CN207720154U - A kind of intelligent substation test equipment difference optical interface synchronization transmission control device - Google Patents

Abstract

The utility model discloses a kind of intelligent substation test equipment difference optical interfaces to synchronize transmission control device, module occurs including lock-out pulse, further include several transmission link units, it includes multiple lock-out pulse output ends that module, which occurs, for lock-out pulse, each transmission link unit includes data latches, data transfer controller and data coding module, data transfer controller includes clock crystal oscillator, frequency synthesizer, shift register and data deserializer, frequency synthesizer respectively with clock crystal oscillator, shift register is connected with data deserializer, frequency synthesizer is also connected with corresponding lock-out pulse output end, frequency synthesizer also with the data latches in same transmission link unit, data deserializer is connect with the data coding module in same transmission link unit.The synchronization accuracy that the utility model carries out message transmission is high, and it is accurate that message sends Separation control；Realization method is simple, at low cost, and application is wide.

Description

A kind of intelligent substation test equipment difference optical interface synchronization transmission control device

Technical field

The utility model is related to intelligent substation of electric power system secondary device testing fields, and in particular to a kind of intelligence power transformation Test equipment of standing difference optical interface synchronizes transmission control device, for number between different optical interfaces in intelligent substation test equipment According to transmission stringent synchronization and precisely control at equal intervals.

Background technology

Intelligent substation is core component in intelligent grid, and use is advanced, reliable, integrated and environmentally friendly intelligence is set It is standby, basic demand is standardized as with whole station information digitalization, communications platform networking, information sharing, be automatically performed information collection, The basic functions such as measurement, control, protection, metering and detection.Primary equipment voltage, electric current are by electric mutual inductor in intelligent substation Or traditional mutual inductor is converted into that light number SV sampled value signals are point-to-point or networking is transferred to relay through unified become of combining unit The IED equipment such as protection, observing and controlling, metering, electric energy quality monitoring；Live switch position signal, trip protection/switching signal, control Signal is transformed into light number GOOSE signals and realizes point-to-point or network transmission.Each class testing of intelligent substation is adapted at present Equipment generally can all use multiple optical fiber interfaces, including light network interface, light serial ports, complete for transmitting light number SV, GOOSE signal At the test of various IED equipment corresponding functions.

Transmission feature based on SV messages, GOOSE message, SV message, GOOSE of the intelligent substation test equipment to transmission Message time discreteness, synchronism are more demanding, and in all kinds of test process of intelligent substation, test equipment is reported by changing SV Intelligent terminal location information in sample values and GOOSE message in text realizes different test events, especially in fact When testing the Protections such as bus differential protection, main transformer protection, to test equipment difference optical interface output SV messages, GOOSE message its Synchronism, long-time uniformity requirement are more stringent, this is directly related to the correctness of experiment, reliability, stability.Therefore intelligence In substation's test equipment the SV messages of different optical interfaces outputs or GOOSE message must assure that stringent synchronization that message is sent and Precisely control at equal intervals.

Utility model content

To solve the above-mentioned problems, the utility model provides a kind of intelligent substation test equipment difference optical interface synchronization Transmission control device, for data are sent between different optical interfaces in intelligent substation test equipment stringent synchronization and precisely between Every control.

Mould occurs for a kind of intelligent substation test equipment difference optical interface synchronization transmission control device, including lock-out pulse Block further includes several transmission link units, and it includes multiple lock-out pulse output ends that module, which occurs, for lock-out pulse,

Each transmission link unit includes data latches, data transfer controller and data coding module,

Data transfer controller includes clock crystal oscillator, frequency synthesizer, shift register and data deserializer, frequency Synthesizer is connect with clock crystal oscillator, shift register and data deserializer respectively, frequency synthesizer also with it is corresponding synchronous Pulse output end connect, frequency synthesizer also with the data latches in same transmission link unit, data deserializer with Data coding module connection in same transmission link unit,

Data coding module is connected with corresponding optical module,

Each lock-out pulse output end is connect by phase inverter with multichannel with door respectively.

