CN204179754U - Electric energy quality monitoring equipment - Google Patents

Abstract

The utility model provides power quality monitoring equipment, wherein the client equipment includes at least one POE monitoring device arranged on the client, and monitors the power quality of the client and collects data; a POE switch, and the POE monitoring device passes the collected data through The POE switch is coupled to the optical fiber switching network and sent to the server-side equipment for power quality monitoring. The server-side equipment includes: a switch that obtains monitoring signals sent from multiple client devices through the optical fiber switching network; a central processing device that receives A plurality of monitoring signals from the exchange, so as to calculate and back up the plurality of monitoring signals; a monitoring device, which acquires the monitoring signals and sends control signals to the client equipment. The utility model breaks the limitation that the monitoring equipment in the distributed computing mode can only monitor and analyze one client, and the original sampling data of each client is collected to the client device for processing in a centralized computing manner.

Description

Power Quality Monitoring Equipment

technical field

The utility model relates to the field of smart grids, in particular to power quality monitoring equipment.

Background technique

The mainstream power quality monitoring equipment currently on the market usually needs to be powered by separate wiring, including DC and AC. Moreover, the power quality monitoring equipment uses hardware platforms designed by different manufacturers (such as composed of different types of CPUs, DSPs, FPGAs, and ADCs) to perform local sampling, calculation, storage and display, and finally reports the corresponding information through the network according to the requirements of the monitoring equipment. calculation results.

However, since such equipment adopts a distributed computing mode, the monitoring equipment can only obtain calculated results to analyze the situation of a certain node, but cannot obtain complete original data for integrated analysis of all nodes.

Utility model content

The utility model proposes a power quality monitoring device, which includes a plurality of client devices and a server device, wherein, the plurality of client devices include: at least one POE monitoring device arranged on the client, which are respectively connected to Power line and Category 5 twisted pair, and monitor the power quality of the client and collect data; a POE switch, which is connected to the POE monitoring device and optical fiber through Category 5 twisted pair, wherein the data collected by the POE monitoring device Coupled to the optical fiber switching network through the POE switch and sent to the server-end device for power quality monitoring. The server-end device includes: a switch, which is connected to the optical fiber, and obtains data sent from a plurality of client devices through the optical fiber switching network; a A central processing device, which is connected to the switch, and accepts data from the switch, so as to calculate and back up the data; a monitoring device, which is connected to the central processing device, and obtains data and sends control signals to the customer end device. The utility model breaks the limitation that the monitoring equipment in the distributed computing mode can only monitor and analyze one client, and the original sampling data of each client is collected to the client equipment for processing in a centralized operation mode, and the server equipment can perform some integration analyze.

Further, the POE switch is also connected with an uninterruptible power supply. Since the uninterruptible power supply is provided, the utility model does not need additional electric wires on the client equipment, but only needs to be provided with network cables.

Further, the POE monitoring device includes: a data processing module, and the monitoring signal is formed into a network packet and encrypted and sent to the POE switch; a POE power receiving module, which is connected to the data processing module, and passes through the optical fiber switching network and The server-side device interacts to inform the client of the power consumption status and demand, and converts the power obtained by the POE switch into the power required by the client; a network cable interface, which is connected to the data processing module and the POE power receiving module .

Further, the data processing module further includes: an analog-to-digital conversion module, which converts the received analog signal including voltage and current data into a digital signal.

Further, the data processing module also includes: a programmable user interaction module, which is respectively connected to a liquid crystal screen and a key device through a liquid crystal screen interface and a key interface, and outputs an indication signal according to a user control signal of the liquid crystal screen and the key device .

The utility model is optionally realized by using an ASIC mode, and constitutes a highly integrated unified hardware platform. Therefore, the utility model can reduce the network attacks received by the equipment, shorten the research and development cycle of the equipment, and reduce the cost of research and development.

