CN108011447A - A kind of monitoring power station equipment, Power Station Monitored Control System - Google Patents

Abstract

The invention provides a power station monitoring device and a power station monitoring system. The power station monitoring equipment includes a power supply module, an external environment monitoring module, a data interaction module, and a substation operation monitoring module. The power station monitoring system sets up a multi-level management center. The invention takes IP network and 4G network as the core, integrates various advanced technologies such as computer, communication, Internet, digital multimedia, storage, information security, etc., and supports monitored resources to pass through various methods such as optical network, Ethernet, wireless network, etc. Access, connect scattered and independent monitoring and collection points to the Internet, realize cross-regional and large-scale unified monitoring, unified storage, unified management, and resource sharing. The invention can help users in various industries provide clear and intuitive management methods, shorten decision-making time, improve work efficiency, and improve the safety level of monitoring areas.

Description

Power station monitoring equipment, power station monitoring system

technical field

The invention relates to a control platform in the field of electric power control, in particular to a power station monitoring device and a monitoring system.

Background technique

At present, with the expansion of various large-scale engineering projects, heavy industries, residential buildings and other facilities in the world, the corresponding power supply industry has also developed rapidly. On the one hand, the rapid increase of substations has expanded the number of power transmission and transformation equipment; and volume challenges.

The existing comprehensive EMS (Energy Management System), PMU (Synchronized Phasor Measurement Unit) and relay protection have gradually realized the intelligentization of power transmission and transformation, that is, telemetry, remote signaling, remote control, and remote adjustment. However, in the face of the requirements of today's social development and life, it is far from enough to only focus on the amount of data such as voltage and current. On the one hand, it is impossible to make correct and reasonable scheduling of electricity consumption; In the event of fire, flood and unpredictable natural disasters, according to the current stage of "unattended" and "less-attended", life and property will be seriously threatened because they cannot respond quickly and in time.

To be more precise, because there is no way to grasp the real-time operation of the substation and the changes in the environment in real time, especially because it can only be collected through vision, and because there is no way to carry out remote video monitoring, it will not be possible to understand the impact of high-voltage transmission in time on the growth of high trees. The threat of substation lines, the inability to capture and prevent the danger of man-made damage to power transmission and transformation equipment in time, and the problem of inability to manually inspect lines when encountering freezing rain and snow still exist. However, high-voltage transmission and transformation lines are usually far away from residential areas. If there are special maintenance personnel to take care of them, it will not only increase the cost, but also be detrimental to the personal safety of maintenance personnel. Therefore, it is difficult to improve the working efficiency and safety monitoring level of the power system.

The beneficial effects of the present invention are:

Based on the 4G technology, the invention can realize the remote collection, transmission and management of substation environment video and various signals of equipment. The system takes IP network and 4G network as the core, integrates various advanced technologies such as computer, communication, Internet, digital multimedia, storage, information security, etc., and supports monitored resources to be connected through various methods such as optical network, Ethernet, wireless network, etc. Networking of scattered and independent monitoring and collection points to achieve cross-regional and large-scale unified monitoring, unified storage, unified management, and resource sharing; help users in various industries provide clear and intuitive management methods, shorten decision-making time, and improve work efficiency , improve the security level of the monitoring area.

Contents of the invention

In order to solve the above problems, the present invention provides a power station monitoring device, including a power supply module, an external environment monitoring module, a data interaction module, and a substation operation monitoring module.

The power supply module is connected with other modules to provide power for the entire monitoring equipment.

The external environment monitoring module includes peripherals such as air temperature, air pressure, wind force, door contact, smoke, and camera, and monitors the external environment of the substation in all aspects.

The substation operation monitoring module includes a voltage monitoring module, a current monitoring module, an oil temperature monitoring module, an equipment operation control module and a short message instruction module, respectively monitor the voltage, current and oil temperature of the substation equipment, and can operate by receiving The instructions of the platform and the SMS instructions perform on-off operations on the circuits of the substation.

The data interaction module is used to select an appropriate network according to the network conditions and send the data obtained by the monitoring equipment of the power station to the monitoring center of the upper layer.

