Substation facility power supply load monitoring device and system

Abstract

The invention relates to a substation facility power load monitoring device and system, aims to improve the operation safety and maintenance efficiency of a substation, and comprises a circuit breaker, a data acquisition module, a voltage and temperature monitoring protection module, an electric leakage and overload protection module and a working parameter display module. Operation current, voltage, temperature, power and leakage current can be monitored in real time. The device has the functions of over-voltage, under-voltage and over-temperature alarm and power-off, can be remotely opened and locked, and is suitable for facilities such as lighting, fans, air conditioners and the like. Through communication between the intelligent gateway and the remote control platform, remote monitoring and control are realized, and the problems of insufficient monitoring, slow fault response, incapability of remote operation and the like of an existing system are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of substations, and in particular to a power supply load monitoring device and system for substation facilities. Background Art

[0002] The power supply of substation facilities involves lighting, fans, air conditioners and other facilities. The power supply monitoring system of auxiliary facilities such as lighting, fans, air conditioners, etc. in the substation is not advanced or complete enough to effectively monitor the power consumption of these facilities. When the power supply system fails, the existing monitoring system cannot automatically record the time, cause and specific location of the failure, which makes it difficult to troubleshoot and repair the fault. The daily power load of the substation cannot be monitored in real time, and managers cannot understand the operating status of the facilities at any time, and may not be able to detect potential problems in time. If the facility is abnormal, such as a sudden increase in power load or power failure, the monitoring system cannot issue an alarm notification in time, resulting in managers unable to take countermeasures quickly. The existing system does not support remote control of the start and stop of the power supply. In an emergency, managers cannot quickly cut off or restore the power supply from a remote location, which may affect the efficiency and safety of emergency response.

[0003] In summary, the power supply monitoring function of substation facilities needs to be improved to ensure the normal operation of substations and improve maintenance efficiency. Summary of the invention

[0004] The purpose of this application is to propose a power load monitoring device and system for substation facilities to ensure the normal operation of the substation and improve maintenance efficiency.

[0005] To achieve the above-mentioned purpose, an embodiment of the present application provides a power supply load monitoring device for a substation facility, wherein the power supply load monitoring device for a substation facility is connected to a working circuit of the substation facility, and comprises:

[0006] A circuit breaker, used to control the closing or opening of a working circuit of the substation facility;

[0007] A data acquisition module, used to receive operating parameters of substation facilities; the operating parameters include operating current, operating voltage, ambient temperature, load power and leakage current;

[0008] Voltage monitoring and protection module, used to perform overvoltage alarm control and undervoltage early warning control of substation facilities according to the operating voltage of substation facilities;

[0009] Temperature monitoring and protection module, used to perform temperature early warning control, over-temperature alarm and power-off control, and temperature threshold adjustment of substation facilities according to the ambient temperature of the substation facilities;

[0010] A leakage protection module is used to perform leakage protection control of substation facilities according to the leakage current of the substation facilities;

[0011] An overload protection module is used to perform overload protection control of substation facilities according to the operating current and load power of the substation facilities;

[0012] The working parameter display module is used to display the working parameters.

[0013] Optionally, the overvoltage alarm control includes: when the operating voltage exceeds a first preset threshold, outputting overvoltage alarm information to a remote control platform, and controlling the circuit breaker to disconnect to achieve power outage of the substation facility; the first preset threshold is DC 261-265V;

[0014] The undervoltage warning control includes: when the operating voltage is less than a second preset threshold, outputting undervoltage warning information to the remote control platform, and the circuit breaker does not operate; the second preset threshold is DC 188-192V.

[0015] Optionally, the over-temperature alarm and power-off control includes: when the ambient temperature exceeds a first temperature threshold, outputting over-temperature alarm information to a remote control platform, and controlling the circuit breaker to disconnect to achieve power off of the substation facility;

[0016] The temperature warning control includes: when the ambient temperature is between the second temperature threshold and the first temperature threshold, outputting over-temperature warning information to the remote control platform, and the circuit breaker does not operate.

