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CN-121367288-B - Remote discharging control system and method for storage battery for distribution network communication

CN121367288BCN 121367288 BCN121367288 BCN 121367288BCN-121367288-B

Abstract

The invention relates to the technical field of power distribution network communication power supply and operation and maintenance monitoring, and particularly discloses a remote discharging control system and method for a storage battery for distribution network communication. The method comprises the steps of generating a task configuration set and a control initial value through obtaining remote setting parameters and a communication strategy through standardization processing, collecting voltage and current data and calculating a state of charge to generate feedforward compensation quantity, selecting control parameters based on interval indexes, carrying out duty ratio calculation and power adjustment by combining feedforward compensation, generating a control instruction and confirming according to thermal state and power deviation, executing safety judgment and event record to generate recovery guide, and finally checking the data and adjusting the parameter set. The method realizes the accurate control and multiple protection of the discharging process of the storage battery, improves the reliability, the control precision and the thermal management efficiency of the system, and enhances the fault handling and data integrity guaranteeing capability.

Inventors

  • ZHU LINYI
  • CHENG GANG
  • LI WENYE

Assignees

  • 九源云(广州)智能科技有限公司

Dates

Publication Date
20260512
Application Date
20251010

Claims (9)

  1. 1. The remote discharging control method for the storage battery for the distribution network communication is characterized by comprising the following steps of: Acquiring a remote setting parameter and a communication robustness strategy, normalizing through unit conversion, dimension correction, time reference alignment and field completion based on an electronic load capacity list and a rated protection threshold of a storage battery, and checking interval continuity and threshold order to obtain a task configuration set; Extracting target power, cut-off voltage and duration from a task configuration set, performing boundary check based on intersection operation of an upper limit of an electronic load power bearing list and a site available window and a preset rounding strategy, and obtaining a control initial value through mapping of a power target caliber, a protection threshold caliber and a task scheduling caliber; Constructing a issuing message by segmentation based on instruction receipt requirements, retry times, intervals and breakpoint continuous transmission rules by using a control initial value and a communication robustness strategy, issuing the issuing message to a local controller with time synchronization information, writing a parameter area, refreshing an initial register area of an internal control loop and configuring a local task timer to obtain an initialization completion mark, wherein the control initial value comprises a numerical set of a power target caliber, a protection threshold caliber and a task scheduling caliber; Based on an initialization completion mark and a control initial value, a local acquisition timer is utilized to synchronize pulse triggering voltage and current measuring channels, differential access and magneto-electric sensors are adopted to synchronously sample, abnormal points are removed, smoothing processing and baseline regression are carried out to denoise, a state sequence is obtained, three elements of sampling time, a voltage sample and a current sample are recorded in a structured mode by the state sequence, a state of charge is calculated, an interval index is generated based on a preset interval of a segmentation parameter control table, and feedforward compensation quantity is generated based on a compensation mapping item through voltage attenuation evaluation; selecting a subsection parameter control table item based on the interval index and the hysteresis rule, and performing duty ratio calculation and power deviation processing based on the power error signal and the integral amplitude limit by combining the feedforward compensation quantity to generate a compact mark; According to the tightening mark, based on a three-section threshold value and hysteresis logic, regulating the flow of the cooling liquid and the refrigerating power to obtain a thermal state, generating a power write-back instruction based on a power allowable bandwidth and a duty ratio constraint boundary, and issuing a confirmation to obtain a write-back confirmation mark; generating an emergency stop mark by executing overcurrent, overtemperature and undervoltage judgment based on the thermal state and the state sequence, sorting event records based on the time index coupling relation, and generating a recovery flow guide based on a guide template; Checking and supplementing data based on resume flow guide, state sequence, sampling beat and breakpoint continuous transmission rules, generating structured report data based on capacity metering caliber, accumulating and tidying curve element sets according to capacity metering caliber registered in task configuration set, generating a core-capacity curve basic sequence, distinguishing supplemented intervals in a dotted line or marked mode in the basic sequence when a catalog item contains supplemented identifiers, writing parameter effective identifiers in the basic sequence when the catalog item carries a write-back confirmation mark, merging the curve basic sequence, the supplemented intervals and the parameter effective identifiers into curve segment sets, associating interval indexes and heat dissipation working levels of each curve segment when the curve segment is generated, ordering parameter change lists according to time and interval double, generating a change segment set, adjusting the task configuration set based on the curve segment sets and the change segment sets, and obtaining an adjustment parameter set.
  2. 2. The method of claim 1, wherein remotely setting parameters comprises: The remote setting parameters comprise target power, cut-off voltage, duration, a heat dissipation threshold table, a sampling period, recording granularity, concurrency quantity and site identification.
  3. 3. The method of claim 1, wherein the communication robustness policy comprises: The communication robustness policy includes instruction receipt requirements, retry times and intervals, link health decision thresholds, breakpoint resume rules, and time synchronization rules.
  4. 4. The method of claim 1, wherein generating the feedforward compensation amount further comprises: Calculating the state of charge through fusion of the capacity accumulation amount and the equivalent static voltage from the state sequence, presetting a continuous interval and a hysteresis rule based on a segmentation parameter control table, judging and marking the attribution of the interval, and attaching an interval index to a state sequence expansion area to obtain the state of charge and the interval index; And according to the state sequence and the state of charge, executing voltage attenuation attribution and scale conversion by combining the segmentation parameter control table and the compensation mapping entry, and generating a feedforward compensation quantity when the interval boundary hysteresis rule is satisfied.