The utility model compared with the existing technology, has the following advantages：

1, the synchronization accuracy that the message of different optical modules is sent is high, and the stability of synchronization is good, and it is accurate that message sends Separation control；

2, realization method is simple, at low cost, and application is wide.

Description of the drawings

Fig. 1 is the system structure diagram of the utility model；

Fig. 2 is the structural schematic diagram of data transfer controller in utility model device；

Fig. 3 is lock-out pulse generation module and multichannel and door connection diagram；

Fig. 4 is sequence diagram.

Specific implementation mode

Understand for the ease of person of ordinary skill in the relevant and implements the utility model, it is below in conjunction with the accompanying drawings and specific real Applying mode, the utility model is described in further detail.

As shown in Fig. 1~2, a kind of intelligent substation test equipment difference optical interface synchronization transmission control device, including it is same Module occurs for pace pulse, further includes several transmission link units, it includes multiple lock-out pulse outputs that module, which occurs, for lock-out pulse End,

Each transmission link unit includes data latches, data transfer controller and data coding module,

Data transfer controller includes clock crystal oscillator, frequency synthesizer, shift register and data deserializer, frequency Synthesizer is connect with clock crystal oscillator, shift register and data deserializer respectively, frequency synthesizer also with it is corresponding synchronous Pulse output end connect, frequency synthesizer also with the data latches in same transmission link unit, data deserializer with Data coding module connection in same transmission link unit,

Data coding module is connected with corresponding optical module,

Each lock-out pulse output end is connect by phase inverter with multichannel with door respectively.

What the utility model may be implemented the message of each optical module output synchronizes and is precisely controlled message interval time, It is realized especially by following manner, each lock-out pulse output end that module occurs for lock-out pulse exports lock-out pulse, Ge Getong The cycle phase of pace pulse is together and the low and high level of each lock-out pulse synchronizes, and each lock-out pulse is input to each data transmission control In the frequency synthesizer of device processed, data transmission pulse is input to displacement by frequency synthesizer simultaneously in the high level of lock-out pulse It is tactile in synchronizing for data transmission pulse in the data latches of register, data deserializer and same transmission link unit Under breaking-out is used, the message data of serial bit data modes（GOOSE/SV message datas）Each bit data pass sequentially through data Latch, shift register are transferred to data deserializer, and message data, message number are converted to by data deserializer According to passing through data coding module（PHY chip may be used）Optical module is sent to be exported.Frequency synthesizer is in lock-out pulse Low level when not output data transfer pulse to shift register, the number of data deserializer and same transmission link unit According in latch, optical module is exported without message data at this time, can be controlled respectively by controlling the interval of high level of lock-out pulse The high level at the interval for the message that a transmission link unit is sent, each lock-out pulse synchronizes, and then controls each transmission link The synchronization for the message that unit is sent.

Each lock-out pulse output end is connect by phase inverter with multichannel with door respectively, the input channel number of multichannel and door Consistent with lock-out pulse output end number, multichannel and door output transmission complement mark signal, each lock-out pulse is in low electricity Usually, indicate that the corresponding message of a upper high level has been sent completely, lock-out pulse carries out in low level by phase inverter anti- It is input to multichannel and door backward, multichannel externally exports the transmission complement mark signal of high level with door, externally indicates that message is sent It completes.For each lock-out pulse unevenness in low level, transmission complement mark signal is low level, externally indicates the transmission link having Unit is just in message transmission.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (1)

1. a kind of intelligent substation test equipment difference optical interface synchronizes transmission control device, including module occurs for lock-out pulse, It is characterized in that, further including several transmission link units, it includes multiple lock-out pulse output ends that module, which occurs, for lock-out pulse,

Each transmission link unit includes data latches, data transfer controller and data coding module,

Data transfer controller includes clock crystal oscillator, frequency synthesizer, shift register and data deserializer, frequency synthesis Device is connect with clock crystal oscillator, shift register and data deserializer respectively, frequency synthesizer also with corresponding lock-out pulse Output end connect, frequency synthesizer also with the data latches in same transmission link unit, data deserializer with it is same Data coding module connection in transmission link unit,

Data coding module is connected with corresponding optical module,

Each lock-out pulse output end is connect by phase inverter with multichannel with door respectively.