monitoring of the energy storage equipment cannot meet the actual energy output condition in the direct current and alternating current output processes is solved.
In the above description of the early warning method for the energy storage EMS according to the embodiment of the present invention, referring to fig. 2, the early warning system for the energy storage EMS according to the embodiment of the present invention is described below, where the early warning system for the energy storage EMS according to the embodiment of the present invention includes:
an EMS management system 201, an electric energy reading system 202;
the electric energy reading system 202 is configured to measure electric energy data output by the energy storage battery, and determine whether the electric energy data is direct current data;
if the direct current data is the direct current data, acquiring a recording timestamp, packaging the recording timestamp and the electric energy data to obtain measurement data, and sending the measurement data to the energy storage EMS management system;
if the measured data is not the direct current data, calculating a total distortion rate corresponding to the electric energy data, packaging the total distortion rate and the electric energy data to obtain measured data, and sending the measured data to the energy storage EMS management system;
the energy storage EMS management system 201 is configured to receive the measurement data, read a register identifier of the measurement data, and determine whether the measurement data exceeds a preset power threshold based on the register identifier;
and if the preset electric energy threshold value is exceeded, sending the early warning information to a preset management port.
In the embodiment of the invention, the electric energy reading system arranged in the energy output channel is used for analyzing whether the current output condition of the energy storage equipment is direct current output or alternating current output, signals are processed in different modes in the electric energy reading system, and early warning management is carried out in the energy storage EMS management system to realize different early warning modes, so that the technical problem that the equipment monitoring of the energy storage equipment cannot meet the actual energy output condition in the direct current and alternating current output processes is solved.
Referring to fig. 3, in another embodiment of the early warning system for energy storage EMS according to the embodiment of the present invention, the early warning system for energy storage EMS includes:
an EMS management system 201, an electric energy reading system 202;
the electric energy reading system 201 is configured to measure electric energy data output by an energy storage battery, and determine whether the electric energy data is direct current data;
if the direct current data is the direct current data, acquiring a recording timestamp, packaging the recording timestamp and the electric energy data to obtain measurement data, and sending the measurement data to the energy storage EMS management system;
if the measured data is not the direct current data, calculating a total distortion rate corresponding to the electric energy data, packaging the total distortion rate and the electric energy data to obtain measured data, and sending the measured data to the energy storage EMS management system;
the energy storage EMS management system 202 is configured to receive the measurement data, read a register identifier of the measurement data, and determine whether the measurement data exceeds a preset power threshold based on the register identifier;
and if the preset electric energy threshold value is exceeded, sending the early warning information to a preset management port.
Wherein the power reading system 201 comprises:
a period measuring unit 2011, configured to measure a voltage and a current of the first phase based on a preset measurement period, to obtain a first phase voltage set and a first phase current set;
the calculating unit 2012 is configured to calculate a first phase voltage distortion rate corresponding to the first phase voltage set according to a preset voltage distortion algorithm, and calculate a first phase current distortion rate corresponding to the first phase current set according to a preset current distortion algorithm.
Wherein the computing unit 2012 is specifically configured to:
reading a first set of phase voltages { U }1，U2，U3，U 4，…，U nH, data ordering of U nThe voltage value measured at the nth time is n, and n is an integer;
calculating a total distortion rate of the first phase voltage through a voltage distortion rate formula based on the data sorting, wherein the voltage distortion rate formula comprises:
wherein the computing unit 2012 is specifically configured to:
taking a first phase current set { I1，I2，I3，I4，…，InH, wherein InThe current value measured at the nth time is n, and n is an integer;
calculating a first phase current total distortion rate based on the data sorting through a current distortion rate formula, wherein the current distortion rate formula comprises:
the energy storage EMS management system 202 is specifically configured to:
inquiring an electric energy threshold corresponding to the register identification;
and judging whether the measured data corresponding to the register identification exceeds the electric energy threshold value.
The energy storage EMS management system 202 is further specifically configured to:
inquiring an electric energy power price table corresponding to the recording timestamp;
calculating electric energy power based on current data and voltage data in the measurement data;
and judging whether the electric energy power exceeds the power value of the electric energy power price table.
The electric energy reading system 201 is specifically configured to:
and judging whether the mutual induction current in the electric energy data changes the direction or not.
In the embodiment of the invention, the electric energy reading system arranged in the energy output channel is used for analyzing whether the current output condition of the energy storage equipment is direct current output or alternating current output, signals are processed in different modes in the electric energy reading system, and early warning management is carried out in the energy storage EMS management system to realize different early warning modes, so that the technical problem that the equipment monitoring of the energy storage equipment cannot meet the actual energy output condition in the direct current and alternating current output processes is solved.
Fig. 2 and fig. 3 describe the early warning system of the energy storage EMS in the embodiment of the present invention in detail from the perspective of the modular functional entity, and the early warning device of the energy storage EMS in the embodiment of the present invention is described in detail from the perspective of hardware processing.
Fig. 4 is a schematic structural diagram of an energy storage EMS early warning device 400 according to an embodiment of the present invention, which may have a relatively large difference due to different configurations or performances, and may include one or more processors (CPUs) 410 (e.g., one or more processors) and a memory 420, and one or more storage media 430 (e.g., one or more mass storage devices) for storing applications 433 or data 432. Memory 420 and storage medium 430 may be, among other things, transient or persistent storage. The program stored in the storage medium 430 may include one or more modules (not shown), each of which may include a series of instruction operations in the early warning apparatus 400 of the energy storage EMS. Still further, the processor 410 may be configured to communicate with the storage medium 430, and execute a series of instruction operations in the storage medium 430 on the warning device 400 of the energy storage EMS.