  5. 5. The method of claim 1, wherein generating a compact token further comprises: acquiring an interval index, selecting parameter entries comprising proportional parameters, integral parameters, differential parameters, integral limiting and power allowable bandwidths from a segmentation parameter control table based on hysteresis rules and a last processing window parameter entry, and obtaining a segmentation parameter control table entry; Inputting the subsection parameter control table item and the feedforward compensation quantity into a proportional-integral-differential control link, performing duty ratio calculation based on component decomposition, integral limiting constraint and duty ratio constraint boundary of a power error signal, and processing by a time adjacent smoothing strategy to obtain duty ratio and power deviation; And carrying out in-band, approaching to a band boundary or out-of-range state marking and sliding statistics judgment on the power deviation based on a power allowable bandwidth and a jitter suppression threshold, and generating a tightening mark through an integral amplitude limiting tightening and progressive compression strategy, wherein the progressive compression strategy limits the duty ratio variation amplitude of a plurality of time indexes in the future by a fixed step length, and ensures that the compressed duty ratio is still within a duty ratio constraint boundary, so that the time adjacent difference of control output is kept within a controlled range.
  6. 6. The method of claim 1, wherein obtaining a write-back acknowledgement flag further comprises: Based on the shell temperature of the power device, the temperature of the heat exchange plate, the temperature of the inlet/outlet of the cooling liquid and the tightening mark, the cooling liquid flow and the cooling power are adjusted by the linear adjustment of the rotation speed of the water pump and the opening degree of the valve and the increase of the cooling power duty ratio according to the three-section threshold value and the hysteresis logic, so as to obtain a thermal state; performing primary derating entry, secondary derating entry and recovery entry arrangement on the basis of a power allowable bandwidth boundary and a duty ratio constraint boundary from a thermal state and power deviation through a target correction amount, a continuous window number, a release condition and a slope limit field to obtain a power write-back instruction; And sending the power write-back instruction to a local controller based on a breakpoint continuous transmission rule of a communication robustness strategy, and registering target correction quantity and slope limit loading and continuous window quantity and release conditions to obtain a write-back confirmation mark.
  7. 7. The method of claim 1, wherein generating the resume flow direction further comprises: Acquiring a thermal state and a state sequence, performing transient discrimination through continuous time index overrun judgment and sudden increase discrimination based on an overcurrent threshold, a temperature threshold uplink threshold, an undervoltage threshold and a minimum holding time slot, and performing consistency rechecking through cross comparison of a candidate segment and a continuous window number to obtain an emergency stop mark; Classifying and merging the same window coupling event, the adjacent coupling event and the independent event based on the emergency stop mark, the write-back confirmation mark and the time index coupling relation, and assembling the event records through the main event field and the auxiliary factor field; and (3) archiving the event records, cutting the record entries, derating the reserved paragraphs and arranging the heat dissipation fall-back monitoring paragraphs based on the over-temperature type, over-current type and under-voltage type guiding templates to obtain the recovery flow guiding.
  8. 8. The method of claim 1, wherein the process of obtaining the adjustment parameter set further comprises: Acquiring a recovery flow guide and a state sequence, and executing data integrity check and missing repair through adjacent window interpolation repair and parameter snapshot extraction and clock calibration based on a task configuration set sampling beat and breakpoint continuous transmission rule to obtain a complete data set; Generating a nucleation-capacity curve basic sequence by power caliber merging and temperature difference calculation based on a complete data set, a capacity metering caliber and a parameter effective mark, and carrying out structuring treatment by establishing bidirectional indexes of a curve segment set and a change segment set to obtain report data; and generating report data through withdrawal items, solidification items and response piece strategy items based on the change segment set release conditions and curve segment set temperature difference trend to perform parameter write-back, and performing planning update through new task time window, target power and cut-off voltage adjustment to obtain an adjustment parameter set.
  9. 9. A remote discharging control system for a storage battery for distribution network communication, which is applied to the method of any one of claims 1 to 8, and is characterized by comprising: The parameter configuration and issuing module is used for acquiring remote setting parameters and a communication robustness strategy, carrying out standardization, checking and parameter boundary checking, generating a task configuration set and a control initial value, issuing a message to a local controller through a segmented construction based on instruction receipt requirements, retry times, intervals and breakpoint continuous transmission rules by the control initial value and the communication robustness strategy, carrying out parameter area writing, internal control loop initial register refreshing and local task timer configuration, and obtaining an initialization completion mark; the data acquisition and state calculation module is used for acquiring voltage and current based on the initialization completion mark and the control initial value, synchronizing and denoising to obtain a state sequence, and calculating charge state estimation and interval index; The compensation evaluation module is used for carrying out voltage attenuation evaluation on the state sequence and the state of charge and generating feedforward compensation quantity; the control synthesis module is used for selecting a subsection parameter control table item based on the interval index, carrying out duty ratio calculation and power deviation processing by combining the feedforward compensation quantity, and generating a compact mark; The thermal regulation and instruction module is used for regulating cooling and refrigeration parameters according to the compact mark to obtain a thermal state, generating a power write-back instruction and issuing a confirmation to obtain a write-back confirmation mark; the safety judgment and event processing module is used for executing overcurrent, overtemperature and undervoltage judgment based on the thermal state and the state sequence to generate an scram mark, collating event records and generating a recovery flow guide; And the data reorganization and parameter updating module is used for verifying and supplementing data from the recovery flow direction and the state sequence, generating structured report data, adjusting the task configuration set and obtaining an adjustment parameter set.

