CN204761165U - Monitored control system is synthesized to rural power grid operation state - Google Patents

Abstract

The utility model provides a pair of monitored control system is synthesized to rural power grid operation state, including be used for detecting each substation state substation detection module, be used for detecting the line work state circuit detection module, with substation detection module and circuit detection module communication connection's substation monitoring module, with substation monitoring module communication connection's surveillance center, with substation monitoring module communication connection's short range executable module and the long -range output module who is connected with the surveillance center, parameter that can the real -time supervision power grid operation in -process to can carry out accurate early warning according to the parameter state, can carry out accuracy monitoring and early warning to the low -voltage state in the electric wire netting, ensure that power grid operation is stable.

Description

Rural power grid operation status comprehensive monitoring system

technical field

The utility model relates to a monitoring system, in particular to a comprehensive monitoring system for the running state of a rural power grid.

Background technique

In modern society, the requirements for the stability of power supply are getting higher and higher. Therefore, the monitoring of operating parameters in the power grid is particularly important, especially for the operation of rural power grids. At present, the operating parameters of rural power grids are mainly obtained manually. , and then enter the data into the system manually. In this process, the staff may not strictly follow the operation requirements to obtain relevant data, and in the process of entering data, it is easy to cause data errors due to negligence and other factors, thus affecting the final power supply. Decision-making affects the stability of the power system. On the other hand, the existing method has a serious lag problem, that is, the data monitored by humans cannot be fed back in time and cannot guide the operation of the power grid in real time. In addition More importantly, the existing monitoring methods cannot accurately detect and alarm the line operation status of the rural power grid and the low-voltage state of the power grid, resulting in low-voltage conditions in some areas that seriously affect production and life.

Therefore, it is necessary to propose a comprehensive monitoring system for the operation status of rural power grids, which can monitor the parameters in the operation process of rural power grids in real time, and provide accurate early warnings according to the status of parameters; The power grid is stable.

Utility model content

In view of this, the purpose of this utility model is to provide a comprehensive monitoring system for the operation status of the rural power grid, which can monitor the parameters in the operation process of the power grid in real time, and can accurately warn according to the state of the parameters; Monitoring and early warning to ensure stable operation of the power grid.

The utility model provides a comprehensive monitoring system for the operation status of the rural power grid, which includes a substation detection module for detecting the status of each substation, a line detection module for detecting the working state of the line, and the substation detection module and the line detection module. A substation monitoring module connected by module communication, a monitoring center connected by communication with the substation monitoring module, a short-distance execution module connected by communication with the substation monitoring module, and a remote output module connected with the monitoring center;

The substation detection module includes an equipment voltage sensor for detecting equipment voltage, an equipment current sensor for detecting equipment current, an equipment temperature sensor, an ambient temperature sensor for detecting the ambient temperature of the substation, and an environmental sensor for detecting the ambient humidity of the substation. One or a combination of two or more of humidity sensors and GIS gas sensors;

The line detection module includes a terminal voltage sensor and a head-end voltage sensor;

The short-range execution module includes an input and output unit communicatively connected with the substation monitoring module and power compensation equipment arranged at each node of the power grid within the range of the substation, and the power compensation device is communicatively connected with the substation detection module.

Further, the substation detection module includes a preprocessing circuit connected to the substation detection module and the line detection module, a comparator connected to the output end of the preprocessing circuit, a substation processing circuit connected to the output end of the comparator, and A substation memory communicatively connected to the substation processing circuit, the substation processing circuit is also connected to the output end of the preprocessing circuit, and the substation processing circuit is communicatively connected to the input and output unit and the power compensation device.

Further, the input and output unit includes a short-range display, a short-range alarm and a short-range keyboard, and the short-range display, short-range alarm and short-range keyboard are all connected to the substation processing circuit.

Further, the monitoring center includes a monitoring server, a scheduling server communicatively connected to the monitoring server, and a storage server communicatively connected to the monitoring server, the monitoring server communicates with the substation processing circuit, and the monitoring server communicates with the remote Output module connections.

Further, the remote output module includes a remote display and a remote alarm, both of which are connected to the monitoring server.

Further, the line detection module detects the transmission circuit, and the terminal voltage sensor and the head-end voltage communicate with the substation processing circuit through the corresponding detection transmission circuit.

Further, the substation monitoring module is connected to the monitoring center through a wireless transmission module.