The energy storage EMS based pre-warning device 400 may also include one or more power supplies 440, one or more wired or wireless network interfaces 450, one or more input-output interfaces 460, and/or one or more operating systems 431, such as Windows service, Mac OS X, Unix, Linux, FreeBSD, and the like. Those skilled in the art will appreciate that the configuration of the energy storage EMS warning device illustrated in fig. 4 does not limit the energy storage EMS-based warning device, and may include more or fewer components than those illustrated, or some components in combination, or a different arrangement of components.
The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium, and may also be a volatile computer-readable storage medium, where instructions are stored, and when the instructions are executed on a computer, the instructions cause the computer to execute the steps of the warning method for the energy storage EMS.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described system or system and unit may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. An early warning method for an energy storage EMS (energy management system), which is applied to an early warning system for the energy storage EMS, wherein the early warning system for the energy storage EMS comprises: the energy storage EMS management system and the electric energy reading system are in communication connection based on an MODBUS-RTU protocol, and the early warning method of the energy storage EMS comprises the following steps:
the electric energy reading system measures electric energy data output by an energy storage battery and judges whether the electric energy data are direct current data or not;
if the direct current data is the direct current data, acquiring a recording timestamp, packaging the recording timestamp and the electric energy data to obtain measurement data, and sending the measurement data to the energy storage EMS management system;
if the measured data is not the direct current data, calculating a total distortion rate corresponding to the electric energy data, packaging the total distortion rate and the electric energy data to obtain measured data, and sending the measured data to the energy storage EMS management system;
the energy storage EMS management system receives the measurement data, reads a register identifier of the measurement data, and judges whether the measurement data exceeds a preset electric energy threshold value or not based on the register identifier;
if the current energy exceeds the preset electric energy threshold, sending the early warning information to a preset management port;
wherein the determining whether the measurement data exceeds a preset power threshold based on the registration identifier comprises:
inquiring an electric energy threshold corresponding to the register identification;
and judging whether the measured data corresponding to the register identification exceeds the electric energy threshold value.
2. The method for warning about energy storage EMS according to claim 1, wherein the calculating the total distortion rate corresponding to the electric energy data includes:
measuring the voltage and the current of a first phase based on a preset measurement period to obtain a first phase voltage set and a first phase current set;
and calculating a first phase voltage distortion rate corresponding to the first phase voltage set according to a preset voltage distortion algorithm, and calculating a first phase current distortion rate corresponding to the first phase current set according to a preset current distortion algorithm.
3. The method of claim 2, wherein the calculating a first phase voltage distortion rate corresponding to the first phase voltage set according to a preset voltage distortion algorithm comprises:
reading a first set of phase voltages { U }1，U2，U3，U 4，…，U nH, data ordering of U nThe voltage value measured at the nth time is n, and n is an integer;
calculating a total distortion rate of the first phase voltage through a voltage distortion rate formula based on the data sorting, wherein the voltage distortion rate formula comprises:
4. the method of claim 2, wherein the calculating the first phase current distortion rate corresponding to the first phase current set according to a preset current distortion algorithm comprises:
reading first phase current set { I1，I2，I3，I4，…，InH, wherein InFor the current measured n timesThe value n is an integer;
calculating a first phase current total distortion rate based on the data sorting through a current distortion rate formula, wherein the current distortion rate formula comprises:
5. the warning method for energy storage EMS according to claim 1, wherein when the registered identification is an identification corresponding to a record timestamp, the determining whether the measured data exceeds a preset power threshold based on the registered identification includes:
inquiring an electric energy power price table corresponding to the recording timestamp;
calculating electric energy power based on current data and voltage data in the measurement data;
and judging whether the electric energy power exceeds the power value of the electric energy power price table.
6. The method as claimed in claim 1, wherein the determining whether the power data is dc data includes:
and judging whether the mutual induction current in the electric energy data changes the direction or not.
7. The early warning system of the energy storage EMS is characterized by comprising the following components:
EMS management system, electric energy reading system;
the electric energy reading system is used for measuring electric energy data output by the energy storage battery and judging whether the electric energy data are direct current data or not;
if the direct current data is the direct current data, acquiring a recording timestamp, packaging the recording timestamp and the electric energy data to obtain measurement data, and sending the measurement data to the energy storage EMS management system;
if the measured data is not the direct current data, calculating a total distortion rate corresponding to the electric energy data, packaging the total distortion rate and the electric energy data to obtain measured data, and sending the measured data to the energy storage EMS management system;
the energy storage EMS management system is used for receiving the measurement data, reading a register identifier of the measurement data, and judging whether the measurement data exceeds a preset electric energy threshold value or not based on the register identifier;
if the current energy exceeds the preset electric energy threshold, sending the early warning information to a preset management port;
wherein the determining whether the measurement data exceeds a preset power threshold based on the registration identifier comprises:
inquiring an electric energy threshold corresponding to the register identification;
and judging whether the measured data corresponding to the register identification exceeds the electric energy threshold value.
8. An early warning apparatus of an energy storage EMS, the early warning apparatus of the energy storage EMS comprising: a memory having instructions stored therein and at least one processor, the memory and the at least one processor interconnected by a line;
the at least one processor invokes the instructions in the memory to cause the energy storage EMS pre-warning device to perform the energy storage EMS pre-warning method of any one of claims 1-6.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the method for warning of an energy storage EMS according to any one of claims 1 to 6.
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| CN109428399B (en) * | 2017-08-28 | 2022-02-08 | 国家能源投资集团有限责任公司 | Energy storage system monitoring method, device and system |
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