Description

Remote discharging control system and method for storage battery for distribution network communication Technical Field The invention relates to the technical field of power distribution network communication power supply and operation and maintenance monitoring, in particular to a remote discharging control system and method for a storage battery for distribution network communication. Background In the technical field of communication power supply and operation and maintenance monitoring of a power distribution network, a lead-acid storage battery is commonly configured at a power distribution network communication station as a backup energy source, and the nuclear capacity characterization and discharge inspection are related to the power supply reliability and maintenance plan of communication equipment. At present, the common practice is to rely on field manual access load, discharge is carried out in a constant resistance or constant current mode, data records are scattered, time scales are not uniform, and the remote visual control degree is insufficient. In the discharging process of a wide voltage section, bus voltage is reduced along with time, the traditional constant power control link lacks pre-compensation for voltage attenuation trend, and power target fluctuation and end-stage power downslide frequently occur in the output of a controller, so that the stability and repeatability of a nuclear capacity result are low. The existing sampling links mostly adopt single-ended voltage sampling and shunt resistance sampling, are affected by common mode disturbance, cable voltage drop and temperature drift, voltage and current measurement errors are easy to accumulate at both low-frequency and high-frequency ends, and power closed loop reference is unstable. The proportional-integral-differential control of fixed parameters does not distinguish the phase difference of the charge states, the balance of dynamic response and steady-state deviation in the early, middle and end discharge phases is insufficient, and the time reference management consistent with the power target caliber is lacked, so that the beat drift among different modules is inconsistent with the power caliber. In the aspect of heat management, when the environmental temperature of the outdoor cabinet goes up, the air cooling heat dissipation efficiency is reduced, the temperature difference adjustment between the power device and the cooling medium lacks a segmentation threshold value and hysteresis strategy, the heat dissipation mode is easy to shake, the heat load and the power control are mutually interfered, and then the protection shutdown or the passive derating is triggered, and the discharging process is easy to interrupt. In the aspect of safety protection, the over-current, over-temperature and under-voltage judging links are distributed, the action threshold and the write-back control are not linked, the delay of the remote scram response link is larger, the event record is not in a system, and the whole process tracing and recovery strategy generation is difficult to support. In the communication and data link, the remote parameter issuing, the sampling data ascending and the executing receipt lack of redundancy check, breakpoint continuous transmission and state confirmation mechanisms, which lead to the loss of instructions, sample deletion and time mark dislocation of individual stations under the condition of weak links, the report generation and strategy write-back flow is not closed loop, the core capacity curve, the parameter change list and the next round of task configuration lack of structural association, and the on-site long-term unattended execution continuity and data consistency are difficult to achieve. Disclosure of Invention The invention provides a remote discharging control method of a storage battery for distribution network communication, which comprises the following steps: Acquiring a remote setting parameter and a communication robustness strategy, carrying out standardization, check and parameter boundary inspection based on an electronic load capacity list and a rated protection threshold of a storage battery, generating a task configuration set and a control initial value, and issuing and storing based on instruction receipt requirements and breakpoint continuous transmission rules to obtain an initialization completion mark; Acquiring a state sequence based on local acquisition timer synchronous pulse from an initialization completion mark and a control initial value, calculating a state of charge, generating an interval index based on a preset interval of a segmentation parameter control table, and generating a feedforward compensation quantity based on a compensation mapping item through voltage attenuation evaluation; selecting a subsection parameter control table item based on the interval index and the hysteresis rule, and performing duty ratio calculation and power deviation processing bas