The substation operation monitoring module includes a voltage monitoring module, a current monitoring module, an oil temperature monitoring module, an equipment operation control module, and a short message instruction module. The voltage monitoring module, current monitoring module, and oil temperature monitoring module are used to monitor the voltage, current, and oil temperature of the substation equipment respectively. The equipment operation control module and the SMS instruction module can receive instructions from the operating platform and SMS instructions. The circuit performs on-off operation.

The selection priority of the data interaction module for network conditions is: wired network > 4G network > 3G network > 2G network.

Further, the power module includes a solar panel, MCU, lithium battery, battery charging protection circuit, power supply selection circuit, DC12/DC5 module, AD/DC module, filter circuit, reverse protection circuit.

The lithium battery, the battery charging protection circuit, the power supply selection circuit, and the DC12/DC5 module are connected in sequence.

The AD/DC module, filter circuit and reverse protection circuit are connected in sequence.

The output ends of the reverse protection circuit are respectively connected to the +5V terminal, the +15V/+12V terminal, and the -15V terminal, and the output ends of the +5V terminal are also connected to the power supply selection circuit, the DC5/DC4 module, and the DC12/DC5 module The output terminal is connected to the input terminal of the +5V terminal.

The MCU is used to periodically discharge the lithium battery when the commercial power works normally.

The power supply selection circuit is used to switch between the commercial power working mode and the lithium battery working mode.

The filter circuit is used to filter out the high-frequency noise in the output current of the AD/DC module.

The +5V terminal and +4V terminal respectively provide 5V power interface and 4V power interface for other modules. Capacitors are connected in parallel on both sides of the +5V terminal.

The AD/DC module converts 220V AC power into positive and negative 15V and positive 5V DC voltages.

The reverse protection circuit is used to prevent the power supply from being reversed and burned.

The +15V/+12V terminal is used to provide a 15V interface in the mains mode and a 12V interface in the battery mode.

Further, the working method of the data interaction module includes the following steps:

Step 1: Test the wired network. If the wired network is smooth, data transmission can be performed, otherwise, go to the next step.

Step 2: Judging the quality of the 4G network signal, when the signal status meets the requirements, use the 4G network to transmit data, otherwise proceed to the next step.

Step 3: Judging the quality of the 3G network signal, when the signal status meets the requirements, use the 3G network to transmit data, otherwise proceed to the next step.

Step 4: Judging the quality of the 2G network signal, when the signal status meets the requirements, use the 2G network to transmit data, otherwise proceed to the next step.

Step 5: The data interaction module stores the data to be transmitted;

Step 6: Go back to Step 1.

The power station monitoring system includes the above-mentioned power station monitoring equipment installed in each substation, the regional power monitoring management center for managing each power station monitoring equipment in the region, and the regional power monitoring management center and its subordinate power station monitoring equipment in the county. The county-level power monitoring and management center for management, the municipal power monitoring and management center for the county-level power monitoring and management centers in the city and their subordinate power station monitoring equipment, the municipal power monitoring and management A national power monitoring and management center that manages power station monitoring equipment.

Description of drawings

Figure 1 is a block diagram of the power station monitoring equipment.

Figure 2 is an example diagram of the power supply module.

Figure 3 is the power supply selection circuit.

Figure 4 is a data interaction task execution diagram.

Fig. 5 is a schematic diagram of the power station monitoring system.

Detailed ways

The present invention will be further described below in conjunction with specific examples.

As shown in Figure 1, the power station monitoring equipment is introduced first. The power station monitoring equipment includes a power supply module, an external environment monitoring module, a data interaction module, and a substation operation monitoring module. Each module is introduced separately as follows:

1. Power supply module

The power supply module is connected with other modules to provide power for the entire monitoring equipment.

Its structure is shown in Figure 2.

The power module includes a solar panel, MCU, lithium battery, battery charging protection circuit, power supply selection circuit, DC12/DC5 module, AD/DC module, filter circuit, reverse protection circuit.

The lithium battery, the battery charging protection circuit, the power supply selection circuit, and the DC12/DC5 module are connected in sequence.

The AD/DC module, filter circuit and reverse protection circuit are connected in sequence.

The output ends of the reverse protection circuit are respectively connected to the +5V terminal, the +15V/+12V terminal, and the -15V terminal, and the output ends of the +5V terminal are also connected to the power supply selection circuit, the DC5/DC4 module, and the DC12/DC5 module The output terminal is connected to the input terminal of the +5V terminal.