Further, the POE power receiving module includes: a diode rectifier bridge, which is connected to the network interface in the POE monitoring device, and performs combination and anti-reverse processing on the electrical signals from the network interface; a filter stabilizer A voltage module, which performs filtering and voltage stabilization processing on the electrical signal from the diode rectifier bridge; a power receiving control module, which receives the electrical signal from the filtering and voltage stabilization module, and communicates with the network to determine the required power consumption; An isolated power supply module, which converts the electrical signal received from the power receiving control module into local power consumption; a linear power conversion module, which sends the electrical signal output from the isolated power supply module to the POE monitoring device Data processing module; an amplifier module, which is connected between the isolated power supply module and the linear power conversion module, which scales and filters the output signal of the isolated power supply module, and outputs it to the data processing module Take a sample. The utility model adopts the POE power receiving mode, and the device does not need separate wiring for power supply, which saves the wiring cost of the whole system. Among them, the POE voltage is between 44 and 57V, and the typical value is 48V, which reduces the risk of equipment EMC and safety design. Secondly, the utility model improves the flexibility of monitoring system construction, and the terminal monitoring equipment can be hot-swappable.

Further, the amplifier module includes a first resistor, an amplifier, and a second resistor connected in parallel, wherein the amplifier is further connected in parallel with a third resistor.

Further, a bypass monitoring module is connected between the power receiving control module and the isolated power supply module, which includes a MOSFET switch, wherein the gate of the MOSFET switch is connected to the power receiving control module, so The drain of the MOSFET switch is connected to the filter voltage stabilization module, and the source of the MOSFET switch is connected to the isolated power supply module (1104d).

Description of drawings

Fig. 1 is a schematic diagram of network points of POE power quality monitoring equipment under centralized monitoring mode according to a specific embodiment of the present invention;

Fig. 2 is a building application schematic diagram of the POE power quality monitoring equipment based on a specific embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a POE monitoring device according to a specific embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a POE power receiving module according to a specific embodiment of the present invention.

Label description

110 POE monitoring device

1101 filter

1102 filter

1103 data processing module

1103a Analog-to-digital conversion module

1103b Programming User Interaction Module

1104 POE receiving module

1104a diode rectifier bridge

1104b filter regulator module

1104c power receiving control module

1104d isolated power module

1104e linear power conversion module

1104f amplifier module

1104g bypass monitoring module

1105 network cable interface

120 POE monitoring device

130 POE monitoring device

120 POE switch

220 POE switch

320 POE switch

400 switch

500 central processing unit

600 monitoring device

700 fiber optic switching network

m power line

L ₁ fifth category stranded wire

L ₂ category 5 stranded wire

LC liquid crystal screen

K key device

R ₁ first resistor

R ₂ second resistor

R ₃ third resistor

a amplifier

RC capacitor filter module

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described.

First, the outlets of the POE power quality monitoring equipment under the centralized monitoring mode provided by the utility model are introduced. As shown in FIG. 1 , the POE power quality monitoring equipment provided by the utility model includes a plurality of client terminals and a server terminal equipment. Wherein, a plurality of clients are used for monitoring and supplying power to the clients, and sending the obtained data to the server device through the optical fiber switching network 700 . The server-side device is used to collect and summarize the monitoring data of the plurality of client devices from the optical fiber switching network 700, so as to control and intervene the power consumption status of the plurality of client devices.

The utility model utilizes the POE switchboard to realize the purpose of the utility model. Among them, POE (PowerOver Ethernet, active Ethernet) is to provide some IP-based terminals (such as IP phones, wireless LAN access) without any changes to the existing Ethernet Cat.5 wiring infrastructure. point AP, network camera, etc.) while transmitting data signals, it can also provide DC power supply technology for such devices. POE technology can guarantee the normal operation of the existing network while ensuring the security of the existing structured wiring, and minimize the cost. POE is sometimes referred to as Power over Ethernet. It is the latest standard specification for transmitting data and electric power while using existing standard Ethernet transmission cables, and maintains compatibility with existing Ethernet systems and users.

The utility model also utilizes an uninterruptible power supply, i.e. UPS (Uninterruptible Power System/Uninterruptible Power Supply), which connects the storage battery (mostly lead-acid maintenance-free storage battery) with the host, and converts the DC power through a module circuit such as the host inverter. into the system equipment of the mains. Uninterruptible power supply is mainly used to provide stable and uninterrupted power supply to a single computer, computer network system or other power electronic equipment such as solenoid valves and pressure transmitters. UPS devices usually provide protection against overvoltage or undervoltage.