[0017] The temperature threshold adjustment includes: setting a first temperature threshold and a second temperature threshold according to an instruction input by a user.

[0018] Optionally, the overload protection module is specifically used to control the circuit breaker to disconnect to achieve power outage of the substation facility when the load power or the operating current exceeds a corresponding preset value.

[0019] Optionally, a remote opening and locking function module is further included, which is used to lock the circuit breaker. When the circuit breaker is locked, the closing of the circuit breaker cannot be controlled locally or remotely.

[0020] Optionally, the substation facilities are lighting equipment, fans, and air conditioners.

[0021] An embodiment of the present application also provides a substation facility power load monitoring system, including the substation facility power load monitoring device according to the above-mentioned substation facility, as well as an intelligent gateway and a remote control platform, and the substation facility power load monitoring device communicates with the remote control platform through the intelligent gateway and the intelligent private network.

[0022] The present application provides a device and system for monitoring power load of a substation facility, which has the following beneficial effects:

[0023] 1. Real-time monitoring: The device collects key parameters such as current, voltage, and temperature in real time to ensure that operation and maintenance personnel can understand the status of the facility at any time.

[0024] 2. Fault warning and protection: The device can detect abnormal conditions such as overvoltage, undervoltage, overtemperature, leakage and overload in time, and automatically execute alarm and power-off protection to prevent equipment damage.

[0025] 3. Remote control: Supports remote monitoring and control, allowing managers to quickly respond to faults, adjust or cut off power in a timely manner, and reduce the need for on-site operations.

[0026] 4. Data recording: Automatically record fault information to facilitate subsequent cause analysis and improve troubleshooting efficiency.

[0027] 5. System integration: Communicate with the remote control platform through the intelligent gateway to form a closed-loop monitoring system and improve the overall operation and maintenance management level.

[0028] In summary, the above-mentioned substation facility power load monitoring device and system ensure the safe and stable operation of the substation facilities, while reducing maintenance costs and improving work efficiency.

[0029] More features and advantages of the embodiments of the present application are reflected below. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of the structure of a power load monitoring device for a substation facility in an embodiment of the present application. DETAILED DESCRIPTION

[0032] See also Figure 1 An embodiment of the present application provides a power supply load monitoring device for a substation facility, wherein the power supply load monitoring device for a substation facility is connected to a working circuit of the substation facility, and comprises:

[0033] Circuit breaker, used to control the closing or opening of the working circuit of the substation facility, that is, to control the on and off of the circuit. Its function is to automatically disconnect the circuit in the event of overload, short circuit or other faults to protect electrical equipment and lines from damage;

[0034] The data acquisition module is used to receive the operating parameters of the substation facilities, and its function is to provide real-time data for the monitoring system for subsequent analysis and processing; the operating parameters include operating current, operating voltage, ambient temperature, load power and leakage current;

[0035] The voltage monitoring and protection module is used to control the overvoltage alarm and undervoltage early warning of the substation facilities according to the operating voltage of the substation facilities. Its function is to prevent the abnormal voltage from causing damage to the equipment and protect the circuit by alarming and controlling the circuit breaker action;

[0036] The temperature monitoring and protection module is used to perform temperature early warning control, over-temperature alarm and power-off control, and temperature threshold adjustment of the substation facilities according to the ambient temperature of the substation facilities. The function is to prevent the equipment from being damaged due to overheating and ensure the safe operation of the equipment through alarm and power-off protection;

[0037] The leakage protection module is used to control the leakage protection of the substation facilities according to the leakage current of the substation facilities. The function is to prevent electric shock accidents and fires caused by leakage. Once the leakage current is detected to exceed the safety value, the power supply is immediately disconnected;

[0038] The overload protection module is used to control the overload protection of the substation facilities according to the operating current and load power of the substation facilities. The function is to prevent the circuit from being damaged due to overload by monitoring the current and power and disconnecting the circuit when it exceeds the preset value;

[0039] The operating parameter display module is used to display the operating parameters, so that the operation and maintenance personnel can intuitively see the operating status of the equipment, which is convenient for monitoring and analysis.