Beneficial effects of the utility model: the comprehensive monitoring system for the operation status of the rural power grid of the utility model can monitor the parameters in the operation process of the rural power grid in real time, and can carry out accurate early warning according to the parameter status, can effectively avoid the interference of human factors, and ensure the accuracy of monitoring. Real-time and accuracy, thereby ensuring the continuous and stable operation of rural power grids;

It can accurately monitor and warn the low voltage state in the rural power grid in real time, and can accurately perform corresponding power compensation when there is a low voltage state, eliminate the low voltage state, ensure the stable operation of the power grid, and avoid affecting production and life.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is a functional block diagram of the utility model.

Detailed ways

Fig. 1 is a functional block diagram of the utility model, as shown in the figure, a comprehensive monitoring system for the operation status of a rural power grid provided by the utility model includes a substation detection module for detecting the status of each substation, and a substation detection module for detecting the working status of the line A line detection module, a substation monitoring module communicatively connected with the substation detection module and the line detection module, a monitoring center communicatively connected with the substation monitoring module, a short-range execution module communicatively connected with the substation monitoring module, and A remote output module connected to the monitoring center;

The substation detection module includes an equipment voltage sensor for detecting equipment voltage, an equipment current sensor for detecting equipment current, an equipment temperature sensor, an ambient temperature sensor for detecting the ambient temperature of the substation, and an environmental sensor for detecting the ambient humidity of the substation. One or a combination of two or more of humidity sensors and GIS gas sensors;

The line detection module includes a terminal voltage sensor and a head-end voltage sensor;

The short-range execution module includes an input and output unit communicatively connected with the substation monitoring module and power compensation equipment arranged at each node of the power grid within the range of the substation, and the power compensation device is communicatively connected with the substation detection module; the utility model The new type of comprehensive monitoring system for the operation status of rural power grids can monitor the parameters of the rural power grid in real time and provide accurate early warnings based on the status of the parameters. The grid continues to operate stably;

It can accurately monitor and warn the low voltage state in the rural power grid in real time, and can accurately perform corresponding power compensation when there is a low voltage state, eliminate the low voltage state, ensure the stable operation of the power grid, and avoid affecting production and life.

In this embodiment, the substation detection module includes a preprocessing circuit connected to the substation detection module and the line detection module, a comparator connected to the output end of the preprocessing circuit, and a substation connected to the output end of the comparator A processing circuit and a substation memory communicatively connected to the substation processing circuit, the substation processing circuit is also connected to the output end of the preprocessing circuit, the substation processing circuit is communicatively connected to the input and output unit and the power compensation device, Wherein, the preprocessing circuit is used for amplifying, filtering and analog-to-digital conversion processing of the detection signal, which is beneficial to subsequent processing, and the substation processing circuit adopts an existing single-chip microcomputer or an integrated chip.

In this embodiment, the input and output unit includes a short-range display, a short-range alarm and a short-range keyboard, and the short-range display, short-range alarm and short-range keyboard are all connected to the substation processing circuit. Through the above structure, It can help the staff of the substations to obtain relevant parameter information and operation ticket information, so as to guide the work accurately.

In this embodiment, the monitoring center includes a monitoring server, a scheduling server communicatively connected to the monitoring server, and a storage server communicatively connected to the monitoring server, the monitoring server is communicatively connected to the substation processing circuit, and the monitoring The server is connected with the remote output module;

Wherein, the remote output module includes a remote display and a remote alarm, both of which are connected to the monitoring server.

In this embodiment, the line detection module detects the transmission circuit, and the terminal voltage sensor and the head end voltage communicate with the substation processing circuit through the corresponding detection transmission circuit. Since the detection of the end voltage and the head end voltage of the line is located in each On the first line, in order to facilitate real-time feedback of parameters, the detection and transmission circuit is used to transmit to the substation processing circuit. The detection and transmission circuit can use an Ethernet module or a mobile communication module.

In this embodiment, the substation monitoring module is connected to the monitoring center through a wireless transmission module, wherein the wireless transmission module adopts an Ethernet module or a mobile communication module.