As shown in FIG. 1 , it is assumed that there are three power-consuming clients, so each client is provided with a client device. Specifically, two POE monitoring devices 110 are set on the first power consumption client, which are respectively connected to the optical fiber switching network 700 through the POE switch 120 . Preferably, the POE switch 120 is also connected with an uninterruptible power supply 130, which can serve as a power storage device to supply power to client devices. It should be noted that the uninterruptible power supply 130 is not a necessary component of the user end equipment, and the POE switch 120 can be directly connected to the wire of the user end to obtain electric power.

Similarly, two POE monitoring devices 210 and 310 are respectively installed on the other two power consumption clients, and are respectively connected to the optical fiber switching data network 700 through the POE switches 220 and 320 . Preferably, uninterruptible power supplies 230 and 330 are respectively provided for the above two power consumption clients.

Further, the client device of the POE power quality monitoring device provided by the present invention also includes a switch 400, which receives the data including the customer's power consumption status obtained from the three client devices through the optical fiber switching network 700, and then sends it to the central The processing device 500 calculates and backs up the data, and finally the monitoring device 600 processes and sends a control signal to the client device, so as to control and intervene in the power consumption of the client device. Wherein, the switch 400 includes a frame switch.

It should be noted that the number of client devices mentioned in the above embodiments and the number of POE monitoring devices included in each client device are exemplary and should not be considered as limiting the present invention . Those skilled in the art should understand that the number of client devices should be set according to the number and load of power-consuming clients, and each client device includes at least one POE monitoring device.

The application scenarios in which the POE power quality monitoring equipment provided by the present invention is applied to buildings will be introduced below. The building shown in FIG. 2 includes n floors, wherein the first floor is f ₁ , where the first client equipment is set. The nth layer is f _n , where the second user end equipment is set. For the sake of brevity, the status of the floors between the first floor f1 and the nth floor f _n will not be repeated. Further, the building is provided with a power line m, and the first floor f ₁ and the nth floor f _n are respectively connected to the power branch m by power branch lines m ₁ and m ₂ . Similarly, the building is also equipped with optical fiber n, and the first floor f ₁ and the nth floor f _n have branches of category five twisted pair lines L ₁ and L ₂ respectively.

Specifically, the client equipment corresponding to the first client set on the first layer f ₁ includes two POE monitoring devices 110, which are respectively connected to the power branch line m ₁ and the five-type twisted pair line L ₁ at the same time, and the customer Monitor the power quality of the terminal and collect data. The client equipment also includes a POE switch 120, which is connected to the POE monitoring device 110 and optical fiber n by a five-category twisted pair _L1 , wherein the POE monitoring device 110 collects from two POE monitoring devices 110 Data, and the data is coupled to the optical fiber switching network 700 through the optical fiber n, so as to be sent to the server end equipment for power quality monitoring.

Preferably, the POE switch 120 is also connected to an uninterruptible power supply 130, wherein the other end of the uninterruptible power supply is connected to the power branch line m2. Since the uninterruptible power supply 130 is provided, the utility model does not need to additionally install wires in the client equipment, but only needs to install network cables.

Wherein, the structure and function of the client device set by the second client set on the nth layer f _n are consistent with the above-mentioned first client set on the first layer _f1 , for the sake of brevity, no more details .

Specifically, as shown in FIG. 2 , the server-side equipment includes a switch 400, which is connected to optical fiber n, and obtains the floor client equipment from the first floor f ₁ to the n-th floor f _n through the optical fiber switching network 700. coming data. Further, the server-end device also includes a central processing device 500 connected to the switch 400, which accepts data from the switch 400, so as to calculate and back up the data. Further, the server-side device also includes a monitoring device 600, which is connected to the central processing device 500 to obtain data, and sends a control signal to the client device, so as to control and intervene in the power consumption status of the client device. Wherein, the central processing device 500 may be a PC, a small server or a blade-type scalable server, and the specific choice depends on the actual data processing requirements.

The following describes the POE monitoring device in detail by taking the POE monitoring device 110 of the first client as an example. As shown in FIG. 3 , the POE monitoring device 110 includes a data processing module 1103 , which forms data into network packets and sends them to the POE switch 120 in encrypted form. Further, the POE monitoring device 110 also includes a POE power receiving module 1104, which is connected to the data processing module 1103, and interacts with the server end device through the optical fiber switching network 700 to inform the user end of the power consumption status and demand, And the power obtained through the POE switch 120 is converted into the power required by the client device. Further, the POE monitoring device 110 also includes a network cable interface 1105 connected to the data processing module 1103 and the POE receiving module 1104 .