[0040] The substation facility power load monitoring device of this embodiment can achieve comprehensive monitoring and protection of the power supply of the substation facility by integrating the above functional modules, thereby ensuring the safe and reliable operation of the substation facility.

[0041] Furthermore, the overvoltage alarm control includes: when the operating voltage exceeds a first preset threshold, outputting overvoltage alarm information to a remote control platform, and controlling the circuit breaker to disconnect to achieve power outage of the substation facility; the first preset threshold is DC 261-265V;

[0042] Specifically, the overvoltage alarm control function is used to monitor the operating voltage of substation facilities and take corresponding protective measures when the voltage exceeds the safe range. The first preset threshold is a set voltage value range, which serves as a standard for judging overvoltage. In this example, the first preset threshold is 261 to 265 volts (V) DC, which means that if the monitored operating voltage exceeds this range, it will be judged as overvoltage. When the monitored operating voltage exceeds the first preset threshold, the monitoring device will send an overvoltage alarm message to the remote control platform to notify the operation and maintenance personnel of the overvoltage condition. In addition to sending the alarm message, the monitoring device will automatically control the circuit breaker to disconnect, thereby cutting off the power supply of the substation facility to prevent overvoltage from causing damage to the facility.

[0043] The undervoltage warning control includes: when the operating voltage is less than a second preset threshold, outputting undervoltage warning information to the remote control platform, and the circuit breaker does not operate; the second preset threshold is DC 188-192V.

[0044] Specifically, the undervoltage early warning control function is used to monitor the operating voltage of substation facilities and issue an early warning when the voltage is lower than the safe range. The second preset threshold is a set voltage value range, which serves as a standard for judging undervoltage. In this example, the second preset threshold is 188 to 192 volts (V) DC. This means that if the monitored operating voltage is lower than this range, it will be judged as undervoltage. When the monitored operating voltage is less than the second preset threshold, the monitoring device will send an undervoltage early warning message to the remote control platform to notify the operation and maintenance personnel of the undervoltage condition. Unlike the overvoltage alarm control, the monitoring device will not automatically disconnect the circuit breaker when an undervoltage condition occurs. This is because undervoltage does not usually cause immediate damage to the equipment, but serves as a warning signal to prompt the operation and maintenance personnel that there may be a problem that needs to be checked and resolved.

[0045] Further, the over-temperature alarm and power-off control includes: when the ambient temperature exceeds a first temperature threshold, outputting over-temperature alarm information to a remote control platform, and controlling the circuit breaker to disconnect to achieve power off of the substation facility;

[0046] Specifically, the over-temperature alarm and power-off control function is used to monitor the ambient temperature of substation facilities and take protective measures when the temperature exceeds the safe range. The first temperature threshold is a set temperature value, which is used as a criterion for judging over-temperature. When the ambient temperature exceeds this threshold, it is considered to be at risk of over-temperature. When the monitored ambient temperature exceeds the first temperature threshold, the monitoring device will send an over-temperature alarm message to the remote control platform to notify the operation and maintenance personnel that the facility may be overheated. In addition to sending the alarm message, the monitoring device will automatically control the circuit breaker to disconnect and cut off the power supply to the substation facility. This is done to prevent damage to the equipment due to overheating while avoiding possible safety risks.

[0047] The temperature warning control includes: when the ambient temperature is between the second temperature threshold and the first temperature threshold, outputting over-temperature warning information to the remote control platform, and the circuit breaker does not operate.