The MCU is used to periodically discharge the lithium battery when the commercial power works normally.

The power supply selection circuit is used to switch between the commercial power working mode and the lithium battery working mode.

The filter circuit is used to filter out the high-frequency noise in the output current of the AD/DC module.

The +5V terminal and +4V terminal respectively provide 5V power interface and 4V power interface for other modules. According to actual needs, a capacitor Cp is connected in parallel on both sides of the +5V terminal. Using the characteristic that the capacitor can store charge can prevent the device from restarting due to instantaneous power failure during the switching process of the power supply. Compared with the existing STS static transfer switch and ATS automatic transfer switch in the market, it not only meets the demand, simplifies the circuit, but also reduces the cost.

The AD/DC module converts 220V AC power into positive and negative 15V and positive 5V DC voltages.

The reverse protection circuit is used to prevent the power supply from being reversed and burned.

The +15V/+12V terminal is used to provide a 15V interface in the mains mode and a 12V interface in the battery mode.

As shown in FIG. 3 , the power supply selection circuit includes a relay and a diode, and the relay is used to switch between the mains power supply mode and the lithium battery work mode of the power supply module. In the mains power supply mode, provide 5V power for the relay K0, the pin 4 of the relay K0 is disconnected from the pin 3, and the lithium battery is not connected to the device. When the mains power is abnormal and cannot provide 5V power for the relay K0, the pin 4 and pin 3 of the relay K0 are closed, and the lithium battery is connected to the device to supply power for the device, and enters the lithium battery working mode. When the mains is normal, it will automatically return to the mains working mode.

2. External environment monitoring module

The external environment monitoring module includes peripherals such as air temperature, air pressure, wind force, door contact, smoke, and camera, and monitors the external environment of the substation in all aspects.

3. Substation operation monitoring module

The substation operation monitoring module includes a voltage monitoring module, a current monitoring module, and an oil temperature monitoring module to monitor the voltage, current, and oil temperature of the substation equipment respectively. Instructions and SMS instructions are used to switch on and off the circuits of the substation.

The oil temperature monitoring module monitors the temperature of the transformer oil in real time. By analyzing the temperature of the transformer oil, an early warning is given to the abnormality of the transformer. At the same time, it can promote the arc suppression effect of the high-voltage lead wire and the contact point of the sub-switch to prevent corona. and the generation of arc discharge.

4. Data interaction module

The data interaction module is used to select an appropriate network according to the network conditions and send the data obtained by the monitoring equipment of the power station to the monitoring center of the upper layer.

As shown in Figure 4, the working method of the data interaction module includes the following steps:

Step 1: Test the wired network. If the wired network is smooth, data transmission can be performed, otherwise, go to the next step.

Step 2: Judging the quality of the 4G network signal, when the signal status meets the requirements, use the 4G network to transmit data, otherwise proceed to the next step.

Step 3: Judging the quality of the 3G network signal, when the signal status meets the requirements, use the 3G network to transmit data, otherwise proceed to the next step.

Step 4: Judging the quality of the 2G network signal, when the signal status meets the requirements, use the 2G network to transmit data, otherwise proceed to the next step.

Step 5: The data interaction module stores the data to be transmitted;

Step 6: Go back to Step 1.

The power station monitoring system established by using the above power station monitoring equipment will be described below with reference to FIG. 5 .

The power station monitoring system includes power station monitoring equipment installed in each substation (monitoring equipment is installed in the substation), a regional power monitoring management center that manages the power station monitoring equipment in the area (can monitor multiple substations and their substations) Monitoring operation of monitoring equipment), county-level power monitoring and management center (can monitor and operate the regional power monitoring and management center and its subordinate power station monitoring equipment under its jurisdiction), municipal power monitoring and management center (can The power monitoring and management center and the power station monitoring equipment of multiple substations under it monitor and operate, and make adjustments to power dispatching according to the actual power consumption), national power monitoring and management center and the power station monitoring equipment of multiple substations under it for monitoring operation, and general dispatching of the national electric power). The management centers at all levels are connected to the network, and can use the mobile client to access with specified authority. In particular, through authority management, each layer can obtain the operation right of substation monitoring equipment, and can also perform monitoring operations through mobile client, mobile phone SMS, etc.

The management centers at all levels of the system utilize IP network construction, star topology, and multi-level networking management and control modes.