Further, the data processing module 1103 also includes an analog-to-digital conversion module 1103a, which converts the received analog signal including voltage and current data into a digital signal. Two filters 1101 and 1102 are respectively connected upstream of the analog-to-digital conversion module 1103a, and the filters 1101 and 1102 filter the current and voltage input through the current interface and the voltage interface respectively.

Further, the data processing module 1103 also includes a programmable user interaction module 1103b, which is respectively connected to a liquid crystal screen LC and a key device K through a liquid crystal screen interface and a key interface, and according to the users of the liquid crystal screen LC and key device K The control signal outputs an indication signal.

Specifically, as shown in Figure 4, the POE power receiving module includes:

A diode rectifier bridge 1104a, which is connected to the network interface 1105 in the POE monitoring device, and performs combining and anti-reverse processing on the electrical signals from the network interface 1105;

A filtering and voltage stabilizing module 1104b, which performs filtering and voltage stabilizing processing on the electrical signal from the diode rectifier bridge 1104a;

A power receiving control module 1104c, which receives the electrical signal from the filtering and voltage stabilizing module 1104b, and communicates with the network to determine the required power consumption;

An isolated power supply module 1104d, which converts the electrical signal received from the power receiving control module 1104c into local electricity;

A linear power conversion module 1104e, which sends the electrical signal output from the isolated power supply module 1104d to the data processing module 1103 of the POE monitoring device 110;

An amplifier module 1104f, which is connected between the isolated power supply module 1104d and the linear power conversion module 1104e, scales and filters the output signal of the isolated power supply module 1104d, and outputs it to the data processing module 1103 to sample.

Further, the amplifier module 1104f includes a first resistor R1, an amplifier a, and a second resistor R2 connected in parallel, wherein the amplifier a is further connected in parallel with a third resistor R3.

Further, a bypass monitoring module 1104g is connected between the power receiving control module 1104c and the isolated power supply module 1104d, which includes a MOSFET switch, wherein the gate of the MOSFET switch is connected to the power receiving control module 1104d. module 1104c, the drain of the MOSFET switch is connected to the filtering and voltage stabilization module 1104b, and the source of the MOSFET switch is connected to the isolated power supply module 1104d. Wherein, the gate of the MOSFET switch is also connected with a resistor-capacitor filter module RC.

The utility model breaks the limitation that the monitoring equipment in the distributed computing mode can only monitor and analyze one client, and the original sampling data of each client is collected to the client equipment for processing in a centralized operation mode, and the server equipment can perform some integration analyze.

The utility model has utilized standard five types of twisted pairs, which includes four pairs of twisted pairs, but only two pairs of them are used in 10M BASE-T and 100M BASE-T. IEEE802.3af allows two usages, that is, when the idle pin is used for power supply, the connection of pins 4 and 5 is positive, and the connection of pins 7 and 8 is negative. Therefore, POE power quality monitoring equipment can simultaneously obtain communication and receive power through a five-category twisted pair.

The utility model adopts the POE power receiving mode, and the device does not need separate wiring for power supply, which saves the wiring cost of the whole system. Among them, the POE voltage is between 44 and 57V, and the typical value is 48V, which reduces the risk of equipment EMC and safety design. Secondly, the utility model improves the flexibility of monitoring system construction, and the terminal monitoring equipment can be hot-swappable.

The utility model is optionally realized by using an ASIC mode, and constitutes a highly integrated unified hardware platform. Therefore, the utility model can reduce the network attack on the equipment, shorten the research and development cycle of the equipment, and reduce the cost of research and development.

Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions of the present utility model will be obvious to those skilled in the art after reading the above content. Therefore, the protection scope of the present utility model should be defined by the appended claims. In addition, any reference signs in the claims should not be construed as limiting the involved claims; the word "comprising" does not exclude other claims or means or steps not listed in the description; "first", "the first Words such as "two" are used to denote names only, and do not imply any particular order.