Working principle of the utility model:

During the operation of the power grid, the state parameters of each substation are detected by the substation detection module, including environmental parameters and equipment parameters. Among them, the equipment parameters mainly include voltage, current, and temperature parameters. For transformers, GIS gas parameters in insulating oil It is also an important parameter. The above parameters are acquired and transmitted to the preprocessing circuit through the substation detection module, and then input to the comparator and substation processing circuit after the preprocessing circuit processing. If the above parameters exceed the set parameters Threshold, the substation processing circuit generates alarm information, alarms through the short-range alarm, and displays it through the short-range display, the substation staff immediately prepares for the corresponding work, and the substation processing circuit transmits the alarm information and parameters to the monitoring server , the monitoring server obtains the corresponding operation request from the dispatching server according to the corresponding alarm information, and the dispatching server generates different operation tickets according to different alarm information, and feeds back to the substation processing circuit through the monitoring server, and the staff of the substation according to the operation ticket information to carry out corresponding operation and maintenance operations; if the above parameters are within the set range, it proves that the whole substation is running stably, and the substation processing circuit will directly transmit the monitored data to the monitoring server, which is convenient for the staff of the monitoring center to analyze, and The monitoring server stores the received data and forwarded operation ticket data in the storage server;

The line detection module is used to detect the head end voltage and the end voltage of the transmission line. The voltage information is transmitted to the preprocessing circuit through the detection transmission circuit, and then transmitted to the comparator after being processed by the preprocessing circuit. The comparator compares the end voltage with the The set voltage value is compared, and the end voltage is compared with the head end voltage to determine the difference. If the end voltage is less than the set value, it proves that the current state is in a low voltage state. The station processing circuit feeds back the current low voltage state to the monitoring server, and the monitoring server requests an operation ticket from the dispatching server. When the operation ticket fed back by the dispatching server is transmitted to the substation processing circuit, the substation processing circuit controls the power compensation according to the instruction of the operation ticket The device executes the compensation command;

When the difference between the head end voltage and the end voltage is only within the set range, it proves that the transmission line is normal. If the end voltage is less than the set value at this time, the substation processing circuit obtains the equipment voltage information, and synthesizes it according to the equipment voltage and current information. Determine the cause of the low voltage state; if the difference between the end voltage and the head end voltage is greater than the set value, it proves that there is a fault on the transmission line, such as the presence of conductive foreign matter that causes the line voltage drop to increase, etc., and the substation processing circuit generates an alarm message , and guide the line patrol staff to work according to the instruction of the operation ticket, and troubleshoot.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (7)

1. A comprehensive monitoring system for the operation status of rural power grids, characterized in that: comprising a substation detection module for detecting each substation state, a line detection module for detecting line operating status, and the substation detection module and the line A substation monitoring module connected to the detection module, a monitoring center connected to the substation monitoring module, a short-range execution module connected to the substation monitoring module, and a remote output module connected to the monitoring center; The substation detection module includes an equipment voltage sensor for detecting equipment voltage, an equipment current sensor for detecting equipment current, an equipment temperature sensor, an ambient temperature sensor for detecting the ambient temperature of the substation, and an environmental sensor for detecting the ambient humidity of the substation. One or a combination of two or more of humidity sensors and GIS gas sensors; The line detection module includes a terminal voltage sensor and a head-end voltage sensor; The short-range execution module includes an input and output unit communicatively connected with the substation monitoring module and power compensation equipment arranged at each node of the power grid within the range of the substation, and the power compensation device is communicatively connected with the substation detection module. 2. According to claim 1, the comprehensive monitoring system for the operation status of the rural power grid is characterized in that: the substation detection module includes a preprocessing circuit connected to the substation detection module and the line detection module, and an output terminal of the preprocessing circuit A connected comparator, a substation processing circuit connected to the output end of the comparator, and a substation memory connected in communication with the substation processing circuit, the substation processing circuit is also connected to the output end of the preprocessing circuit, the The substation processing circuit is communicatively connected with the input and output unit and the power compensation device. 3. According to claim 1 or 2, the comprehensive monitoring system for the operation status of the rural power grid is characterized in that: the input and output unit includes a short-range display, a short-range alarm and a short-range keyboard, and the short-range display, short-range alarm Both the device and the short-range keyboard are connected with the substation processing circuit. 4. The comprehensive monitoring system for the operation status of the rural power grid according to claim 1, wherein the monitoring center includes a monitoring server, a dispatching server connected in communication with the monitoring server, and a storage server connected in communication with the monitoring server, The monitoring server is communicatively connected with the substation processing circuit, and the monitoring server is connected with the remote output module. 5. The comprehensive monitoring system for the operation status of the rural power grid according to claim 1 or 4, wherein the remote output module includes a remote display and a remote alarm, both of which are connected to a monitoring server. 6. According to claim 2, the comprehensive monitoring system for the operation status of the rural power grid is characterized in that: the line detection module detects the transmission circuit, and the terminal voltage sensor and the head-end voltage communicate with the substation processing circuit through the corresponding detection transmission circuit connect. 7. The comprehensive monitoring system for the operation status of the rural power grid according to claim 1, characterized in that: the substation monitoring module is connected to the monitoring center through a wireless transmission module.