Claims (4)

1. a kind of monitoring power station equipment, it is characterised in that including power supply module, external environment monitoring modular, data interaction module, change Power station operating condition monitoring modular；

The power supply module is connected with remaining modules, and power supply is provided for whole monitoring device；

The external environment monitoring modular includes temperature, air pressure, wind-force, door sensor, smog and the first-class peripheral hardware of shooting, for power transformation External environment condition where standing is monitored；

The substation operation condition monitoring module includes voltage monitoring module, current monitoring module, oil temperature monitoring modular, equipment Operation control module and short-message instruction module, are respectively monitored the voltage, electric current, oil temperature of transformer equipment, and can pass through The instruction and short-message instruction for receiving operating platform carry out on-off line operation to the circuit of substation；

The data interaction module is used for the number for selecting suitable network to obtain monitoring power station monitoring of equipment according to network condition According to transmission last layer supervision center；

The substation operation condition monitoring module includes voltage monitoring module, current monitoring module, oil temperature monitoring modular, equipment Operation control module, short-message instruction module；Voltage monitoring module, current monitoring module, oil temperature monitoring modular are respectively used to becoming The voltage of electric equipment, electric current, oil temperature are monitored, and equipment operation control module and short-message instruction module can be operated by receiving The instruction of platform and short-message instruction carry out on-off line operation to the circuit of substation.

2. monitoring power station equipment as claimed in claim 1, it is characterised in that the power module include solar panel, MCU, lithium battery, charge protector of battery, power supply power supply selection circuit, DC12/ DC5 modules, AD/DC modules, filtered electrical Road, reverse protection circuit；

Lithium battery, charge protector of battery, power supply power supply selection circuit, DC12/ DC5 modules are sequentially connected with；

AD/DC modules, filter circuit, reverse protection circuit are sequentially connected with；

The output terminal of the reverse protection circuit is connected with+5V terminals ,+15V /+12V terminals, -15V terminals respectively ,+5V ends The output terminal of son is also connected with power supply power supply selection circuit, DC5/ DC4 modules, DC12/ DC5 modules output terminals and+5V terminals Input terminal connection；

The MCU is used in the case where alternating current is working properly, periodically discharges for lithium battery；

The power supply power supply selection circuit is used to switch alternating current operating mode and lithium battery operating mode；

The filter circuit is used to filter out the high-frequency noise in AD/DC module output currents；

+ 5V terminals ,+4V terminals are respectively that other modules provide 5V power interfaces, 4V power interfaces；It is in parallel in+5V terminals both sides There is capacitance；

220V alternating currents are converted to positive and negative 15V and positive 5V DC voltages by AD/DC modules；

Reverse protection circuit is used to prevent power supply is reversed from burning；

+ 15V/+12V terminals are used to provide 15V interfaces under alternating current operating mode, and 12V interfaces are provided under battery operated mode.

3. Power Station Monitored Control System as claimed in claim 1, it is characterised in that the method for work of the data interaction module includes Following steps：

Step 1：Cable network is tested, if cable network is unobstructed, can be carried out data transmission, is otherwise carried out in next step；

Step 2：Judge 4G network signal quality situations, it is no using 4G transmitted data on network when signal condition is met the requirements Then carry out in next step；

Step 3：Judge 3G network signal quality situation, when signal condition is met the requirements, data are transmitted using 3G network, it is no Then carry out in next step；

Step 4：Judge 2G network signal quality situations, it is no using 2G transmitted data on network when signal condition is met the requirements Then carry out in next step；

Step 5：Data interaction module is stored data to be transmitted;

Step 6：Return to step one.

4. Power Station Monitored Control System, it is characterised in that including be arranged at it is in each substation, such as any one of claim 1 ~ 4 institute The monitoring power station equipment stated, the region power monitoring administrative center being managed to each monitoring power station equipment in region, to county In the power monitoring at county level management that regional power monitoring administrative center and its subordinate's monitoring power station equipment are managed in domain The heart, the city-level electric power being managed to the monitoring power station equipment of each power monitoring administrative center at county level and its subordinate in administrative region of a city prison Control administrative center, the state's level being managed to the city-level power monitoring administrative center in state domain and its monitoring power station equipment of subordinate Power monitoring administrative center.