[0048] Specifically, the temperature early warning control function is used to monitor the ambient temperature of the substation facility and issue an early warning when the temperature approaches but has not yet reached the overheating level. The second temperature threshold is a set lower temperature value used as a standard for early warning. Together with the first temperature threshold (overtemperature alarm threshold), it constitutes a temperature monitoring range. The first temperature threshold is a set higher temperature value used as a standard for triggering overtemperature alarm and power outage. When the monitored ambient temperature is between the second temperature threshold and the first temperature threshold, the monitoring device will send an overtemperature early warning message to the remote control platform to notify the operation and maintenance personnel that the temperature of the facility is rising but has not yet reached a dangerous level. In this early warning stage, the monitoring device will not automatically disconnect the circuit breaker. This is because although the temperature at this time is high, it has not reached the level that requires immediate power outage. The purpose of the early warning is to remind the operation and maintenance personnel to pay attention to temperature changes so that timely measures can be taken to prevent the temperature from rising further. Specifically, when the power load monitoring device of the substation facility detects that the ambient temperature is between the second temperature threshold (lower temperature) and the first temperature threshold (higher temperature), it will send an overtemperature early warning message to the remote control platform, but will not automatically disconnect the power supply. In this way, maintenance personnel can receive early warning and take appropriate preventive measures, such as checking whether the cooling system is working properly or adjusting the ambient temperature to prevent the temperature from continuing to rise and causing equipment overheating.

[0049] The temperature threshold adjustment includes: setting a first temperature threshold and a second temperature threshold according to an instruction input by a user, the first temperature threshold is, for example, 90° C., and the second temperature threshold is, for example, 70° C.

[0050] Furthermore, the overload protection module is specifically used to control the circuit breaker to disconnect to achieve power outage of the substation facility when the load power or the operating current exceeds the corresponding preset value.

[0051] Specifically, the purpose of the overload protection module is to monitor the load conditions of the substation facilities and take measures to protect the equipment and circuits when an overload is detected. Load power or operating current exceeding the preset value means that when the monitoring device detects that the load power or operating current of the substation facility exceeds the pre-set safety limit, the overload protection will be triggered. When an overload condition occurs, the monitoring device will automatically send a signal to the circuit breaker to disconnect it, thereby cutting off the power supply to the substation facility. This is done to prevent safety accidents such as equipment damage or fire caused by overload. By disconnecting the circuit breaker, the monitoring device can quickly cut off the power supply and prevent the overload current from continuing to flow, thereby protecting the safety of the substation facilities and the power grid. Therefore, when the substation facility power load monitoring device detects that the load power or operating current of the facility exceeds the preset safety value, it will automatically control the circuit breaker to disconnect, thereby cutting off the power supply to prevent damage caused by overload. This is an important safety function of the overload protection module, which ensures that the substation facilities operate under safe electrical conditions.

[0052] Furthermore, it also includes a remote opening and locking function module, which is used to lock the circuit breaker. When the circuit breaker is locked, the circuit breaker cannot be closed locally or remotely.

[0053] Specifically, the remote trip lock function module provides a safety mechanism for locking the circuit breaker to prevent misoperation or unauthorized operation. Locking the circuit breaker means that through this module, the operation and maintenance personnel can activate a lock command to keep the circuit breaker in the trip (disconnected) state. Once the circuit breaker is locked, the closing (power-on) operation cannot be performed either locally (i.e., at the substation site) or through the remote control platform. This locked state ensures that the circuit breaker remains disconnected until the lock is released. The main purpose of this function is to ensure the safety of substation facilities in specific circumstances, such as during equipment maintenance, troubleshooting or emergencies, to prevent misoperation from causing the power to be accidentally connected, thereby avoiding possible safety accidents or equipment damage.

[0054] Furthermore, the substation facilities are lighting equipment, fans, and air conditioners.

[0055] An embodiment of the present application also provides a substation facility power load monitoring system, including the substation facility power load monitoring device according to the above-mentioned substation facility, as well as an intelligent gateway and a remote control platform, and the substation facility power load monitoring device communicates with the remote control platform through the intelligent gateway and the intelligent private network.

