CN102570600A - Programmable general protection test control device - Google Patents

Abstract

The invention relates to a programmable general protection test control device, which is used for solving the technical problems that the models of the existing device are too many, spare products and parts are complicated and difficult, and the switching value output cannot be fed back. The programmable general protection test control device consists of a power supply, a switching-off operation module, an alternating current sampling module, a central processing unit (CPU) module, a switching-on module and a man-machine interface module, wherein the CPU module consists of a digital signal processor (DSP), a switching-off driving module, a switching value operation detection module, a switching-on module, a communication module, an analog/digital converter, a memory controller and a low-pass filtering module, data collected by the alternating current sampling module is input into the analog/digital converter after passing through the switching-off driving module, the switching value photoelectric isolation and the relay outlet control are completed, the switching-off driving module also transmits the data to the DSP through the switching value operation detection module, the switching-on module transmits the data to the DSP, and the DSP is in bi-direction connection with the communication module and the memory controller. The programmable general protection test control device is applicable to the protection, the control, the measurement and the monitoring of electric networks in voltage degrades being 110kv or lower than 110kv.

Description

General programmable protection measure and control device

Technical field

The present invention relates to a kind of novel protective relaying device; Be particularly related to a kind of general programmable protection measure and control device; Have powerful, protect and control programmable functions flexibly; Can satisfy user's requirement to greatest extent, change the situation that the microcomputer protecting device model was numerous and diverse in the past, standby redundancy is difficult.Its outstanding feature is powerful, and applying flexible is reliable and stable, and the output state of ability reliable detection switching value, guarantees to protect the execution result of logic correct.

Background technology

The develop rapidly of electric power system constantly proposes new requirement to relaying protection, and the microcomputer protective relay that is the basis with CPU more than 16 has been difficult to satisfy the requirement of modern power systems at aspects such as arithmetic speed, counting accuracy, network communication functions.And most domestic protection at present exists, and model is numerous and diverse, standby redundancy hard case.Most of at present protection does not have the detection of switching value output state, is not sure of the protection execution result.The present invention is the basis, is the protection of a kind of model, the multiple object of completion with multiple type product unification in the past with dsp chip more than 32.

Summary of the invention

The object of the invention provides a kind of general programmable protection measure and control device, and it is too much that mainly model was installed in solution in the past, the technical problem that the situation of standby redundancy difficult and complicated and switching value output can't be fed back.

Technical scheme of the present invention is: a kind of general programmable protection measure and control device, and by power supply, leave operational module, AC sampling module, CPU module, open into module, human-machine interface module and form.Power supply, leave operational module and comprise electric power loop, breaker operator loop, switching value output loop; Wherein electric power loop will exchange or direct current 85 ~ 265V converts 5V and 24V two-way power supply into; Supply chip respectively and leave the loop use, the breaking-closing operating of 1 circuit breaker, 1 breaker control circuit disconnection monitoring are accomplished in the breaker operator loop; And has an anti-jump function; The switching value output loop is accomplished protection tripping operation, remote control deciliter, warning function, and switching value operation detection module is through the power supply of output loop, the state of leaving through photoelectric coupled device and electric circuit inspection.The AC sampling module converts PT, a CT into AD chip required low-voltage.The CPU module by DSP, leave driver module, switching value operation detection module, open into module, communication module, A/D converter, storage control, low-pass filtering module and form; The data that the AC sampling module collects are imported A/D converter through behind the low-pass filtering module; Through A/D conversion back input DSP; After DSP handles, be transferred to and leave operational module through leaving driver module; Accomplish the photoelectricity of switching value and isolate and the relay control of export, leave driver module and also data are transferred to DSP again through switching value operation detection module, open into module and give DSP transfer of data; DSP with communication module, storage control is two-way connects, can receive IRIG-B sign indicating number GPS to the time signal.Human-machine interface module is made up of CPU, liquid crystal display, indicator light, keyboard, accomplishes parameter setting, data demonstration, warning message function.

Device core DSP is installed in CPU, opens on the module, employing be the TMS320F28335 chip that U.S. Texas Instruments company produces, this chip has high-performance cpu clock performance (150MHZ) and high-speed peripheral.Through the COMS treatment technology, this dsp chip has extremely low power consumption.Aspect analog acquisition; It has 16 passages, 12 analog quantity converters; Enhancement mode ADC peripheral hardware has 12 bit resolutions; And can accelerate to the sample rate (general chip be 6.25MSPS and 3.75MSPS) of per second 12.5M (MSPS), and can monitor various strong functions such as analog signal through pipeline organization.Through its many advantage, can easily satisfy the high accuracy of device high-performance, sampling, a series of requirements such as multimode of communication.

Beneficial effect of the present invention:

1, programmable functions: resources such as protection component, input signal, relay outlet, indicator light, failure wave-recording triggering are programmed, visual in image.The logic programmable function focuses in the device needed automation function of electric substation automation system and sequence logical control works fine function, and the function that multiple model device can be accomplished before can accomplishing through parameter setting reaches general protection observing and controlling function.

2,, can confirm to protect the correctness of output state through switching value output detection module.The reliability of enhance protection and certainty.