Claims (8)

1. an electric energy quality monitoring equipment, it comprises a plurality of client device and a server-side devices, and wherein, described client device comprises:

At least one POE supervising device (110,210,310) being arranged at client, it is connected to power line (m) and Category-5 twisted pair (L ₁, L ₂), and monitoring is carried out and image data to the quality of power supply of client;

One POE switch (120,220,320), it is by Category-5 twisted pair (L ₁, L ₂) be connected to described POE supervising device (110,210,310) and optical fiber (n), wherein, the data gathered are passed through POE switch (120 by POE supervising device (110,210,310), 220,320) be coupled to optical fiber switching network (700) and be sent to the server-side devices of electric energy quality monitoring

Described server-side devices comprises:

One switch (400), it is connected to optical fiber (n), and is obtained the data of sending from a plurality of client device by optical fiber switching network (700);

One central processing unit (500), it is connected to described switch (400), and accepts the data from described switch (400), thus calculates data and back up;

One supervising device (600), it is connected to central processing unit (500), and obtains Data Concurrent and send control signal to described client device.

2. electric energy quality monitoring equipment according to claim 1, is characterized in that, described POE switch (120,220,320) is also connected with uninterrupted power supply (130,230,330).

3. electric energy quality monitoring equipment according to claim 1 and 2, is characterized in that, described POE supervising device (110,210,310) comprising:

One data processing module (1103), and by data network consisting bag and encryption be sent to POE switch (120,220,320);

The powered module of one POE (1104), it is connected to described data processing module (1103), and undertaken mutual to inform client electricity consumption situation and demand by optical fiber switching network (700) and server-side devices, and by described POE switch (120,220,320) electricity obtained changes into electricity consumption needed for client;

One cable interface (1105), it is connected to described data processing module (1103) and the powered module of POE (1104).

4. electric energy quality monitoring equipment according to claim 3, is characterized in that, described data processing module (1103) also comprises:

One Analog-digital Converter module (1103a), it converts the analog signal comprising electric current and voltage data received to digital signal.

5. electric energy quality monitoring equipment according to claim 3, is characterized in that, described data processing module (1103) also comprises:

One programmable user interactive module (1103b), it is connected to a liquid crystal display screen (LC) and key device (K) respectively by LCD Interface and keystroke interface, and exports index signal according to the user control signal of liquid crystal display screen (LC) and key device (K).

6. electric energy quality monitoring equipment according to claim 3, is characterized in that, the powered module of described POE (1104) comprising:

One diode rectifier bridge (1104a), it is connected to described POE supervising device (110,210,310) network interface (1105) in, and the signal of telecommunication come from network interface (1105) is carried out He Lu and anti-inverse processing;

One filtering voltage regulation module (1104b), it carries out filtering voltage regulation process to from described diode rectifier bridge (1104a) signal of telecommunication out;

One by electric control module (1104c), accepts the signal of telecommunication come from described filtering voltage regulation module (1104b), and determines required electricity consumption with network service;

One insulating power supply module (1104d), it is converted to local electricity consumption by from the described signal of telecommunication received by electric control module (1104c);

One linear power supply conversion module (1104e), the signal of telecommunication exported from described insulating power supply module (1104d) is sent to the data processing module (1103) of described POE supervising device (110,210,310) by it;

One amplifier module (1104f), it is connected between described insulating power supply module (1104d) and described linear power supply conversion module (1104e), the output signal of described insulating power supply module (1104d) is carried out convergent-divergent and filtering conditioning by it, and exports to described data processing module (1103) and sample.

7. electric energy quality monitoring equipment according to claim 6, is characterized in that, described amplifier module (1104f) comprises the first resistance (R in parallel ₁), amplifier (a) and the second resistance (R ₂), wherein, described amplifier (a) is also parallel with one the 3rd resistance (R ₃).

8. electric energy quality monitoring equipment according to claim 6, it is characterized in that, described by being also connected with a bypass monitoring module (1104g) between electric control module (1104c) and described insulating power supply module (1104d), it comprises a switch mosfet, wherein, the grid of described switch mosfet is connected to described by electric control module (1104c), the drain electrode of described switch mosfet is connected to described filtering voltage regulation module (1104b), and the source electrode of described switch mosfet is connected to described insulating power supply module (1104d).