[0056] Specifically, the power load monitoring device of the substation facility is the core component of the system, which is responsible for real-time monitoring of the power load of the substation facility and executing corresponding protection measures. The intelligent gateway is an intermediate device responsible for connecting the monitoring device and the remote control platform. The intelligent gateway is responsible for data transmission and processing to ensure the security and stable transmission of data. The remote control platform is a remote management platform that allows operation and maintenance personnel to remotely access monitoring data and perform control operations through the network. The remote control platform can be a cloud-based service. The monitoring device communicates with the remote control platform through the intelligent gateway. This communication can be based on an intelligent private network, which is a network designed specifically for industrial applications, usually with high reliability, low latency and strong security. The entire system allows operation and maintenance personnel to monitor the power load of the substation facility in real time, receive alarm information, and remotely control the opening and closing operations of the circuit breaker. Therefore, the power load monitoring system of the substation facility in this embodiment connects the monitoring device and the remote control platform through the intelligent gateway and the intelligent private network, realizes remote monitoring and management of the power load of the substation facility, and improves the efficiency and safety of operation and maintenance.

[0057] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A power supply load monitoring device for a substation facility, characterized in that: The substation facility power load monitoring device is connected to the working circuit of the substation facility, and includes: A circuit breaker, used to control the closing or opening of a working circuit of the substation facility; A data acquisition module, used to receive operating parameters of substation facilities; the operating parameters include operating current, operating voltage, ambient temperature, load power and leakage current; Voltage monitoring and protection module, used to perform overvoltage alarm control and undervoltage early warning control of substation facilities according to the operating voltage of substation facilities; Temperature monitoring and protection module, used to perform temperature early warning control, over-temperature alarm and power-off control, and temperature threshold adjustment of substation facilities according to the ambient temperature of the substation facilities; A leakage protection module is used to perform leakage protection control of substation facilities according to the leakage current of the substation facilities; An overload protection module is used to perform overload protection control of substation facilities according to the operating current and load power of the substation facilities; The working parameter display module is used to display the working parameters.

2. The power supply load monitoring device for substation facilities according to claim 1, characterized in that: The overvoltage alarm control includes: when the operating voltage exceeds a first preset threshold, outputting overvoltage alarm information to a remote control platform, and controlling the circuit breaker to disconnect to achieve power outage of the substation facilities; the first preset threshold is DC 261-265V; The undervoltage warning control includes: when the operating voltage is less than a second preset threshold, outputting undervoltage warning information to the remote control platform, and the circuit breaker does not operate; the second preset threshold is DC 188-192V.

3. The power supply load monitoring device for substation facilities according to claim 1, characterized in that: The over-temperature alarm and power-off control includes: when the ambient temperature exceeds a first temperature threshold, outputting over-temperature alarm information to a remote control platform, and controlling the circuit breaker to disconnect to achieve power off of the substation facility; The temperature warning control includes: when the ambient temperature is between the second temperature threshold and the first temperature threshold, outputting over-temperature warning information to the remote control platform, and the circuit breaker does not operate. The temperature threshold adjustment includes: setting a first temperature threshold and a second temperature threshold according to an instruction input by a user.

4. The power supply load monitoring device for substation facilities according to claim 1, characterized in that: The overload protection module is specifically used to control the circuit breaker to disconnect so as to cut off the power supply of the substation facility when the load power or the operating current exceeds the corresponding preset value.

5. The substation facility power load monitoring device according to claim 1, characterized in that: It also includes a remote opening and locking function module, which is used to lock the circuit breaker. When the circuit breaker is locked, the closing of the circuit breaker cannot be controlled locally or remotely.

6. The power supply load monitoring device for substation facilities according to claim 1, characterized in that: The substation facilities include lighting equipment, fans, and air conditioners.

7. A power supply load monitoring system for a substation facility, characterized in that: It comprises a substation facility power load monitoring device according to any one of claims 1 to 5, as well as an intelligent gateway and a remote control platform, wherein the substation facility power load monitoring device communicates with the remote control platform through the intelligent gateway and the intelligent private network.

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