3, close friend's man-machine interaction: panel designs is attractive in appearance, succinct, easy to use, simple.Can show on the big LCDs main wiring diagram, switch and isolation knife, the real time position of cutter, also can work together shows and measures instantaneous value.Comprise 10 the 3 look LED lights that can programme, 3 buttons that are used for Equipment Control (divide, close, a distant place/switch on the spot), 1 reset key and a cover by upper and lower, left and right, the man-machine interaction key confirming, withdraw to form.

4, the user is provided for 100 failure wave-recordings and 64 SOE that the power down of accident analysis diagnosis is not lost.Wherein the length of failure wave-recording be fault preceding 4 with fault after 96, real time record comprises that 9 of acs, 16 open the state into amount, 10 amounts of leaving, all protection modules; SOE is except writing down various protection action messages, and also record process filtering opening into information such as displacement, self-check of device mistake, signal returns.

5, there are three kinds during the school: during when IRIG-B sign indicating number, pulse school and communication school.Wherein the precision when IRIG-B sign indicating number and pulse school is less than or equal to 1ms, and the precision during the communication school is accurate to Millisecond.Guarantee failure wave-recording and SOE Reliability of Information during the school accurately, promoted their value in accident analysis.Even reset or of short duration power down, do not influence the precision of clock yet.

6, support multiple communication modes such as Dual-Ethernet, optical fiber, RS485, CAN, with the requirement of the system that satisfies different user, different industry spot, different network environments, different scales to communication and network configuration.Support two net patterns, parallel or with warm standby mode work.Provide IEC-60870-5-103, MODBUS and inner stipulation with the communication of realization with upper layer device.Different stipulations can be moved on various network simultaneously, have further improved the reliability of communication.

The present invention is applicable to protection, control, measurement and the supervision of 110kv and following electric pressure electrical network.Can be used for different main wiring modes, like single busbar connection, double-bus and the martingale of many buses; Support dissimilar electrical networks, like isolated neutral system, through arc suppression coil earthing system and low resistance grounding system.

Description of drawings

Fig. 1: be hardware block diagram of the present invention.

Among the figure: the 1-power supply, leave operational module, 2-CPU module, 2-1-DSP; 2-2-leaves driver module, and 2-3-opens into module, the 2-4-communication module; The 2-5-A/D converter, 2-6-storage control, 2-7-low-pass filtering module; 2-8-switching value output detection module, 3-AC sampling module, 4-human-machine interface module.

Embodiment

With reference to Fig. 1; A kind of general programmable protection measure and control device; By power supply, leave operational module 1 (XRA15/110D05-24HG type 2 road power supplys, the DK1a-24V of Panasonic relay, flood that adopt the safe Electron Technology Co., Ltd of home brands Beijing Xing Yuanfeng are the JHX-2F anti-trip relay all), AC sampling module 3 (the TR1139-2B type current transformer and the TR1139-2C type voltage transformer that adopt Hubei Tianrui Electronic Co., Ltd. to produce), CPU module 2 by DSP 2-1 (the TMS320F28335 type dsp chip that adopts American TI Company to produce), leave driver module 2-2 (the TLP181 cake core that adopts Toshiba Corp to produce), open light inlet and form at a distance from driver module 2-3 (the TLP181 cake core that adopts Toshiba Corp to produce), communication module 2-4 (the KSZ8842 Fast Ethernet communication chip that adopts U.S. Micrel company to produce), A/D converter 2-5 (the AD7656 chip that adopts U.S. ADI company to produce), storage control 2-6 (the IC622LV51216 chip that adopts Taiwan ICSI company to produce), low-pass filter 2-7 (adopting the EMI/EMC low pass filter that the space person of outstanding talent produces in Beijing), switching value output detection module (the TLP521 cake core of the Shanghai KBP307 of Cen Xiang electronics technology Co., Ltd and Toshiba Corp's production).Human-machine interface module 4 (the dsPIC33FJ64GP206 control chip that adopts the U.S. little core company to produce; Adopt the Shenzhen to open up the LM320240C liquid crystal that general little scientific and technological development Co., Ltd produces), the data that collect of AC sampling module 3 through low-pass filtering module 2-7 after input A/D converter 2-5; Through A/D conversion back input DSP 2-1; After DSP 2-1 handles, be transferred to power supply, leave operational module 1, accomplish the photoelectricity of switching value and isolate and the relay control of export through leaving driver module 2-2.Leave driver module 2-2 and also data be transferred to DSP 2-1 again through switching value operation detection module, open into module 2-3 and give DSP 2-1 transfer of data, DSP 2-1 with communication module 2-4, storage control 2-6 is two-way connects; Power supply, leave operational module 1 respectively with AC sampling module 3, CPU, open into module 2 and link to each other, operating power is provided, AC sampling module 3 outputs are connected with CPU module 2 analog quantity inputs.

Claims (1)

1. a general programmable is protected measure and control device; By power supply, leave operational module, AC sampling module, CPU module, open into module, human-machine interface module and form; It is characterized in that the CPU module by DSP, leave driver module, switching value operation detection module, open into module, communication module, A/D converter, storage control, low-pass filtering module and form; Data that the AC sampling module collects are imported A/D converter through behind the low-pass filtering module, through A/D conversion back input DSP, after DSP handles, are transferred to and leave operational module through leaving driver module; Accomplishing the photoelectricity of switching value isolates and the relay control of export; Leave driver module and also data be transferred to DSP again through switching value operation detection module, open into module and give DSP transfer of data, DSP with communication module, storage control is two-way connects.

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